| Andrew John Purvis | Director | 1 Jan 2008 | 30 Apr 2021 | British | 66 years |
| Caroline Anne Riddy | Director | 28 Apr 2021 | 19 Jun 2024 | British | 48 years |
| Clifton Adrian Melvin | Director | 21 Aug 2001 | 10 Jul 2003 | British | 72 years |
| Emily Elizabeth Coupland | Director | 29 Nov 2023 | 3 Nov 2025 | British | 58 years |
| Geoffrey John Boutle | Secretary | 1 Apr 1992 | 12 Sept 2000 | British | - |
| Gloria Dorothy Hooper | Director | 7 Oct 1993 | 31 Dec 2002 | British | 87 years |
| Graham Lloyd Singleton | Director | 9 Apr 2002 | 29 May 2003 | British | 63 years |
| Hans Rudolf Strickler | Director | 15 Dec 1999 | 23 Nov 2000 | Swiss | 79 years |
| Ian David Lea Richardson | Director | 21 Mar 2007 | 31 Dec 2007 | British | 81 years |
| James Mcdonald Buchanan Hare | Director | 25 Jun 2003 | 31 Mar 2007 | British | 71 years |
| Jeremy Peter Small | Director | 30 Apr 2007 | 16 Jun 2020 | British | 61 years |
| Jeremy Peter Small | Secretary | 30 Apr 2007 | 16 Jun 2020 | British | - |
| John Charles Finan | Director | 5 Feb 1992 | 21 Aug 2001 | Irish | 88 years |
| Kevin Ashley Lockwood | Secretary | 13 Mar 2001 | 28 Aug 2002 | British | - |
| Kirsten Ann Beggs | Secretary | 24 Jul 2020 | 28 Feb 2023 | - | - |
| Kristina Maria Isherwood | Director | 3 Nov 2003 | 31 Mar 2007 | British | 58 years |
| Michael Kohler | Director | 15 Dec 1999 | 30 Nov 2001 | Swiss | 82 years |
| Neil Jonathan Cantle | Director | 9 Apr 2002 | 3 Nov 2003 | British | 54 years |
| Neil Jonathan Cantle | Secretary | 12 Sept 2000 | 13 Mar 2001 | British | - |
| Neil Jonathan Cantle | Secretary | 28 Aug 2002 | 1 Sept 2003 | British | - |
| Peter Vogel | Director | 23 May 1992 | 7 Oct 1993 | Swiss | 82 years |
| Richard Anthony Francis Ostime | Director | 23 May 1992 | 31 Dec 2002 | British | 92 years |
| Sandra Judith Basaran | Director | 3 Nov 2003 | 30 Apr 2007 | British | 65 years |
| Sandra Judith Basaran | Secretary | 1 Sept 2003 | 30 Apr 2007 | British | - |
| Sarah Amy O'reilly | Secretary | 19 Jun 2024 | 30 Apr 2025 | - | - |
| Silvio Baldassare Caflisch | Director | 23 May 1992 | 17 Aug 1995 | Swiss | 92 years |
| Stephane Charles Sarbach | Director | 23 May 1992 | 17 Dec 1999 | Swiss | 79 years |
| Susan Nicola Teale | Director | 24 Jul 2020 | 8 Oct 2023 | British | 64 years |
| Thomas Edouard Popp | Director | 16 Aug 1995 | 23 Nov 2000 | Swiss | 77 years |
| William Nicholas Hood | Director | 23 May 1992 | 31 Dec 2002 | British | 91 years |
