| Adam Holden | Director | 11 May 2015 | 1 Jul 2016 | British | 52 years |
| Adrian John Mardell | Director | 1 Jun 2019 | 31 Oct 2023 | British | 64 years |
| Andrew David Barnard | Director | 1 Feb 2010 | 31 May 2013 | British | 54 years |
| Andrew Paul Gadsby | Director | 31 May 2013 | 11 May 2015 | British | 59 years |
| Angela Mary Cunningham | Secretary | 15 Jun 2001 | 20 Dec 2002 | British | - |
| Anthony Robert John Dening | Director | 4 Apr 1992 | 29 Mar 1996 | British | 87 years |
| Barrie Arthur Thrussell | Director | 24 Oct 1994 | 29 Mar 1996 | British | 81 years |
| Bibiana Boerio | Director | 18 Aug 1995 | 21 Oct 1996 | United States | 71 years |
| Bibiana Boerio | Director | 21 Oct 1996 | 9 Nov 2000 | United States | 71 years |
| Brian Addison Carte | Director | 6 Jul 1994 | 30 Jun 1996 | British | 82 years |
| Brian Patrick Morrish | Director | 4 Apr 1992 | 13 Dec 1993 | British | 89 years |
| Carolyn Jean Whittaker | Secretary | 21 Dec 2002 | 5 Dec 2005 | Other | - |
| Charles Leonard Hunt | Director | 4 Apr 1992 | 23 May 1994 | British | 70 years |
| Charles Stephen Woolard | Director | 10 Nov 2000 | 31 Dec 2001 | Usa | 72 years |
| Christopher Paul Stamper | Director | 1 Jan 1999 | 5 Nov 1999 | British | 70 years |
| David Brian Wilcox | Director | 1 Jan 1999 | 31 Oct 2000 | British | 79 years |
| David Miles Smith | Director | 1 Jan 2002 | 20 Dec 2005 | British | 64 years |
| David Miles Smith | Director | 7 Mar 2008 | 8 Feb 2010 | British | 64 years |
| Derek John Lewis | Secretary | 13 Dec 1995 | 4 Apr 1997 | British | - |
| Derek John Waghorn | Director | 1 Nov 2000 | 28 Nov 2003 | British | 74 years |
| Frank Lazzaro | Director | 20 Dec 2005 | 7 Mar 2008 | Australian | 65 years |
| Gillian Wraith Carter | Secretary | 5 Dec 2005 | 8 Aug 2008 | British | - |
| Graham Colin Clemett | Director | 1 Jun 2003 | 1 Jun 2007 | British | 65 years |
| Heidi Elizabeth Bromley | Secretary | 18 Feb 1998 | 14 Jun 2001 | British | - |
| Howard Michael Lago | Director | 28 Oct 1996 | 31 Dec 1998 | British | 77 years |
| Ian John Isaac | Director | 1 Jul 2016 | 30 Sept 2024 | British | 62 years |
| John Burke | Director | 22 Jun 1995 | 30 Jun 1999 | British | 73 years |
| John Charlton Barnes | Secretary | 14 Dec 1992 | 13 Dec 1995 | British | - |
| John Frederick Edwards | Director | 4 Apr 1992 | 18 Aug 1995 | British | 77 years |
| Keith Francis | Director | 4 Apr 1992 | 15 Jun 1995 | British | 77 years |
| Kenneth David Matheson Gregor | Director | 8 Feb 2010 | 1 Jun 2019 | British | 58 years |
| Lindsey Helen Cameron | Secretary | 8 Aug 2008 | 7 Mar 2013 | Other | - |
| Lyle Alexander Watters | Director | 31 Jul 2003 | 20 Dec 2005 | British | 60 years |
| Malcolm Ernest Hobson | Director | 4 Apr 1992 | 31 Dec 1998 | British | 76 years |
| Margaret Janet Evans | Secretary | 4 Apr 1992 | 14 Dec 1992 | British | - |
| Margaret Janet Evans | Secretary | 7 Nov 1997 | 18 Feb 1998 | British | - |
| Michael Brian | Director | 6 Jul 1994 | 28 Oct 1996 | British | 83 years |
| Neeraj Kapur | Director | 12 Jun 2007 | 1 Feb 2010 | British | 60 years |
| Nigel Pearce | Director | 25 Nov 1999 | 31 May 2003 | British | 74 years |
| Nigel Timothy John Clibbens | Director | 28 Nov 2003 | 27 Feb 2015 | British | 66 years |
| Peter Edmund Lord | Director | 27 Feb 2015 | 31 Dec 2024 | British | 67 years |
| Richard Charles Osborne Shore | Director | 20 Dec 2005 | 1 Dec 2023 | British | 61 years |
| Richard John Molyneux | Director | 9 Nov 2023 | 1 Dec 2023 | British | 60 years |
| Robert James Collier | Director | 4 Apr 1992 | 13 May 1993 | British | 78 years |
| Roger George Putnam | Director | 4 Apr 1992 | 21 Oct 1996 | British | 80 years |
| Ronald James Young | Director | 4 Apr 1992 | 6 Jul 1994 | British | 92 years |
| Stephen Chester | Director | 2 Aug 1999 | 31 Jul 2003 | British | 66 years |
| Stephen John Perrin | Director | 14 Jul 1993 | 21 Oct 1996 | British | 78 years |
| Stuart Preston | Secretary | 4 Apr 1997 | 7 Nov 1997 | British | - |