| Alan Charles Froggatt | Director | 1 Oct 2003 | 18 Dec 2003 | British | 76 years |
| Alex Constantinos Naftis | Secretary | 31 Mar 2000 | 12 Feb 2003 | British | - |
| Alexis John Lowth | Director | 5 Jul 2005 | 16 Jan 2009 | British | 54 years |
| Andrew Michael Smart | Director | 5 Jul 2005 | 30 Nov 2006 | British | 58 years |
| Christopher J Browne | Director | 30 Nov 2006 | 1 Aug 2008 | American | 62 years |
| Colin Eric Hall | Director | 18 Dec 2003 | 16 Jul 2004 | British | 65 years |
| Donald Newell | Director | 22 Jul 1991 | 18 Nov 1998 | British | 83 years |
| Elizabeth Cormack Thetford | Director | 30 Nov 2006 | 16 Jan 2009 | British | 71 years |
| Elizabeth Cormack Thetford | Secretary | 16 Jul 2004 | 16 Jan 2009 | British | - |
| Elizabeth Thetford | Director | 12 Feb 2003 | 18 Dec 2003 | British | 71 years |
| Elizabeth Thetford | Secretary | 12 Feb 2003 | 18 Dec 2003 | British | - |
| Ellis Dewitt Reiter | Director | 12 Feb 2003 | 18 Dec 2003 | American | 87 years |
| Jeremy David Kraft | Director | 16 Dec 2002 | 12 Feb 2003 | British | 60 years |
| John Kenneth Swain | Secretary | 13 Jun 1991 | 31 Mar 2000 | British | - |
| John Thomas Thornton | Director | 12 Feb 2003 | 18 Dec 2003 | American | 70 years |
| Mark Caskey | Director | 16 Jan 2009 | 31 Jan 2015 | British | 53 years |
| Mark Caskey | Secretary | 16 Jan 2009 | 5 Jul 2012 | British | - |
| Mark Francis Creamer | Director | 4 Jan 2001 | 12 Feb 2003 | British | 68 years |
| Martin Victor Lubieniecki | Director | 1 Oct 2003 | 18 Dec 2003 | British | 62 years |
| Martin Victor Lubieniecki | Director | 30 Jun 2004 | 5 Jul 2005 | British | 62 years |
| Matthew Barrington Pullen | Director | 1 Aug 2008 | 5 Nov 2012 | British | 57 years |
| Michael Essex Digby | Director | 13 Jun 1991 | 22 Jul 1991 | British | 92 years |
| Michael John Hallett | Director | 13 Jun 1991 | 22 Jul 1991 | British | 92 years |
| Nigel Barry Anderson | Director | 30 Jun 2004 | 5 Jul 2005 | British | 74 years |
| Peter William Gingell | Director | 18 Dec 2003 | 16 Jul 2004 | English | 71 years |
| Peter William Gingell | Secretary | 18 Dec 2003 | 16 Jul 2004 | English | - |
| Robert Andrew Farnes | Director | 18 Nov 1998 | 16 Dec 2002 | British | 80 years |
| Robert Mark Dunk | Director | 31 Jan 2015 | 31 Dec 2015 | British | 54 years |
| Roderick Andrew Grant | Director | 22 Jul 1991 | 4 Jan 2001 | British | 83 years |
| Simon Joseph Guy Pascoe | Director | 16 Jan 2009 | 31 Mar 2014 | British | 68 years |