| Anthony Schofield | Director | 18 May 2006 | 30 Sept 2008 | British | 67 years |
| Charles Bennett Brown | Director | 22 May 2003 | 26 Jul 2005 | British | 60 years |
| Charles Bennett Brown | Secretary | 4 May 2001 | 22 May 2003 | British | - |
| David Smith Mitchell | Director | 10 Mar 1997 | 27 Apr 2000 | British | 89 years |
| Graham Charles Hetherington | Director | 6 Aug 1996 | 31 Jan 1997 | British | 67 years |
| Graham Charles Hetherington | Director | 31 Aug 1999 | 4 May 2001 | British | 67 years |
| Graham Hammond Smith | Director | 5 Feb 1993 | 30 Nov 1995 | British | 78 years |
| Herve Denis Michel Fetter | Director | 1 Oct 2008 | 31 Aug 2017 | French | 63 years |
| Iain Norris James Artis | Director | 8 Jan 1996 | 31 Dec 1997 | British | 71 years |
| Ian Terence Fitzsimons | Director | 7 Sept 2005 | 1 Sept 2006 | British | 62 years |
| Jane Egan | Secretary | 1 Sept 2006 | 14 Feb 2011 | British | - |
| John Michael Tomlinson | Director | 12 May 1992 | 31 Aug 1994 | British | 92 years |
| John Michael Tomlinson | Secretary | 12 May 1992 | 31 Aug 1994 | British | - |
| Joseph Michael Wooters | Director | 31 Aug 1994 | 1 Jul 1996 | American | 82 years |
| Joseph Michael Wooters | Secretary | 31 Aug 1994 | 1 Jul 1996 | American | - |
| Leonard Anthony Quaranto | Director | 28 Aug 2001 | 22 May 2003 | American | 79 years |
| Michael Peter Bennett | Director | 10 Mar 1997 | 31 Aug 1999 | British | 68 years |
| Nicholas David Martin Giles | Secretary | 7 Jan 2005 | 23 Sept 2005 | British | - |
| Peter Adrian Kinnear Wood | Director | 14 Mar 1995 | 30 Jun 1997 | British | 90 years |
| Peter John Lyster | Director | 4 May 2001 | 7 Sept 2005 | British | 74 years |
| Peter Martin Burrell | Director | 27 Apr 2000 | 4 May 2001 | British | 79 years |
| Peter William Rosewell | Director | 12 May 1992 | 14 Mar 1995 | British | 85 years |
| Philippa Armstrong | Secretary | 23 Sept 2005 | 19 Jun 2006 | British | - |
| Russell Phelps Kelley | Director | 4 May 2001 | 28 Aug 2001 | United States | 77 years |
| Sarah Helen Hughes | Secretary | 22 May 2003 | 7 Jan 2005 | British | - |
| Stuart Macnab | Director | 1 Sept 2006 | 31 Mar 2022 | British | 62 years |
| Stuart Macnab | Secretary | 29 Feb 2008 | 14 Feb 2011 | British | - |
| Thomas Gordon Mains | Director | 8 Jan 1996 | 1 Sept 2006 | British | 75 years |
| Thomas Gordon Mains | Secretary | 8 Jan 1996 | 4 May 2001 | British | - |
| Thomas Gordon Mains | Secretary | 19 Jun 2006 | 1 Sept 2006 | British | - |
| Vincent Turpin | Director | 1 Sept 2017 | 30 Sept 2020 | French | 48 years |