| Alain Gerard Edmond Bourguignon | Director | 1 Apr 2010 | 1 Mar 2011 | French | 67 years |
| Alan Lockwood Shearer | Director | 26 Apr 1994 | 23 Jun 1997 | British | 87 years |
| Andrew Nash | Secretary | 30 Oct 1998 | 26 May 2000 | British | - |
| Charles Bennett Brown | Secretary | 13 Dec 1993 | 31 May 1994 | British | - |
| Christopher Stuart Bailey | Director | 26 Apr 1994 | 31 Dec 2004 | British | 80 years |
| David Paul Loosley | Director | 13 Dec 1993 | 31 May 1994 | British | 79 years |
| David Tidmarsh | Director | 1 Jun 1994 | 2 Jan 2001 | British | 81 years |
| George William Bolsover | Director | 2 Jan 2001 | 31 Mar 2010 | British | 76 years |
| James Keith Retallack | Director | 2 Jul 2007 | 30 Jun 2011 | British | 69 years |
| James West Atherton-ham | Director | 1 Jul 2011 | 30 Apr 2019 | British | 56 years |
| Joan Simpson | Secretary | 1 Jun 1994 | 16 Jan 1997 | English | - |
| John Ferguson Bowater | Director | 31 Dec 2004 | 2 Jul 2007 | British | 77 years |
| Mary Ford | Secretary | 26 May 2000 | 30 Mar 2012 | British | - |
| Peter Muir Elliott | Director | 13 Dec 1993 | 31 May 1994 | British | 76 years |
| Peter William Gregory Tom | Director | 23 Jun 1997 | 31 Dec 2005 | British | 86 years |
| Richard Hawke Collins | Secretary | 16 Jan 1997 | 3 Jul 1998 | British | - |
| Richard Laurence Ham | Director | 13 Dec 1993 | 31 May 1994 | British | 72 years |
| Timothy Nicholas Grimes | Secretary | 3 Jul 1998 | 30 Oct 1998 | British | - |