| Adam Charles Little | Director | 18 Sept 2006 | 1 Aug 2007 | British | 75 years |
| 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 |
| Brian David Outlaw | Director | 26 Dec 1991 | 3 Oct 1996 | British | 78 years |
| Brian Michael Puffer | Director | 8 Mar 2010 | 27 Nov 2017 | British,american | 57 years |
| Brian Peevor | Secretary | 1 Apr 1994 | 31 Aug 1997 | British | - |
| Christopher Kuangcheng Gerald Eng | Secretary | 23 Mar 2009 | 30 Jun 2010 | - | - |
| Clive Warren Chambers | Director | 26 Dec 1991 | 30 Apr 1998 | British | 86 years |
| David Alexander Smith Meighan | Director | 30 Apr 1998 | 1 Apr 2003 | British | 73 years |
| Francis William Michael Starkie | Director | 18 Sept 2006 | 30 Sept 2009 | British | 77 years |
| Gary William Dirks | Director | 4 Oct 1996 | 23 Jul 2009 | Us Citizen | 75 years |
| Ian Guy Stewart Hartigan | Director | 26 Dec 1991 | 18 Aug 1993 | British | 93 years |
| James Grant Nemeth | Director | 1 Jan 2004 | 3 Aug 2005 | Us Citizen | 69 years |
| Jan Clayton Lyons | Director | 1 Jan 2017 | 27 Nov 2017 | American | 61 years |
| Jean Baptiste Michel Renard | Director | 1 Feb 2003 | 1 Aug 2006 | French | 65 years |
| John Harold Bartlett | Director | 18 Sept 2006 | 1 Jan 2016 | British | 73 years |
| John Henry Cary Gerson | Director | 1 Apr 2003 | 1 Nov 2003 | British | 81 years |
| Julian John Watts | Secretary | 26 Dec 1991 | 31 Mar 1994 | New Zealand | - |
| Katherine Anne Thomson | Director | 1 Jan 2016 | 1 Jan 2017 | British | 58 years |
| Liming Chen | Director | 1 Sept 2009 | 14 Jan 2015 | Singaporean | 66 years |
| Mark Louis Noetzel | Director | 1 Dec 2001 | 1 Feb 2003 | American | 69 years |
| Michael Allen Osborne | Director | 26 Dec 1991 | 19 May 1992 | American | 80 years |
| Paul Arthur Pearson | Director | 4 Oct 1996 | 2 Apr 1998 | British | 86 years |
| Ralph Charles Alexander | Director | 1 Mar 1999 | 1 Aug 1999 | American | 71 years |
| Robert Carl Fearnley | Director | 1 Aug 2007 | 10 Oct 2011 | British | 63 years |
| Robin Frank Newell | Director | 26 Dec 1991 | 19 May 1992 | British | 82 years |
| Roger Christopher Harrington | Director | 1 Oct 2009 | 8 Mar 2010 | British | 60 years |
| Roger Dixon Cartwright | Director | 18 Aug 1993 | 3 Oct 1996 | British | 78 years |
| Yasin Stanley Ali | Secretary | 19 Feb 2001 | 30 Jun 2010 | - | - |