| Rt Hon Francis Aungier Pakenham, Baron Pakenham | 1948 | 1951 |
| Rt Hon George Edward Peter Thorneycroft | 27 July 1960 | 13 July 1962 |
| Rt Hon Harold Julian Amery | 1962 | October 1964 |
| Roy Harris Jenkins | October 1964 | 23 December 1965 |
| Rt Hon Frederick William Mulley | 1965 | January 1967 |
| John Thomson Stonehouse | January 1967 | February 1967 |
| William Michael Hardy Spicer | 1985 | 1987 |