| Alan George Ace | Director | 9 Jun 1989 | 31 Dec 1989 | British | 89 years |
| Alan Henry Haywood | Director | 19 Nov 2003 | 1 Sept 2005 | British | 60 years |
| Allan Walter Baker | Director | 9 Jun 1989 | 14 Nov 1989 | British | 98 years |
| Andrea Margaret Thomas | Secretary | 21 Jul 2008 | 23 Mar 2009 | Other | - |
| Anne Cecille Quinn | Director | 4 Sept 1997 | 1 Feb 2000 | New Zealander | 75 years |
| Arturo Lopez Vinuesa | Director | 10 Jun 2013 | 1 Nov 2021 | Spanish | 64 years |
| Camille Drummond | Director | 24 Oct 2013 | 21 Jan 2015 | British | 58 years |
| Christopher Kuangcheng Gerald Eng | Secretary | 23 Mar 2009 | 30 Jun 2010 | Other | - |
| Christopher Shaw Gibson Smith | Director | 1 Jan 1990 | 15 Jun 1992 | British | 81 years |
| Colin Robert Goodall | Director | 15 Jun 1992 | 1 Jan 1995 | British | 82 years |
| Daniele Bianchi | Director | 11 Nov 2011 | 10 Jun 2013 | Italian | 69 years |
| David Stephen Fitzsimmons | Director | 1 May 2003 | 30 Dec 2004 | British | 71 years |
| Dawn Noel | Secretary | 1 Feb 2006 | 3 Nov 2006 | British | - |
| Dominic Wood | Director | 21 Jan 2015 | 5 Oct 2016 | British | 50 years |
| Fiona Anne Macleod | Director | 1 Jan 2003 | 19 Nov 2003 | British | 59 years |
| Gary Christian Greve | Director | 18 Oct 1996 | 1 Jul 1997 | Us Citizen | 77 years |
| Godfrey Richard Bradley | Director | 31 May 1993 | 1 Apr 1994 | British | 79 years |
| Helen Jane Stanley | Secretary | 1 Feb 2000 | 19 Feb 2001 | British | - |
| Janet Elvidge | Secretary | 3 Nov 2006 | 21 Jul 2008 | Other | - |
| John Mogford | Director | 1 May 2003 | 1 Mar 2005 | British | 73 years |
| Nicholas Charles Coleman | Director | 18 Oct 1996 | 1 Jan 2003 | British | 74 years |
| Nigel Philip Preece | Director | 18 Feb 1997 | 30 Dec 1999 | British | 70 years |
| Richard David Field | Director | 11 Nov 2011 | 11 Oct 2013 | British | 57 years |
| Richard Wheatley | Director | 10 Jan 2013 | 26 Jan 2016 | British | 53 years |
| Robert Cameron Cumming | Secretary | 9 Jun 1989 | 1 Feb 2000 | British | - |
| Robin Dale Morris | Director | 14 Nov 1989 | 31 May 1993 | British | 80 years |
| Simon Philip Cattle | Director | 30 Nov 2006 | 10 Jan 2013 | British | 68 years |
| Stephen Westwell | Director | 1 Mar 2005 | 1 Sept 2007 | British | 68 years |
| Steven Kyle Welch | Director | 1 Feb 2000 | 1 May 2003 | Us Citizen | 75 years |
| Steven Weston | Director | 1 Apr 1994 | 31 Aug 1997 | British | 73 years |
| Thomas Walter Arthur Wright | Director | 1 Jan 1995 | 18 Oct 1996 | British | 75 years |
| Wilhelmus Petrus Martinus Maria Donkers | Director | 1 Sept 2005 | 30 Nov 2006 | Dutch | 64 years |
| Yasin Stanley Ali | Secretary | 19 Feb 2001 | 1 Feb 2006 | Other | - |