| Dick Taverne | April 1968 | 13 October 1969 |
| William Thomas Rodgers | October 1969 | June 1970 |
| Terence Langley Higgins | April 1970 | 1972 |
| Robert Edward Sheldon | October 1974 | June 1975 |
| David John Denzil Davies | 17 June 1975 | 4 May 1979 |
| Sir Francis Arthur Cockfield, Baron Cockfield | 1979 | 1982 |
| Peter Wynford Innes Rees | 6 May 1979 | 14 September 1981 |
| John Bruce-Gardyne, Lord Bruce-Gardyne | 15 September 1981 | 11 November 1981 |
| Bernard John Hayhoe | 11 November 1981 | 2 September 1985 |
| John Wakeham | 6 April 1982 | 13 June 1983 |
| Ian Reginald Edward Gow | 2 September 1985 | 19 November 1985 |
| Peter Leonard Brooke | 19 November 1985 | 13 June 1987 |
| Gillian Patricia Shephard | 28 November 1990 | 14 April 1992 |
| Sir Theodore Thomas More Agnew, Baron Agnew of Oulton | 14 February 2020 | 24 January 2022 |