| Rt Hon Barbara Anne Castle | 6 April 1968 | 19 June 1970 |
| Rt Hon Leonard Robert Carr | June 1970 | 7 April 1972 |
| Rt Hon Maurice Victor Macmillan | 7 April 1972 | 2 December 1973 |
| Rt Hon William Stephen Ian Whitelaw | 1973 | 1974 |
| Rt Hon Michael Mackintosh Foot | 5 March 1974 | 8 April 1976 |
| Rt Hon Albert Edward Booth | April 1976 | May 1979 |
| Rt Hon James Michael Leathes Prior | 4 May 1979 | 14 September 1981 |
| Norman Beresford Tebbit | 14 September 1981 | 16 October 1983 |
| Rt Hon Thomas Jeremy King | 16 October 1983 | September 1985 |
| Rt Hon David Ivor Young, Baron Young of Graffham | 2 September 1985 | 13 June 1987 |
| Rt Hon Peter Norman Fowler | 13 June 1987 | 3 January 1990 |
| Michael Howard | January 1990 | 11 April 1992 |
| Rt Hon Gillian Patricia Shephard | 11 April 1992 | 27 May 1993 |
| Rt Hon David James Fletcher Hunt | 27 May 1993 | 20 July 1994 |
| Rt Hon Michael Denzil Xavier Portillo | July 1994 | 5 July 1995 |