| Geoffrey Edge | 1974 | 1976 |
| Gerald Teasdale Fowler | October 1974 | January 1976 |
| Dr Norman Crowther-Hunt, Lord Crowther-Hunt | 1976 | 1976 |
| John Smith | 8 April 1976 | 11 November 1978 |
| Richard Napier Luce, Baron Luce | 3 September 1985 | 25 July 1990 |
| Rt Hon David John Mellor | 24 July 1990 | 28 November 1990 |