| Abigail Holladay | Director | 1 Jan 1999 | 16 Oct 2003 | British | 61 years |
| Caroline Janet Banszky | Director | 13 Feb 2002 | 31 Aug 2016 | British | 73 years |
| Christopher Charles Biddulph Duffett | Director | 5 May 1992 | 9 Apr 2002 | British | 83 years |
| Clive Laurence Charles Rakestrow | Director | 1 Jan 1999 | 27 Oct 2004 | British | 69 years |
| Darren Andrew Levene | Director | 10 Mar 2015 | 30 Nov 2020 | British | 52 years |
| David Frank Norris | Director | 17 Nov 1992 | 16 Oct 2003 | British | 79 years |
| Denyse Monique Anderson | Director | 17 Nov 1992 | 30 Jun 2022 | British | 73 years |
| Graham Idris Lane | Director | 5 May 1992 | 22 Dec 1998 | British | 90 years |
| Hester Raphaella Anne Scotton | Director | 21 Apr 2021 | 11 Oct 2024 | British | 43 years |
| Howard Clive Rumbelow | Director | 17 Nov 1992 | 19 Oct 1993 | British | 93 years |
| John Jeremy Mckinnell Potter | Director | 5 May 1992 | 30 Nov 1992 | British | 89 years |
| John Jeremy Mckinnell Potter | Secretary | 5 May 1992 | 17 Nov 1992 | British | - |
| John Kenneth Howell | Secretary | 17 Nov 1992 | 5 Sept 1997 | British | - |
| Julian Robert Mason-jebb | Director | 17 Nov 1992 | 31 Mar 2017 | British | 71 years |
| Kelly Ann Stobbs-miller | Director | 21 Apr 2021 | 18 Dec 2024 | British | 41 years |
| Michael Andrew Caldicott | Director | 17 Sept 1996 | 5 Sept 1997 | British | 75 years |
| Michael Charles Adams | Director | 31 Aug 2016 | 22 Oct 2017 | British | 63 years |
| Richard David Rance | Director | 23 Apr 2003 | 28 Sept 2022 | British | 71 years |
| Richard Forbes Thomas | Director | 2 Dec 1992 | 14 Dec 1993 | British | 82 years |
| Robert James Williams | Director | 19 Oct 1993 | 31 Dec 2004 | British | 78 years |