| Alan Waterhouse | Secretary | 1 Sept 1998 | 27 Jul 2005 | British | - |
| Barry Richard Twite | Director | 1 May 1992 | 13 Apr 1994 | British | 77 years |
| Brian Arthur Williams | Director | 3 Feb 1995 | 7 Feb 2000 | British | 75 years |
| Carol Jayne Nunn | Secretary | 20 Dec 2012 | 17 May 2019 | - | - |
| Caterina De Feo | Secretary | 1 Aug 2009 | 31 Aug 2010 | British | - |
| Christopher Peter Cohen | Director | 31 Mar 1998 | 2 Oct 1998 | British | 75 years |
| Christopher Peter Cohen | Secretary | 31 Mar 1998 | 2 Oct 1998 | British | - |
| Claire Favier Tilston | Secretary | 15 Dec 2006 | 10 Jan 2013 | British | - |
| Colin Fletcher | Director | 5 Jun 2008 | 12 Oct 2012 | British | 63 years |
| Darren Richardson | Director | 17 Aug 2009 | 5 Nov 2012 | British | 60 years |
| David John Finnegan | Director | 4 Nov 2012 | 1 Sept 2014 | British | 73 years |
| Dyfrig Morgan James | Director | 1 May 1992 | 11 Apr 1994 | British | 72 years |
| Frederick Alan Gibson | Director | 1 May 1992 | 30 Sept 1992 | British | 80 years |
| Geoffrey John Birkett | Director | 27 Feb 2008 | 31 Mar 2008 | British | 77 years |
| Georgina Violet Crowhurst | Secretary | 15 Oct 2019 | 28 Jan 2020 | - | - |
| Gillian Evelyn Gillies | Director | 27 Feb 2008 | 6 Dec 2021 | British | 61 years |
| Graham George Lucas | Director | 1 Oct 1992 | 7 Feb 2000 | British | 77 years |
| Hugh Allen Hoather | Director | 1 Mar 1993 | 1 Sept 1998 | British | 79 years |
| Hugh Charles Etheridge | Director | 24 Sept 2001 | 31 Jul 2003 | British | 76 years |
| James Robert Meredith | Director | 8 Sept 2003 | 27 Nov 2009 | British | 66 years |
| John Dudley Taylor | Director | 1 May 1992 | 3 Jul 1992 | British | 92 years |
| John Francis Mahoney | Director | 1 May 1992 | 13 Apr 1994 | British | 80 years |
| John Hollister | Director | 1 Sept 1998 | 14 Jan 2000 | British | 71 years |
| John Michael Huntington | Director | 7 Feb 2000 | 4 Apr 2001 | British | 75 years |
| John Singleton Davies | Director | 1 Mar 1993 | 30 Jun 2000 | British | 76 years |
| Jonathan Mark Bolton | Secretary | 27 Jul 2005 | 20 Oct 2008 | British | - |
| Keith Bland | Director | 1 May 1992 | 1 Mar 1993 | British | 87 years |
| Keith Bury | Director | 1 May 1992 | 31 May 1995 | British | 92 years |
| Keith Edward Billington | Director | 27 Feb 2008 | 19 Aug 2024 | British | 89 years |
| Kevin Matthias | Director | 31 Mar 1998 | 1 Sept 1998 | British | 73 years |
| Leslie James Davidson Cassells | Director | 15 Jan 2004 | 30 Nov 2009 | British | 72 years |
| Marin Brennan Woolhouse | Secretary | 1 May 1992 | 26 Jan 1993 | British | - |
| Martin Richard Stewart | Director | 31 May 1995 | 31 Mar 1998 | British | 66 years |
| Nicholas Curtis Franklin | Secretary | 11 Apr 1994 | 31 Mar 1998 | British | - |
| Nigel Desmond Alexander Sandy | Director | 14 May 2001 | 31 Jul 2003 | British | 82 years |
| Paul Taylor | Director | 1 Dec 2009 | 1 Aug 2023 | British | 67 years |
| Phillip Wesley Burns | Director | 31 Jul 2003 | 30 Sept 2003 | British | 57 years |
| Quentin Richard Stewart | Director | 31 Jul 2003 | 30 Sept 2003 | British | 58 years |
| Robert Charles Ellis | Director | 6 Jul 1992 | 3 Feb 1995 | British | 75 years |
| Robin Edwin Tweedale | Director | 11 Apr 1994 | 31 Mar 1998 | British | 74 years |
| Ronald Carey | Director | 1 May 1992 | 1 Mar 1993 | British | 106 years |
| Ruth Catherine Prior | Director | 8 Sept 2003 | 15 Jan 2004 | British | 59 years |
| Samantha Jane Calder | Secretary | 27 Jul 2005 | 28 Sept 2006 | British | - |
| Stephen Nigel Jennings | Director | 1 Sept 1998 | 31 Jul 2003 | British | 64 years |
| Stephen Nigel Jennings | Director | 27 Feb 2008 | 11 Jun 2010 | British | 64 years |
| Steven Neville Hardman | Director | 16 Aug 2004 | 30 Apr 2008 | British | 58 years |
| Steven Neville Hardman | Secretary | 22 Jun 2004 | 16 Aug 2004 | British | - |
| Susan Upton | Director | 2 Jun 2008 | 17 Aug 2009 | British | 60 years |
| Vicente Federico Orts-llopis | Director | 1 Dec 2009 | 31 Jan 2024 | Spanish | 64 years |
| Victoria Bunton | Secretary | 3 Nov 2011 | 20 Dec 2012 | - | - |
| William Anthony Trendell | Director | 7 Feb 2000 | 24 Sept 2001 | British | 71 years |