| Alain Gerard Edmond Bourguignon | Director | 1 Apr 2010 | 1 Mar 2011 | French | 67 years |
| Alan Lockwood Shearer | Director | 26 Apr 1994 | 14 May 1997 | British | 87 years |
| Andrew Nash | Secretary | 30 Oct 1998 | 26 May 2000 | British | - |
| Charles Bennett Brown | Secretary | 21 Feb 1994 | 28 Apr 1994 | British | - |
| Christopher Stuart Bailey | Director | 26 Apr 1994 | 31 Dec 2004 | British | 80 years |
| Christopher Stuart Bailey | Secretary | 28 Apr 1994 | 1 Jan 1997 | British | - |
| David Paul Loosley | Director | 21 Feb 1994 | 6 May 1994 | British | 79 years |
| David Tidmarsh | Director | 28 Apr 1994 | 2 Jan 2001 | British | 81 years |
| Douglas Martin Yates | Director | 1 Oct 1994 | 8 Sept 1997 | British | 83 years |
| George William Bolsover | Director | 2 Jan 2001 | 31 Mar 2010 | British | 76 years |
| James Keith Retallack | Director | 6 Sept 2002 | 30 Jun 2011 | British | 69 years |
| James West Atherton-ham | Director | 1 Jul 2011 | 30 Apr 2019 | British | 56 years |
| John Ferguson Bowater | Director | 31 Dec 2004 | 2 Jul 2007 | British | 77 years |
| Marcus De La Poer Beresford | Director | 3 May 1994 | 8 Sept 1997 | British | 84 years |
| Mary Ford | Secretary | 26 May 2000 | 30 Mar 2012 | British | - |
| Maurice Eric Warren | Director | 3 May 1994 | 8 Sept 1997 | British | 93 years |
| Michael Eugene Hayes | Director | 28 Apr 1994 | 31 Dec 2001 | American | 90 years |
| Peter Muir Elliott | Director | 21 Feb 1994 | 6 May 1994 | British | 76 years |
| Peter William Gregory Tom | Director | 8 Sept 1997 | 31 Dec 2005 | British | 86 years |
| Richard Hawke Collins | Secretary | 1 Jan 1997 | 3 Jul 1998 | British | - |
| Richard Laurence Ham | Director | 21 Feb 1994 | 6 May 1994 | British | 72 years |
| Timothy Nicholas Grimes | Secretary | 3 Jul 1998 | 30 Oct 1998 | British | - |