| Adrian Robert Barnett Johnson | Director | 30 May 1992 | 14 Oct 2008 | British | 73 years |
| Alexander Oliver Insam | Director | 6 Mar 2000 | 8 Apr 2002 | British | 62 years |
| Andrew David Fairhurst | Secretary | 23 Aug 1993 | 1 Oct 2002 | British | - |
| Andrew Kevin Cole | Director | 7 May 1996 | 8 Apr 2002 | British | 66 years |
| Andrew Kevin Overy | Director | 29 Apr 2003 | 26 Apr 2013 | British | 61 years |
| Charles Edward Tiplady | Director | 1 Dec 1993 | 1 Dec 1996 | British | 81 years |
| Charles Peter Peal | Director | 30 May 1992 | 30 Jun 2000 | British | 72 years |
| Christophe Jean Fercocq | Director | 2 Aug 2000 | 8 Apr 2002 | French | 66 years |
| Christopher Peter Chambers | Director | 1 Jan 2006 | 31 Mar 2010 | British | 68 years |
| Clare Frances Carson | Secretary | 1 Oct 2002 | 29 Aug 2003 | British | - |
| David Rough | Director | 30 May 1992 | 31 Mar 2002 | British | 75 years |
| Dean Alan Mcdougall | Director | 30 Apr 2007 | 24 Aug 2007 | New Zealand | 49 years |
| Diana Margaret Marshall | Director | 7 May 1996 | 31 Jul 1999 | British | 67 years |
| Eric Lilford Cooper | Director | 30 May 1992 | 31 Dec 2000 | British | 80 years |
| George Brian Phillips | Director | 27 Sept 2000 | 8 Apr 2002 | British | 66 years |
| Herve Jacques Franc | Director | 2 Aug 2000 | 8 Apr 2002 | French | 69 years |
| Ian Duncan Taylor | Director | 30 May 1992 | 30 Sept 1999 | United Kingdom | 71 years |
| Ivan Maxwell Heywood | Director | 7 May 1996 | 8 Apr 2002 | British | 69 years |
| Ivan Maxwell Heywood | Director | 29 Apr 2005 | 11 Jun 2013 | British | 69 years |
| James Peter Dawes | Director | 24 Aug 2007 | 20 Nov 2015 | British | 55 years |
| John Tristram Loveys Jervoise | Director | 7 May 1996 | 3 Jul 1997 | British | 64 years |
| Jonathan Michael Vernon Rashleigh | Director | 30 May 1992 | 18 Nov 1993 | British | 76 years |
| Kevin John Gregory | Director | 14 Nov 2002 | 4 Jul 2012 | British | 69 years |
| Maggie Lid Choo Lee Borton | Director | 1 Jul 2000 | 31 Jan 2005 | Malaysian | 69 years |
| Mariette Catherine Davis | Director | 19 Nov 1997 | 4 Jan 2000 | British | 68 years |
| Mark Joseph Zinkula | Director | 17 Oct 2011 | 23 Jan 2014 | American | 59 years |
| Michael Kane O'donnell | Director | 6 Mar 2000 | 8 Apr 2002 | Irish | 59 years |
| Michael Kane O'donnell | Director | 6 Aug 2007 | 31 Dec 2008 | Irish | 59 years |
| Michael Mowlem | Director | 1 Mar 2001 | 8 Apr 2002 | British | 59 years |
| Paul Graham Southwell | Director | 7 May 1996 | 7 Jan 2000 | British | 66 years |
| Paul Robertson Stanworth | Director | 10 Feb 2014 | 28 Nov 2017 | British | 59 years |
| Peter John Laszlo | Director | 30 May 1992 | 18 Nov 1996 | British | 82 years |
| Peter Julian Lomax | Director | 1 Dec 1996 | 17 Apr 2003 | British | 83 years |
| Richard Charles Austin Caston | Director | 6 Mar 2000 | 30 Jul 2000 | British | 59 years |
| Robin Thomas Cliff Pakenham | Director | 7 May 1996 | 4 Apr 2001 | British | 63 years |
| Ronald Edward Bell | Director | 15 Jul 1996 | 5 Nov 1997 | British | 70 years |
| Siobhan Geraldine Boylan | Director | 12 Jul 2013 | 18 Jan 2019 | British | 57 years |
| Stephen John Phillips | Director | 24 Jul 2012 | 24 Jul 2015 | British | 50 years |
| Thomas Andrew Forwood Smith | Secretary | 30 May 1992 | 23 Aug 1993 | British | - |
| Timothy James Breedon | Director | 1 Jan 2002 | 31 Dec 2005 | British | 68 years |
| William De Bretton Priestley | Director | 6 Aug 2007 | 22 Nov 2013 | British | 58 years |
| William Roger Charlesworth | Director | 21 Sept 1992 | 31 Jul 1999 | British | 81 years |
| William Roger Charlesworth | Director | 19 Jul 2000 | 31 Mar 2004 | British | 81 years |
| Zoe Clements | Director | 24 Jul 2012 | 2 Mar 2015 | British | 53 years |