| Adrian Hennah | Director | 27 Jul 1995 | 1 Mar 1999 | British | 68 years |
| Alan George Burns | Director | 2 Sept 2015 | 29 Jan 2016 | British | 50 years |
| Allan Baxter | Director | 19 Jan 1995 | 30 Jun 2010 | British | 75 years |
| Audra Jane Halsey | Director | 26 Feb 2021 | 20 Sept 2023 | British | 51 years |
| Barry Clive Ross | Director | 16 Feb 1994 | 30 Jan 1995 | British | 77 years |
| Barry John Price | Director | 1 Sept 1992 | 1 Dec 1993 | British | 82 years |
| Christopher Adam | Director | 16 Feb 1994 | 26 Jan 1995 | British | 85 years |
| Christopher Lindsay Christian | Secretary | 1 Nov 1995 | 15 Aug 1997 | British | - |
| Darrell Baker | Director | 1 Jul 2010 | 18 Feb 2013 | British | 72 years |
| David George Allen | Director | 1 Dec 2015 | 30 Apr 2024 | British | 66 years |
| Douglas Malcolm Hurt | Director | 8 Feb 1993 | 31 Jul 1995 | British | 69 years |
| Franz Bernhard Humer | Director | 1 Aug 1994 | 1 Dec 1994 | Swiss | 79 years |
| Goran Albert Torstensson Ando | Director | 1 Sept 1992 | 16 Jan 1995 | Swedish | 76 years |
| Ian Tomlinson | Director | 13 Feb 2013 | 1 Aug 2015 | British | 56 years |
| James Barry Douglas Palmer | Director | 19 Jan 1995 | 1 Dec 2002 | British | 72 years |
| James Edward Niedel | Director | 19 Jan 1995 | 19 Mar 2001 | American | 81 years |
| Jerome Charles Maurice Andries | Director | 12 Apr 2018 | 1 Mar 2023 | French | 56 years |
| Jill Dawn Anderson | Director | 1 Mar 2023 | 25 Jun 2024 | British | 61 years |
| Jonathan Laurence Patrick Hyde | Secretary | 8 Dec 1994 | 31 Oct 1995 | British | - |
| Jonathan Mark Bolton | Secretary | 15 Aug 1997 | 8 Apr 1998 | British | - |
| Joseph Michael Feczko | Director | 5 Nov 1992 | 30 Jan 1995 | American | 76 years |
| Lucy Gene Martindale | Director | 1 Mar 1999 | 31 Jan 2001 | American | 71 years |
| Mark Henry Richmond | Director | 1 Dec 1993 | 17 Jan 1995 | British | 94 years |
| Richard Brook Sykes | Director | 1 Sept 1992 | 31 Jul 1994 | British | 83 years |
| Roy Thomas Brittain | Director | 1 Sept 1992 | 31 Dec 1992 | British | 95 years |
| Sean Patrick Lance | Director | 1 Sept 1992 | 24 May 1993 | Irish | 78 years |
| Simon Michael Bicknell | Secretary | 1 Sept 1992 | 8 Dec 1994 | British | - |
| Simon Michael Bicknell | Secretary | 8 Apr 1998 | 28 Feb 2011 | British | - |
| Terence Eaves | Director | 1 Sept 1992 | 16 Jan 1995 | British | 79 years |
| Terence Eaves | Director | 27 Jul 1995 | 31 Jan 2001 | British | 79 years |