| Aderemi Ladega | Secretary | 11 Apr 2005 | 30 Jun 2010 | British | - |
| Andrea Margaret Thomas | Secretary | 1 Sept 1997 | 11 Apr 2005 | Other | - |
| Andrew Royle Graham | Director | 1 Aug 2006 | 30 Apr 2009 | British | 71 years |
| Anna Cheng Catalano | Director | 1 Aug 1999 | 1 Dec 2001 | Us Citizen | 67 years |
| Anneli Groth Frederiksen | Director | 25 Jun 2019 | 31 Jan 2021 | Danish | 56 years |
| Brian Michael Puffer | Director | 1 Jan 2010 | 6 Feb 2018 | British,american | 57 years |
| Brian Peevor | Secretary | 9 Feb 1994 | 31 Aug 1997 | British | - |
| Christopher Kuangcheng Gerald Eng | Secretary | 23 Mar 2009 | 30 Jun 2010 | - | - |
| David Hugh Walton Payne | Director | 1 Jul 1993 | 1 Dec 1997 | British | 84 years |
| David Hulf | Director | 1 Dec 2002 | 30 Dec 2004 | British | 76 years |
| David Swaine | Director | 30 Jan 2021 | 30 Nov 2022 | British | 52 years |
| Gillian Elizabeth Young | Secretary | 16 Apr 1992 | 9 Feb 1994 | British | - |
| Henry John Hawkshaw | Director | 16 Apr 1992 | 9 Dec 1992 | British | 85 years |
| Iain Fraser Macdonald | Director | 30 Dec 2004 | 31 Dec 2009 | British | 69 years |
| Jean Baptiste Michel Renard | Director | 1 Feb 2003 | 1 Aug 2006 | French | 65 years |
| John Burgoyne Wade | Director | 16 Apr 1993 | 16 Apr 1995 | Australian | 89 years |
| John Graham Mumford | Director | 16 Apr 1992 | 27 Jul 1992 | British | 78 years |
| John Harold Bartlett | Director | 3 Jun 2011 | 27 Feb 2012 | British | 73 years |
| Leslie Atkinson | Director | 9 Dec 1992 | 16 Apr 1993 | British | 82 years |
| Mark Louis Noetzel | Director | 1 Dec 2001 | 1 Feb 2003 | American | 69 years |
| Ralph Charles Alexander | Director | 8 Dec 1997 | 1 Aug 1999 | American | 71 years |
| Richard Anthony William Yvanovich | Director | 6 Jan 1993 | 16 Apr 1993 | British | 64 years |
| Richard Anthony William Yvanovich | Director | 16 Apr 1994 | 31 Oct 1994 | British | 64 years |
| Roger Dixon Cartwright | Director | 27 Jul 1992 | 1 Dec 2002 | British | 78 years |
| Sandra Jean Macrae | Director | 27 Feb 2012 | 25 Jun 2019 | British | 63 years |
| Yasin Stanley Ali | Secretary | 19 Feb 2001 | 30 Jun 2010 | - | - |