| Alain Gerard Edmond Bourguignon | Director | 1 Apr 2010 | 1 Mar 2011 | French | 67 years |
| Charles David Anderson Jones | Director | 22 Jun 1991 | 24 May 2005 | British | 87 years |
| Colin Richard Jenkins | Director | 14 Apr 2004 | 30 Sept 2011 | British | 64 years |
| David James Ivo Coulson | Director | 22 Jun 1991 | 14 Apr 2004 | British | 63 years |
| George William Bolsover | Director | 14 Apr 2004 | 31 Mar 2010 | British | 76 years |
| Harvey Edward Marritt | Secretary | 22 Jun 1991 | 5 Jun 1992 | British | - |
| Harvey Edward Marritt | Secretary | 11 Nov 1992 | 28 Feb 1995 | British | - |
| Herbert David Carr Steward | Secretary | 28 Feb 1995 | 14 Apr 2004 | British | - |
| James West Atherton-ham | Director | 20 Dec 2012 | 30 Apr 2019 | British | 56 years |
| John Ferguson Bowater | Director | 14 Dec 2006 | 31 Dec 2022 | British | 77 years |
| Keith Barker | Secretary | 14 Apr 2004 | 6 Sept 2006 | British | - |
| Mary Ford | Secretary | 6 Sept 2006 | 30 Mar 2012 | British | - |
| Matthew Anderson Jones | Director | 3 Sept 2002 | 14 Apr 2004 | British | 55 years |
| Philip Roy Barltrop | Director | 14 Apr 2004 | 31 Dec 2006 | British | 71 years |
| Philippe Nicolas Frenay | Director | 1 Oct 2011 | 9 Oct 2015 | French | 59 years |
| Stuart Christopher Cox | Secretary | 5 Jun 1992 | 11 Nov 1992 | British | - |
| Stuart Christopher Cox | Secretary | 27 Mar 2003 | 3 Sept 2003 | British | - |
| Susan Mary Morrison | Director | 8 Mar 2004 | 31 Dec 2004 | British | 84 years |