| Alexander Park Leitch | Director | 8 Mar 1996 | 20 Feb 2004 | British | 79 years |
| Andrew Stephen Melcher | Director | 1 May 1992 | 15 Oct 1997 | U S | 77 years |
| Ann Claire Blundell | Secretary | 26 Jun 2013 | 1 Apr 2014 | - | - |
| Antony Robin Napier Ratcliff | Director | 1 May 1992 | 14 Dec 1995 | British | 101 years |
| Brian Michael Thomas | Director | 1 Feb 1999 | 3 Dec 2001 | British | 74 years |
| Brian Pattison Garraway | Director | 1 May 1992 | 1 Jul 1992 | British | 95 years |
| Clive Frederick Coates | Director | 1 May 1992 | 31 Dec 1998 | British | 82 years |
| Colin Edward Parker | Director | 11 May 1993 | 28 Apr 1995 | British | 91 years |
| Daniel John Pender | Director | 31 May 2012 | 1 Jul 2013 | British | 51 years |
| David John Etherington | Director | 23 Feb 2005 | 31 Aug 2012 | British | 69 years |
| David Perrott Sims | Director | 23 Feb 2005 | 21 Aug 2009 | British | 68 years |
| David Philip Allvey | Director | 1 May 1992 | 8 Mar 1993 | British | 81 years |
| Derek Richard Woodward | Secretary | 31 May 1999 | 31 Aug 2001 | British | - |
| Gary Paul John Shaughnessy | Director | 1 Apr 2014 | 2 Oct 2015 | British | 60 years |
| George Pallister Greener | Director | 11 May 1993 | 8 Mar 1996 | British | 81 years |
| Graham Henry Lockwood | Director | 1 May 1992 | 31 Oct 1994 | British | 91 years |
| Helen Alison Pickford | Director | 1 Apr 2016 | 30 Jun 2020 | British | 55 years |
| Ian Ritchie | Secretary | 26 Jun 2013 | 1 Apr 2014 | - | - |
| James Anthony Wiltshire | Secretary | 1 Jun 1992 | 31 May 1999 | British | - |
| James Richard Sykes | Director | 26 Jun 2013 | 31 Dec 2019 | British | 65 years |
| John Henry Bishop | Director | 1 May 1992 | 31 May 1994 | British | 81 years |
| John Patrick Dowling | Director | 11 May 1993 | 11 Feb 1994 | British | 82 years |
| Lily Olisa Holding | Secretary | 28 Jul 2004 | 20 Jun 2005 | British | - |
| Mark George Culmer | Director | 3 Dec 2001 | 26 Nov 2003 | British | 64 years |
| Martin David Moule | Director | 26 Nov 2003 | 25 Apr 2005 | British | 71 years |
| Martin Faulkner Broughton | Director | 1 Jun 1992 | 11 May 1993 | British | 79 years |
| Michael Harris | Director | 26 Nov 2003 | 23 Feb 2005 | British | 61 years |
| Neil James Evans | Director | 20 Jun 2005 | 31 Mar 2016 | British | 69 years |
| Nigel Lowe | Secretary | 20 Jun 2005 | 28 Jun 2013 | British | - |
| Oscar Clemente Tengtio | Director | 21 Aug 2009 | 31 May 2012 | American | 70 years |
| Patrick Henry Osullivan | Director | 15 Sept 1997 | 2 Dec 2002 | Irish | 77 years |
| Paul Victor Sant Manduca | Director | 21 May 1994 | 22 Feb 1999 | British | 75 years |
| Peter Charles Howe | Secretary | 4 Sept 2001 | 28 Jul 2004 | British | - |
| Philip Smith | Director | 15 Oct 1997 | 12 Oct 1998 | British | 79 years |
| Shelley Francine Grey | Secretary | 1 May 1992 | 1 Jun 1992 | British | - |