| Andrew Christopher Bolter | Director | 11 Jul 2003 | 1 Dec 2005 | British | 56 years |
| Antony Lewis John Thomas | Secretary | 30 Mar 1992 | 31 Dec 2000 | British | - |
| Benjamin John Guyatt | Director | 13 Jun 2008 | 1 Jun 2011 | British | 51 years |
| Christian Leclercq | Director | 2 Jun 2008 | 31 Mar 2010 | Belgian | 61 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 |
| Frank Stuart Chiswell Manson | Director | 30 Mar 1992 | 6 Jan 1993 | British | 87 years |
| Graham Dransfield | Director | 11 Jul 2003 | 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 | - |
| John William Leevers | Director | 30 Mar 1992 | 8 Jan 1995 | Australian | 77 years |
| Michael Alan Ogden | Director | 5 Mar 2002 | 30 Jun 2004 | British | 72 years |
| Nicholas Swift | Director | 11 Jul 2003 | 1 Jun 2007 | British | 62 years |
| Paul Derek Tunnacliffe | Secretary | 11 Jul 2003 | 10 Dec 2007 | British | - |
| 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 | - |
| 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 Jan 2001 | 30 Jun 2003 | British | 69 years |
| Thomas Bernard Manning Holcroft | Director | 30 Mar 1992 | 30 Jan 1998 | British | 79 years |
| Warren Geoffrey Colquitt | Director | 9 Feb 1998 | 30 Jun 2000 | British | 63 years |