| Alexandra Viatkin | Director | 20 May 2004 | 23 Mar 2023 | British | 83 years |
| Andrew Oliver Mullins | Director | 9 Jun 2006 | 10 Apr 2007 | British | 62 years |
| Ann Louise Paul | Director | 13 Jan 2009 | 27 Apr 2010 | British | 56 years |
| Anthony Wilfred Norbury | Director | 20 Jan 1999 | 20 Feb 2002 | British | 88 years |
| Arthur Bertwistle | Director | 20 Dec 1992 | 4 Sept 2007 | British | 83 years |
| Carla Stone | Secretary | 31 Oct 2001 | 2 Apr 2012 | British | - |
| Charles Patrick Kerrigan | Director | 8 Mar 2006 | 17 Nov 2008 | British | 73 years |
| Charles Patrick Kerrigan | Director | 17 Feb 2009 | 6 Oct 2012 | British | 73 years |
| Christopher Norman Wallis | Director | 5 Jun 1995 | 9 Apr 1997 | British | 75 years |
| Clive Alexander Milner | Director | 2 Apr 2009 | 3 Feb 2010 | British | 70 years |
| Craig Palmer | Director | 18 Sept 2012 | 10 May 2016 | British | 46 years |
| Daniel Taylor | Director | 13 Jan 2000 | 20 Jan 2005 | British | 68 years |
| David James Keen | Director | 9 Apr 1997 | 28 Feb 2016 | British | 64 years |
| Elizabeth Claire Wright | Director | 9 Apr 1997 | 13 Jan 2000 | British | 66 years |
| Geoffrey David Guy | Director | 20 Dec 1992 | 29 Jun 2006 | British | 79 years |
| Grahame Thomas Crouch | Director | 21 Mar 2003 | 27 Jan 2006 | British | 73 years |
| James Alan Anslow | Director | 10 Sept 1998 | 31 Dec 2004 | British | 75 years |
| James Steven Lee | Director | 24 Apr 2012 | 31 May 2016 | British | 51 years |
| Jayne Causer | Director | 9 Apr 1997 | 16 Jan 2001 | British | 76 years |
| John Anthony Shaw | Director | 1 May 2008 | 31 Dec 2016 | British | 77 years |
| John Edward Widdows | Director | 23 Nov 1994 | 29 Aug 1997 | British | 81 years |
| Kenneth Charles Hall | Director | 27 Jan 1993 | 31 Dec 2007 | British | 71 years |
| Kenneth Kelly | Director | 28 Sept 2011 | 31 Jan 2013 | British | 66 years |
| Linda Spain | Director | 16 Jan 2001 | 4 Sept 2007 | British | 75 years |
| Mark Beesley | Director | 18 Jun 2010 | 14 Jun 2011 | British | 63 years |
| Michael Gordon | Director | 11 Jul 2007 | 10 Sept 2008 | British | 64 years |
| Nigel Roderick Lomas | Director | 20 Oct 2010 | 30 Nov 2012 | British | 74 years |
| Patrick Anthony James Hosking | Director | 19 Apr 2006 | 14 May 2010 | British | 66 years |
| Paul Chandler Brandenburg | Director | 24 Mar 2011 | 3 Feb 2012 | American | 41 years |
| Paul Daniel Goulding | Director | 26 May 2005 | 14 Dec 2009 | British | 65 years |
| Paul Stuart Alfred Kuttner | Director | 29 Aug 1997 | 15 Mar 2006 | British | 86 years |
| Paul Stuart Alfred Kuttner | Director | 1 Apr 2010 | 20 Jul 2011 | British | 86 years |
| Paul Stuart Ham | Director | 9 Apr 1997 | 31 May 1998 | Australian | 66 years |
| Peter Sean Prendergast | Director | 21 Nov 1997 | 21 Oct 2005 | British | 81 years |
| Peter Walter Stehrenberger | Director | 20 Dec 1992 | 8 Mar 2003 | Swiss | 88 years |
| Peter Walter Stehrenberger | Secretary | 20 Dec 1992 | 31 Oct 2001 | Swiss | - |
| Richard Mark Sykes | Director | 24 Dec 2009 | 7 Dec 2012 | British | 62 years |
| Richard Martin Linford | Director | 3 Jan 1995 | 14 May 1997 | British | 74 years |
| Robert Maxwell Miller | Director | 9 Apr 1997 | 22 Aug 1997 | British | 74 years |
| Rosemary Anne Ryde | Director | 5 Jan 2005 | 4 Aug 2011 | British | 54 years |
| Stephen Thomas Barraclough | Director | 20 Dec 1992 | 3 Jan 1995 | British | 74 years |
| Stephen Wayne Daintith | Director | 19 Sept 2005 | 19 Sept 2005 | British | 62 years |
| Tudor Hopkins | Director | 20 Dec 1992 | 31 Dec 1998 | British | 89 years |
| William More | Director | 9 Apr 1997 | 31 May 2007 | British | 77 years |