| Andrew Derek Ball | Director | 1 Nov 1999 | 22 Oct 2008 | British | 63 years |
| Andrew George Sandars | Director | 30 Jan 2013 | 31 Mar 2016 | British | 56 years |
| Andrew John Milton Bester | Director | 25 Oct 2012 | 1 Sept 2017 | British | 60 years |
| Andrew Mcmurray | Director | 14 Jul 2004 | 19 Feb 2009 | British | 66 years |
| Andrew William Geczy | Director | 15 Dec 2010 | 30 Nov 2012 | American | 62 years |
| Andrew William Leach | Director | 15 Jun 2005 | 13 Feb 2009 | British | 68 years |
| Anthea Rebecca Harrison | Director | 13 Apr 1992 | 30 Oct 1992 | British | 70 years |
| Bernard John Dale | Director | 14 Apr 1997 | 10 Feb 2002 | British | 61 years |
| Candida Morley | Director | 20 Sept 2002 | 6 Mar 2013 | British | 60 years |
| Carl Edmund Wormald | Director | 19 Jan 2007 | 13 Feb 2009 | British | 56 years |
| Christopher Richard Hurley | Director | 22 Jan 2013 | 3 Feb 2021 | British | 51 years |
| Darryl Charles Eales | Director | 28 Jan 1994 | 30 Apr 2014 | British | 65 years |
| David Clarence Clarke | Director | 14 May 1992 | 29 Jan 1993 | New Zealand | 70 years |
| David Dermot Hennessey | Secretary | 21 Jun 2018 | 14 May 2020 | - | - |
| David Oliver Horne | Director | 13 Apr 1992 | 31 Dec 1992 | British | 93 years |
| Frederick Michael Peter Riding | Director | 15 Jan 1993 | 29 Dec 2003 | British | 82 years |
| Frederick William Crawley | Director | 13 Apr 1992 | 30 Jun 1992 | British | 99 years |
| Geoffrey Joseph Weaver | Director | 13 Apr 1992 | 15 Jun 1994 | British | 81 years |
| George Truett Tate | Director | 16 Jan 2004 | 5 May 2004 | American | 75 years |
| George Truett Tate | Director | 19 Jan 2007 | 6 Feb 2012 | American | 75 years |
| Grant Rostron Berry | Director | 19 Sept 2003 | 30 Sept 2008 | British | 59 years |
| Ian Clive John | Director | 13 Apr 1992 | 2 Jul 2003 | British | 71 years |
| Ian Gregory Birch | Director | 15 Jan 1993 | 31 Oct 1999 | British | 85 years |
| Ian Thomas Burns | Director | 13 Apr 1992 | 13 Apr 1993 | British | 74 years |
| John David Buddle | Director | 13 Apr 1992 | 31 Dec 1992 | British | 89 years |
| John Eamon Dillon | Director | 18 Nov 1996 | 6 Jul 1998 | British | 65 years |
| John Frederick Swarbrick | Director | 3 Mar 2000 | 24 Feb 2009 | British | 67 years |
| John Martin Handley | Director | 1 Jan 1999 | 30 Sept 2005 | British | 63 years |
| Jonathan David Simm | Director | 12 Jan 2002 | 18 Jul 2006 | British | 60 years |
| Julian Edward Carr | Director | 28 Feb 1997 | 18 Sept 2003 | British | 62 years |
| Keith George Carpenter | Director | 13 Apr 1992 | 31 Aug 1993 | British | 82 years |
| Keith George Carpenter | Director | 13 Apr 1994 | 31 Mar 2000 | British | 82 years |
| Kevan Paul Leggett | Director | 4 May 2006 | 22 Aug 2011 | British | 61 years |
| Kevin Rohan Taylor | Secretary | 7 Jan 2014 | 23 Mar 2015 | - | - |
| Marc-john Boston | Secretary | 15 Dec 2010 | 7 Jan 2014 | - | - |
| Mark George Culmer | Director | 21 Jun 2018 | 1 Aug 2019 | British | 63 years |
| Mark Stephen Freer | Director | 16 Sept 2005 | 10 Jul 2008 | British | 61 years |
| Martin John Draper | Director | 9 Dec 2002 | 31 Dec 2021 | British | 61 years |
| Michael Roger Hatcher | Secretary | 13 Apr 1992 | 25 Jul 1994 | British | - |
| Michael William Joseph | Director | 13 Apr 1992 | 15 Nov 2006 | British | 69 years |
| Neville Hugh Mays | Director | 15 Jan 1993 | 31 Dec 1993 | British | 88 years |
| Nicholas Andrew William Bacon | Director | 1 Apr 1996 | 13 Feb 2009 | British | 64 years |
| Nicholas William Jolliffe | Director | 1 Apr 1998 | 28 May 1999 | British | 67 years |
| Patrick Elborough Sellers | Director | 28 May 1992 | 31 Dec 2014 | British | 66 years |
| Paul Gittins | Secretary | 23 Mar 2015 | 21 Jun 2018 | - | - |
| Paul Gregorius Brown | Director | 15 Jan 1993 | 21 Dec 1995 | British | 83 years |
| Paul Thomas Johnson | Director | 19 Jan 2005 | 17 Feb 2009 | British | 56 years |
| Peter John Sutton Brooks | Director | 20 Mar 2009 | 28 Feb 2011 | British | 68 years |
| Philip Arthur Evans | Director | 13 Apr 1992 | 31 May 1996 | British | 83 years |
| Ronald Hollidge | Director | 13 Apr 1992 | 31 Jan 1995 | British | 81 years |
| Simon Joseph Dempsey | Director | 11 Jan 2002 | 30 Jun 2006 | United Kingdom | 62 years |
| Stephen John Hopkins | Secretary | 25 Jul 1994 | 28 Feb 2010 | British | - |
| Steven Alexander Anderson Carle | Director | 20 Sept 2002 | 23 Feb 2009 | British | 56 years |
| Stuart Michael Veale | Director | 1 Apr 1996 | 10 Feb 2002 | British | 66 years |
| Stuart Rhodes | Director | 13 Apr 1992 | 29 Apr 2005 | British | 77 years |
| Timothy Bahram Neville Farazmand | Director | 30 Oct 2006 | 16 Feb 2009 | British | 65 years |
| Tony Nash | Director | 1 Apr 1998 | 17 Jan 2005 | British | 60 years |