| Rt Hon Richard Howard Stafford Crossman | 1969 | April 1970 |
| Rt Hon Sir Keith Sinjohn Joseph, bt | 20 June 1970 | 4 March 1974 |
| Rt Hon Charles Patrick Fleeming Jenkin | May 1979 | 14 September 1981 |
| Rt Hon Peter Norman Fowler | 14 September 1981 | 13 June 1987 |
| Rt Hon John Edward Michael Moore | 13 June 1987 | 25 July 1988 |