| Alan James Murray | Director | 6 May 1993 | 29 Mar 1995 | British | 73 years |
| Alastair Grant Rodger Shannon | Director | 16 Jul 1991 | 20 Sept 1993 | British | 80 years |
| Alastair Grant Rodger Shannon | Secretary | 16 Jul 1991 | 30 Sept 1993 | British | - |
| Amanda Dawn Lancaster | Secretary | 15 May 2002 | 28 Jul 2006 | British | - |
| Andrew Robert Hornby | Director | 1 Sept 1991 | 30 Sept 1993 | British | 71 years |
| Anthony Ross Cotton | Director | 11 Jan 1943 | 4 Nov 1993 | British | 83 years |
| Benjamin John Guyatt | Director | 24 Jun 2011 | 1 Sept 2012 | British | 51 years |
| Benjamin John Guyatt | Director | 1 Mar 2014 | 1 Sept 2014 | British | 51 years |
| Brian Robertson Simister | Secretary | 1 Apr 1994 | 10 Jul 1995 | British | - |
| Carsten Matthias Wendt | Director | 1 Dec 2016 | 23 Nov 2021 | German | 50 years |
| Charles Edward Denman | Director | 4 Jan 2005 | 24 Dec 2008 | British | 80 years |
| Christian Leclercq | Director | 2 Jun 2008 | 31 Mar 2010 | Belgian | 61 years |
| Daniel Hugues Gauthier | Director | 30 Jul 2009 | 31 Mar 2016 | Belgian | 69 years |
| Daniel John Cooper | Director | 1 Jan 2016 | 31 Jan 2019 | Australian | 56 years |
| Darren Peter Rix | Director | 31 Oct 2012 | 28 Feb 2014 | British | 43 years |
| Darren Peter Rix | Director | 2 Sept 2014 | 29 May 2015 | British | 43 years |
| David Graham | Director | 16 Jul 1991 | 7 Jan 1991 | British | 78 years |
| David John Lepla | Director | 1 Oct 1997 | 30 Jan 2004 | British | 82 years |
| David John Szymanski | Director | 4 Jan 1999 | 30 Nov 2009 | British | 72 years |
| David Jonathan Clarke | Director | 12 Sept 2013 | 1 Dec 2016 | British | 52 years |
| David Terrance Walters | Director | 14 Sept 1995 | 30 Jun 2003 | British | 83 years |
| Gareth Wynford Lewis Roberts | Director | 20 Jun 1994 | 7 Nov 1997 | British | 78 years |
| Gerard Feenan | Director | 1 Jan 2009 | 31 Dec 2011 | British | 74 years |
| Graham Dransfield | Director | 28 Jul 2006 | 30 Jun 2008 | British | 75 years |
| Graham Dransfield | Secretary | 10 Dec 2007 | 30 Jun 2008 | British | - |
| Hansjorg Adrian Haefeli | Director | 1 Dec 1994 | 19 Dec 1997 | Swiss | 68 years |
| Ian Alan Duncan Peters | Director | 28 Jul 2006 | 23 Jan 2008 | British | 61 years |
| James Alexander Claydon | Director | 30 Nov 2009 | 31 Dec 2019 | British | 66 years |
| Jane Margaret Gwillim | Secretary | 20 Sept 1993 | 31 Mar 1994 | British | - |
| John Francis Stoker | Director | 1 Oct 1991 | 22 Dec 1999 | British | 76 years |
| John Godbert | Director | 29 May 2015 | 30 Nov 2020 | British | 64 years |
| Jonathan David Cook | Director | 13 Jun 2008 | 13 Jun 2008 | British | 49 years |
| Jonathan David Cook | Director | 1 Jan 2009 | 17 May 2011 | British | 49 years |
| Jonathan Peter Morrish | Director | 4 Jan 2005 | 31 Oct 2007 | British | 56 years |
| Keith Shankland | Director | 30 Jun 2003 | 24 Dec 2008 | British | 76 years |
| Kevin George Seager | Director | 16 Jul 1991 | 30 Sept 1994 | British | 79 years |
| Leonard Watson Jones | Director | 16 Jul 1991 | 1 Oct 1997 | British | 84 years |
| Leslie Thomas Scales | Director | 14 Sept 1995 | 11 Jan 1999 | British | 89 years |
| Lynda Ann Blaxill | Secretary | 22 Nov 1996 | 1 Aug 1999 | British | - |
| Matthew Richard Joseph Clay | Director | 25 Feb 2013 | 1 Sept 2014 | British | 61 years |
| Michael Philip Lean | Director | 13 Jan 1998 | 15 May 2002 | British | 71 years |
| Patrick Charles Furr | Director | 1 Oct 1997 | 4 Jan 1999 | British | 68 years |
| Patrick Joseph O'shea | Director | 1 Feb 2008 | 31 Dec 2015 | British | 68 years |
| Paul Derek Tunnacliffe | Secretary | 28 Jul 2006 | 10 Dec 2007 | British | - |
| Peter John Faulkner | Director | 22 Dec 1997 | 15 May 2002 | British | 75 years |
| Philip Michael Rose | Director | 16 Jul 1991 | 27 Apr 1994 | British | 90 years |
| Ralph Dominik Von Achten | Director | 2 Jun 2008 | 31 Dec 2008 | German | 61 years |
| Richard Craig Manning | Director | 8 Apr 1994 | 15 May 2002 | British | 74 years |
| Richard Robert Gimmler | Director | 1 Oct 2005 | 2 Jun 2008 | British | 59 years |
| Robert Donnelly | Director | 1 May 2007 | 30 Jun 2008 | British | 64 years |
| Robert Ian Menzies-gow | Director | 6 May 1993 | 31 Jul 1996 | British | 84 years |
| Robert Wood | Director | 15 May 2002 | 30 Sept 2005 | British | 60 years |
| Roger Thomas Virley Tyson | Secretary | 31 Jul 2008 | 10 Mar 2016 | British | - |
| Seyda Pirinccioglu | Director | 19 Jul 2010 | 31 Aug 2013 | Turkish | 55 years |
| Stephen Richard Harrison | Director | 28 Feb 2007 | 29 Feb 2008 | British | 58 years |
| Stephen Richard Harrison | Director | 1 Sept 2012 | 1 Sept 2014 | British | 58 years |
| Tina Yvonne Porter | Secretary | 10 Jul 1995 | 22 Nov 1996 | British | - |
| Trevor Poole | Director | 4 Jan 2005 | 1 May 2007 | British | 71 years |
| Wendy Jane Trott | Director | 30 Jun 2003 | 24 Dec 2008 | British | 60 years |
| Wendy Jane Trott | Secretary | 1 Aug 1999 | 15 May 2002 | British | - |