| Andrew John Carpenter | Director | 3 Dec 1993 | 30 Sept 1994 | British | 65 years |
| Douglas Nigel Manders | Nominee Director | 28 Aug 1992 | 3 Dec 1993 | British | 97 years |
| Douglas Nigel Manders | Nominee Secretary | 28 Aug 1992 | 3 Dec 1993 | British | - |
| Emma Jane Marsden | Director | 28 Aug 1992 | 3 Dec 1993 | British | 62 years |
| Geoffrey Mortimer Goodwill | Director | 30 Sept 1994 | 19 May 2005 | British | 82 years |
| Iain Nicoll Robertson | Director | 19 May 2005 | 26 Sept 2008 | British | 64 years |
| James Oliver Pitt | Director | 11 Mar 2009 | 25 Jun 2021 | British | 56 years |
| James Patrick Frank White | Director | 3 Jul 2013 | 31 Mar 2017 | British | 40 years |
| Jane Claire Downes | Secretary | 30 Sept 1994 | 12 Jan 2001 | British | - |
| John Drummond Bell | Director | 3 Jul 2013 | 18 Aug 2016 | British | 77 years |
| Nicholas Jay Gilbert | Secretary | 12 Dec 2003 | 6 Aug 2004 | British | - |
| Paul Terence Millington | Director | 18 Aug 2016 | 5 Apr 2022 | British | 64 years |
| Paul Terence Millington | Secretary | 12 Jan 2001 | 12 Dec 2003 | British | - |
| Richard James Mark Bean | Director | 1 Jul 2021 | 5 Apr 2022 | British | 44 years |
| Robert Marshall | Secretary | 31 Dec 2011 | 19 Apr 2022 | - | - |
| Stuart Jobbins | Director | 26 Sept 2008 | 11 Mar 2009 | British | 65 years |
| Stuart Jobbins | Secretary | 6 Aug 2004 | 31 Dec 2011 | British | - |
| Yvonne Catherine Mary Goldingham | Director | 3 Dec 1993 | 30 Sept 1994 | British | 61 years |
| Yvonne Catherine Mary Goldingham | Secretary | 3 Dec 1993 | 30 Sept 1994 | British | - |