| Benjamin John Guyatt | Director | 13 Jun 2008 | 1 Jun 2011 | British | 51 years |
| Carsten Matthias Wendt | Director | 1 Dec 2016 | 9 Sept 2021 | German | 50 years |
| Charles William Hamshaw Thomas | Secretary | 2 Dec 1991 | 25 Mar 1994 | British | - |
| Christian Leclercq | Director | 1 Sept 2008 | 31 Mar 2010 | Belgian | 61 years |
| Colin Kirkby | Director | 6 Jan 1992 | 12 May 1992 | British | 79 years |
| Cyril Alan Gerald Ellis | Secretary | 6 Jan 1992 | 2 Dec 1991 | British | - |
| Cyril John Phillips | Director | 6 Jan 1992 | 31 Jan 1998 | British | 84 years |
| David Jonathan Clarke | Director | 1 Jun 2011 | 1 Dec 2016 | British | 52 years |
| Gordon Booth | Director | 6 Jan 1992 | 12 Sept 2007 | British | 105 years |
| Graham Dransfield | Director | 13 Oct 1999 | 30 Jun 2008 | British | 75 years |
| Graham Dransfield | Secretary | 10 Dec 2007 | 30 Jun 2008 | British | - |
| Ivor Broom | Director | 6 Jan 1992 | 15 Apr 1992 | British | 106 years |
| John Wilfred Sword Fletcher | Director | 6 Jan 1992 | 12 Sept 2007 | British | 86 years |
| Joseph Patrick O'neill | Director | 6 Jan 1992 | 21 Apr 1992 | British | 99 years |
| Martin Charles Murray | Director | 5 Jan 1996 | 31 Jan 1997 | British | 71 years |
| Martyn Booth | Director | 6 Jan 1992 | 29 Apr 1994 | British | 76 years |
| Paul Derek Tunnacliffe | Secretary | 31 Jan 1997 | 10 Dec 2007 | British | - |
| Paul Spencer | Director | 6 Jan 1992 | 5 Jan 1996 | British | 76 years |
| Richard Robert Gimmler | Director | 1 Sept 2008 | 30 Dec 2009 | British | 59 years |
| Roger Thomas Virley Tyson | Secretary | 31 Jul 2008 | 10 Mar 2016 | British | - |
| Roger Thomas Virley Tyson | Secretary | 25 Mar 1994 | 31 Jan 1997 | British | - |
| Samantha Jane Hurrell | Director | 31 Jan 1997 | 13 Oct 1999 | British | 63 years |
| Seyda Pirinccioglu | Director | 19 Jul 2010 | 31 Aug 2013 | Turkish | 55 years |
| William Allan Davis | Director | 6 Jan 1992 | 14 Aug 1994 | British | 105 years |