| Allan Frank Harrison | Director | 21 Sept 1991 | 6 Dec 1991 | British | 83 years |
| Amy Elizabeth Abraham | Director | 1 Feb 2004 | 1 Apr 2006 | Us Citizen | 58 years |
| Andrea Margaret Thomas | Secretary | 1 Sept 1997 | 1 May 2003 | Other | - |
| Andrea Margaret Thomas | Secretary | 21 Jul 2008 | 23 Mar 2009 | Other | - |
| Anthony Michael Ryde | Director | 6 Dec 1991 | 31 Dec 1993 | British | 81 years |
| Archibald Bruce Ballantine | Director | 1 May 1992 | 1 Aug 1992 | British | 84 years |
| Brian Peevor | Secretary | 9 Feb 1994 | 31 Aug 1997 | British | - |
| Christopher Kuangcheng Gerald Eng | Secretary | 23 Mar 2009 | 30 Jun 2010 | Other | - |
| David Graham Hamer | Director | 6 Dec 1991 | 14 Jul 1992 | British | 84 years |
| David William Mccammond | Director | 25 Jul 1995 | 7 Jul 1997 | British | 74 years |
| Dawn Noel | Secretary | 1 Feb 2006 | 3 Nov 2006 | British | - |
| Emma Louise Williamson | Director | 1 Jan 2008 | 1 Oct 2008 | British | 57 years |
| Gillian Elizabeth Young | Secretary | 21 Sept 1991 | 9 Feb 1994 | British | - |
| Gordon George Balmer | Director | 1 Dec 2004 | 31 Dec 2009 | British | 68 years |
| Ian Donald Palliser | Director | 6 Dec 1991 | 30 May 1994 | New Zealander | 72 years |
| Janet Elizabeth Ashdown | Director | 1 Oct 2008 | 1 Sept 2009 | British | 67 years |
| Janet Elvidge | Secretary | 3 Nov 2006 | 21 Jul 2008 | Other | - |
| Johannes Pieter Oversier | Director | 1 Jun 2002 | 1 Dec 2004 | Dutch | 70 years |
| John Andrew Toner | Director | 21 Sept 1991 | 6 Dec 1991 | British | 84 years |
| John Frederick Rogers | Director | 21 Sept 1991 | 6 Dec 1991 | British | 85 years |
| Jonathan Samuel Booth | Director | 1 Dec 1997 | 1 May 2000 | British | 65 years |
| Jurgen Anthonius Hendrikus Bloemers | Director | 1 May 2008 | 1 Jul 2011 | Dutch | 61 years |
| Jurgen Anthonius Hendrikus Bloemers | Director | 1 May 2000 | 1 Jun 2002 | Dutch | 61 years |
| Keith Cope | Director | 8 Jul 1997 | 1 Feb 2004 | British | 74 years |
| Keith Crichton | Director | 30 May 1994 | 25 Jul 1995 | British | 70 years |
| Michael Peter Jeremy Tunstall | Director | 14 Jul 1992 | 7 Jul 1997 | British | 71 years |
| Neale Andrew Smither | Director | 1 Sept 2009 | 1 Sept 2015 | British | 62 years |
| Paul Chevalley De Rivaz | Director | 6 Dec 1991 | 1 May 1992 | British | 77 years |
| Robert Mark Waddington | Director | 1 Apr 2006 | 1 Jan 2008 | British | 61 years |
| Sandra Dawn Ling | Director | 1 Apr 2006 | 1 May 2008 | British | 63 years |
| Sunil Kumar Kakar | Director | 30 May 1994 | 30 Nov 1997 | British | 70 years |
| Timothy Phillip Livsey | Director | 8 Jul 1997 | 30 Apr 1999 | British | 65 years |
| Yasin Stanley Ali | Secretary | 1 May 2003 | 1 Feb 2006 | Other | - |