| Alan Edward Moore | Director | 1 Aug 1998 | 16 Apr 2003 | British | 89 years |
| Alan Robert Brindley | Director | 13 Aug 2015 | 7 Oct 2016 | British | 58 years |
| Alasdair Bruce Lenman | Director | 1 Mar 2010 | 7 Sept 2012 | British | 56 years |
| Alastair Ross Goobey | Director | 1 Aug 1995 | 31 Dec 1997 | British | 80 years |
| Andrew Henry Longhurst | Director | 21 Jul 1995 | 15 Apr 1998 | British | 86 years |
| Angela Lockwood | Secretary | 25 Mar 2010 | 25 Nov 2011 | - | - |
| Carlton David Howell Blackshaw | Director | 5 Apr 1992 | 1 Jun 1994 | British | 85 years |
| Christopher Gowland | Director | 30 Oct 2015 | 10 Jul 2023 | British | 48 years |
| Christopher Malcolm Smyth | Secretary | 1 Jul 2002 | 25 Mar 2010 | British | - |
| Colin Walsh | Director | 30 Mar 2011 | 30 Sept 2011 | United States | 57 years |
| Daniel John Watkins | Director | 23 Nov 2009 | 28 Feb 2010 | British | 63 years |
| Darren Scott Pope | Director | 1 May 2006 | 22 Mar 2010 | British | 60 years |
| David Jonathan Bennett | Director | 21 Jul 1995 | 1 Nov 1996 | British | 63 years |
| David Peter Pritchard | Director | 1 May 2003 | 5 May 2005 | British | 81 years |
| Donald Christopher Jones | Secretary | 21 Jul 1995 | 1 Nov 1995 | British | - |
| Donald Turner | Director | 1 Aug 1995 | 28 Feb 2002 | British | 93 years |
| Douglas Frederick Strachan | Director | 1 Aug 1995 | 28 Feb 2002 | British | 92 years |
| Eric Swainson | Director | 1 Aug 1995 | 15 Apr 1997 | British | 99 years |
| Geoffrey Michael Williams | Secretary | 1 Nov 1995 | 30 Jun 2002 | British | - |
| Godfrey Elliott Tromans | Director | 5 Apr 1992 | 1 Jun 1994 | British | 84 years |
| Hans-wolfgang Main | Secretary | 3 Jan 1995 | 21 Jul 1995 | British | - |
| Iain Donald Cheyne | Director | 7 Jun 1994 | 21 Jul 1995 | British | 83 years |
| John Neil Maltby | Director | 14 Aug 2008 | 23 Nov 2009 | British | 63 years |
| John Newton Bays | Director | 21 Jul 1995 | 28 Feb 2002 | British | 83 years |
| John Peter Wood | Director | 1 Aug 1995 | 28 Feb 2002 | British | 92 years |
| John Thomas Davies | Director | 1 Aug 1995 | 31 Jul 1998 | British | 92 years |
| Jonathan Charles Pain | Director | 1 May 2003 | 31 Dec 2007 | British | 68 years |
| Joy Ann Griffiths | Director | 12 Jun 2007 | 31 Mar 2009 | New Zealand | 69 years |
| Karen Louise Hewitt | Director | 5 Apr 1992 | 21 Jul 1995 | British | 67 years |
| Mark David Goodship | Director | 29 Jun 2023 | 2 Feb 2024 | British | 50 years |
| Mark James Gibbard | Director | 1 Feb 1997 | 30 Nov 2005 | British | 64 years |
| Michael Frederick Mitchell | Director | 1 Jan 2004 | 24 Apr 2008 | British | 72 years |
| Michael John Kula | Director | 1 Mar 2010 | 30 Mar 2011 | American | 67 years |
| Michael Roger Hatcher | Secretary | 5 Apr 1992 | 20 Jul 1994 | British | - |
| Nicholas John William Hale | Director | 1 Feb 1997 | 31 Aug 2006 | British | 77 years |
| Patrick Anthony Masserano | Director | 8 Oct 2012 | 31 Dec 2013 | American | 50 years |
| Paul Gittins | Secretary | 25 Nov 2011 | 31 Jul 2024 | - | - |
| Paul William Baker | Director | 14 Aug 2008 | 1 Sept 2009 | British | 69 years |
| Peter David Minchin | Director | 5 Apr 1992 | 26 Jan 1994 | British | 93 years |
| Philip Leslie Warner | Director | 1 Aug 1995 | 17 Apr 1996 | British | 89 years |
| Ricky David Hunkin | Director | 2 Apr 2004 | 9 Sept 2005 | British | 63 years |
| Robert Andrew Purdy | Director | 8 Oct 2012 | 8 Aug 2014 | British | 53 years |
| Robert Anthony Douglas Froy | Director | 5 Apr 1992 | 21 Jul 1995 | British | 89 years |
| Robert William Fletcher | Director | 3 Oct 2014 | 9 Aug 2023 | British | 61 years |
| Roger Francis Burden | Director | 21 Jul 1995 | 30 Apr 2003 | British | 79 years |
| Roger Francis Burden | Director | 1 Jun 2003 | 25 Oct 2004 | British | 79 years |
| Roger Malvern | Director | 21 Jul 1995 | 31 Dec 2003 | British | 77 years |
| Stephen John Hopkins | Secretary | 20 Jul 1994 | 3 Jan 1995 | British | - |
| Stephen John Noakes | Director | 30 Sept 2011 | 30 Oct 2015 | British | 63 years |
| Susan Elizabeth Harris | Director | 7 Jan 2008 | 20 May 2009 | British | 64 years |
| Timothy Alastair Edward Brookes | Director | 1 Aug 1995 | 28 Feb 2002 | English | 76 years |