| Andrew Christopher Bolter | Director | 11 Jul 2003 | 1 Dec 2005 | British | 56 years |
| Antony Lewis John Thomas | Secretary | 28 Feb 1991 | 31 Dec 2000 | British | - |
| Benjamin John Guyatt | Director | 13 Jun 2008 | 1 Jun 2011 | British | 51 years |
| Carsten Matthias Wendt | Director | 1 Dec 2016 | 6 Sept 2021 | German | 50 years |
| Christian Leclercq | Director | 2 Jun 2008 | 31 Mar 2010 | Belgian | 61 years |
| Clive Beck | Director | 19 Aug 1994 | 30 Jun 1999 | British | 89 years |
| David James Tonkin | Director | 11 Jul 2003 | 31 Jul 2004 | British | 64 years |
| David John Egan | Director | 1 Jun 2007 | 16 Jun 2008 | British | 59 years |
| David Jonathan Clarke | Director | 1 Jun 2011 | 1 Dec 2016 | British | 52 years |
| Duncan Leslie Bratt | Director | 3 Apr 1995 | 30 Jun 2000 | British | 80 years |
| Elliot John Laurie | Director | 14 Aug 2002 | 16 Jun 2008 | British | 56 years |
| Gary Charles Mcardle | Director | 18 Aug 2006 | 16 Jun 2008 | British | 66 years |
| Graham Dransfield | Director | 1 Jul 2000 | 30 Jun 2008 | British | 75 years |
| Graham Dransfield | Secretary | 10 Dec 2007 | 30 Jun 2008 | British | - |
| Ian Alan Duncan Peters | Director | 1 Jul 2000 | 11 Jul 2003 | British | 61 years |
| Ian Alan Duncan Peters | Secretary | 1 Jan 2001 | 11 Jul 2003 | British | - |
| Jack Stewart-clark | Director | 28 Feb 1991 | 30 Jun 1999 | British | 97 years |
| John Marlay | Director | 1 Jul 1999 | 31 Jan 2001 | Australian | 77 years |
| John Stephen Duthie | Director | 14 Jan 1983 | 11 Nov 1994 | British | 108 years |
| John William Leevers | Director | 28 Feb 1991 | 8 Jan 1995 | Australian | 77 years |
| Michael Alan Ogden | Director | 2 Apr 2002 | 30 Jun 2004 | British | 72 years |
| Nicholas Swift | Director | 11 Jul 2003 | 1 Jun 2007 | British | 62 years |
| Norman John Nolan | Director | 28 Feb 1991 | 31 Jul 1997 | British | 84 years |
| Paul Derek Tunnacliffe | Secretary | 11 Jul 2003 | 10 Dec 2007 | British | - |
| Peter Anthony Grayson Rawlinson | Director | 28 Feb 1991 | 30 Jun 1992 | British | 107 years |
| Peter William John Reynolds | Director | 28 Feb 1991 | 30 Jun 1999 | British | 97 years |
| Richard Antony Bruce Varcoe | Director | 1 Jul 2000 | 1 Dec 2000 | British | 67 years |
| Richard Robert Gimmler | Director | 13 Jun 2008 | 30 Dec 2009 | British | 59 years |
| Roger Thomas Virley Tyson | Secretary | 31 Jul 2008 | 10 Mar 2016 | British | - |
| Rupert Nicholas Hambro | Director | 9 Mar 1989 | 30 Jun 1999 | British | 83 years |
| Ruth Coulson | Director | 1 Dec 2005 | 20 Jun 2008 | Australian | 53 years |
| Seyda Pirinccioglu | Director | 19 Jul 2010 | 31 Aug 2013 | Turkish | 55 years |
| Simon Neil Vivian | Director | 1 Jul 2000 | 30 Jun 2003 | British | 69 years |
| Thomas Bernard Manning Holcroft | Director | 28 Feb 1991 | 30 Jan 1998 | British | 79 years |
| Warren Geoffrey Colquitt | Director | 9 Feb 1998 | 30 Jun 2000 | British | 63 years |