|
| By-election | Date | Incumbent | Party | Winner | Party | Position |
|---|
| East Grinstead | 29 July 1918 [30 1] | Henry Cautley | | Conservative | Henry Cautley | | Conservative | Recorder of Sunderland |
| Manchester North East | 16 July 1918 [30 1] | J. R. Clynes | | Labour | J. R. Clynes | | Labour | Food Controller |
| Bridgwater | 18 June 1918 [30 1] | Robert Sanders | | Conservative | Robert Sanders | | Conservative | Treasurer of the Household |
| Newcastle-upon-Tyne | 13 May 1918 [30 1] | Edward Shortt | | Liberal | Edward Shortt | | Liberal | Chief Secretary for Ireland |
| Birmingham West | 25 April 1918 [30 1] | Austen Chamberlain | | Conservative | Austen Chamberlain | | Conservative | Minister without Portfolio |
| Southampton | 19 December 1917 [30 1] | William Dudley Ward | | Liberal | William Dudley Ward | | Liberal | Vice-Chamberlain of the Household |
| Dublin University | 5 October 1917 [30 1] | Arthur Warren Samuels | | Irish Unionist | Arthur Warren Samuels | | Irish Unionist | Solicitor-General for Ireland |
| Norwich | 26 August 1917 [30 1] | George Henry Roberts | | Labour | George Henry Roberts | | Labour | Minister of Labour |
| Dundee | 30 July 1917 | Winston Churchill | | Liberal | Winston Churchill | | Liberal | Minister of Munitions |
| Chesterton | 27 July 1917 [30 1] | Edwin Samuel Montagu | | Liberal | Edwin Samuel Montagu | | Liberal | Secretary of State for India |
| Fulham | 3 July 1917 [30 1] | William Hayes Fisher | | Conservative | William Hayes Fisher | | Conservative | President of the Local Government Board |
| Ealing | 30 April 1917 [30 1] | Herbert Nield | | Conservative | Herbert Nield | | Conservative | Recorder of York |
| Belfast South | 9 April 1917 [30 1] | James Chambers | | Irish Unionist | James Chambers | | Irish Unionist | Solicitor-General for Ireland |
| Exeter | 7 August 1916 [30 1] | Henry Duke | | Conservative | Henry Duke | | Conservative | Chief Secretary for Ireland |
| Berwickshire | 18 July 1916 [30 1] | Harold Tennant | | Liberal | Harold Tennant | | Liberal | Secretary for Scotland |
| Widnes | 22 May 1916 [30 1] | William Walker | | Conservative | William Walker | | Conservative | Seeking re-election [30 2] |
| Dublin University | 25 April 1916 [30 1] | James Campbell | | Irish Unionist | James Campbell | | Irish Unionist | Attorney-General for Ireland |
| Rotherham | 26 January 1916 [30 1] | Jack Pease | | Liberal | Jack Pease | | Liberal | Postmaster General |
| Chesterton | 20 January 1916 [30 1] | Edwin Samuel Montagu | | Liberal | Edwin Samuel Montagu | | Liberal | Chancellor of the Duchy of Lancaster |
| Cleveland | 9 December 1915 | Herbert Samuel | | Liberal | Herbert Samuel | | Liberal | Chancellor of the Duchy of Lancaster |
| St Helens | 24 November 1915 [30 1] | Rigby Swift | | Conservative | Rigby Swift | | Conservative | Recorder of Wigan |
| Kingston | 16 November 1915 [30 1] | George Cave | | Conservative | George Cave | | Conservative | Solicitor General for England and Wales |
| Carmarthen District | 17 March 1915 [30 1] | W. Llewelyn Williams | | Liberal | W. Llewelyn Williams | | Liberal | Recorder of Cardiff |
| Saffron Walden | 13 February 1915 [30 1] | Cecil Beck | | Liberal | Cecil Beck | | Liberal | Commissioner of the Treasury |
| Chesterton | 13 February 1915 [30 1] | Edwin Samuel Montagu | | Liberal | Edwin Samuel Montagu | | Liberal | Chancellor of the Duchy of Lancaster |
| Scarborough | 9 February 1915 [30 1] | Walter Rea | | Liberal | Walter Rea | | Liberal | Commissioner of the Treasury |
| Swansea District | 13 August 1914 [30 1] | Sir David Brynmor Jones | | Liberal | Sir David Brynmor Jones | | Liberal | Recorder of Cardiff |
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Uncontested
- ↑ Walker owned a stud of thoroughbred horses. When he was given a contract to supply horses to the Army, questions were raised as to whether this contract disqualified him from the House of Commons, so Walker sought re-election in order to remove doubts as to his position.
30th Parliament (December 1910 – July 1914) |
| By-election | Date | Incumbent | Party | Winner | Party | Position |
|---|
| East Fife | 8 April 1914 [30 1] | H. H. Asquith | | Liberal | H. H. Asquith | | Liberal | Secretary of State for War [30 2] |
| Bethnal Green South West | 19 February 1914 | Charles Masterman | | Liberal | Mathew Wilson | | Conservative | Chancellor of the Duchy of Lancaster [30 2] |
| Wick District | 8 December 1913 | Robert Munro | | Liberal | Robert Munro | | Liberal | Lord Advocate [30 2] |
| Keighley | 11 November 1913 | Sir Stanley Buckmaster | | Liberal | Sir Stanley Buckmaster | | Liberal | Solicitor General for England and Wales [30 2] |
| Whitechapel | 30 April 1913 | Sir Stuart Samuel | | Liberal | Sir Stuart Samuel | | Liberal | Undertook a contract for the Public Service |
| Ilkeston | 1 July 1912 | J. E. B. Seely | | Liberal | J. E. B. Seely | | Liberal | Secretary of State for War [30 2] |
| Forest of Dean | 30 April 1912 [30 1] | Henry Webb | | Liberal | Henry Webb | | Liberal | Commissioner of the Treasury [30 2] |
| Manchester South | 5 March 1912 | Sir Arthur Haworth | | Liberal | Philip Glazebrook | | Conservative | Commissioner of the Treasury [30 2] |
| Glasgow St Rollox | 26 February 1912 | McKinnon Wood | | Liberal | McKinnon Wood | | Liberal | Secretary for Scotland [30 2] |
| Carmarthen District | 29 January 1912 | W. Llewelyn Williams | | Liberal | W. Llewelyn Williams | | Liberal | Recorder of Swansea |
| North Ayrshire | 20 December 1911 | Andrew Anderson | | Liberal | Duncan Campbell | | Conservative | Solicitor General for Scotland [30 2] |
| Bristol East | 3 November 1911 | Charles Hobhouse | | Liberal | Charles Hobhouse | | Liberal | Chancellor of the Duchy of Lancaster [30 2] |
| Middleton | 2 August 1911 | Sir William Adkins | | Liberal | Sir William Adkins | | Liberal | Recorder of Nottingham |
| East Dorset | 29 April 1911 [30 1] | Hon Frederick Guest | | Liberal | Hon Frederick Guest | | Liberal | Commissioner of the Treasury [30 2] |
| Arfon | 11 February 1911 [30 1] | William Jones | | Liberal | William Jones | | Liberal | Commissioner of the Treasury [30 2] |
- 1 2 3 4 Uncontested
- 1 2 3 4 5 6 7 8 9 10 11 12 Seat vacated on appointment to the office noted.
29th Parliament (January 1910 – December 1910) |
| By-election | Date | Incumbent | Party | Winner | Party | Position |
|---|
| Walthamstow | 1 November 1910 | John Simon | | Liberal | Sir John Simon | | Liberal | Solicitor General for England and Wales [29 1] |
| Govan | 28 April 1910 | William Hunter | | Liberal | William Hunter | | Liberal | Solicitor General for Scotland [29 1] |
| Reading | 12 March 1910 [29 2] | Rufus Isaacs | | Liberal | Rufus Isaacs | | Liberal | Solicitor General for England and Wales [29 1] |
| Shipley | 10 March 1910 [29 2] | Percy Illingworth | | Liberal | Percy Illingworth | | Liberal | Commissioner of the Treasury [29 1] |
| Barnstaple | 2 March 1910 [29 2] | Ernest Soares | | Liberal | Ernest Soares | | Liberal | Commissioner of the Treasury [29 1] |
| Tower Hamlets St George | 1 March 1910 | William Wedgwood Benn | | Liberal | William Wedgwood Benn | | Liberal | Commissioner of the Treasury [29 1] |
| Swansea District | 28 February 1910 [29 2] | Sir David Brynmor Jones | | Liberal | Sir David Brynmor Jones | | Liberal | Recorder of Merthyr Tydvil |
- 1 2 3 4 5 6 Seat vacated on appointment to the office noted.
- 1 2 3 4 Uncontested
28th Parliament (1906 – January 1910) |
| By-election | Date | Incumbent | Party | Winner | Party | Position |
|---|
| High Peak | 22 July 1909 | Oswald Partington | | Liberal | Oswald Partington | | Liberal | Junior Lord of the Treasury [28 1] |
| Dumfries Burghs | 20 July 1909 | John Gulland | | Liberal | John Gulland | | Liberal | Junior Lord of the Treasury [28 1] |
| Cleveland | 9 July 1909 | Herbert Samuel | | Liberal | Herbert Samuel | | Liberal | Chancellor of the Duchy of Lancaster [28 1] |
| East Denbighshire | 2 April 1909 | Edward Hemmerde | | Liberal | Edward Hemmerde | | Liberal | Recorder of Liverpool |
| Edinburgh South | 4 March 1909 | Arthur Dewar | | Liberal | Arthur Dewar | | Liberal | Solicitor General for Scotland [28 1] |
|
| Manchester North West | 24 April 1908 | Winston Churchill | | Liberal | William Joynson-Hicks | | Conservative | President of the Board of Trade [28 1] |
| Dewsbury | 23 April 1908 | Walter Runciman | | Liberal | Walter Runciman | | Liberal | President of the Board of Education [28 1] |
| West Carmarthenshire | 26 February 1908 [28 2] | John Lloyd Morgan | | Liberal | John Lloyd Morgan | | Liberal | Recorder of Swansea |
| Mid Glamorganshire | 7 February 1908 [28 2] | Samuel Thomas Evans | | Liberal | Samuel Thomas Evans | | Liberal | Solicitor-General for England and Wales [28 1] |
| Anglesey | 21 August 1907 [28 2] | Ellis Griffith | | Liberal | Ellis Griffith | | Liberal | Recorder of Birkenhead |
| Halifax | 6 March 1907 [28 2] | John Henry Whitley | | Liberal | John Henry Whitley | | Liberal | Junior Lord of the Treasury [28 1] |
| North Monmouthshire | 19 February 1907 [28 2] | Reginald McKenna | | Liberal | Reginald McKenna | | Liberal | President of the Board of Education [28 1] |
| Mid Glamorganshire | 8 October 1906 [28 2] | Samuel Thomas Evans | | Liberal | Samuel Thomas Evans | | Liberal | Recorder of Swansea |
| Westbury | 26 February 1906 [28 2] | John Fuller | | Liberal | John Fuller | | Liberal | Lord Commissioner of the Treasury [28 1] |
- 1 2 3 4 5 6 7 8 9 10 Seat vacated on appointment to the office noted.
- 1 2 3 4 5 6 7 Uncontested
27th Parliament (1900–1906) |
| By-election | Date | Incumbent | Party | Winner | Party | Position |
|---|
| Chichester | 2 June 1905 | Lord Edmund Talbot | | Conservative | Lord Edmund Talbot | | Conservative | Lord Commissioner of the Treasury [27 1] |
| Brighton [27 2] | 5 April 1905 | Gerald Loder | | Conservative | Ernest Villiers | | Liberal | Lord Commissioner of the Treasury [27 1] |
| Chorley | 4 November 1903 | David Lindsay | | Conservative | David Lindsay | | Conservative | Lord Commissioner of the Treasury [27 1] |
| Fareham | 28 October 1903 [27 3] | Arthur Lee | | Conservative | Arthur Lee | | Conservative | Civil Lord of the Admiralty [27 1] |
| Westhoughton | 24 October 1903 [27 3] | Edward Stanley | | Conservative | Edward Stanley | | Conservative | Postmaster General [27 1] |
| Warwick and Leamington | 23 October 1903 | Alfred Lyttelton | | Liberal Unionist | Alfred Lyttelton | | Liberal Unionist | Secretary of State for the Colonies [27 1] |
| Belfast West | 23 October 1903 | H. O. Arnold-Forster | | Liberal Unionist | H. O. Arnold-Forster | | Liberal Unionist | Secretary of State for War [27 1] |
| Londonderry | 8 October 1903 [27 3] | James Hamilton | | Irish Unionist | James Hamilton | | Irish Unionist | Treasurer of the Household [27 1] |
| Sevenoaks | 21 August 1902 | Henry Forster | | Conservative | Henry Forster | | Conservative | Lord Commissioner of the Treasury [27 1] |
| East Worcestershire | 15 August 1902 [27 3] | Austen Chamberlain | | Liberal Unionist | Austen Chamberlain | | Liberal Unionist | Postmaster General [27 1] |
| Tiverton | 14 August 1902 [27 3] | William Walrond | | Conservative | William Walrond | | Conservative | Chancellor of the Duchy of Lancaster [27 1] |
| West Derbyshire | 11 December 1900 [27 3] | Victor Cavendish | | Liberal Unionist | Victor Cavendish | | Liberal Unionist | Treasurer of the Household [27 1] |
| Woodbridge | 10 December 1900 [27 3] | E. G. Pretyman | | Conservative | E. G. Pretyman | | Conservative | Civil Lord of the Admiralty [27 1] |
| Wellington (Somerset) | 10 December 1900 [27 3] | Alexander Acland-Hood | | Conservative | Alexander Acland-Hood | | Conservative | Vice-Chamberlain of the Household [27 1] |
| Guildford | 10 December 1900 [27 3] | St John Broderick | | Conservative | St John Broderick | | Conservative | Secretary of State for War [27 1] |
| Preston | 8 December 1900 [27 3] | Robert William Hanbury | | Conservative | Robert William Hanbury | | Conservative | President of the Board of Agriculture [27 1] |
| Dover | 8 December 1900 [27 3] | George Wyndham | | Conservative | George Wyndham | | Conservative | Chief Secretary for Ireland [27 1] |
26th Parliament (1895–1900) |
| By-election | Date | Incumbent | Party | Winner | Party | Position |
|---|
| Dublin University | 16 May 19001 | Edward Carson | | Irish Unionist | Edward Carson | | Irish Unionist | Solicitor General 2 |
| Oxford | 4 November 18981 | Arthur Annesley | | Conservative | Arthur Annesley | | Conservative | Comptroller of the Household 2 |
| Mid Armagh | 21 January 18981 | Dunbar Barton | | Irish Unionist | Dunbar Barton | | Irish Unionist | Solicitor General for Ireland 2 |
| Wycombe | 21 February 18961 | Richard Curzon | | Conservative | Richard Curzon | | Conservative | Treasurer of the Household 2 |
| Harrow | 30 November 18951 | William Ambrose | | Conservative | William Ambrose | | Conservative | Attorney-General of the Duchy of Lancaster 2 |
| Dublin St Stephen's Green | 2 September 1895 | William Kenny | | Liberal Unionist | William Kenny | | Liberal Unionist | Solicitor General for Ireland 2 |
| Inverness Burghs | 31 August 18951 | Robert Finlay | | Liberal Unionist | Robert Finlay | | Liberal Unionist | Solicitor General 2 |
- 1 An uncontested by-election.
- 2 Seat vacated on appointment to the office noted.
|
25th Parliament (1892–1895) |
| By-election | Date | Incumbent | Party | Winner | Party | Position |
|---|
| Ealing | 8 July 18951 | Lord George Hamilton | | Conservative | Lord George Hamilton | | Conservative | Secretary of State for India 2 |
| Sleaford | 6 July 18951 | Henry Chaplin | | Conservative | Henry Chaplin | | Conservative | President of the Local Government Board 2 |
| Blackpool | 6 July 18951 | Sir Matthew Ridley | | Conservative | Sir Matthew Ridley | | Conservative | Secretary of State for the Home Department 2 |
| Croydon | 5 July 18951 | Charles Ritchie | | Conservative | Charles Ritchie | | Conservative | President of the Board of Trade 2 |
| Manchester East | 1 July 18951 | Arthur Balfour | | Conservative | Arthur Balfour | | Conservative | First Lord of the Treasury 2 |
| Bristol West | 1 July 18951 | Sir Michael Hicks Beach | | Conservative | Sir Michael Hicks Beach | | Conservative | Chancellor of the Exchequer 2 |
| Birmingham West | 1 July 18951 | Joseph Chamberlain | | Liberal Unionist | Joseph Chamberlain | | Liberal Unionist | Secretary of State for the Colonies 2 |
| St George's Hanover Square | 29 June 18951 | George Goschen | | Conservative | George Goschen | | Conservative | First Lord of the Admiralty 2 |
| York | 14 November 18941 | Frank Lockwood | | Liberal | Frank Lockwood | | Liberal | Solicitor General for England and Wales 2 |
| Dumfries Burghs | 7 May 18941 | Robert Reid | | Liberal | Robert Reid | | Liberal | Solicitor General for England and Wales 2 |
| Wisbech | 3 April 1894 | Arthur Brand | | Liberal | Arthur Brand | | Liberal | Treasurer of the Household 2 |
| Hawick Burghs | 27 March 1894 | Thomas Shaw | | Liberal | Thomas Shaw | | Liberal | Solicitor General for Scotland 2 |
| Leith Burghs | 26 March 1894 | Ronald Munro-Ferguson | | Liberal | Ronald Munro-Ferguson | | Liberal | Lord Commissioner of the Treasury 2 |
| Leeds West | 16 March 18941 | Herbert Gladstone | | Liberal | Herbert Gladstone | | Liberal | First Commissioner of Works 2 |
| Accrington | 21 December 1893 | Joseph Leese | | Liberal | Joseph Leese | | Liberal | Recorder of Manchester2 |
| Cardiganshire | 4 July 18931 | William Bowen Rowlands | | Liberal | William Bowen Rowlands | | Liberal | Recorder of Swansea2 |
| Saffron Walden | 19 September 18921 | Herbert Gardner | | Liberal | Herbert Gardner | | Liberal | President of the Board of Agriculture 2 |
| Dundee | 9 September 18921 | Edmund Robertson | | Liberal | Edmund Robertson | | Liberal | Civil Lord of the Admiralty 2 |
| Merionethshire | 26 August 18921 | T. E. Ellis | | Liberal | T. E. Ellis | | Liberal | Lord Commissioner of the Treasury 2 |
| East Fife | 25 August 18921 | H. H. Asquith | | Liberal | H. H. Asquith | | Liberal | Secretary of State for the Home Department 2 |
Clackmannanshire and Kinross-shire | 25 August 18921 | John Balfour | | Liberal | John Balfour | | Liberal | Lord Advocate 2 |
| Stirling Burghs | 25 August 18921 | Henry Campbell-Bannerman | | Liberal | Henry Campbell-Bannerman | | Liberal | Secretary of State for War 2 |
| Elgin Burghs | 25 August 18921 | Alexander Asher | | Liberal | Alexander Asher | | Liberal | Solicitor General for Scotland 2 |
| Newcastle-upon-Tyne | 25 August 1892 | John Morley | | Liberal | John Morley | | Liberal | Chief Secretary for Ireland 2 |
| Rotherham | 25 August 18921 | Arthur Dyke Acland | | Liberal | Arthur Dyke Acland | | Liberal | Vice President of the Committee of Council on Education 2 |
| Forfarshire | 24 August 18921 | John Rigby | | Liberal | John Rigby | | Liberal | Solicitor General for England and Wales 2 |
Midlothian (or Edinburghshire) | 24 August 18921 | William Ewart Gladstone | | Liberal | William Ewart Gladstone | | Liberal | Prime Minister, First Lord of the Treasury, Lord Privy Seal 2 |
| Glasgow Bridgeton | 24 August 18921 | Sir George Trevelyan | | Liberal | Sir George Trevelyan | | Liberal | Secretary for Scotland 2 |
| Mid Northamptonshire | 24 August 18921 | Charles Spencer | | Liberal | Charles Spencer | | Liberal | Vice-Chamberlain of the Household 2 |
| Nottingham East | 24 August 18921 | Arnold Morley | | Liberal | Arnold Morley | | Liberal | Postmaster General 2 |
| Derby | 24 August 1892 | Sir William Vernon Harcourt | | Liberal | Sir William Vernon Harcourt | | Liberal | Chancellor of the Exchequer 2 |
| Aberdeen South | 23 August 18921 | James Bryce | | Liberal | James Bryce | | Liberal | Chancellor of the Duchy of Lancaster 2 |
| St Austell | 23 August 18921 | William Alexander McArthur | | Liberal | William Alexander McArthur | | Liberal | Lord Commissioner of the Treasury 2 |
| Wolverhampton East | 23 August 18921 | Henry Fowler | | Liberal | Henry Fowler | | Liberal | President of the Local Government Board 2 |
| Stoke-upon-Trent | 23 August 18921 | George Leveson-Gower | | Liberal | George Leveson-Gower | | Liberal | Comptroller of the Household 2 |
| Sheffield Brightside | 23 August 18921 | A. J. Mundella | | Liberal | A. J. Mundella | | Liberal | President of the Board of Trade 2 |
| Bradford Central | 23 August 18921 | George Shaw-Lefevre | | Liberal | George Shaw-Lefevre | | Liberal | First Commissioner of Works 2 |
| Southwark West | 23 August 18921 | Richard Causton | | Liberal | Richard Causton | | Liberal | Lord Commissioner of the Treasury 2 |
| Hackney South | 23 August 18921 | Sir Charles Russell | | Liberal | Sir Charles Russell | | Liberal | Attorney General for England and Wales 2 |
- 1 An uncontested by-election.
- 2 Seat vacated on appointment to the office noted.
|
24th Parliament (1886–1892) |
| By-election | Date | Incumbent | Party | Winner | Party | Position |
|---|
| Chichester | 9 December 18911 | Lord Walter Gordon-Lennox | | Conservative | Lord Walter Gordon-Lennox | | Conservative | Treasurer of the Household 2 |
| Leeds North | 23 November 18911 | William Jackson | | Conservative | William Jackson | | Conservative | Chief Secretary for Ireland 2 |
| Manchester North East | 8 October 1891 | Sir James Fergusson | | Conservative | Sir James Fergusson | | Conservative | Postmaster General 2 |
| Strand | 12 May 18911 | William Henry Smith | | Conservative | William Henry Smith | | Conservative | Lord Warden of the Cinque Ports 2 |
| Sleaford | 26 September 1889 | Henry Chaplin | | Conservative | Henry Chaplin | | Conservative | President of the Board of Agriculture 2 |
| Bristol West | 20 February 18881 | Sir Michael Hicks Beach | | Conservative | Sir Michael Hicks Beach | | Conservative | President of the Board of Trade 2 |
| Dublin University | 3 February 18881 | Dodgson Hamilton Madden | | Irish Conservative | Dodgson Hamilton Madden | | Irish Conservative | Solicitor General for Ireland 2 |
| Dartford | 2 February 18871 | Sir William Hart Dyke | | Conservative | Sir William Hart Dyke | | Conservative | Vice President of the Committee of Council on Education 2 |
| North Northamptonshire | 16 August 18861 | Lord Burghley | | Conservative | Lord Burghley | | Conservative | Parliamentary Groom in Waiting 2 |
| Edinburgh and St Andrews Universities | 13 August 18861 | John Macdonald | | Conservative | John Macdonald | | Conservative | Lord Advocate 2 |
| Cambridge University | 13 August 18861 | Henry Cecil Raikes | | Conservative | Henry Cecil Raikes | | Conservative | Postmaster General 2 |
| Melton | 13 August 18861 | Lord John Manners | | Conservative | Lord John Manners | | Conservative | Chancellor of the Duchy of Lancaster 2 |
| Dublin University | 13 August 18861 | David Plunket | | Irish Conservative | David Plunket | | Irish Conservative | First Commissioner of Works 2 |
| Hugh Holmes | | Irish Conservative | Hugh Holmes | | Irish Conservative | Attorney General for Ireland 2 |
| West Down | 13 August 18861 | Lord Arthur Hill | | Irish Conservative | Lord Arthur Hill | | Irish Conservative | Comptroller of the Household 2 |
| Wigtownshire | 12 August 18861 | Sir Herbert Maxwell | | Conservative | Sir Herbert Maxwell | | Conservative | Lord Commissioner of the Treasury 2 |
| Buteshire | 12 August 18861 | James Robertson | | Conservative | James Robertson | | Conservative | Solicitor General for Scotland 2 |
| Enfield | 12 August 18861 | William Pleydell-Bouverie | | Conservative | William Pleydell-Bouverie | | Conservative | Treasurer of the Household 2 |
| Ealing | 12 August 18861 | Lord George Hamilton | | Conservative | Lord George Hamilton | | Conservative | First Lord of the Admiralty 2 |
| Horncastle | 12 August 18861 | Edward Stanhope | | Conservative | Edward Stanhope | | Conservative | Secretary of State for the Colonies 2 |
| Isle of Wight | 12 August 18861 | Sir Richard Webster | | Conservative | Sir Richard Webster | | Conservative | Attorney General for England and Wales 2 |
| Tiverton | 12 August 18861 | William Walrond | | Conservative | William Walrond | | Conservative | Lord Commissioner of the Treasury 2 |
| St George's, Tower Hamlets | 12 August 1886 | Charles Ritchie | | Conservative | Charles Ritchie | | Conservative | President of the Local Government Board 2 |
| Sheffield Ecclesall | 11 August 18861 | Ellis Ashmead-Bartlett | | Conservative | Ellis Ashmead-Bartlett | | Conservative | Civil Lord of the Admiralty 2 |
| Plymouth | 11 August 18861 | Edward Clarke | | Conservative | Edward Clarke | | Conservative | Solicitor General for England and Wales 2 |
| Manchester East | 11 August 18861 | Arthur Balfour | | Conservative | Arthur Balfour | | Conservative | Secretary for Scotland 2 |
| Liverpool Walton | 11 August 18861 | John George Gibson | | Conservative | John George Gibson | | Conservative | Solicitor General for Ireland 2 |
| Croydon | 11 August 18861 | Sidney Herbert | | Conservative | Sidney Herbert | | Conservative | Lord Commissioner of the Treasury 2 |
| Bristol West | 11 August 18861 | Sir Michael Hicks Beach | | Conservative | Sir Michael Hicks Beach | | Conservative | Chief Secretary for Ireland 2 |
| Brighton | 11 August 18861 | William Thackeray Marriott | | Conservative | William Thackeray Marriott | | Conservative | Judge Advocate General 2 |
| Birmingham East | 11 August 18861 | Henry Matthews | | Conservative | Henry Matthews | | Conservative | Secretary of State for the Home Department 2 |
| Strand | 11 August 18861 | William Henry Smith | | Conservative | William Henry Smith | | Conservative | Secretary of State for War 2 |
| Paddington South | 11 August 18861 | Lord Randolph Churchill | | Conservative | Lord Randolph Churchill | | Conservative | Chancellor of the Exchequer 2 |
| Marylebone East | 11 August 18861 | Lord Charles Beresford | | Conservative | Lord Charles Beresford | | Conservative | Junior Naval Lord 2 |
| Lewisham | 11 August 18861 | William Legge | | Conservative | William Legge | | Conservative | Vice-Chamberlain of the Household 2 |
| Hampstead | 11 August 18861 | Sir Henry Holland | | Conservative | Sir Henry Holland | | Conservative | Vice President of the Committee of Council on Education 2 |
- 1 An uncontested by-election.
- 2 Seat vacated on appointment to the office noted.
|
23rd Parliament (1885–1886) |
| By-election | Date | Incumbent | Party | Winner | Party | Position |
|---|
| Clitheroe | 19 April 1886 [23 1] | Ughtred Kay-Shuttleworth | | Liberal | Ughtred Kay-Shuttleworth | | Liberal | Chancellor of the Duchy of Lancaster [23 2] |
| Halifax | 3 April 1886 [23 1] | Sir James Stansfeld | | Liberal | Sir James Stansfeld | | Liberal | President of the Local Government Board [23 2] |
| Cardiff Boroughs | 27 February 1886 | Sir Edward James Reed | | Liberal | Sir Edward James Reed | | Liberal | Junior Lord of the Treasury [23 2] |
| South Somerset | 24 February 1886 [23 1] | Frederick Lambart | | Liberal | Frederick Lambart | | Liberal | Vice-Chamberlain of the Household [23 2] |
| Grantham | 23 February 1886 [23 1] | John William Mellor | | Liberal | John William Mellor | | Liberal | Judge Advocate General [23 2] |
| Clackmannanshire and Kinross-shire | 13 February 1886 [23 1] | John Balfour | | Liberal | John Balfour | | Liberal | Lord Advocate [23 2] |
| Berwickshire | 13 February 1886 [23 1] | Edward Marjoribanks | | Liberal | Edward Marjoribanks | | Liberal | Comptroller of the Household [23 2] |
| Banffshire | 13 February 1886 [23 1] | Robert Duff | | Liberal | Robert Duff | | Liberal | Civil Lord of the Admiralty [23 2] |
| Luton | 13 February 1886 [23 1] | Cyril Flower | | Liberal | Cyril Flower | | Liberal | Junior Lord of the Treasury [23 2] |
| Great Grimsby | 13 February 1886 | Edward Heneage | | Liberal | Edward Heneage | | Liberal | Chancellor of the Duchy of Lancaster [23 2] |
| Elgin Burghs | 12 February 1886 [23 1] | Alexander Asher | | Liberal | Alexander Asher | | Liberal | Solicitor General for Scotland [23 2] |
| North West Staffordshire | 12 February 1886 [23 1] | George Leveson-Gower | | Liberal | George Leveson-Gower | | Liberal | Junior Lord of the Treasury [23 2] |
| Mid Northamptonshire | 12 February 1886 [23 1] | Charles Spencer | | Liberal | Charles Spencer | | Liberal | Parliamentary Groom in Waiting [23 2] |
| Newcastle-upon-Tyne | 12 February 1886 | John Morley | | Liberal | John Morley | | Liberal | Chief Secretary for Ireland [23 2] |
| Leeds South | 12 February 1886 [23 1] | Sir Lyon Playfair | | Liberal | Sir Lyon Playfair | | Liberal | Vice President of the Committee of Council on Education [23 2] |
| Hackney South | 11 February 1886 | Charles Russell | | Liberal | Charles Russell | | Liberal | Attorney General for England and Wales [23 2] |
| Hawick Burghs | 10 February 1886 [23 1] | George Trevelyan | | Liberal | George Trevelyan | | Liberal | Secretary for Scotland [23 2] |
| Midlothian | 10 February 1886 [23 1] | William Ewart Gladstone | | Liberal | William Ewart Gladstone | | Liberal | Prime Minister, First Lord of the Treasury, Lord Privy Seal [23 2] |
| Stirling Burghs | 10 February 1886 [23 1] | Henry Campbell-Bannerman | | Liberal | Henry Campbell-Bannerman | | Liberal | Secretary of State for War [23 2] |
| Birmingham West | 9 February 1886 [23 1] | Joseph Chamberlain | | Liberal | Joseph Chamberlain | | Liberal | President of the Local Government Board [23 2] |
| Derby | 9 February 1886 [23 1] | Sir William Vernon Harcourt | | Liberal | Sir William Vernon Harcourt | | Liberal | Chancellor of the Exchequer [23 2] |
| Edinburgh South | 9 February 1886 [23 1] | Hugh Childers | | Liberal | Hugh Childers | | Liberal | Secretary of State for the Home Department [23 2] |
| Sheffield Brightside | 9 February 1886 [23 1] | A. J. Mundella | | Liberal | A. J. Mundella | | Liberal | President of the Board of Trade [23 2] |
22nd Parliament (1880–1885) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| Horsham | 16 July 1885 [22 1] | Sir Henry Fletcher | | Conservative | Sir Henry Fletcher | | Conservative | Groom in Waiting [22 2] |
| Chatham | 11 July 1885 [22 1] | John Eldon Gorst | | Conservative | Sir John Eldon Gorst | | Conservative | Solicitor General for England and Wales [22 2] |
| Brighton | 10 July 1885 [22 1] | William Thackeray Marriott | | Conservative | William Thackeray Marriott | | Conservative | Judge Advocate General [22 2] |
| Down | 8 July 1885 | Lord Arthur Hill | | Conservative | Lord Arthur Hill | | Conservative | Comptroller of the Household [22 2] |
| West Kent | 6 July 1885 [22 1] | William Legge | | Conservative | William Legge | | Conservative | Vice-Chamberlain of the Household [22 2] |
| East Devon | 4 July 1885 [22 1] | William Walrond | | Conservative | William Walrond | | Conservative | Lord Commissioner of the Treasury [22 2] |
| Bute | 3 July 1885 [22 1] | Charles Dalrymple | | Conservative | Charles Dalrymple | | Conservative | Lord Commissioner of the Treasury [22 2] |
| South Wiltshire | 3 July 1885 [22 1] | William Pleydell-Bouverie | | Conservative | William Pleydell-Bouverie | | Conservative | Treasurer of the Household [22 2] |
| Middlesex | 3 July 1885 [22 1] | Lord George Hamilton | | Conservative | Lord George Hamilton | | Conservative | First Lord of the Admiralty [22 2] |
| Woodstock | 3 July 1885 | Lord Randolph Churchill | | Conservative | Lord Randolph Churchill | | Conservative | Secretary of State for India [22 2] |
| North Leicestershire | 2 July 1885 [22 1] | Lord John Manners | | Conservative | Lord John Manners | | Conservative | Postmaster General [22 2] |
| North Lancashire | 2 July 1885 [22 1] | Frederick Stanley | | Conservative | Frederick Stanley | | Conservative | Secretary of State for the Colonies [22 2] |
| Mid Kent | 2 July 1885 [22 1] | Sir William Hart Dyke | | Conservative | Sir William Hart Dyke | | Conservative | Chief Secretary for Ireland [22 2] |
| Wilton | 2 July 1885 [22 1] | Sidney Herbert | | Conservative | Sidney Herbert | | Conservative | Lord Commissioner of the Treasury [22 2] |
| Dublin University | 1 July 1885 [22 1] | David Plunket | | Conservative | David Plunket | | Conservative | First Commissioner of Works [22 2] |
| Mid Lincolnshire | 1 July 1885 [22 1] | Henry Chaplin | | Conservative | Henry Chaplin | | Conservative | Chancellor of the Duchy of Lancaster [22 2] |
| Edward Stanhope | | Conservative | Edward Stanhope | | Conservative | President of the Board of Trade [22 2] |
| South West Lancashire | 1 July 1885 [22 1] | R. A. Cross | | Conservative | R. A. Cross | | Conservative | Home Secretary [22 2] |
| East Gloucestershire | 1 July 1885 [22 1] | Sir Michael Hicks-Beach | | Conservative | Sir Michael Hicks-Beach | | Conservative | Chancellor of the Exchequer [22 2] |
| Eye | 1 July 1885 | Ellis Ashmead-Bartlett | | Conservative | Ellis Ashmead-Bartlett | | Conservative | Civil Lord of the Admiralty [22 2] |
| Hertford | 30 June 1885 [22 1] | Arthur Balfour | | Conservative | Arthur Balfour | | Conservative | President of the Local Government Board [22 2] |
| Westminster | 29 June 1885 [22 1] | William Henry Smith | | Conservative | William Henry Smith | | Conservative | Secretary of State for War [22 2] |
| Scarborough | 26 November 1884 | William Sproston Caine | | Liberal | William Sproston Caine | | Liberal | Civil Lord of the Admiralty [22 2] |
| Stirling Burghs | 31 October 1884 [22 1] | Henry Campbell-Bannerman | | Liberal | Henry Campbell-Bannerman | | Liberal | Chief Secretary for Ireland [22 2] |
| Chelsea | 11 January 1883 [22 1] | Sir Charles Dilke | | Liberal | Sir Charles Dilke | | Liberal | President of the Local Government Board [22 2] |
| Salisbury | 20 November 1882 [22 3] | William Grenfell | | Liberal | Coleridge Kennard | | Conservative | Groom in Waiting [22 2] |
| Banffshire | 19 June 1882 [22 1] | Robert Duff | | Liberal | Robert Duff | | Liberal | Lord Commissioner of the Treasury [22 2] |
| Hawick Burghs | 18 May 1882 [22 1] | George Trevelyan | | Liberal | George Trevelyan | | Liberal | Chief Secretary for Ireland [22 2] |
| Northern West Riding of Yorkshire | 18 May 1882 | Lord Frederick Cavendish | | Liberal | Isaac Holden | | Liberal | Chief Secretary for Ireland [22 2] [22 4] |
| Elgin Burghs | 27 August 1881 [22 1] | Alexander Asher | | Liberal | Alexander Asher | | Liberal | Solicitor General for Scotland [22 2] |
| Leeds | 24 August 1881 [22 1] | Herbert Gladstone | | Liberal | Herbert Gladstone | | Liberal | Lord Commissioner of the Treasury [22 2] |
| Reading | 15 December 1880 [22 1] | George Shaw-Lefevre | | Liberal | George Shaw-Lefevre | | Liberal | First Commissioner of Works and Public Buildings [22 2] |
| Wycombe | 26 May 1880 [22 1] | William Carington | | Liberal | William Carington | | Liberal | Groom in Waiting [22 2] |
| Londonderry County | 21 May 1880 [22 1] | Hugh Law | | Liberal | Hugh Law | | Liberal | Attorney General for Ireland [22 2] |
| Wigtown Burghs | 18 May 1880 [22 5] | John McLaren | | Liberal | Mark Stewart | | Conservative | Lord Advocate [22 2] |
| Mallow | 17 May 1880 | William Moore Johnson | | Liberal | William Moore Johnson | | Liberal | Solicitor General for Ireland [22 2] |
| North East Lancashire | 17 May 1880 [22 1] | Spencer Cavendish | | Liberal | Spencer Cavendish | | Liberal | Secretary of State for India [22 2] |
| Clackmannanshire and Kinross-shire | 14 May 1880 [22 1] | William Patrick Adam | | Liberal | William Patrick Adam | | Liberal | First Commissioner of Works [22 2] |
| Denbighshire | 14 May 1880 [22 1] | George Osborne Morgan | | Liberal | George Osborne Morgan | | Liberal | Judge Advocate General [22 2] |
| Haverfordwest Boroughs | 12 May 1880 [22 1] | William Edwardes | | Liberal | William Edwardes | | Liberal | Comptroller of the Household [22 2] |
| Midlothian | 10 May 1880 [22 1] | William Ewart Gladstone | | Liberal | William Ewart Gladstone | | Liberal | Prime Minister, First Lord of the Treasury and Chancellor of the Exchequer [22 2] |
| Shrewsbury | 10 May 1880 [22 1] | Charles Cecil Cotes | | Liberal | Charles Cecil Cotes | | Liberal | Lord Commissioner of the Treasury [22 2] |
| Hastings | 10 May 1880 [22 1] | Thomas Brassey | | Liberal | Thomas Brassey | | Liberal | Civil Lord of the Admiralty [22 2] |
| Durham City | 10 May 1880 [22 1] | Farrer Herschell | | Liberal | Farrer Herschell | | Liberal | Solicitor General for England and Wales [22 2] |
| Taunton | 8 May 1880 [22 1] | Sir Henry James | | Liberal | Sir Henry James | | Liberal | Attorney General for England and Wales [22 2] |
| Sheffield | 8 May 1880 [22 1] | A. J. Mundella | | Liberal | A. J. Mundella | | Liberal | Vice-President of the Committee of the Council on Education [22 2] |
| Pontefract | 8 May 1880 [22 1] | Hugh Childers | | Liberal | Hugh Childers | | Liberal | Secretary of State for War [22 2] |
| Oxford | 8 May 1880 [22 6] | William Vernon Harcourt | | Liberal | Alexander William Hall | | Conservative | Home Secretary [22 2] |
| Marlborough | 8 May 1880 [22 1] | Lord Charles Bruce | | Liberal | Lord Charles Bruce | | Liberal | Vice-Chamberlain of the Household [22 2] |
| Chester | 8 May 1880 [22 1] [22 6] | John George Dodson | | Liberal | John George Dodson | | Liberal | President of the Local Government Board [22 2] |
| Bradford | 8 May 1880 [22 1] | William Edward Forster | | Liberal | William Edward Forster | | Liberal | Chief Secretary for Ireland [22 2] |
| Birmingham | 8 May 1880 [22 1] | John Bright | | Liberal | John Bright | | Liberal | Chancellor of the Duchy of Lancaster [22 2] |
| Joseph Chamberlain | | Liberal | Joseph Chamberlain | | Liberal | President of the Board of Trade [22 2] |
| Bath | 8 May 1880 [22 1] | Sir Arthur Hayter | | Liberal | Sir Arthur Hayter | | Liberal | Lord Commissioner of the Treasury [22 2] |
| Hackney | 7 May 1880 [22 1] | Henry Fawcett | | Liberal | Henry Fawcett | | Liberal | Postmaster General [22 2] |
| John Holms | | Liberal | John Holms | | Liberal | Lord Commissioner of the Treasury [22 2] |
21st Parliament (1874–1880) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| South Warwickshire | 21 February 1879 [21 1] | Hugh Seymour | | Conservative | Hugh Seymour | | Conservative | Comptroller of the Household [21 2] |
| Middlesex | 12 April 1878 [21 1] | Lord George Hamilton | | Conservative | Lord George Hamilton | | Conservative | Vice-President of the Committee of the Council on Education [21 2] |
| North Lancashire | 8 April 1878 [21 1] | Frederick Stanley | | Conservative | Frederick Stanley | | Conservative | Secretary of State for War [21 2] |
| York | 20 February 1878 [21 1] | James Lowther | | Conservative | James Lowther | | Conservative | Chief Secretary for Ireland [21 2] |
| Westminster | 11 August 1877 [21 1] | William Henry Smith | | Conservative | William Henry Smith | | Conservative | First Lord of the Admiralty [21 2] |
| Dublin University | 13 February 1877 [21 1] | Edward Gibson | | Conservative | Edward Gibson | | Conservative | Attorney-General for Ireland [21 2] |
| Rutlandshire | 17 August 1876 [21 1] | Gerard Noel | | Conservative | Gerard Noel | | Conservative | First Commissioner of Works [21 2] |
| Enniskillen | 15 February 1876 [21 1] | John Crichton | | Conservative | John Crichton | | Conservative | Lord Commissioner of the Treasury [21 2] |
| South Wiltshire | 4 January 1876 [21 1] | Lord Henry Thynne | | Conservative | Lord Henry Thynne | | Conservative | Treasurer of the Household [21 2] |
| Whitehaven | 16 December 1875 | George Cavendish-Bentinck | | Conservative | George Cavendish-Bentinck | | Conservative | Judge Advocate General [21 2] |
| Dublin University | 11 February 1875 [21 1] | David Robert Plunket | | Conservative | David Robert Plunket | | Conservative | Solicitor General for Ireland [21 2] |
| Preston | 24 April 1874 [21 1] | John Holker | | Conservative | John Holker | | Conservative | Solicitor General for England and Wales [21 2] |
| Falkirk Burghs | 26 March 1874 [21 1] | John Ramsay | | Liberal | John Ramsay | | Liberal | Disqualification (Held Government Contract) |
| North Staffordshire | 23 March 1874 [21 1] | Charles Adderley | | Conservative | Charles Adderley | | Conservative | President of the Board of Trade [21 2] |
| East Suffolk | 20 March 1874 [21 1] | The Lord Rendlesham | | Conservative | The Lord Rendlesham | | Conservative | Lord Commissioner of the Treasury [21 2] |
| North Leicestershire | 20 March 1874 [21 1] | Lord John Manners | | Conservative | Lord John Manners | | Conservative | Postmaster General [21 2] |
| Invernesshire | 19 March 1874 [21 1] | Donald Cameron | | Conservative | Donald Cameron | | Conservative | Parliamentary Groom in Waiting [21 2] |
| South West Lancashire | 19 March 1874 [21 1] | R. A. Cross | | Conservative | R. A. Cross | | Conservative | Home Secretary [21 2] |
| South Devonshire | 19 March 1874 [21 1] | Sir Massey Lopes | | Conservative | Sir Massey Lopes | | Conservative | Civil Lord of the Admiralty [21 2] |
| County Dublin | 18 March 1874 | Thomas Edward Taylor | | Conservative | Thomas Edward Taylor | | Conservative | Chancellor of the Duchy of Lancaster [21 2] |
| North Devonshire | 18 March 1874 [21 1] | Sir Stafford Northcote | | Conservative | Sir Stafford Northcote | | Conservative | Chancellor of the Exchequer [21 2] |
| North Northamptonshire | 18 March 1874 [21 1] | George Ward Hunt | | Conservative | George Ward Hunt | | Conservative | First Lord of the Admiralty [21 2] |
| North Northumberland | 17 March 1874 [21 1] | Earl Percy | | Conservative | Earl Percy | | Conservative | Treasurer of the Household [21 2] |
| Monmouthshire | 17 March 1874 [21 1] | Lord Henry Somerset | | Conservative | Lord Henry Somerset | | Conservative | Comptroller of the Household [21 2] |
| East Gloucestershire | 17 March 1874 [21 1] | Michael Hicks Beach | | Conservative | Michael Hicks Beach | | Conservative | Chief Secretary for Ireland [21 2] |
| Buckinghamshire | 17 March 1874 [21 1] | Benjamin Disraeli | | Conservative | Benjamin Disraeli | | Conservative | Prime Minister and First Lord of the Treasury [21 2] |
| Eye | 17 March 1874 | George Barrington | | Conservative | George Barrington | | Conservative | Vice-Chamberlain of the Household [21 2] |
| Dublin University | 16 March 1874 [21 1] | John Thomas Ball | | Conservative | John Thomas Ball | | Conservative | Attorney General for Ireland [21 2] |
| Mid Surrey | 16 March 1874 [21 1] | Richard Baggallay | | Conservative | Richard Baggallay | | Conservative | Solicitor General for England and Wales [21 2] |
| Portsmouth | 16 March 1874 [21 1] | James Dalrymple-Horn-Elphinstone | | Conservative | James Dalrymple-Horn-Elphinstone | | Conservative | Lord Commissioner of the Treasury [21 2] |
| North Lincolnshire | 16 March 1874 [21 1] | Rowland Winn | | Conservative | Rowland Winn | | Conservative | Lord Commissioner of the Treasury [21 2] |
| Huntingdon | 16 March 1874 [21 1] | John Burgess Karslake | | Conservative | John Burgess Karslake | | Conservative | Attorney General for England and Wales [21 2] |
| Glasgow and Aberdeen Universities | 14 March 1874 [21 1] | Edward Gordon | | Conservative | Edward Gordon | | Conservative | Lord Advocate [21 2] |
| North Hampshire | 14 March 1874 [21 1] | George Sclater-Booth | | Conservative | George Sclater-Booth | | Conservative | President of the Local Government Board [21 2] |
| Liverpool | 14 March 1874 [21 1] | Dudley Ryder | | Conservative | Dudley Ryder | | Conservative | Vice-President of the Committee of the Council on Education [21 2] |
| Oxford University | 14 March 1874 [21 1] | Gathorne Hardy | | Conservative | Gathorne Hardy | | Conservative | Secretary of State for War [21 2] |
| New Shoreham | 13 March 1874 [21 1] | Stephen Cave | | Conservative | Stephen Cave | | Conservative | Judge Advocate General [21 2] |
| Chichester | 13 March 1874 [21 1] | Lord Henry Lennox | | Conservative | Lord Henry Lennox | | Conservative | First Commissioner of Works [21 2] |
20th Parliament (1868–1874) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| Oxford | 6 December 1873 [20 1] | William Vernon Harcourt | | Liberal | William Vernon Harcourt | | Liberal | Solicitor General for England and Wales [20 2] |
| Edinburgh and St. Andrews Universities | 4 December 1873 [20 1] | Lyon Playfair | | Liberal | Lyon Playfair | | Liberal | Postmaster General [20 2] |
| Haverfordwest Boroughs | 24 November 1873 | William Edwardes | | Liberal | William Edwardes | | Liberal | Parliamentary Groom in Waiting [20 2] |
| Birmingham | 20 October 1873 [20 1] | John Bright | | Liberal | John Bright | | Liberal | Chancellor of the Duchy of Lancaster [20 2] |
| Taunton | 13 October 1873 | Henry James | | Liberal | Henry James | | Liberal | Solicitor General for England and Wales [20 2] |
| Northern West Riding of Yorkshire | 27 August 1873 [20 1] | Lord Frederick Cavendish | | Liberal | Lord Frederick Cavendish | | Liberal | Lord Commissioner of the Treasury [20 2] |
| Pontefract | 15 August 1872 [20 3] | Hugh Childers | | Liberal | Hugh Childers | | Liberal | Chancellor of the Duchy of Lancaster and Paymaster General [20 2] |
| Flintshire | 2 March 1872 [20 1] | Lord Richard Grosvenor | | Liberal | Lord Richard Grosvenor | | Liberal | Vice-Chamberlain of the Household [20 2] |
| Dover | 25 November 1871 | George Jessel | | Liberal | George Jessel | | Liberal | Solicitor General for England and Wales [20 2] |
| Halifax | 13 March 1871 [20 1] | James Stansfeld | | Liberal | James Stansfeld | | Liberal | President of the Poor Law Board [20 2] |
| County Limerick | 28 January 1871 [20 1] | William Monsell | | Liberal | William Monsell | | Liberal | Postmaster General [20 2] |
| Durham City | 14 January 1871 [20 1] | John Robert Davison | | Liberal | John Robert Davison | | Liberal | Judge Advocate General [20 2] |
| Plymouth | 15 August 1870 [20 1] | Sir Robert Collier | | Liberal | Sir Robert Collier | | Liberal | Recorder of Bristol [20 2] |
| Londonderry City | 15 February 1870 | Richard Dowse | | Liberal | Richard Dowse | | Liberal | Solicitor General for Ireland [20 2] |
| Whitby | 18 November 1869 | William Henry Gladstone | | Liberal | William Henry Gladstone | | Liberal | Lord Commissioner of the Treasury [20 2] |
| Tower Hamlets | 8 November 1869 [20 1] | Acton Smee Ayrton | | Liberal | Acton Smee Ayrton | | Liberal | First Commissioner of Works and Public Buildings [20 2] |
| County Louth | 11 January 1869 [20 1] | Chichester Fortescue | | Liberal | Chichester Fortescue | | Liberal | Chief Secretary for Ireland [20 2] |
| Kildare | 11 January 1869 [20 1] | Lord Otho Fitzgerald | | Liberal | Lord Otho Fitzgerald | | Liberal | Comptroller of the Household [20 2] |
| Westmeath | 7 January 1869 [20 1] | Algernon Greville | | Liberal | Algernon Greville | | Liberal | Parliamentary Groom in Waiting [20 2] |
| Kerry | 7 January 1869 [20 1] | Valentine Browne | | Liberal | Valentine Browne | | Liberal | Vice-Chamberlain of the Household [20 2] |
Clackmannanshire and Kinross-shire | 6 January 1869 [20 1] | William Patrick Adam | | Liberal | William Patrick Adam | | Liberal | Lord Commissioner of the Treasury [20 2] |
| Clare | 5 January 1869 [20 1] | Sir Colman O'Loghlen | | Liberal | Sir Colman O'Loghlen | | Liberal | Judge Advocate General [20 2] |
| Mallow | 4 January 1869 [20 1] | Edward Sullivan | | Liberal | Edward Sullivan | | Liberal | Attorney General for Ireland [20 2] |
| Wigtown Burghs | 4 January 1869 [20 1] | George Young | | Liberal | George Young | | Liberal | Solicitor General for Scotland [20 2] |
| Hawick Burghs | 4 January 1869 [20 1] | George Trevelyan | | Liberal | George Trevelyan | | Liberal | Civil Lord of the Admiralty [20 2] |
| Oxford | 22 December 1868 [20 1] | Edward Cardwell | | Liberal | Edward Cardwell | | Liberal | Secretary of State for War [20 2] |
| London University | 21 December 1868 [20 1] | Robert Lowe | | Liberal | Robert Lowe | | Liberal | Chancellor of the Exchequer [20 2] |
| Truro | 21 December 1868 [20 1] | John Cranch Walker Vivian | | Liberal | John Cranch Walker Vivian | | Liberal | Lord Commissioner of the Treasury [20 2] |
| Ripon | 21 December 1868 [20 1] | Lord John Hay | | Liberal | Lord John Hay | | Liberal | Junior Naval Lord [20 2] |
| Pontefract | 21 December 1868 [20 1] | Hugh Childers | | Liberal | Hugh Childers | | Liberal | First Lord of the Admiralty [20 2] |
| Plymouth | 21 December 1868 [20 1] | Sir Robert Collier | | Liberal | Sir Robert Collier | | Liberal | Attorney General for England and Wales [20 2] |
| Halifax | 21 December 1868 [20 1] | James Stansfeld | | Liberal | James Stansfeld | | Liberal | Lord Commissioner of the Treasury [20 2] |
| Exeter | 21 December 1868 [20 1] | John Coleridge | | Liberal | Sir John Coleridge | | Liberal | Solicitor General for England and Wales [20 2] |
| Bradford | 21 December 1868 [20 1] | William Edward Forster | | Liberal | William Edward Forster | | Liberal | Vice President of the Committee of Council on Education [20 2] |
| Birmingham | 21 December 1868 [20 1] | John Bright | | Liberal | John Bright | | Liberal | President of the Board of Trade [20 2] |
| Southwark | 21 December 1868 [20 1] | Austen Henry Layard | | Liberal | Austen Henry Layard | | Liberal | First Commissioner of Works [20 2] |
| Greenwich | 21 December 1868 [20 1] | William Ewart Gladstone | | Liberal | William Ewart Gladstone | | Liberal | Prime Minister and First Lord of the Treasury [20 2] |
| City of London | 21 December 1868 [20 1] | George Goschen | | Liberal | George Goschen | | Liberal | President of the Poor Law Board [20 2] |
19th Parliament (1865–1868) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| North Northamptonshire | 7 March 1868 [19 1] | George Ward Hunt | | Conservative | George Ward Hunt | | Conservative | Chancellor of the Exchequer [19 2] |
| Helston | 19 February 1868 [19 1] | William Brett | | Conservative | William Brett | | Conservative | Solicitor General for England and Wales [19 2] |
| Andover | 22 July 1867 [19 1] | John Burgess Karslake | | Conservative | John Burgess Karslake | | Conservative | Attorney General for England and Wales [19 2] |
| Cambridge University | 22 July 1867 [19 1] | Charles Jasper Selwyn | | Conservative | Charles Jasper Selwyn | | Conservative | Solicitor General for England and Wales [19 2] |
| North Lancashire | 1 July 1867 [19 1] | John Wilson-Patten | | Conservative | John Wilson-Patten | | Conservative | Chancellor of the Duchy of Lancaster [19 2] |
| Oxford University | 20 May 1867 [19 1] | Gathorne Hardy | | Conservative | Gathorne Hardy | | Conservative | Home Secretary [19 2] |
| Dublin University | 30 March 1867 [19 1] | Hedges Eyre Chatterton | | Conservative | Hedges Eyre Chatterton | | Conservative | Attorney-General for Ireland [19 2] |
| Huntingdonshire | 25 March 1867 [19 1] | Lord Robert Montagu | | Conservative | Lord Robert Montagu | | Conservative | Vice-President of the Committee on Education [19 2] |
| Tyrone | 21 March 1867 [19 1] | Henry Lowry-Corry | | Conservative | Henry Lowry-Corry | | Conservative | First Lord of the Admiralty [19 2] |
| North Devon | 18 March 1867 [19 1] | Stafford Northcote | | Conservative | Stafford Northcote | | Conservative | Secretary of State for India [19 2] |
| Droitwich | 13 March 1867 [19 1] | John Pakington | | Conservative | John Pakington | | Conservative | Secretary of State for War [19 2] |
| South Shropshire | 8 March 1867 [19 1] | Percy Egerton Herbert | | Conservative | Percy Egerton Herbert | | Conservative | Treasurer of the Household [19 2] |
| Galway Borough | 12 February 1867 [19 1] | Michael Morris | | Conservative | Michael Morris | | Conservative | Attorney General for Ireland [19 2] |
| West Gloucestershire | 15 November 1866 [19 1] | John Rolt | | Conservative | John Rolt | | Conservative | Attorney General for England and Wales [19 2] |
| Abingdon | 6 August 1866 [19 1] | Charles Lindsay | | Conservative | Charles Lindsay | | Conservative | Groom in Waiting [19 2] |
| Galway Borough | 2 August 1866 | Michael Morris | | Liberal | Michael Morris | | Conservative | Solicitor General for Ireland [19 2] |
| Peeblesshire | 24 July 1866 [19 1] | Graham Graham-Montgomery | | Conservative | Graham Graham-Montgomery | | Conservative | Lord Commissioner of the Treasury [19 2] |
| Bridgnorth | 21 July 1866 [19 1] | Henry Whitmore | | Conservative | Henry Whitmore | | Conservative | Lord Commissioner of the Treasury [19 2] |
| Tyrone | 20 July 1866 [19 1] | Lord Claud Hamilton | | Conservative | Lord Claud Hamilton | | Conservative | Vice-Chamberlain of the Household [19 2] |
| Tyrone | 18 July 1866 [19 1] | Henry Lowry-Corry | | Conservative | Henry Lowry-Corry | | Conservative | Vice-President of the Committee of the Council on Education [19 2] |
| Cambridgeshire | 17 July 1866 [19 1] | Viscount Royston | | Conservative | Viscount Royston | | Conservative | Comptroller of the Household [19 2] |
| Antrim | 17 July 1866 [19 1] | George Henry Seymour | | Conservative | George Henry Seymour | | Conservative | Third Naval Lord [19 2] |
| North Essex | 16 July 1866 [19 1] | Charles Du Cane | | Conservative | Charles Du Cane | | Conservative | Civil Lord of the Admiralty [19 2] |
| Rutlandshire | 14 July 1866 [19 1] | Gerard Noel | | Conservative | Gerard Noel | | Conservative | Lord Commissioner of the Treasury [19 2] |
| North Northamptonshire | 14 July 1866 [19 1] | William Cecil | | Conservative | William Cecil | | Conservative | Treasurer of the Household [19 2] |
| North Leicestershire | 14 July 1866 [19 1] | Lord John Manners | | Conservative | Lord John Manners | | Conservative | First Commissioner of Works [19 2] |
| North Devon | 14 July 1866 [19 1] | Stafford Northcote | | Conservative | Stafford Northcote | | Conservative | President of the Board of Trade [19 2] |
| New Shoreham | 14 July 1866 [19 1] | Stephen Cave | | Conservative | Stephen Cave | | Conservative | Paymaster General and Vice-President of the Board of Trade [19 2] |
| Belfast | 13 July 1866 [19 1] | Hugh Cairns | | Conservative | Hugh Cairns | | Conservative | Attorney General for England and Wales [19 2] |
| Buckinghamshire | 13 July 1866 [19 1] | Benjamin Disraeli | | Conservative | Benjamin Disraeli | | Conservative | Chancellor of the Exchequer [19 2] |
| Oxford University | 12 July 1866 [19 1] | Gathorne Hardy | | Conservative | Gathorne Hardy | | Conservative | President of the Poor Law Board [19 2] |
| Stamford | 12 July 1866 [19 1] | Robert Cecil | | Conservative | Robert Cecil | | Conservative | Secretary of State for India [19 2] |
| Sir John Dalrymple-Hay | | Conservative | Sir John Dalrymple-Hay | | Conservative | Fourth Naval Lord [19 2] |
| Bridgewater | 12 July 1866 | George Patton | | Conservative | Philip Vanderbyl | | Liberal | Lord Advocate [19 2] |
| Cambridge University | 11 July 1866 [19 1] | Spencer Horatio Walpole | | Conservative | Spencer Horatio Walpole | | Conservative | Home Secretary [19 2] |
| King's Lynn | 11 July 1866 [19 1] | Lord Stanley | | Conservative | Lord Stanley | | Conservative | Foreign Secretary [19 2] |
| Huntingdon | 11 July 1866 [19 1] | Jonathan Peel | | Conservative | Jonathan Peel | | Conservative | Secretary of State for War [19 2] |
| Guildford | 11 July 1866 | William Bovill | | Conservative | William Bovill | | Conservative | Solicitor General for England and Wales [19 2] |
| Durham | 11 July 1866 [19 1] | John Mowbray | | Conservative | John Mowbray | | Conservative | Judge Advocate General [19 2] |
| Droitwich | 11 July 1866 [19 1] | John Pakington | | Conservative | John Pakington | | Conservative | First Lord of the Admiralty [19 2] |
| Cockermouth | 11 July 1866 [19 1] | Lord Naas | | Conservative | Lord Naas | | Conservative | Chief Secretary for Ireland [19 2] |
| County Waterford | 7 June 1866 [19 1] | John Esmonde | | Liberal | John Esmonde | | Liberal | Lord Commissioner of the Treasury [19 2] |
| Winchester | 4 June 1866 | John Bonham-Carter | | Liberal | John Bonham-Carter | | Liberal | Lord Commissioner of the Treasury [19 2] |
| Kildare | 21 May 1866 [19 1] | Lord Otho FitzGerald | | Liberal | Lord Otho FitzGerald | | Liberal | Treasurer of the Household [19 2] |
| Reading | 5 May 1866 [19 1] | George Shaw-Lefevre | | Liberal | George Shaw-Lefevre | | Liberal | Civil Lord of the Admiralty [19 2] |
| Ripon | 28 March 1866 [19 1] | Lord John Hay | | Liberal | Lord John Hay | | Liberal | Fifth Naval Lord [19 2] |
| County Louth | 22 March 1866 [19 1] | Chichester Parkinson-Fortescue | | Liberal | Chichester Parkinson-Fortescue | | Liberal | Chief Secretary for Ireland [19 2] |
| County Limerick | 1 March 1866 [19 1] | William Monsell | | Liberal | William Monsell | | Liberal | Vice-President of the Board of Trade and Paymaster General [19 2] |
| North Lancashire | 28 February 1866 [19 1] | Spender Cavendish | | Liberal | Spender Cavendish | | Liberal | Secretary of State for War [19 2] |
| Sunderland | 28 February 1866 | Henry Fenwick | | Liberal | John Candlish | | Liberal | Civil Lord of the Admiralty [19 2] |
| City of London | 26 February 1866 [19 1] | George Goschen | | Liberal | George Goschen | | Liberal | Chancellor of the Duchy of Lancaster [19 2] |
18th Parliament (1859–1865) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| Clackmannanshire and Kinross-shire | 20 April 1865 [18 1] | William Patrick Adam | | Liberal | William Patrick Adam | | Liberal | Lord of the Treasury [18 2] |
| Gloucester | 25 May 1864 [18 1] | John Joseph Powell | | Liberal | John Joseph Powell | | Liberal | Recorder of Wolverhampton [18 2] |
| Merthyr Tydfil | 25 April 1864 [18 1] | Henry Bruce | | Liberal | Henry Bruce | | Liberal | Vice-President of the Committee on Education [18 2] |
| Pontefract | 20 April 1864 [18 1] | Hugh Childers | | Liberal | Hugh Childers | | Liberal | Civil Lord of the Admiralty [18 2] |
| Oxford | 9 April 1864 [18 1] | Edward Cardwell | | Liberal | Edward Cardwell | | Liberal | Secretary of State for the Colonies [18 2] |
| Richmond | 17 October 1863 [18 1] | Roundell Palmer | | Liberal | Roundell Palmer | | Liberal | Attorney General for England and Wales [18 2] |
| Plymouth | 17 October 1863 [18 1] | Robert Collier | | Liberal | Robert Collier | | Liberal | Solicitor General for England and Wales [18 2] |
| Halifax | 28 April 1863 [18 1] | James Stansfeld | | Liberal | James Stansfeld | | Liberal | Civil Lord of the Admiralty [18 2] |
| North Lancashire | 24 March 1863 [18 1] | Spencer Cavendish | | Liberal | Spencer Cavendish | | Liberal | Civil Lord of the Admiralty [18 2] |
| Longford | 7 March 1862 | Luke White | | Liberal | Myles William O'Reilly | | Liberal | Lord of the Treasury [18 2] |
| Tamworth | 31 July 1861 [18 1] | Robert Peel | | Liberal | Robert Peel | | Liberal | Chief Secretary for Ireland [18 2] |
| Morpeth | 31 July 1861 [18 1] | George Grey | | Liberal | George Grey | | Liberal | Home Secretary [18 2] |
| Oxford | 30 July 1861 [18 1] | Edward Cardwell | | Liberal | Edward Cardwell | | Liberal | Chancellor of the Duchy of Lancaster [18 2] |
| Durham City | 8 July 1861 [18 1] | William Atherton | | Liberal | William Atherton | | Liberal | Attorney General for England and Wales [18 2] |
| Southwark | 24 April 1861 [18 1] | John Locke | | Liberal | John Locke | | Liberal | Recorder of Brighton [18 2] |
| Tiverton | 28 March 1861 [18 1] | Henry John Temple | | Liberal | Henry John Temple | | Liberal | Lord Warden of the Cinque Ports [18 2] |
| County Cork | 5 March 1860 | Rickard Deasy | | Liberal | Rickard Deasy | | Liberal | Attorney General for Ireland [18 2] |
| Hertford | 13 February 1860 [18 1] | William Cowper | | Liberal | William Cowper | | Liberal | First Commissioner of Works [18 2] |
| Gateshead | 13 February 1860 [18 1] | William Hutt | | Liberal | William Hutt | | Liberal | Vice-President of the Board of Trade and Paymaster General [18 2] |
| Liskeard | 9 January 1860 [18 1] | William Atherton | | Liberal | William Atherton | | Liberal | Solicitor General for England and Wales [18 2] |
| Hertford | 18 August 1859 | William Cowper | | Liberal | William Cowper | | Liberal | Vice-President of the Board of Trade and Paymaster General [18 2] |
| Wicklow | 18 July 1859 [18 1] | Lord Proby | | Liberal | Lord Proby | | Liberal | Comptroller of the Household [18 2] |
| Wolverhampton | 9 July 1859 [18 1] | Charles Pelham Villiers | | Liberal | Charles Pelham Villiers | | Liberal | President of the Poor Law Board [18 2] |
| Ashton-under-Lyne | 9 July 1859 [18 1] | Thomas Milner Gibson | | Liberal | Thomas Milner Gibson | | Liberal | President of the Board of Trade [18 2] |
| West Gloucestershire | 7 July 1859 [18 1] | Robert Kingscote | | Liberal | Robert Kingscote | | Liberal | Groom in Waiting [18 2] |
| Lichfield | 6 July 1859 [18 1] | Lord Alfred Paget | | Liberal | Lord Alfred Paget | | Liberal | Chief Equerry and Clerk Marshal [18 2] |
| Kerry | 5 July 1859 [18 1] | Valentine Browne | | Liberal | Valentine Browne | | Liberal | Vice-Chamberlain of the Household [18 2] [18 3] |
| County Cork | 5 July 1859 [18 1] | Rickard Deasy | | Liberal | Rickard Deasy | | Liberal | Solicitor General for Ireland [18 2] |
| Oxford University | 1 July 1859 | William Ewart Gladstone | | Peelite | William Ewart Gladstone | | Liberal | Chancellor of the Exchequer [18 2] |
| Clonmel | 1 July 1859 [18 1] | John Bagwell | | Liberal | John Bagwell | | Liberal | Lord Commissioner of the Treasury [18 2] |
| Ennis | 29 June 1859 [18 1] | John FitzGerald | | Liberal | John FitzGerald | | Liberal | Attorney General for Ireland [18 2] |
| South Wiltshire | 29 June 1859 [18 1] | Sidney Herbert | | Liberal | Sidney Herbert | | Liberal | Secretary of State for War and Secretary at War [18 2] |
| Edinburgh | 28 June 1859 [18 1] | James Moncreiff | | Liberal | James Moncreiff | | Liberal | Lord Advocate [18 2] |
| Sandwich | 28 June 1859 | Edward Knatchbull-Hugessen | | Liberal | Edward Knatchbull-Hugessen | | Liberal | Lord Commissioner of the Treasury [18 2] |
| Norwich | 28 June 1859 | William Keppel | | Liberal | William Keppel | | Liberal | Treasurer of the Household [18 2] [18 4] |
| Newcastle upon Tyne | 28 June 1859 | Thomas Emerson Headlam | | Liberal | Thomas Emerson Headlam | | Liberal | Judge Advocate General [18 2] |
| Halifax | 28 June 1859 [18 1] | Charles Wood | | Liberal | Charles Wood | | Liberal | Secretary of State for India [18 2] |
| Bedford | 28 June 1859 | Samuel Whitbread | | Liberal | Samuel Whitbread | | Liberal | Civil Lord of the Admiralty [18 2] |
| Wigtown Burghs | 27 June 1859 [18 1] | William Dunbar | | Liberal | William Dunbar | | Liberal | Lord Commissioner of the Treasury [18 2] |
| Radnor Boroughs | 27 June 1859 [18 1] | George Cornewall Lewis | | Liberal | George Cornewall Lewis | | Liberal | Home Secretary [18 2] |
| Wolverhampton | 27 June 1859 [18 1] | Richard Bethell | | Liberal | Richard Bethell | | Liberal | Attorney General for England and Wales [18 2] |
| Tiverton | 27 June 1859 [18 1] | Henry John Temple | | Liberal | Henry John Temple | | Liberal | Prime Minister and First Lord of the Treasury [18 2] |
| Reading | 27 June 1859 [18 1] | Henry Singer Keating | | Liberal | Henry Singer Keating | | Liberal | Solicitor General for England and Wales [18 2] |
| Oxford | 27 June 1859 [18 1] | Edward Cardwell | | Liberal | Edward Cardwell | | Liberal | Chief Secretary for Ireland [18 2] |
| Morpeth | 27 June 1859 [18 1] | George Grey | | Liberal | George Grey | | Liberal | Chancellor of the Duchy of Lancaster [18 2] |
| Lewes | 27 June 1859 [18 1] | Henry Fitzroy | | Liberal | Henry Fitzroy | | Liberal | First Commissioner of Works [18 2] |
| Devonport | 27 June 1859 [18 1] | James Wilson | | Liberal | James Wilson | | Liberal | Vice-President of the Board of Trade and Paymaster General [18 2] |
| Calne | 27 June 1859 [18 1] | Robert Lowe | | Liberal | Robert Lowe | | Liberal | Vice-President of the Committee of the Council on Education [18 2] |
| Ashton-under-Lyne | 27 June 1859 [18 1] | Thomas Milner Gibson | | Liberal | Thomas Milner Gibson | | Liberal | President of the Poor Law Board [18 2] |
| City of London | 27 June 1859 [18 1] | Lord John Russell | | Liberal | Lord John Russell | | Liberal | Foreign Secretary [18 2] |
17th Parliament (1857–1859) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| Stirlingshire | 14 March 1859 [17 1] | Peter Blackburn | | Conservative | Peter Blackburn | | Conservative | Junior Lord of the Treasury [17 2] |
| North Northumberland | 10 March 1859 [17 1] | Algernon Percy | | Conservative | Algernon Percy | | Conservative | Vice-President of the Board of Trade and Paymaster General [17 2] |
| West Sussex | 9 March 1859 [17 1] | Charles Gordon-Lennox | | Conservative | Charles Gordon-Lennox | | Conservative | President of the Poor Law Board [17 2] |
| North Wiltshire | 8 March 1859 [17 1] | T. H. S. Sotheron-Estcourt | | Conservative | T. H. S. Sotheron-Estcourt | | Conservative | Home Secretary [17 2] |
| Tewkesbury | 8 March 1859 | Frederick Lygon | | Conservative | Frederick Lygon | | Conservative | Civil Lord of the Admiralty [17 2] |
| Boston | 3 February 1859 [17 1] | William Henry Adams | | Conservative | William Henry Adams | | Conservative | Recorder of Derby [17 2] |
| Hertfordshire | 8 June 1858 [17 1] | Edward Bulwer-Lytton | | Conservative | Edward Bulwer-Lytton | | Conservative | Secretary of State for the Colonies [17 2] |
| King's Lynn | 5 June 1858 [17 1] | Lord Stanley | | Conservative | Lord Stanley | | Conservative | President of the Board of Control [17 2] |
| City Durham | 17 March 1858 [17 1] | John Mowbray | | Conservative | John Mowbray | | Conservative | Judge Advocate General [17 2] |
| Tyrone | 11 March 1858 [17 1] | Lord Claud Hamilton | | Conservative | Lord Claud Hamilton | | Conservative | Treasurer of the Household [17 2] |
| North Northumberland | 11 March 1858 [17 1] | Algernon Percy | | Conservative | Algernon Percy | | Conservative | Civil Lord of the Admiralty [17 2] |
| County Dublin | 11 March 1858 [17 1] | Thomas Edward Taylor | | Conservative | Thomas Edward Taylor | | Conservative | Junior Lord of the Treasury [17 2] |
| South Shropshire | 9 March 1858 [17 1] | Orlando Bridgeman | | Conservative | Orlando Bridgeman | | Conservative | Vice-Chamberlain of the Household [17 2] |
| Enniskillen | 9 March 1858 [17 1] | James Whiteside | | Conservative | James Whiteside | | Conservative | Attorney-General for Ireland [17 2] |
| North Staffordshire | 8 March 1858 [17 1] | Charles Adderley | | Conservative | Charles Adderley | | Conservative | Vice-President of the Committee of the Council on Education and President of the Board of Health [17 2] |
| North Leicestershire | 8 March 1858 [17 1] | Lord John Manners | | Conservative | Lord John Manners | | Conservative | First Commissioner of Works [17 2] |
| Buckinghamshire | 8 March 1858 [17 1] | Benjamin Disraeli | | Conservative | Benjamin Disraeli | | Conservative | Chancellor of the Exchequer [17 2] |
| East Suffolk | 6 March 1858 [17 1] | Fitzroy Kelly | | Conservative | Fitzroy Kelly | | Conservative | Attorney General for England and Wales [17 2] |
| Oxfordshire | 6 March 1858 [17 1] | J. W. Henley | | Conservative | J. W. Henley | | Conservative | President of the Board of Trade [17 2] |
| Chichester | 6 March 1858 [17 1] | Lord Henry Lennox | | Conservative | Lord Henry Lennox | | Conservative | Junior Lord of the Treasury [17 2] |
| North Wiltshire | 5 March 1858 [17 1] | T. H. S. Sotheron-Estcourt | | Conservative | T. H. S. Sotheron-Estcourt | | Conservative | President of the Poor Law Board [17 2] |
| Belfast | 5 March 1858 [17 1] | Hugh Cairns | | Conservative | Hugh Cairns | | Conservative | Solicitor General for England and Wales [17 2] |
| King's Lynn | 4 March 1858 [17 1] | Lord Stanley | | Conservative | Lord Stanley | | Conservative | Secretary of State for the Colonies [17 2] |
| Huntingdon | 4 March 1858 [17 1] | Jonathan Peel | | Conservative | Jonathan Peel | | Conservative | Secretary of State for War and Secretary at War [17 2] |
| Cambridge University | 4 March 1858 [17 1] | Spencer Horatio Walpole | | Conservative | Spencer Horatio Walpole | | Conservative | Home Secretary [17 2] |
| Wenlock | 3 March 1858 [17 1] | George Weld-Forester | | Conservative | George Weld-Forester | | Conservative | Comptroller of the Household [17 2] |
| Droitwich | 3 March 1858 [17 1] | Sir John Pakington | | Conservative | Sir John Pakington | | Conservative | First Lord of the Admiralty [17 2] |
| Cockermouth | 3 March 1858 [17 1] | Lord Naas | | Conservative | Lord Naas | | Conservative | Chief Secretary for Ireland [17 2] |
| Bridgnorth | 3 March 1858 [17 1] | Henry Whitmore | | Conservative | Henry Whitmore | | Conservative | Junior Lord of the Treasury [17 2] |
| Kerry | 9 June 1857 [17 1] | Henry Arthur Herbert | | Whig | Henry Arthur Herbert | | Whig | Chief Secretary for Ireland [17 2] |
| Reading | 2 June 1857 [17 1] | Henry Singer Keating | | Whig | Henry Singer Keating | | Whig | Solicitor General for England and Wales [17 2] |
| Penryn and Falmouth | 27 May 1857 [17 1] | Thomas Baring | | Whig | Thomas Baring | | Whig | Civil Lord of the Admiralty [17 2] |
16th Parliament (1852–1857) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| County Limerick | 17 February 1857 [16 1] | William Monsell | | Whig | William Monsell | | Whig | President of the Board of Health [16 2] |
| Buteshire | 12 February 1857 [16 1] | James Stuart-Wortley | | Peelite | James Stuart-Wortley | | Peelite | Solicitor General for England and Wales [16 2] |
| Hertford | 9 February 1857 [16 1] | William Cowper | | Whig | William Cowper | | Whig | Vice-President of the Committee of the Council on Education [16 2] |
| Aylesbury | 9 February 1857 [16 1] | Richard Bethell | | Whig | Richard Bethell | | Whig | Attorney General for England and Wales [16 2] |
| Kerry | 9 August 1856 [16 1] | Valentine Browne | | Whig | Valentine Browne | | Whig | Comptroller of the Household [16 2] |
| Ennis | 8 April 1856 [16 1] | John FitzGerald | | Whig | John FitzGerald | | Whig | Attorney-General for Ireland [16 2] |
| Leeds | 6 February 1856 [16 1] | Matthew Talbot Baines | | Whig | Matthew Talbot Baines | | Whig | Chancellor of the Duchy of Lancaster [16 2] |
| Taunton | 5 February 1856 [16 1] | Henry Labouchere | | Whig | Henry Labouchere | | Whig | Secretary of State for the Colonies [16 2] |
| Kilmarnock Burghs | 16 August 1855 [16 1] | Edward Pleydell-Bouverie | | Whig | Edward Pleydell-Bouverie | | Whig | President of the Poor Law Board [16 2] |
| Kidderminster | 14 August 1855 [16 1] | Robert Lowe | | Whig | Robert Lowe | | Whig | Vice-President of the Board of Trade and Paymaster General [16 2] |
| Hertford | 14 August 1855 [16 1] | William Cowper | | Whig | William Cowper | | Whig | President of the Board of Health [16 2] |
| Marylebone | 28 July 1855 [16 1] | Sir Benjamin Hall | | Peelite | Sir Benjamin Hall | | Peelite | First Commissioner of Works [16 2] |
| Southwark | 27 July 1855 [16 1] | Sir William Molesworth | | Radical | Sir William Molesworth | | Radical | Secretary of State for the Colonies [16 2] |
| Kilmarnock Burghs | 7 April 1855 [16 1] | Edward Pleydell-Bouverie | | Whig | Edward Pleydell-Bouverie | | Whig | Vice-President of the Board of Trade and Paymaster General [16 2] |
| Lewes | 5 April 1855 [16 1] | Henry Brand | | Whig | Henry Brand | | Whig | Junior Lord of the Treasury [16 2] |
| Gloucester | 31 March 1855 [16 1] | William Philip Price | | Whig | William Philip Price | | Whig | Seeks re-election after his firm was granted a contract to supply huts to the army in the Crimea |
| Tamworth | 14 March 1855 [16 1] | Sir Robert Peel | | Peelite | Sir Robert Peel | | Peelite | Civil Lord of the Admiralty [16 2] |
| Portsmouth | 14 March 1855 | Charles Monck | | Whig | Charles Monck | | Whig | Junior Lord of the Treasury [16 2] |
| Forfarshire | 10 March 1855 [16 1] | Adam Duncan | | Whig | Adam Duncan | | Whig | Junior Lord of the Treasury [16 2] |
| Ennis | 8 March 1855 [16 1] | John FitzGerald | | Independent Irish | John FitzGerald | | Whig | Solicitor-General for Ireland [16 2] |
| Athlone | 7 March 1855 [16 1] | William Keogh | | Whig | William Keogh | | Whig | Attorney-General for Ireland [16 2] |
| Stroud | 6 March 1855 [16 1] | Edward Horsman | | Whig | Edward Horsman | | Whig | Chief Secretary for Ireland [16 2] |
| Radnor Boroughs | 5 March 1855 [16 1] | George Cornewall Lewis | | Whig | George Cornewall Lewis | | Whig | Chancellor of the Exchequer [16 2] |
| Northampton | 5 March 1855 [16 1] | Robert Vernon Smith | | Whig | Robert Vernon Smith | | Whig | President of the Board of Control [16 2] |
| Halifax | 3 March 1855 [16 1] | Sir Charles Wood | | Whig | Sir Charles Wood | | Whig | First Lord of the Admiralty [16 2] |
| City of London | 3 March 1855 [16 1] | Lord John Russell | | Whig | Lord John Russell | | Whig | Secretary of State for the Colonies [16 2] |
| South Wiltshire | 15 February 1855 [16 1] | Sidney Herbert | | Peelite | Sidney Herbert | | Peelite | Secretary of State for the Colonies [16 2] |
| Tiverton | 12 February 1855 [16 1] | Henry John Temple | | Whig | Henry John Temple | | Whig | Prime Minister and First Lord of the Treasury [16 2] |
| Sunderland | 2 January 1855 | William Digby Seymour | | Whig | Henry Fenwick | | Whig | Recorder of Newcastle [16 2] |
| Marylebone | 16 August 1854 [16 1] | Sir Benjamin Hall | | Whig | Sir Benjamin Hall | | Whig | President of the Board of Health [16 2] |
| Morpeth | 17 June 1854 [16 1] | Sir George Grey | | Whig | Sir George Grey | | Whig | Secretary of State for the Colonies [16 2] |
| City of London | 14 June 1854 [16 1] | Lord John Russell | | Whig | Lord John Russell | | Whig | Lord President of the Council [16 2] |
| Southampton | 12 April 1854 [16 1] | Alexander Cockburn | | Whig | Alexander Cockburn | | Whig | Recorder of Bristol [16 2] |
| Louth | 27 February 1854 | Chichester Fortescue | | Whig | Chichester Fortescue | | Whig | Junior Lord of the Treasury [16 2] |
| Athlone | 23 April 1853 | William Keogh | | Independent Irish | William Keogh | | Whig | Solicitor-General for Ireland [16 2] |
| Forfarshire | 25 February 1853 [16 1] | Lauderdale Maule | | Whig | Lauderdale Maule | | Whig | Surveyor-General of the Ordnance [16 2] |
| Oxford University | 20 January 1853 | William Ewart Gladstone | | Peelite | William Ewart Gladstone | | Peelite | Chancellor of the Exchequer [16 2] |
| Carlow Borough | 20 January 1853 | John Sadleir | | Independent Irish | John Alexander | | Conservative | Junior Lord of the Treasury [16 2] |
| County Limerick | 12 January 1853 [16 1] | William Monsell | | Whig | William Monsell | | Whig | Clerk of the Ordnance [16 2] |
| Dumfriesshire | 12 January 1853 [16 1] | Archibald Douglas | | Peelite | Archibald Douglas | | Peelite | Comptroller of the Household [16 2] |
| South Wiltshire | 11 January 1853 [16 1] | Sidney Herbert | | Peelite | Sidney Herbert | | Peelite | Secretary at War [16 2] |
| Haddingtonshire | 11 January 1853 [16 1] | Francis Charteris | | Peelite | Francis Charteris | | Peelite | Junior Lord of the Treasury [16 2] |
| Cavan | 10 January 1853 [16 1] | Sir John Young | | Peelite | Sir John Young | | Peelite | Chief Secretary for Ireland [16 2] |
| Southampton | 7 January 1853 | Sir Alexander Cockburn | | Whig | Sir Alexander Cockburn | | Whig | Attorney General for England and Wales [16 2] |
| Aylesbury | 6 January 1853 [16 1] | Richard Bethell | | Whig | Richard Bethell | | Whig | Solicitor General for England and Wales [16 2] |
| Lichfield | 5 January 1853 [16 1] | Lord Alfred Paget | | Whig | Lord Alfred Paget | | Whig | Chief Equerry and Clerk Marshal [16 2] |
| Halifax | 5 January 1853 | Charles Wood | | Whig | Charles Wood | | Whig | President of the Board of Control [16 2] |
| Wolverhampton | 4 January 1853 [16 1] | Charles Pelham Villiers | | Whig | Charles Pelham Villiers | | Whig | Judge Advocate General [16 2] |
| Marlborough | 4 January 1853 [16 1] | Lord Ernest Bruce | | Peelite | Lord Ernest Bruce | | Peelite | Vice-Chamberlain of the Household [16 2] |
| Leith Burghs | 4 January 1853 [16 1] | James Moncreiff | | Whig | James Moncreiff | | Whig | Lord Advocate [16 2] |
| Gloucester | 4 January 1853 | Maurice Berkeley | | Whig | Maurice Berkeley | | Whig | Second Sea Lord [16 2] |
| Brighton | 4 January 1853 [16 1] | Lord Alfred Hervey | | Peelite | Lord Alfred Hervey | | Peelite | Junior Lord of the Treasury [16 2] |
| Tiverton | 3 January 1853 [16 1] | Henry John Temple | | Whig | Henry John Temple | | Whig | Home Secretary [16 2] |
| Carlisle | 3 January 1853 [16 1] | Matthew Talbot Baines | | Whig | Matthew Talbot Baines | | Whig | President of the Poor Law Board [16 2] |
| City of London | 3 January 1853 [16 1] | Lord John Russell | | Whig | Lord John Russell | | Whig | Foreign Secretary [16 2] |
| Scarborough | 1 January 1853 [16 1] | George Phipps | | Whig | George Phipps | | Whig | Treasurer of the Household [16 2] |
| Nottingham | 1 January 1853 [16 1] | Edward Strutt | | Whig | Edward Strutt | | Whig | Chancellor of the Duchy of Lancaster [16 2] |
| Hertford | 1 January 1853 [16 1] | William Cowper | | Whig | William Cowper | | Whig | Civil Lord of the Admiralty [16 2] |
| Carlisle | 1 January 1853 [16 1] | Sir James Graham | | Peelite | Sir James Graham | | Peelite | First Lord of the Admiralty [16 2] |
| Southwark | 1 January 1853 [16 1] | Sir William Molesworth | | Radical | Sir William Molesworth | | Radical | First Commissioner of Works [16 2] |
15th Parliament (1847–1852) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| Dungannon | 24 March 1852 [15 1] | William Knox | | Conservative | William Knox | | Conservative | Parliamentary Groom in Waiting [15 2] |
| South Shropshire | 23 March 1852 [15 1] | Orlando Bridgeman | | Conservative | Orlando Bridgeman | | Conservative | Vice-Chamberlain of the Household [15 2] |
| East Retford | 19 March 1852 [15 1] | George Monckton-Arundell | | Conservative | George Monckton-Arundell | | Conservative | Lord-in-waiting [15 2] |
| County Londonderry | 13 March 1852 [15 1] | Thomas Bateson | | Conservative | Thomas Bateson | | Conservative | Junior Lord of the Treasury [15 2] |
| North Lincolnshire | 13 March 1852 [15 1] | Robert Christopher | | Conservative | Robert Christopher | | Conservative | Resignation pending appointment as Chancellor of the Duchy of Lancaster |
| Kildare | 13 March 1852 [15 1] [15 3] | Richard Bourke | | Conservative | William H. F. Cogan | | Whig | Chief Secretary for Ireland [15 2] |
| Tyrone | 12 March 1852 [15 1] | Lord Claud Hamilton | | Conservative | Lord Claud Hamilton | | Conservative | Treasurer of the Household [15 2] |
| South Lincolnshire | 12 March 1852 [15 1] | Sir John Trollope | | Conservative | Sir John Trollope | | Conservative | President of the Poor Law Board [15 2] |
| Buckinghamshire | 12 March 1852 [15 1] | Benjamin Disraeli | | Conservative | Benjamin Disraeli | | Conservative | Chancellor of the Exchequer [15 2] |
| Oxfordshire | 10 March 1852 [15 1] | J. W. Henley | | Conservative | J. W. Henley | | Conservative | President of the Board of Trade [15 2] |
| East Riding of Yorkshire | 9 March 1852 [15 1] | Arthur Duncombe | | Conservative | Arthur Duncombe | | Conservative | Fourth Naval Lord [15 2] |
| North Essex | 9 March 1852 [15 1] | William Beresford | | Conservative | William Beresford | | Conservative | Secretary at War [15 2] |
| Enniskillen | 9 March 1852 | James Whiteside | | Conservative | James Whiteside | | Conservative | Solicitor-General for Ireland [15 2] |
| Dublin University | 9 March 1852 [15 1] | Joseph Napier | | Conservative | Joseph Napier | | Conservative | Attorney-General for Ireland [15 2] |
| Dorset | 9 March 1852 [15 1] | George Bankes | | Conservative | George Bankes | | Conservative | Judge Advocate General [15 2] |
| Portarlington | 8 March 1852 [15 1] | Francis Plunkett Dunne | | Conservative | Francis Plunkett Dunne | | Conservative | Clerk of the Ordnance [15 2] |
| Stamford | 6 March 1852 [15 1] | John Charles Herries | | Conservative | John Charles Herries | | Conservative | President of the Board of Control [15 2] |
| Midhurst | 5 March 1852 [15 1] | Spencer Horatio Walpole | | Conservative | Spencer Horatio Walpole | | Conservative | Home Secretary [15 2] |
| Buckingham | 5 March 1852 [15 1] | Marquess of Chandos | | Conservative | Marquess of Chandos | | Conservative | Junior Lord of the Treasury [15 2] |
| Abingdon | 5 March 1852 [15 1] | Sir Frederic Thesiger | | Conservative | Sir Frederic Thesiger | | Conservative | Attorney General for England and Wales [15 2] |
| Droitwich | 4 March 1852 [15 1] | Sir John Pakington | | Conservative | Sir John Pakington | | Conservative | Secretary of State for War and the Colonies [15 2] |
| Colchester | 4 March 1852 [15 1] | Lord John Manners | | Conservative | Lord John Manners | | Conservative | First Commissioner of Works [15 2] |
| Chichester | 4 March 1852 [15 1] | Lord Henry Lennox | | Conservative | Lord Henry Lennox | | Conservative | Junior Lord of the Treasury [15 2] |
| Wenlock | 3 March 1852 [15 1] | George Weld-Forester | | Conservative | George Weld-Forester | | Conservative | Comptroller of the Household [15 2] |
| Northampton | 11 February 1852 | Robert Vernon Smith | | Whig | Robert Vernon Smith | | Whig | Secretary at War [15 2] |
| Perth | 9 February 1852 [15 1] | Fox Maule | | Whig | Fox Maule | | Whig | President of the Board of Control [15 2] |
| Scarborough | 19 July 1851 | George Phipps | | Whig | George Frederick Young | | Conservative | Comptroller of the Household [15 2] |
| Oxford | 3 April 1851 [15 1] | William Wood | | Whig | William Wood | | Whig | Solicitor General for England and Wales [15 2] |
| Southampton | 2 April 1851 [15 1] | Alexander Cockburn | | Whig | Alexander Cockburn | | Whig | Attorney General for England and Wales [15 2] |
| Devonport | 2 April 1851 [15 1] | John Romilly | | Whig | John Romilly | | Whig | Master of the Rolls [15 2] |
| Windsor | 10 February 1851 [15 1] | John Hatchell | | Whig | John Hatchell | | Whig | Attorney-General for Ireland [15 2] |
| Southampton | 17 July 1850 [15 1] | Alexander Cockburn | | Whig | Alexander Cockburn | | Whig | Solicitor General for England and Wales [15 2] |
| Devonport | 17 July 1850 [15 1] | Sir John Romilly | | Whig | Sir John Romilly | | Whig | Attorney General for England and Wales [15 2] |
| Totnes | 30 March 1850 [15 1] | Lord Seymour | | Whig | Lord Seymour | | Whig | First Commissioner of Woods and Forests [15 2] |
| Sutherland | 5 June 1849 [15 1] | Sir David Dundas | | Whig | Sir David Dundas | | Whig | Judge Advocate General [15 2] |
| Kingston upon Hull | 7 February 1849 [15 1] | Matthew Talbot Baines | | Whig | Matthew Talbot Baines | | Whig | President of the Poor Law Board [15 2] |
| Portsmouth | 6 February 1849 [15 1] | Francis Baring | | Whig | Francis Baring | | Whig | First Lord of the Admiralty [15 2] |
| Devonport | 3 April 1848 [15 1] | John Romilly | | Whig | John Romilly | | Whig | Solicitor General for England and Wales [15 2] |
| Wells | 27 December 1847 [15 1] | William Hayter | | Whig | William Hayter | | Whig | Judge Advocate General [15 2] |
| Calne | 27 December 1847 [15 1] | Henry Petty-Fitzmaurice | | Whig | Henry Petty-Fitzmaurice | | Whig | Junior Lord of the Treasury [15 2] |
| Newcastle-under-Lyme | 15 December 1847 | Samuel Christy | | Conservative | Samuel Christy | | Conservative | Seeks re-election due to his firm holding a government contract |
| Edinburgh | 15 December 1847 [15 1] | Charles Cowan | | Whig | Charles Cowan | | Whig | Disqualification (held government contract) |
| Liskeard | 14 December 1847 [15 1] | Charles Buller | | Whig | Charles Buller | | Whig | President of the Poor Law Board [15 2] |
14th Parliament (1841–1847) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| Derby | 4 September 1846 | Edward Strutt | | Whig | Edward Strutt | | Whig | Resignation pending appointment as President of the Railway Commission |
| St. Albans | 11 August 1846 | William Hare | | Whig | Benjamin Bond Cabbell | | Conservative | Lord-in-waiting [14 1] |
| Chester | 8 August 1846 [14 2] | Lord Robert Grosvenor | | Whig | Lord Robert Grosvenor | | Whig | Treasurer of the Household [14 1] |
| Sutherland | 28 July 1846 [14 2] | David Dundas | | Whig | David Dundas | | Whig | Solicitor General for England and Wales [14 1] |
| Roscommon | 21 July 1846 [14 2] | Denis O'Conor | | Irish Repeal | Denis O'Conor | | Whig | Junior Lord of the Treasury [14 1] |
| West Riding of Yorkshire | 18 July 1846 [14 2] | George Howard | | Whig | George Howard | | Whig | First Commissioner of Woods and Forests [14 1] |
| South Staffordshire | 17 July 1846 [14 2] | George Anson | | Whig | George Anson | | Whig | Clerk of the Ordnance [14 1] |
| Kirkcudbrightshire | 17 July 1846 [14 2] | Thomas Maitland | | Whig | Thomas Maitland | | Whig | Solicitor General for Scotland [14 1] |
| Liskeard | 15 July 1846 [14 2] | Charles Buller | | Whig | Charles Buller | | Whig | Judge Advocate General [14 1] |
| Lichfield | 15 July 1846 [14 2] | Lord Alfred Paget | | Whig | Lord Alfred Paget | | Whig | Chief Equerry and Clerk Marshal [14 1] |
| Edinburgh | 15 July 1846 | Thomas Babington Macaulay | | Whig | Thomas Babington Macaulay | | Whig | Paymaster General [14 1] |
| Richmond | 13 July 1846 [14 2] | Henry Rich | | Whig | Henry Rich | | Whig | Junior Lord of the Treasury [14 1] |
| Manchester | 13 July 1846 [14 2] | Thomas Milner Gibson | | Whig | Thomas Milner Gibson | | Whig | Vice-President of the Board of Trade [14 1] |
| Greenwich | 13 July 1846 [14 2] | James Whitley Deans Dundas | | Whig | James Whitley Deans Dundas | | Whig | Second Naval Lord [14 1] |
| Edinburgh | 13 July 1846 [14 2] | William Gibson-Craig | | Whig | William Gibson-Craig | | Whig | Junior Lord of the Treasury [14 1] |
| Tower Hamlets | 11 July 1846 [14 2] | Charles Richard Fox | | Whig | Charles Richard Fox | | Whig | Surveyor-General of the Ordnance [14 1] |
| Plymouth | 11 July 1846 | Hugh Fortescue | | Whig | Hugh Fortescue | | Whig | Junior Lord of the Treasury [14 1] |
| Perth | 11 July 1846 [14 2] | Fox Maule | | Whig | Fox Maule | | Whig | Secretary at War [14 1] |
| Hertford | 11 July 1846 [14 2] | William Cowper | | Whig | William Cowper | | Whig | Civil Lord of the Admiralty [14 1] |
| Gloucester | 11 July 1846 [14 2] | Maurice Berkeley | | Whig | Maurice Berkeley | | Whig | Third Naval Lord [14 1] |
| Evesham | 11 July 1846 [14 2] | Marcus Sandys | | Whig | Marcus Sandys | | Whig | Comptroller of the Household [14 1] |
| Chester | 11 July 1846 [14 2] | John Jervis | | Whig | John Jervis | | Whig | Solicitor General for England and Wales [14 1] |
| Tiverton | 10 July 1846 [14 2] | Henry John Temple | | Whig | Henry John Temple | | Whig | Foreign Secretary [14 1] |
| Taunton | 10 July 1846 [14 2] | Henry Labouchere | | Whig | Henry Labouchere | | Whig | Resignation pending appointment as Chief Secretary for Ireland |
| Dungarvan | 10 July 1846 [14 2] | Richard Lalor Sheil | | Whig | Richard Lalor Sheil | | Whig | Master of the Mint [14 1] |
| Devonport | 10 July 1846 [14 2] | Sir George Grey | | Whig | Sir George Grey | | Whig | Home Secretary [14 1] |
| Leith Burghs | 9 July 1846 [14 2] | Andrew Rutherfurd | | Whig | Andrew Rutherfurd | | Whig | Lord Advocate [14 1] |
| Halifax | 9 July 1846 [14 2] | Charles Wood | | Whig | Charles Wood | | Whig | Chancellor of the Exchequer [14 1] |
| Worcester | 8 July 1846 [14 2] | Thomas Wilde | | Whig | Denis Le Marchant | | Whig | Attorney General for England and Wales [14 1] |
| Nottingham | 8 July 1846 [14 2] | John Hobhouse | | Whig | John Hobhouse | | Whig | President of the Board of Control [14 1] |
| City of London | 8 July 1846 [14 2] | Lord John Russell | | Whig | Lord John Russell | | Whig | Prime Minister and First Lord of the Treasury [14 1] |
| Windsor | 14 March 1846 [14 2] | Ralph Neville | | Conservative | Ralph Neville | | Conservative | Junior Lord of the Treasury [14 1] |
| Stafford | 13 March 1846 | Swynfen Carnegie | | Conservative | Swynfen Carnegie | | Conservative | Junior Lord of the Treasury [14 1] |
| South Nottinghamshire | 27 February 1846 | Henry Pelham-Clinton | | Conservative | Thomas Thoroton-Hildyard | | Conservative | Chief Secretary for Ireland [14 1] |
|
| Westminster | 19 February 1846 | Henry John Rous | | Conservative | De Lacy Evans | | Whig | Fourth Naval Lord [14 1] |
| Buteshire | 7 February 1846 [14 2] | James Stuart-Wortley | | Conservative | James Stuart-Wortley | | Conservative | Judge Advocate General [14 1] |
| Newark | 29 January 1846 [14 2] [14 3] | William Ewart Gladstone | | Conservative | John Stuart | | Conservative | Secretary of State for War and the Colonies [14 1] |
| Cirencester | 14 August 1845 [14 2] | William Cripps | | Conservative | William Cripps | | Conservative | Junior Lord of the Treasury [14 1] |
| Warwick | 13 August 1845 [14 2] | Charles Eurwicke Douglas | | Conservative | Charles Eurwicke Douglas | | Conservative | Commissioner of Greenwich Hospital [14 1] |
| Chichester | 12 August 1845 [14 2] | Lord Arthur Lennox | | Conservative | Lord Arthur Lennox | | Conservative | Clerk of the Ordnance [14 1] |
| Cambridge | 16 July 1845 | Fitzroy Kelly | | Conservative | Fitzroy Kelly | | Conservative | Solicitor General for England and Wales [14 1] |
| Abingdon | 9 July 1845 | Frederic Thesiger | | Conservative | Frederic Thesiger | | Conservative | Attorney General for England and Wales [14 1] |
| Denbighshire | 7 May 1845 [14 2] | Sir Watkin Williams-Wynn | | Conservative | Sir Watkin Williams-Wynn | | Conservative | Steward of Bromfield and Yale [14 1] |
| Peeblesshire | 5 May 1845 [14 2] | William Forbes Mackenzie | | Conservative | William Forbes Mackenzie | | Conservative | Junior Lord of the Treasury [14 1] |
| Thetford | 24 February 1845 [14 2] | Bingham Baring | | Conservative | Bingham Baring | | Conservative | Paymaster General [14 1] |
| Lewes | 17 February 1845 [14 2] | Henry Fitzroy | | Conservative | Henry Fitzroy | | Conservative | Civil Lord of the Admiralty [14 1] |
| South Wiltshire | 15 February 1845 [14 2] | Sidney Herbert | | Conservative | Sidney Herbert | | Conservative | Secretary at War [14 1] |
| Stamford | 10 February 1845 [14 2] | Sir George Clerk | | Conservative | Sir George Clerk | | Conservative | Vice-President of the Board of Trade and Master of the Mint [14 1] |
| Buckingham | 10 February 1845 [14 2] | Thomas Fremantle | | Conservative | Thomas Fremantle | | Conservative | Chief Secretary for Ireland [14 1] |
| Chichester | 27 May 1844 [14 2] | Lord Arthur Lennox | | Conservative | Lord Arthur Lennox | | Conservative | Junior Lord of the Treasury [14 1] |
| Buckingham | 25 May 1844 [14 2] | Sir Thomas Fremantle | | Conservative | Sir Thomas Fremantle | | Conservative | Secretary at War [14 1] |
| Woodstock | 22 April 1844 [14 2] | Frederic Thesiger [14 4] | | Conservative | John Spencer-Churchill | | Conservative | Solicitor General for England and Wales [14 1] |
| Exeter | 20 April 1844 | William Webb Follett | | Conservative | William Webb Follett | | Conservative | Attorney General for England and Wales [14 1] |
| Bandon | 14 February 1842 [14 2] | Joseph Devonsher Jackson [14 5] | | Conservative | Francis Bernard | | Conservative | Solicitor-General for Ireland [14 1] |
| Linlithgowshire | 20 October 1841 [14 2] | Charles Hope | | Conservative | Charles Hope | | Conservative | Commissioner of Greenwich Hospital [14 1] |
| East Retford | 2 October 1841 [14 2] | Arthur Duncombe | | Conservative | Arthur Duncombe | | Conservative | Groom in Waiting in Ordinary [14 1] |
| Cavan | 30 September 1841 [14 2] | John Young | | Conservative | John Young | | Conservative | Junior Lord of the Treasury [14 1] |
| County Sligo | 28 September 1841 [14 2] | Alexander Perceval | | Conservative | John Ffolliott | | Conservative | Junior Lord of the Treasury [14 1] [14 6] |
| Portarlington | 27 September 1841 [14 2] | George Dawson-Damer | | Conservative | George Dawson-Damer | | Conservative | Comptroller of the Household [14 1] |
| Monmouthshire | 24 September 1841 [14 2] | Lord Granville Somerset | | Conservative | Lord Granville Somerset | | Conservative | Chancellor of the Duchy of Lancaster [14 1] |
| Tyrone | 23 September 1841 [14 2] | Henry Lowry-Corry | | Conservative | Henry Lowry-Corry | | Conservative | Civil Lord of the Admiralty [14 1] |
| Buteshire | 23 September 1841 [14 2] | William Rae | | Conservative | William Rae | | Conservative | Lord Advocate [14 1] |
| East Cornwall | 22 September 1841 [14 2] | Lord Eliot | | Conservative | Lord Eliot | | Conservative | Chief Secretary for Ireland [14 1] |
| Selkirkshire | 21 September 1841 [14 2] | Alexander Pringle | | Conservative | Alexander Pringle | | Conservative | Junior Lord of the Treasury [14 1] |
| North Lancashire | 21 September 1841 [14 2] | Lord Stanley | | Conservative | Lord Stanley | | Conservative | Secretary of State for War and the Colonies [14 1] |
| Aberdeenshire | 21 September 1841 [14 2] | William Gordon | | Conservative | William Gordon | | Conservative | Fourth Naval Lord [14 1] |
| South Nottinghamshire | 20 September 1841 [14 2] | Henry Pelham-Clinton | | Conservative | Henry Pelham-Clinton | | Conservative | First Commissioner of Woods and Forests [14 1] |
| Lisburn | 20 September 1841 [14 2] | Henry Meynell | | Conservative | Henry Meynell | | Conservative | Parliamentary Groom in Waiting [14 1] |
| East Kent | 20 September 1841 [14 2] | Sir Edward Knatchbull | | Conservative | Sir Edward Knatchbull | | Conservative | Paymaster General [14 1] |
| Cardiff Boroughs | 17 September 1841 [14 2] | John Iltyd Nicholl | | Conservative | John Iltyd Nicholl | | Conservative | Judge Advocate General [14 1] |
| Launceston | 15 September 1841 [14 2] | Henry Hardinge | | Conservative | Henry Hardinge | | Conservative | Secretary at War [14 1] |
| Cambridge University | 15 September 1841 [14 2] | Henry Goulburn | | Conservative | Henry Goulburn | | Conservative | Chancellor of the Exchequer [14 1] |
| Wenlock | 14 September 1841 [14 2] | James Milnes Gaskell | | Conservative | James Milnes Gaskell | | Conservative | Junior Lord of the Treasury [14 1] |
| Newark | 14 September 1841 [14 2] | William Ewart Gladstone | | Conservative | William Ewart Gladstone | | Conservative | Vice-President of the Board of Trade and Master of the Mint [14 1] |
| Marlborough | 14 September 1841 [14 2] | Henry Bingham Baring | | Conservative | Henry Bingham Baring | | Conservative | Junior Lord of the Treasury [14 1] |
| Lord Ernest Bruce | | Conservative | Lord Ernest Bruce | | Conservative | Vice-Chamberlain of the Household [14 1] |
| Huntingdon | 14 September 1841 [14 2] | Jonathan Peel | | Conservative | Jonathan Peel | | Conservative | Surveyor-General of the Ordnance [14 1] |
| Frederick Pollock | | Conservative | Frederick Pollock | | Conservative | Attorney General for England and Wales [14 1] |
| Chippenham | 14 September 1841 [14 2] | Henry George Boldero | | Conservative | Henry George Boldero | | Conservative | Clerk of the Ordnance [14 1] |
| Bury St. Edmunds | 14 September 1841 [14 2] | Earl of Jermyn | | Conservative | Earl of Jermyn | | Conservative | Treasurer of the Household [14 1] |
| Tamworth | 13 September 1841 [14 2] | Robert Peel | | Conservative | Robert Peel | | Conservative | Prime Minister and First Lord of the Treasury [14 1] |
| Exeter | 13 September 1841 [14 2] | William Webb Follett | | Conservative | William Webb Follett | | Conservative | Solicitor General for England and Wales [14 1] |
| Dorchester | 13 September 1841 [14 2] | Sir James Graham | | Conservative | Sir James Graham | | Conservative | Home Secretary [14 1] |
13th Parliament (1837–1841) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| Clonmel | 21 August 1840 [13 1] | David Richard Pigot | | Whig | David Richard Pigot | | Whig | Attorney-General for Ireland [13 2] |
| Cockermouth | 1 June 1840 | Edward Horsman | | Whig | Edward Horsman | | Whig | Junior Lord of the Treasury [13 2] |
| Newark-on-Trent | 25 January 1840 | Thomas Wilde | | Whig | Thomas Wilde | | Whig | Solicitor General for England and Wales [13 2] |
| Edinburgh | 23 January 1840 [13 1] | Thomas Babington Macaulay | | Whig | Thomas Babington Macaulay | | Whig | Secretary at War [13 2] |
| Tipperary | 16 September 1839 [13 1] | Richard Lalor Sheil | | Whig | Richard Lalor Sheil | | Whig | Vice-President of the Board of Trade [13 2] |
| Waterford City | 6 September 1839 [13 1] | Thomas Wyse | | Whig | Thomas Wyse | | Whig | Junior Lord of the Treasury [13 2] |
| Portsmouth | 30 August 1839 [13 1] | Francis Baring | | Whig | Francis Baring | | Whig | Chancellor of the Exchequer [13 2] |
| Hertford | 20 May 1839 | William Cowper | | Whig | William Cowper | | Whig | Commissioner of Greenwich Hospital [13 2] |
| Southwark | 27 February 1839 [13 1] | Daniel Whittle Harvey | | Whig | Daniel Whittle Harvey | | Whig | Registrar of the Metropolitan Public Carriages [13 2] |
| Devonport | 20 February 1839 [13 1] | Sir George Grey | | Whig | Sir George Grey | | Whig | Judge Advocate General [13 2] |
| Tower Hamlets | 11 February 1839 [13 1] | Stephen Lushington | | Whig | Stephen Lushington | | Whig | Judge of the High Court of Admiralty [13 2] |
| Clonmel | 16 July 1838 [13 1] | Nicholas Ball | | Whig | Nicholas Ball | | Whig | Attorney-General for Ireland [13 2] |
| Devizes | 26 March 1838 | James Whitley Deans Dundas | | Whig | James Whitley Deans Dundas | | Whig | Clerk of the Ordnance [13 2] |
| James Whitley Deans Dundas | | Whig | George Heneage Walker Heneage | | Conservative | By-Election result reversed on petition |
| Tipperary | 27 February 1838 | Richard Lalor Sheil | | Whig | Richard Lalor Sheil | | Whig | Commissioner of Greenwich Hospital [13 2] |
| Galway Borough | 12 February 1838 | Andrew Henry Lynch | | Whig | Andrew Henry Lynch | | Whig | Master in Chancery [13 2] |
12th Parliament (1835–1837) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| Cashel | 10 February 1837 [12 1] | Stephen Woulfe | | Whig | Stephen Woulfe | | Whig | Solicitor-General for Ireland [12 2] |
| Sheffield | 22 August 1836 | John Parker | | Whig | John Parker | | Whig | Junior Lord of the Treasury [12 2] |
| Dungarvan | 21 September 1835 | Michael O'Loghlen | | Whig | Michael O'Loghlen | | Whig | Attorney-General for Ireland [12 2] |
| Bury St Edmunds | 26 June 1835 [12 1] | Lord Charles FitzRoy | | Whig | Lord Charles FitzRoy | | Whig | Vice-Chamberlain of the Household [12 2] |
| Kildare | 26 May 1835 [12 1] | Richard More O'Ferrall | | Whig | Richard More O'Ferrall | | Whig | Junior Lord of the Treasury [12 2] |
| Malton | 19 May 1835 [12 1] | Charles Pepys | | Whig | Charles Pepys | | Whig | First Commissioner of the Great Seal [12 2] |
| Leith Burghs | 8 May 1835 | John Murray | | Whig | John Murray | | Whig | Lord Advocate [12 2] |
| South Devon | 7 May 1835 | Lord John Russell | | Whig | Montague Parker | | Conservative | Home Secretary [12 2] |
| West Riding of Yorkshire | 6 May 1835 | George Howard | | Whig | George Howard | | Whig | Resignation pending appointment as Chief Secretary for Ireland |
| Dundee | 6 May 1835 [12 1] | Sir Henry Parnell | | Whig | Sir Henry Parnell | | Whig | Treasurer of the Navy, Treasurer of the Ordnance and Paymaster of the Forces [12 2] |
| Stirling Burghs | 5 May 1835 [12 1] | Archibald Primrose | | Whig | Archibald Primrose | | Whig | Civil Lord of the Admiralty [12 2] |
| Dungarvan | 4 May 1835 | Michael O'Loghlen | | Whig | Michael O'Loghlen | | Whig | Solicitor-General for Ireland [12 2] |
| Clackmannanshire and Kinross-shire | 4 May 1835 [12 1] | Charles Adam | | Whig | Charles Adam | | Whig | First Naval Lord [12 2] |
| Kirkcudbrightshire | 2 May 1835 [12 1] | Robert Cutlar Fergusson | | Whig | Robert Cutlar Fergusson | | Whig | Judge Advocate General [12 2] |
| Haddington Burghs | 2 May 1835 [12 1] | Robert Steuart | | Whig | Robert Steuart | | Whig | Junior Lord of the Treasury [12 2] |
| Elgin Burghs | 2 May 1835 [12 1] | Andrew Leith Hay | | Whig | Andrew Leith Hay | | Whig | Clerk of the Ordnance [12 2] |
| North Northumberland | 1 May 1835 [12 1] | Henry Grey | | Whig | Henry Grey | | Whig | Secretary at War [12 2] |
| Manchester | 30 April 1835 [12 1] | Charles Poulett Thomson | | Whig | Charles Poulett Thomson | | Whig | President of the Board of Trade [12 2] |
| Edinburgh | 30 April 1835 [12 1] | John Campbell | | Whig | John Campbell | | Whig | Attorney General for England and Wales [12 2] |
| Taunton | 29 April 1835 | Henry Labouchere | | Whig | Henry Labouchere | | Whig | Vice-President of the Board of Trade and Master of the Mint [12 2] |
| Penryn and Falmouth | 28 April 1835 | Robert Rolfe | | Whig | Robert Rolfe | | Whig | Solicitor General for England and Wales [12 2] |
| Cashel | 28 April 1835 [12 1] | Louis Perrin | | Whig | Louis Perrin | | Whig | Attorney-General for Ireland [12 2] |
| Sandwich | 27 April 1835 [12 1] | Sir Edward Troubridge | | Whig | Sir Edward Troubridge | | Whig | Fourth Naval Lord [12 2] |
| Newport (I.O.W.) | 27 April 1835 [12 1] | William Ord | | Whig | William Ord | | Whig | Junior Lord of the Treasury [12 2] |
| Cambridge | 27 April 1835 [12 1] | Thomas Spring Rice | | Whig | Thomas Spring Rice | | Whig | Chancellor of the Exchequer [12 2] |
| Berwick-upon-Tweed | 27 April 1835 [12 1] | Rufane Shaw Donkin | | Whig | Rufane Shaw Donkin | | Whig | Surveyor-General of the Ordnance [12 2] |
| Totnes | 24 April 1835 [12 1] | Lord Seymour | | Whig | Lord Seymour | | Whig | Junior Lord of the Treasury [12 2] |
| Nottingham | 24 April 1835 [12 1] | Sir John Hobhouse | | Whig | Sir John Hobhouse | | Whig | President of the Board of Control [12 2] |
| Cardiff Boroughs | 20 March 1835 [12 1] | John Iltyd Nicholl | | Conservative | John Iltyd Nicholl | | Conservative | Junior Lord of the Treasury [12 2] |
11th Parliament (1832–1834) |
| By-election | Date | Former incumbent | Party | Winner | Party | Position |
|---|
| Kirkcudbrightshire | 3 July 1834 [11 1] | Robert Cutlar Fergusson | | Whig | Robert Cutlar Fergusson | | Whig | Judge Advocate General [11 2] |
| Elgin Burghs | 30 June 1834 [11 1] | Andrew Leith Hay | | Whig | Andrew Leith Hay | | Whig | Clerk of the Ordnance [11 2] |
| Edinburgh | 23 June 1834 [11 1] | James Abercromby | | Whig | James Abercromby | | Whig | Master of the Mint [11 2] |
| Cambridge | 13 June 1834 | Thomas Spring Rice | | Whig | Thomas Spring Rice | | Whig | Secretary of State for War and the Colonies [11 2] |
| Leith Burghs | 2 June 1834 | John Murray | | Whig | John Murray | | Whig | Lord Advocate [11 2] |
| Malton | 4 March 1834 [11 1] | Charles Pepys | | Whig | Charles Pepys | | Whig | Solicitor General for England and Wales [11 2] |
|
| Dudley | 28 February 1834 | John Campbell | | Whig | Thomas Hawkes | | Tory | Attorney General for England and Wales [11 2] |
| South Staffordshire | 7 June 1833 | Edward Littleton | | Whig | Edward Littleton | | Whig | Chief Secretary for Ireland [11 2] |
| North Lancashire | 12 April 1833 [11 1] | Edward Stanley | | Whig | Edward Stanley | | Whig | Secretary of State for War and the Colonies [11 2] |
| Coventry | 12 April 1833 | Edward Ellice | | Whig | Edward Ellice | | Whig | Secretary at War [11 2] |
| Gloucester | 9 April 1833 | Maurice Berkeley | | Whig | Henry Thomas Hope | | Tory | Fourth Naval Lord [11 2] |
| Westminster | 4 April 1833 [11 1] | Sir John Hobhouse | | Whig | Sir John Hobhouse | | Whig | Chief Secretary for Ireland [11 2] |
|