| Brian Kenneth Jackson | Director | 1 Dec 1994 | 13 Mar 1998 | British | 88 years |
| Christopher Edmund Finney | Director | 25 Jun 1992 | 20 Mar 2001 | British | 85 years |
| Christopher Edward Cumming | Director | 25 Jun 1992 | 31 Jan 2002 | Scottish | 84 years |
| David Andrew Abercromby Brock | Director | 24 Jan 2011 | 30 Apr 2023 | British | 64 years |
| David John Cox | Director | 24 Jan 2011 | 19 Sept 2023 | British | 65 years |
| Derek Reginald Foreman | Director | 27 Jan 2004 | 17 Jan 2006 | British | 82 years |
| Joanna Maria Field | Secretary | 27 Jan 2015 | 31 Mar 2017 | - | - |
| John Leslie Martin | Director | 3 Oct 2002 | 20 Sept 2019 | British | 74 years |
| Keith John Howells | Director | 9 Apr 1998 | 30 Jun 2019 | British | 73 years |
| Kevin John Stovell | Director | 29 Jul 2005 | 27 Nov 2015 | British | 74 years |
| Marian Michele Brooks | Director | 30 Sept 2003 | 31 Oct 2012 | British | 72 years |
| Marjorie Eva Lynn | Secretary | 18 Feb 1998 | 27 Jan 2015 | British | - |
| Martin James Grigor | Secretary | 22 Oct 1993 | 1 Dec 1994 | British | - |
| Martin Stevenson Crosbie Frame | Director | 2 Jul 2002 | 29 Apr 2005 | British | 81 years |
| Michael David Haigh | Director | 27 Nov 2015 | 31 Jul 2022 | British | 66 years |
| Michael Orlando Blackburn | Director | 27 Jan 2004 | 18 Oct 2007 | British | 81 years |
| Peter John Wickens | Director | 29 Jul 2005 | 31 Dec 2010 | British | 76 years |
| Peter Stuart Lee | Director | 1 Oct 1993 | 1 Dec 1994 | British | 81 years |
| Philip Charles Gregory | Secretary | 15 Mar 1996 | 18 Feb 1998 | British | - |
| Richard Paul Birch | Director | 9 Apr 1998 | 31 Dec 2010 | British | 78 years |
| Robin Bretten Fox | Director | 25 Jun 1992 | 22 Oct 1993 | British | 83 years |
| Robin Bretten Fox | Director | 9 May 1994 | 10 May 2002 | British | 83 years |
| Robin Bretten Fox | Secretary | 25 Jun 1992 | 9 May 1994 | British | - |
| Vincent Robert Mcdonnell | Director | 3 Oct 2002 | 29 Aug 2003 | British | 75 years |
| William Gregor Desson | Secretary | 1 Dec 1994 | 15 Mar 1996 | British | - |