| Date | Constituency | c/u | Former incumbent | Winner | Cause |
|---|
| 17 July 1807 | Launceston | u | Earl Percy | Richard Henry Alexander Bennet | Chose to sit for Northumberland |
| 20 July 1807 | Dorchester | u | Cropley Ashley Cooper | Cropley Ashley Cooper | Clerk of the Ordnance |
| 20 July 1807 | Grantham | u | Thomas Thoroton | Thomas Thoroton | Clerk of the Deliveries of the Ordnance |
| 20 July 1807 | Tavistock | u | Richard Fitzpatrick | Viscount Howick | Chose to sit for Bedfordshire |
| 20 July 1807 | Wendover | u | Viscount Mahon | Francis Horner | Chose to sit for Kingston-upon-Hull |
| 20 July 1807 | Westbury | u | Edward Lascelles | Henry Lascelles | Chose to sit for Northallerton |
| 21 July 1807 | Cockermouth | u | James Lowther | John Osborn | Chose to sit for Cumberland |
| 21 July 1807 | Rye | u | Sir John Nicholl | Sir William Elford | Chose to sit for Great Bedwyn |
| The Earl of Clancarty | Stephen Rumbold Lushington | Resignation (Joint Postmaster General in Ireland) |
| 22 July 1807 | Midhurst | u* | Samuel Smith | Thomas Thompson | Chose to sit for Leicester |
| 22 July 1807 | St Mawes | u | William Shipley | Viscount Ebrington | Chose to sit for the Flint Boroughs |
| 24 July 1807 | Mitchell | u | Edward Leveson Gower | Sir James Hall | Resignation |
| 27 July 1807 | Orford | u | Lord Robert Seymour | William Sloane | Chose to sit for Carmarthenshire |
| 27 July 1807 | Tralee | u | Sir Arthur Wellesley | Evan Foulkes | Chose to sit for Newport I.o.W. |
| 27 July 1807 | Winchelsea | u | Sir Frederick Fletcher Vane | Sir Oswald Mosley | Resignation |
| 28 July 1807 | Youghal | u* | Viscount Boyle | Sir John Keane | Succession to a peerage |
| 29 July 1807 | Helston | u | Richard Richards | The Lord Dufferin and Claneboye | Resignation |
| 30 July 1807 | Appleby | u | Viscount Howick | Nicholas William Ridley Colborne | Resignation to contest Tavistock |
| 31 July 1807 | Athlone | u | Henry Wellesley | John Frewen Turner | Chose to sit for Eye |
| 3 August 1807 | Bandon Bridge | u | Viscount Boyle | George Tierney | Succession to a peerage |
| 4 August 1807 | Dundalk | u | Josias Porcher | Patrick Crawford Bruce | Chose to sit for Old Sarum |
| 14 August 1807 | Yarmouth | u | William Powlett Orde Powlett | Sir John Orde | Succession to a peerage |
| 17 August 1807 | Kinross-shire | u | William Adam | David Clephane | Chose to sit for Kincardineshire |
| 21 August 1807 | Heytesbury | u | Viscount FitzHarris | Viscount FitzHarris | Governor of the Isle of Wight |
| 18 November 1807 | County Monaghan | u | Richard Dawson | Thomas Charles Stewart Corry | Death |
| 10 December 1807 | Beaumaris | u | The Lord Newborough | Sir Edward Pryce Lloyd | Death |
| 13 January 1808 | Lincoln | c | William Monson | The Earl of Mexborough | Death |
| 19 January 1808 | Tavistock | u | Viscount Howick | George Ponsonby | Succeeded to a peerage |
| 27 January 1808 | Clitheroe | u | John Cust | James Gordon | Succeeded to a peerage |
| 28 January 1808 | Whitchurch | u* | William Brodrick | William Brodrick | Junior Lord of the Treasury |
| 29 January 1808 | Castle Rising | u* | Charles Bagot | Fulk Greville Howard | Resignation |
| 29 January 1808 | Tiverton | u* | Richard Ryder | Richard Ryder | Junior Lord of the Treasury |
| 30 January 1808 | Stamford | u* | John Leland | Evan Foulkes | Death |
| 30 January 1808 | Tregony | u | Geoffrey Wentworth Wentworth | William Gore Langton | Resignation |
| 30 January 1808 | Yarmouth | u | Jervoise Clarke Jervoise | Benjamin Cooke Griffinhoofe | Death |
| 1 February 1808 | Mitchell | u | George Galway Mills | Charles Trelawny-Brereton | Resignation |
| 2 February 1808 | Bath | u* | John Palmer | Charles Palmer | Resignation |
| 2 February 1808 | Wootton Bassett | u | John Cheesment Severn | Benjamin Walsh | Resignation |
| 4 February 1808 | County Donegal | c | Henry Vaughan Brooke | Henry Conyngham Montgomery | Death |
| 16 February 1808 | Banbury | c | William Praed | Dudley Long North | Election voided due to double return |
| Dudley Long North |
| 22 February 1808 | Orford | u | Lord Henry Moore | Lord Henry Moore | Joint Muster Master General of the Forces in Ireland |
| 23 February 1808 | Newtown | u* | Dudley Long North | George Anderson-Pelham | Resignation to contest Banbury |
| 24 February 1808 | Poole | c | Vacant | Sir Richard Bickerton | No return made due to tie |
| 25 February 1808 | Ennis | u | James Fitzgerald | William Fitzgerald | Resignation |
| 25 February 1808 | Tralee | u | Evan Foulkes | James Stephen | Resignation to contest Stamford |
| 27 February 1808 | County Westmeath | u* | William Smyth | Hercules Robert Pakenham | Resignation |
| 29 February 1808 | Boroughbridge | u* | Henry Dawkins | Henry Clinton | Resignation |
| 5 March 1808 | Truro | u | Edward Boscawen | Charles Frederick Powlett Townshend | Succeeded to a peerage |
| 17 March 1808 | Grampound | c | Andrew Cochrane-Johnstone | Robert Williams | Void Election |
| c | Robert Williams | William Holmes | By-election result reversed on petition |
| c | George Augustus Frederick Cochrane | John Teed | Void Election |
| c* | John Teed | George Augustus Frederick Cochrane | By-election result reversed on petition |
| 24 March 1808 | Malton | u | The Lord Headley | Bryan Cooke | Void Election |
| 20 April 1808 | Wareham | u | Granby Thomas Calcraft | Samuel Romilly | Resignation |
| 22 April 1808 | Sandwich | c | Peter Rainier | John Spratt Rainier | Death |
| 22 April 1808 | St Mawes | u | Scrope Bernard | Earl Gower | Resignation |
| 26 April 1808 | Yarmouth | u | Benjamin Cooke Griffinhoofe | John Delgarno | Resignation |
| 2 May 1808 | Sutherland | u | William Dundas | John Randoll Mackenzie | Resignation |
| 7 May 1808 | Tain Burghs | u | John Randoll Mackenzie | William Henry Fremantle | Resignation to contest Sutherland |
| 19 May 1808 | Rutland | u* | Gerard Noel Noel | Charles Noel Noel | Resignation |
| 28 May 1808 | Reigate | u* | Viscount Royston | James Cocks | Death |
| 13 June 1808 | Yarmouth | u | John Delgarno | Viscount Valentia | Resignation |
| 25 June 1808 | Great Yarmouth | u | Stephen Lushington | Giffin Wilson | Resignation |
| 11 July 1808 | Cockermouth | u* | John Osborn | Viscount Lowther | Resignation |
| 13 July 1808 | Richmond | u | Arthur Shakespeare | Lawrence Dundas | Resignation |
| 15 July 1808 | Rye | u | Sir William Elford | William Jacob | Resignation |
| 27 July 1808 | Dundalk | u | Patrick Craufurd Bruce | Thomas Hughan | Resignation |
| 9 August 1808 | County Clare | c* | Francis Nathaniel Burton | Augustine Fitzgerald | Resignation |
| 13 December 1808 | Bossiney | u* | The Lord Rendlesham | The Earl of Desart | Death |
| 19 December 1808 | Hampshire | c* | Sir Henry Paulet St. John Mildmay | Thomas Freeman Heathcote | Death |
| 25 January 1809 | Bletchingley | u | Thomas Freeman Heathcote | Charles Cockrell | Resignation to contest Hampshire |
| 25 January 1809 | St Albans | c | James Walter Grimston | Daniel Giles | Succeeded to a peerage |
| 27 January 1809 | Westbury | u | Glynn Wynn | Francis Whittle | Resignation |
| 4 February 1809 | Kilkenny City | u | Charles Harward Butler | Robert Williams | Resignation |
| 9 February 1809 | Pembroke Boroughs | u | Hugh Barlow | Sir Hugh Owen | Death |
| 14 February 1809 | Aylesbury | u* | George Henry Compton Cavendish | Thomas Hussey | Death |
| 14 February 1809 | Poole | c* | John Jeffery | Benjamin Lester Lester | Resignation (Consul General in Portugal) |
| 21 February 1809 | Mitchell | u* | Charles Trelawny Brereton | John Bruce | Resignation |
| 27 February 1809 | Stamford | c | Albemarle Bertie | Charles Chaplin | Resignation pending Elevation to the House of Lords having succeeded to a peerage |
| 27 February 1809 | Wigtown Burghs | u | Edward Richard Stewart | Lyndon Evelyn | Resignation (Victualling Commissioner) |
| 28 February 1809 | St Mawes | u* | Viscount Ebrington | Scrope Bernard | Resignation (Commission in the Army) |
| 8 March 1809 | Dungannon | u | Lord Claude Hamilton | Claude Scott | Death |
| 9 March 1809 | King's Lynn | u* | Lord Walpole | Lord Walpole | Succeeded to a peerage |
| 14 March 1809 | Peterborough | u | French Laurence | Marquess of Tavistock | Death |
| 3 April 1809 | Huntingdon | u* | William Meeke Farmer | Samuel Farmer | Resignation |
| 7 April 1809 | Newport | u* | Sir Arthur Wellesley | Leonard Worsley-Holmes | Resignation |
| 15 April 1809 | Cashel | u | Quintin Dick | Robert Peel | Resignation |
| 18 April 1809 | Eye | u | Henry Wellesley | Charles Arbuthnot | Resignation |
| 19 April 1809 | Saltash | u* | John Pedley | Michael George Prendergast | Resignation |
| 1 May 1809 | Edinburghshire | u | Robert Saunders Dundas | Robert Saunders Dundas | Chief Secretary for Ireland |
| 11 May 1809 | Ayr Burghs | u* | John Campbell | Duncan Campbell | Death |
| 26 June 1809 | Coleraine | u | Walter Jones | John Poo Beresford | Resignation |
| 30 June 1809 | Glasgow Burghs | c | Archibald Campbell | Alexander Houstoun | Resignation |
| 7 July 1809 | Staffordshire | u* | Lord Granville Leveson Gower | Lord Granville Leveson Gower | Secretary at War |
| 13 September 1809 | Pembroke Boroughs | u* | Sir Hugh Owen | John Owen | Death |
| 29 September 1809 | Sutherland | u | John Randoll Mackenzie | George Macpherson Grant | Death |
| 28 November 1809 | Ross-shire | c | Alexander Mackenzie Fraser | Hugh Innes | Death |
| 12 December 1809 | Abingdon | u | George Knapp | Henry Bowyer | Death |
| 3 January 1810 | Buckinghamshire | u* | Marquess of Titchfield | William Selby Lowndes | Succeeded to a peerage |
| 29 January 1810 | Dunwich | u | Snowdon Barne | Snowdon Barne | Junior Lord of the Treasury |
| 29 January 1810 | Newport | u | The Viscount Palmerston | The Viscount Palmerston | Secretary at War |
| 30 January 1810 | Buckingham | u | Thomas Grenville | Lord George Grenville | Resignation |
| 30 January 1810 | Malmesbury | u | Sir George Bowyer | Abel Smith | Resignation (Intended to stand for Abingdon) |
| 30 January 1810 | Tiverton | u* | Richard Ryder | Richard Ryder | Home Secretary |
| 31 January 1810 | Cockermouth | u* | Viscount Lowther | Viscount Lowther | Lord of the Admiralty |
| 31 January 1810 | Milborne Port | u | Lord Paget | Viscount Lewisham | Resignation |
| 1 February 1810 | Bossiney | u* | The Earl of Desart | The Earl of Desart | Junior Lord of the Treasury |
| 2 February 1810 | Camelford | u | Lord Henry Petty | Henry Peter Brougham | Succeeded to a peerage |
| 2 February 1810 | Scarborough | u* | Charles Manners Sutton | Charles Manners Sutton | Judge Advocate General |
| 5 February 1810 | Edinburghshire | u | Robert Saunders Dundas | Robert Saunders Dundas | President of the Board of Control |
| 5 February 1810 | Ennis | u | William Fitzgerald | William Fitzgerald | Lord of the Irish Treasury |
| 9 February 1810 | Queen's County | u* | William Wellesley Pole | William Wellesley Pole | Chief Secretary for Ireland |
| 10 February 1810 | County Louth | u* | John Jocelyn | Viscount Jocelyn | Resignation (Commissioner of Customs in Ireland) |
| 12 February 1810 | Limerick City | u | Charles Vereker | Charles Vereker | Constable of Limerick Castle |
| 16 February 1810 | Essex | c* | John Bullock | John Archer Houblon | Death |
| 16 February 1810 | Richmond | u* | Charles Lawrence Dundas | Robert Chaloner | Death |
| 27 February 1810 | Ludgershall | u | Thomas Everett | Joseph Hague Everett | Death |
| 3 March 1810 | Plympton Erle | u | William Assheton Harbord | Henry Drummond | Succeeded to a peerage |
| 3 March 1810 | Wexford Borough | u | Richard Nevill | Peter Parker | Resignation |
| 10 March 1810 | New Woodstock | u | William Frederick Elliot Eden | George Eden | Death |
| 14 March 1810 | New Windsor | u* | Richard Ramsbottom | John Ramsbottom | Resignation |
| 16 March 1810 | Cambridgeshire | u* | Charles Philip Yorke | Lord Francis Godolphin Osborne | Teller of the Exchequer |
| 19 March 1810 | Hythe | c* | Thomas Godfrey | Sir John Perring | Death |
| 24 March 1810 | Westbury | u | Francis Whittle | John De Ponthieu | Resignation |
| 10 April 1810 | Marlborough | u* | Viscount Stopford | Edward Stopford | Succeeded to a peerage |
| 16 April 1810 | Callington | u* | Thomas Carter | William Stephen Poyntz | Resignation |
| 27 April 1810 | St Germans | u | Joseph Sydney Yorke | Charles Philip Yorke | Resignation to provide a seat for his brother |
| 2 May 1810 | Renfrewshire | c* | William McDowall | Archibald Speirs | Death |
| 18 May 1810 | Gloucestershire | u | George Cranfield Berkeley | Viscount Dursley | Resignation |
| 25 May 1810 | St Germans | u | Charles Philip Yorke | Charles Philip Yorke | First Lord of the Admiralty |
| 1 June 1810 | Queenborough | c | Joseph Hunt | Richard Wellesley | Expelled for embezzling public funds |
| 15 June 1810 | Higham Ferrers | u | William Windham | Viscount Duncannon | Death |
| 28 Jun 1810 | Bletchingley | u | William Kenrick | William Kenrick | Master of the Household |
| 29 June 1810 | Weymouth and Melcombe Regis | u | Gabriel Tucker Steward | Sir John Lowther Johnstone | Resignation |
| 30 June 1810 | Ripon | u* | Frederick John Robinson | Frederick John Robinson | Lord of the Admiralty |
| 2 July 1810 | Truro | u | Charles Frederick Powlett Townshend | William John Bankes | Succeeded to a peerage |
| 6 July 1810 | Anglesey | u* | Berkeley Paget | Berkeley Paget | Junior Lord of the Treasury |
| 13 July 1810 | Dunbartonshire | u* | Henry Glassford | Archibald Campbell-Colquhoun | Resignation |
| 13 July 1810 | Elgin Burghs | u | Archibald Campbell-Colquhoun | William Dundas | Resignation to contest Dunbartonshire |
| 8 October 1810 | Northampton | u* | Edward Bouverie | William Hanbury | Death |
| 21 November 1810 | Amersham | u* | Thomas Drake Tyrwhitt-Drake | William Tyrwhitt-Drake | Death |
| 5 December 1810 | Milborne Port | u* | Viscount Lewisham | Edward Paget | Succeeded to a peerage |
| 7 December 1810 | Yarmouth | u | Viscount Valentia | Thomas Myers | Resignation |
| 28 December 1810 | Brackley | u* | Anthony Henderson | Henry Wrottesley | Death |
| 16 January 1811 | County Limerick | c* | William Odell | William Odell | Lord of the Irish Treasury |
| 7 February 1811 | Gloucestershire | c* | Viscount Dursley | Sir Berkeley William Guise | Vacated seat to claim peerage |
| 14 February 1811 | Ashburton | u* | Walter Palk | John Sullivan | Resignation |
| 22 March 1811 | Ayrshire | c* | David Boyle | Sir Hew Dalrymple Hamilton | Resignation (Lord of Session and Justiciary in Scotland) |
| 27 March 1811 | Cambridge University | c* | Earl of Euston | The Viscount Palmerston | Succeeded to a peerage |
| 28 March 1811 | Galway Borough | u* | James Daly | Frederick Ponsonby | Resignation |
| 10 April 1811 | Newport | u | The Viscount Palmerston | Cecil Bisshopp | Resignation to contest Cambridge University |
| 19 April 1811 | Ludgershall | u | Joseph Hague Everett | The Lord Headley | Resignation |
| 1 May 1811 | Taunton | u* | John Hammet | Henry Powell Collins | Death |
| 10 May 1811 | Lewes | u* | Thomas Kemp | Thomas Read Kemp | Death |
| 11 May 1811 | Weymouth and Melcombe Regis | u* | Sir James Pulteney | Sir John Murray | Death |
| 14 May 1811 | Wootton Bassett | c | Sir John Murray | Robert Knight | Resignation to contest Weymouth |
| 15 May 1811 | County Antrim | u* | John Bruce Richard O'Neill | John Bruce Richard O'Neill | Constable of Dublin Castle |
| 29 May 1811 | Dorchester | u* | Cropley Ashley Cooper | Charles Henry Bouverie | Succeeded to a peerage |
| 1 June 1811 | Haslemere | u* | Robert Ward | Robert Ward | Clerk of the Ordnance |
| 17 June 1811 | King's Lynn | u* | Lord Walpole | Lord Walpole | Lord of the Admiralty |
| 22 June 1811 | Cricklade | u | Lord Porchester | William Herbert | Succeeded to a peerage |
| 24 June 1811 | Abingdon | u* | Henry Bowyer | Sir George Bowyer | Resignation |
| 25 June 1811 | Kinross-shire | u | David Clephane | Thomas Graham | Resignation (Commissioner of Excise in Scotland) |
| 28 June 1811 | County Waterford | u* | John Claudius Beresford | Sir William Carr Beresford | Resignation |
| 1 July 1811 | Wexford Borough | u* | Peter Parker | Richard Nevill | Resignation |
| 6 July 1811 | Edinburghshire | u* | Robert Saunders Dundas | Sir George Clerk | Succeeded to a peerage |
| 12 July 1811 | Queen's County | u* | William Wellesley Pole | William Wellesley Pole | Chancellor of the Irish Exchequer |
| 20 August 1811 | Anstruther Easter Burghs | u* | Sir John Anstruther | Sir John Anstruther | Death |
| 26 August 1811 | Caithness | u | Sir John Sinclair | George Sinclair | Resignation (Cashier of Excise in Scotland) |
| 14 October 1811 | York | u* | Sir William Mordaunt Milner | Lawrence Dundas | Death |
| 23 October 1811 | Totnes | u* | William Adams | Thomas Peregrine Courtenay | Death |
| 4 November 1811 | Inverness Burghs | u* | Peter Baillie | Charles Grant | Death |
| 23 December 1811 | Shrewsbury | u* | Thomas Jones | Henry Grey Bennet | Death |
| 11 January 1812 | East Grinstead | u | Sir Nathaniel Holland | Richard Wellesley | Death |
| 13 January 1812 | Lewes | u* | Henry Shelley | George Shiffner | Death |
| 15 January 1812 | Aldeburgh | u | John McMahon | John McMahon | Receiver and Paymaster of the Royal Bounty to Officers' Widows |
| 15 January 1812 | Queenborough | u* | Richard Wellesley | Robert Moorsom | Junior Lord of the Treasury |
| 15 January 1812 | Weobley | u | Lord Guernsey | Lord Apsley | Resignation (Commission in the Army) |
| 16 January 1812 | Barnstaple | c | George Woodford Thellusson | William Busk | Death |
| 17 January 1812 | West Looe | u | James Buller | Joseph Sydney Yorke | Resignation (Clerk of the Privy Council) |
| 18 January 1812 | Weymouth and Melcombe Regis | u | Sir John Lowther Johnstone | Joseph Hume | Death |
| 21 January 1812 | Richmond | u | Lawrence Dundas | George Heneage Lawrence Dundas | Resignation to contest York |
| 8 February 1812 | Derby | u* | William Cavendish | Henry Frederick Compton Cavendish | Death |
| 21 February 1812 | Dundalk | u | Thomas Hughan | Frederick William Trench | Death |
| 26 February 1812 | Kincardineshire | u* | William Adam | George Harley Drummond | Resignation |
| 7 March 1812 | Plympton Erle | u | Viscount Castlereagh | Viscount Castlereagh | Foreign Secretary |
| 9 March 1812 | East Grinstead | u | Richard Wellesley | George William Gunning | Resignation |
| 14 March 1812 | Wootton Bassett | u* | Benjamin Walsh | John Attersoll | Expelled for Fraud |
| 19 March 1812 | Perthshire | c* | Lord James Murray | James Andrew John Lawrence Charles Drummond | Resignation |
| 26 March 1812 | Edinburgh | u* | Sir Patrick Murray | William Dundas | Resignation |
| 1 April 1812 | Lisburn | u | Earl of Yarmouth | Earl of Yarmouth | Vice-Chamberlain of the Household |
| 13 April 1812 | Aldeburgh | u | John McMahon | Sandford Graham | Resignation (Keeper of the Privy Purse) |
| 13 April 1812 | Boston | c* | Thomas Fydell | Peter Robert Drummond Burrell | Death |
| 13 April 1812 | Elgin Burghs | u | William Dundas | Archibald Campbell | Resignation to contest Edinburgh |
| 13 April 1812 | Northumberland | u* | Earl Percy | Sir Charles Monck | Elevated to the House of Lords through a Writ of acceleration |
| 20 April 1812 | County Louth | u* | Viscount Jocelyn | Viscount Jocelyn | Treasurer of the Household |
| 21 April 1812 | Hastings | u* | Sir Abraham Hume | Sir Abraham Hume | Resignation to contest Boston |
| 8 May 1812 | Launceston | u | Richard Henry Alexander Bennet | Jonathan Raine | Resignation |
| 9 May 1812 | County Antrim | u* | John Bruce Richard O'Neill | John Bruce Richard O'Neill | Voted before taking the oath |
| 26 May 1812 | Northampton | u* | Spencer Perceval | Lord Compton | Death (assassinated) |
| 30 May 1812 | County Down | u | Francis Savage | Robert Ward | Resignation |
| 30 May 1812 | Old Sarum | u* | Nicholas Vansittart | James Alexander | Chancellor of the Exchequer |
| 6 June 1812 | Staffordshire | u* | Sir Edward Littleton | Edward John Walhouse | Death |
| 8 June 1812 | East Grinstead | u | George William Gunning | Nicholas Vansittart | Resignation to provide a seat for Vansittart |
| 9 June 1812 | Cambridge University | u* | Sir Vicary Gibbs | John Henry Smyth | Resignation (Puisne Judge in the Court of Common Pleas) |
| 22 June 1812 | Plymouth | u* | Thomas Tyrwhitt | Benjamin Bloomfield | Resignation (Gentleman Usher of the Black Rod) |
| 30 Jun 1812 | Colchester | u* | Richard Hart Davis | Hart Davis | Resignation to contest Bristol |
| 1 July 1812 | Bodmin | u* | Sir William Oglander | Charles Bragge Bathurst | Resignation |
| 3 July 1812 | Downton | u* | Sir Thomas Plumer | Sir Thomas Plumer | Attorney General for England and Wales |
| 7 July 1812 | Grampound | u* | George Augustus Frederick Cochrane | Andrew James Cochrane Johnstone | Resignation |
| 15 Jul 1812 | Bristol | c* | Charles Bragge Bathurst | Richard Hart Davis | Chancellor of the Duchy of Lancaster |
| 6 August 1812 | Ashburton | u | Lord Charles Bentinck | Lord Charles Bentinck | Treasurer of the Household |
| u* | John Sullivan | John Sullivan | Commissioner of the Board of Control |