| Andrea Margaret Thomas | Secretary | 21 Jul 2008 | 23 Mar 2009 | Other | - |
| Andrew Stewart Mackenzie | Director | 1 Feb 2004 | 31 Jul 2004 | British | 70 years |
| Benedict John Spurway Mathews | Director | 17 Dec 2019 | 3 Nov 2023 | British | 59 years |
| Brian Michael Puffer | Director | 1 Jan 2010 | 11 Apr 2018 | British,american | 57 years |
| Brian Peevor | Secretary | 15 Jun 1993 | 30 Jul 1993 | British | - |
| Brian Peevor | Secretary | 1 May 1994 | 9 Sept 1997 | British | - |
| Carol Ann Gateson | Secretary | 30 Jul 1992 | 14 Jun 1993 | British | - |
| Christopher Kuangcheng Gerald Eng | Secretary | 23 Mar 2009 | 30 Jun 2010 | Other | - |
| Colin Peter Saunders | Director | 1 May 1994 | 1 Dec 2004 | British | 78 years |
| Dawn Noel | Secretary | 1 Feb 2006 | 3 Nov 2006 | British | - |
| Derek Kenneth Macalpine | Director | 1 Jan 1997 | 30 Dec 1998 | British | 74 years |
| Gordon Rennie Souter | Director | 1 Apr 2002 | 1 Feb 2004 | British | 73 years |
| Guy Moeyens | Director | 1 Aug 2006 | 1 Dec 2007 | Belgian | 61 years |
| Helen Jane Stanley | Secretary | 10 Sept 1997 | 19 Feb 2001 | British | - |
| Iain Fraser Macdonald | Director | 19 Jan 2009 | 31 Dec 2009 | British | 69 years |
| Ian Courtenay Harrison | Director | 1 Jan 1997 | 1 Mar 1999 | British | 70 years |
| Janet Elvidge | Secretary | 3 Nov 2006 | 21 Jul 2008 | Other | - |
| Jens Bertelsen | Director | 11 Apr 2018 | 17 Dec 2019 | British | 67 years |
| John Harold Bartlett | Director | 1 Jan 2016 | 31 Dec 2017 | British | 73 years |
| John Keith Robinson | Director | 1 May 1993 | 31 Dec 1996 | Us Citizen | 85 years |
| Martin Elliott | Director | 30 Jul 1992 | 31 Mar 2003 | British | 82 years |
| Martin Hawkrigg | Director | 30 Jul 1992 | 31 Dec 1996 | British | 79 years |
| Michael Ian Bulman | Director | 30 Jul 1992 | 11 Sept 1992 | British | 76 years |
| Michael Ronald Levitton | Director | 30 Jul 1992 | 30 Apr 1994 | British | 87 years |
| Michael Ronald Levitton | Secretary | 15 Jun 1993 | 30 Apr 1994 | British | - |
| Nicholas Reginald Elmslie | Director | 1 Dec 2004 | 1 Aug 2006 | British | 69 years |
| Paul Arthur Pearson | Director | 30 Jul 1992 | 30 Apr 1993 | British | 86 years |
| Paul Dejonckheere | Director | 1 Mar 2001 | 30 Dec 2001 | Belgian | 69 years |
| Robin William Mcgill | Director | 31 Dec 1998 | 1 Mar 2001 | British | 71 years |
| Ronald Melvyn Stott | Director | 1 Sept 2004 | 1 Jan 2016 | British | 70 years |
| Yasin Stanley Ali | Secretary | 19 Feb 2001 | 30 Jun 2010 | Other | - |