| Amanda Jean Marsh | Director | 1 Sept 1992 | 29 Apr 1994 | British | 70 years |
| Anne Gallagher | Director | 31 Aug 2000 | 28 Mar 2006 | British | 65 years |
| Anne Gallagher | Director | 6 Apr 2006 | 23 Nov 2018 | British | 65 years |
| Anthony James Chivers | Director | 1 Sept 1992 | 3 Oct 2000 | British | 90 years |
| Brian Mark Johnson | Director | 23 Nov 2018 | 21 Aug 2023 | British | 52 years |
| Caroline Susan Freeman | Secretary | 1 Sept 1992 | 3 Apr 1998 | British | - |
| Catherine Elizabeth Dyson | Director | 23 Nov 2018 | 3 Apr 2024 | British | 50 years |
| John Arthur Thomas Wedgwood | Director | 1 Sept 1992 | 23 Nov 2018 | British | 86 years |
| Keith Malcolm Hedley Millar | Director | 5 May 1995 | 17 May 2006 | British | 93 years |
| Kerry Anne Abigail Thomas | Secretary | 31 May 1999 | 27 Feb 2003 | British | - |
| Lynda Lavelle | Secretary | 3 Apr 1998 | 31 May 1999 | British | - |
| Michael John Whitmarsh | Director | 1 Sept 1992 | 23 Nov 2018 | British | 85 years |
| Philip Edward Shaw | Director | 6 Apr 2006 | 23 Nov 2018 | British | 65 years |
| Philip Nicholas Whittome | Director | 9 Jul 2003 | 28 Mar 2006 | British | 62 years |
| Philip Nicholas Whittome | Director | 6 Apr 2006 | 23 Nov 2018 | British | 62 years |
| Richard Russell Farrell | Director | 29 Apr 1993 | 17 May 2006 | British | 83 years |
| Roger Allin King | Director | 13 Feb 2006 | 2 May 2013 | British | 84 years |