| Andrew Richard Wood | Director | 1 Apr 1997 | 16 Jun 2000 | British | 75 years |
| Barry Alexander Reeves | Director | 11 Nov 2004 | 30 Sept 2006 | British | 69 years |
| Brigitte Bouquot | Director | 12 Jul 2000 | 20 Nov 2002 | French | 70 years |
| Christopher Ian Darnell | Director | 1 Jun 2003 | 31 Oct 2006 | British | 76 years |
| Christopher William Hindle | Director | 3 Feb 2025 | 14 Jul 2025 | British | 58 years |
| Colin Michael Chandler | Director | 15 Feb 2000 | 12 Jul 2000 | British | 87 years |
| David Robert Geoffrey Horne | Director | 20 Nov 2002 | 31 Jan 2007 | British | 72 years |
| David Whittaker | Director | 6 Oct 1997 | 15 Feb 2000 | British | 82 years |
| David Whittaker | Director | 15 Feb 2000 | 16 Jun 2000 | British | 82 years |
| Ernest Thomas Harrison | Director | 22 Aug 1992 | 15 Feb 2000 | British | 100 years |
| James Edward Handley | Director | 20 Nov 2002 | 2 Dec 2003 | British | 75 years |
| James Maxwell Kaye | Director | 22 Aug 1992 | 31 Mar 1995 | British | 89 years |
| John Victor Belcher | Secretary | 22 Aug 1992 | 30 Nov 2000 | British | - |
| Kathryn Helen Jenkins | Director | 2 Dec 2003 | 11 Nov 2004 | British | 60 years |
| Michael Dalton Murray | Director | 31 Jan 2007 | 19 Dec 2008 | Irish | 67 years |
| Michael William Peter Seabrook | Secretary | 30 Nov 2000 | 3 Feb 2025 | British | - |
| Morley Slade | Director | 1 Jun 1999 | 1 Jun 2003 | British | 82 years |
| Nicholas Topazio | Director | 16 Jun 2000 | 31 Oct 2002 | British | 66 years |
| Reginald Frederick Borham | Director | 1 Oct 1997 | 3 Aug 2000 | British | 100 years |
| Robert John Preston | Director | 1 Dec 2000 | 1 Apr 2013 | British | 83 years |
| Robert John Preston | Director | 1 Apr 2013 | 3 Feb 2025 | British | 83 years |
| Roger Norman Freeman | Director | 12 Jul 2000 | 19 Dec 2008 | British | 84 years |
| Simon Roberts | Director | 13 Mar 2007 | 3 Feb 2025 | British | 69 years |