| Alexandra Jane Andrew | Director | 25 Jul 2000 | 18 May 2022 | British | 58 years |
| Andrea Sari Victoria Evetts | Secretary | 16 Jul 1991 | 10 Oct 1995 | British | - |
| David Miles Backhouse | Director | 16 Jul 1991 | 31 Dec 2007 | British | 87 years |
| Doris Campbell | Director | 16 Jul 1991 | 28 Sept 2006 | British | 117 years |
| Gordon Charles Exeter | Director | 16 Jul 1991 | 31 Dec 1992 | British | 83 years |
| Graeme Gardner Donald | Director | 16 Jul 1991 | 19 Feb 1994 | British | 94 years |
| John Austen Anstruther-gough-calthorpe | Director | 24 Apr 2001 | 18 May 2022 | British | 79 years |
| Linda Frances Campbell | Director | 16 Jul 1991 | 18 May 2022 | British | 85 years |
| Michael David Colin Craven Campbell | Director | N/A | 23 Sept 2025 | British | 84 years |
| Roger William Carey | Director | 2 Jul 1996 | 1 Jan 2021 | British | 82 years |
| Timothy Spencer Barlow | Director | 8 Sept 2016 | 18 May 2022 | British | 59 years |
| Trevor Martin Aldridge | Director | 18 Oct 1994 | 31 Dec 2003 | British | 93 years |