| Agnes Christina Lynch | Director | 1 Jan 2009 | 22 Mar 2013 | British | 59 years |
| Agnes Christina Lynch | Secretary | 1 Jan 2009 | 22 Mar 2013 | British | - |
| Alastair Ross Goobey | Director | 18 Feb 1993 | 31 Dec 2001 | British | 81 years |
| Andrew Richard Threadgold | Director | 4 Aug 1991 | 31 Jan 1993 | British | 82 years |
| Anthony Watson | Director | 1 Jan 2002 | 31 Jan 2006 | British | 81 years |
| Arthur David Chessells | Director | 14 Jan 1999 | 31 Dec 2007 | British | 85 years |
| Beryl Ann Shepherd | Director | 11 Jan 2011 | 2 May 2024 | British | 68 years |
| Colin Charles Hartridge- Price | Director | 1 Feb 1996 | 31 Dec 2008 | British | 79 years |
| Colin Charles Hartridge- Price | Secretary | 1 Feb 1996 | 31 Dec 2008 | British | - |
| Douglas Morpeth | Director | 4 Aug 1991 | 30 Sept 1992 | British | 102 years |
| Elizabeth Lynxwiler | Director | 2 Jun 2023 | 5 Aug 2024 | British,american | 54 years |
| Gillian Haselden | Director | 5 Aug 2024 | 1 Aug 2025 | British | 58 years |
| Howard Marchant | Director | 21 Dec 1995 | 10 Jan 2011 | British | 81 years |
| James Douglas Spooner | Director | 16 Oct 1992 | 31 Dec 1998 | British | 94 years |
| John Stephen Sadler | Director | 4 Aug 1991 | 30 Apr 1998 | British | 96 years |
| Katherine Ann Tollis | Director | 14 Feb 2020 | 2 Jun 2023 | British | 57 years |
| Katherine Ann Tollis | Secretary | 14 Feb 2020 | 19 May 2020 | - | - |
| Mark Jonathon Anson | Director | 1 Feb 2006 | 31 Aug 2007 | American | 67 years |
| Martin John Reed | Director | 16 Oct 1992 | 31 Jan 1996 | British | 89 years |
| Martin John Reed | Secretary | 4 Aug 1991 | 31 Jan 1996 | British | - |
| Nigel Labram | Director | 1 Jan 2008 | 31 May 2012 | British | 73 years |
| Ralph Mason Bunnage | Director | 4 Aug 1991 | 31 Aug 1995 | British | 101 years |
| Robert Alan Padgett | Director | 4 Aug 1991 | 16 Oct 1992 | British | 83 years |
| Roderick David Kent | Director | 1 Jan 2008 | 28 Feb 2011 | British | 79 years |
| Roy John Bell | Director | 16 Dec 1993 | 27 Jul 1995 | British | 93 years |
| Susan Welch | Director | 22 Mar 2013 | 14 Feb 2020 | British | 60 years |
| Susan Welch | Secretary | 22 Mar 2013 | 14 Feb 2020 | - | - |
