| Alan John Coates | Director | 4 Sept 2000 | 7 Jan 2005 | British | 74 years |
| Andrew Timothy Jenkinson | Director | 1 Oct 2008 | 7 Apr 2011 | British | 73 years |
| Anthony John Germain Parsons | Secretary | 24 Oct 1992 | 16 Jun 1994 | British | - |
| Ashish Rudra | Director | 11 Jan 1995 | 30 Sept 1998 | Indian | 68 years |
| Christina Hong Ye | Secretary | 1 Oct 2008 | 20 May 2013 | British | - |
| Christopher Paul Martin | Secretary | 20 May 2013 | 1 Jul 2023 | - | - |
| Christopher Robin Leslie Phillips | Director | 20 May 2013 | 14 Mar 2016 | British | 76 years |
| David Cowans | Director | 20 May 2013 | 1 Dec 2021 | British,irish | 69 years |
| Dominic Joseph Lavelle | Director | 15 Oct 2007 | 30 Sept 2008 | British | 63 years |
| Grahame Martin Pritchard | Director | 29 Nov 1999 | 4 Sept 2000 | British | 64 years |
| Hugh Jordan Mcgeever | Director | 11 Apr 2011 | 31 Jul 2024 | British | 66 years |
| Jonathan Michael Gooding | Director | 24 Oct 1992 | 12 Aug 1998 | British | 73 years |
| Jonathan Michael Gooding | Secretary | 31 Dec 1994 | 12 Aug 1998 | British | - |
| Julie Salam | Secretary | 30 Jun 2000 | 29 Jun 2001 | British | - |
| Juliet Mary Susan Bellis | Secretary | 3 Jul 2003 | 24 Jul 2008 | British | - |
| Lisbeth Ann Childs | Director | 19 Aug 1998 | 31 Dec 1998 | British | 74 years |
| Lisbeth Ann Childs | Director | 8 Jan 1999 | 30 Jun 2000 | British | 74 years |
| Lisbeth Ann Childs | Secretary | 12 Aug 1998 | 31 Dec 1998 | British | - |
| Lucy Cummings | Director | 3 Jul 2003 | 1 Jul 2006 | British | 66 years |
| Mark Anthony Jackson-stops | Director | 31 Dec 1991 | 23 Oct 1992 | British | 76 years |
| Michael Pearson | Director | 16 Apr 2004 | 15 Oct 2007 | British | 54 years |
| Michael Raymond Rutland | Director | 18 May 2001 | 3 Jul 2003 | British | 60 years |
| Neil Graham Bellis | Director | 3 Jul 2003 | 1 Jul 2006 | British | 72 years |
| Nigel John Cadbury Wilson | Director | 12 Aug 1998 | 8 Jan 1999 | British | 69 years |
| Nigel John Cadbury Wilson | Secretary | 29 Jun 2001 | 3 Jul 2003 | British | - |
| Robin Simon Johnson | Secretary | 31 Jan 2008 | 1 Oct 2008 | British | - |
| Timothy Saunders | Director | 31 Dec 1998 | 29 Nov 1999 | British | 63 years |
| Timothy Saunders | Secretary | 31 Dec 1998 | 30 Jun 2000 | British | - |
| Timothy William Ashworth Jackson-stops | Director | 31 Dec 1991 | 23 Oct 1992 | British | 84 years |
