| Individual | Party | Born | Died | Constituency(ies) represented | Election(s) won |
|---|
| Tim Boswell, Baron Boswell of Aynho [2025 1] | | Conservative | 2 December 1942 | 30 August 2025 | Daventry | 1987, 1992, 1997, 2001, 2005 |
| Dame Annette Brooke [2025 2] | | Liberal Democrats | 7 June 1947 | 20 August 2025 | Mid Dorset and North Poole | 2001, 2005, 2010 |
| Menzies Campbell, Baron Campbell of Pittenweem [2025 3] | | Liberal Democrats | 22 May 1941 | 26 September 2025 | North East Fife | 1987, 1992, 1997, 2001, 2005, 2010 |
| Iain Coleman [2025 4] | | Labour | 18 January 1958 | 20 September 2025 | Hammersmith and Fulham | 1997, 2001 |
| Oliver Colvile [2025 5] | | Conservative | 26 August 1959 | 20 October 2025 | Plymouth Sutton and Devonport | 2010, 2015 |
| Lawrence Cunliffe [2025 6] | | Labour | 25 March 1929 | 7 February 2025 | Leigh | 1979, 1983, 1987, 1992, 1997 |
| Quentin Davies, Baron Davies of Stamford [2025 7] | | Labour [i] | 29 May 1944 | 13 January 2025 | Stamford and Spalding
Grantham and Stamford | 1987, 1992
1997, 2001, 2005 |
| Dafydd Elis-Thomas, Baron Elis-Thomas [2025 8] | | Plaid Cymru | 18 October 1946 | 7 February 2025 | Merioneth
Meirionnydd Nant Conwy | 1974 I & II, 1979
1983, 1987 |
| Mark Fisher [2025 9] | | Labour | 29 October 1944 | 18 November 2025 | Stoke-on-Trent Central | 1983, 1987, 1992, 1997, 2001, 2005 |
| Roger Freeman, Baron Freeman [2025 10] | | Conservative | 27 May 1942 | 2 June 2025 | Kettering | 1983, 1987, 1992 |
| Barry Henderson [2025 11] | | Conservative | 29 April 1936 | 14 November 2025 | East Dunbartonshire
East Fife
North East Fife | 1974 I
1979
1983 |
| Terence Higgins, Baron Higgins [2025 12] | | Conservative | 18 January 1928 | 25 November 2025 | Worthing | 1964, 1966, 1970, 1974 I & II, 1979, 1983, 1987, 1992 |
| Alan Howarth, Baron Howarth of Newport [2025 13] | | Labour [j] | 11 June 1944 | 10 September 2025 | Stratford-on-Avon
Newport East | 1983, 1987, 1992
1997, 2001 |
| Sir David Knox [2025 14] | | Conservative | 30 May 1933 | 14 September 2025 | Leek
Staffordshire Moorlands | 1970, 1974 I & II, 1979
1983, 1987, 1992 |
| Sir Mark Lennox-Boyd [2025 15] | | Conservative | 4 May 1943 | 24 July 2025 | Morecambe and Lonsdale
Morecambe and Lunesdale | 1979
1983, 1987, 1992 |
| John Marshall [2025 16] | | Conservative | 19 August 1940 | 3 November 2025 | Hendon South | 1987, 1992 |
| John Maxton, Baron Maxton [2025 17] | | Labour | 5 May 1936 | 20 November 2025 | Glasgow Cathcart | 1979, 1983, 1987, 1992, 1997 |
| Sir Patrick McNair-Wilson [2025 18] | | Conservative | 28 May 1929 | December 2025 | Lewisham West
New Forest | 1964
1968 (by-election), 1970, 1974 I & II, 1979, 1983, 1987, 1992 |
| Sir Bill O'Brien [2025 19] | | Labour | 25 January 1929 | 18 May 2025 | Normanton | 1983, 1987, 1992, 1997, 2001 |
| Sally Oppenheim-Barnes, Baroness Oppenheim-Barnes [2025 20] | | Conservative | 26 July 1928 | 1 January 2025 | Gloucester | 1970, 1974 I & II, 1979, 1983 |
| Sir George Reid [2025 21] | | Scottish National | 4 June 1939 | 12 August 2025 | Clackmannan and Eastern Stirlingshire | 1974 I & II |
| Fred Silvester [2025 22] | | Conservative | 20 September 1933 | 5 July 2025 | Walthamstow West
Manchester Withington | 1967 (by-election)
1974 I & II, 1979, 1983 |
| Martin Smyth [2025 23] | | Ulster Unionist | 15 June 1931 | 22 August 2025 | Belfast South | 1982 (by-election), 1983, 1987, 1992, 1997, 2001 |
| Sir John Stanley [2025 24] | | Conservative | 19 January 1942 | 28 November 2025 | Tonbridge and Malling | 1974 I & II, 1979, 1983, 1987, 1992, 1997, 2001, 2005, 2010 |
| Dick Taverne, Baron Taverne [2025 25] | | Democratic Labour | 18 October 1928 | 25 October 2025 | Lincoln | 1962 (by-election), 1964, 1966, 1970, 1974 I |
| Norman Tebbit, Baron Tebbit [2025 26] | | Conservative | 29 March 1931 | 7 July 2025 | Epping
Chingford | 1970
1974 I & II, 1979, 1983, 1987 |
| David Warburton [2025 27] | | Conservative | 28 October 1965 | 26 August 2025 | Somerton and Frome | 2015, 2017, 2019 |