| Sir Gordon Cosmo Touche | 1956 | 1959 |
| Henry Oscar Murton | October 1974 | February 1976 |
| Michael John Martin, Baron Martin of Springburn | May 1997 | 22 October 2000 |
| Nigel Martin Evans | 8 June 2010 | 10 September 2013 |
| Eleanor Fulton Pritchard Laing | 15 October 2013 | |
| Judith Mary Cummins | 23 July 2024 |