| Janet Lee | 20 October 1964 | 19 June 1970 |
| Rt Hon Sir David McAdam Eccles, Viscount Eccles | 1970 | 1973 |
| Rt Hon Henry Paul Guinness Channon | 5 January 1981 | 1983 |
| Alexander Patric Greysteil Hore-Ruthven, Baron Ruthven of Gowrie | 1983 | 3 September 1985 |
| Rt Hon Sir Ronald Timothy Renton | 28 November 1990 | 11 April 1992 |
| Rt Hon Dr Tessa Ann Vosper Blackstone, Baroness Blackstone | June 2001 | 13 June 2003 |
| Rt Hon Estelle Morris | 13 July 2003 |