| Alastair George Angus Morrison | Director | 18 May 1992 | 11 Dec 1998 | British | 84 years |
| Celine Arlette Virginie Barroche | Secretary | 9 Dec 2010 | 31 Jan 2016 | - | - |
| Christopher David Beese | Director | 25 Nov 2003 | 9 Apr 2009 | British | 71 years |
| Christopher David Beese | Secretary | 11 Oct 1998 | 3 Feb 2004 | British | - |
| Claire Michelle Teague | Secretary | 3 Feb 2004 | 27 Jun 2008 | British | - |
| David John Seaton | Director | 2 Aug 1999 | 26 Nov 2007 | British | 66 years |
| Eric Walter Rothbarth | Director | 13 Oct 1998 | 2 Aug 1999 | Dutch | 71 years |
| Gordon Thomas Riddell Birdwood | Secretary | 1 Oct 1997 | 13 Oct 1998 | British | - |
| Himanshu Haridas Raja | Director | 28 Feb 2014 | 1 Oct 2016 | British | 61 years |
| Jerome Hoffman | Director | 25 Nov 2003 | 14 Jul 2006 | American | 85 years |
| John Randolph Hustler | Director | 1 Feb 1996 | 31 Jul 1996 | British | 80 years |
| John Randolph Hustler | Secretary | 1 Feb 1996 | 16 Apr 1997 | British | - |
| Jonathan Spiller | Director | 13 Oct 1998 | 25 Feb 2000 | British | 75 years |
| Lord Bethell | Director | 31 Jul 1996 | 21 Sept 1998 | British | 76 years |
| Martin John Brayshaw | Secretary | 16 Apr 1997 | 1 Oct 1997 | British | - |
| Matthew Edward Stanley Brabin | Director | 14 Jul 2006 | 13 Feb 2009 | British | 61 years |
| Matthew Gordon Philip Davies | Director | 30 Jun 2009 | 13 Aug 2010 | British | 52 years |
| Nigel Anthony Billingham | Director | 13 Feb 2009 | 9 Dec 2010 | British | 70 years |
| Noel Albert Philp | Director | 6 Sept 2002 | 30 Jun 2009 | New Zealander | 77 years |
| Peter James Isaacs | Secretary | 18 May 1992 | 31 Dec 1995 | British | - |
| Peter Vincent David | Director | 9 Dec 2010 | 31 Dec 2016 | British | 68 years |
| Stephen John Loffler | Director | 5 May 1999 | 6 Sept 2002 | British | 73 years |
| Thomas Boyatt | Director | 18 May 1992 | 31 Jan 1996 | American | 93 years |
| Vaishali Jagdish Patel | Secretary | 30 Jul 2008 | 9 Dec 2010 | British | - |