| Alan Charles Stephens | Director | 1 Jun 1998 | 13 Jun 2000 | British | 69 years |
| Albert Edward Fry | Director | 13 Jun 2000 | 20 Jun 2003 | British | 90 years |
| Albert Edward Fry | Director | 16 May 2008 | 26 May 2009 | British | 90 years |
| Andrew Michael Kerswell | Director | 20 Jun 2003 | 23 May 2007 | British | 66 years |
| Andrew Rodney Wickham | Director | 17 Dec 2009 | 30 Apr 2012 | British | 60 years |
| Barry Anthony Keel | Director | 23 May 2007 | 1 Dec 2009 | British | 74 years |
| Benny Gilroy | Director | 8 Jun 1995 | 1 May 1996 | British | 87 years |
| Brian Leslie Fisher | Director | 17 Jan 1992 | 1 Oct 1999 | British | 80 years |
| Brian Vincent | Director | 17 Jan 1992 | 1 May 1997 | British | 76 years |
| Brian Vincent | Director | 1 Feb 2002 | 1 Sept 2003 | British | 76 years |
| Carolyn Giles | Director | 1 Apr 2023 | 30 Apr 2024 | British | 55 years |
| Christian Schreyer | Director | 5 Nov 2021 | 10 Jun 2022 | German | 58 years |
| Christopher Alan Webster | Director | 17 Jan 1992 | 8 May 2007 | British | 77 years |
| Christopher Philip Pattison | Director | 3 Jun 2005 | 23 May 2007 | British | 71 years |
| David Alexander Millar | Director | 17 Jan 1992 | 1 Jun 1998 | British | 83 years |
| David Allen Brown | Director | 1 Apr 2011 | 5 Nov 2021 | British | 66 years |
| David Frank Viney | Director | 23 May 2007 | 1 Dec 2009 | British | 91 years |
| David John Stark | Director | 13 Jun 2000 | 20 Jun 2003 | British | 95 years |
| David John Stark | Director | 26 May 2009 | 1 Dec 2009 | British | 95 years |
| Dennis Howard Dicker | Director | 17 Jan 1992 | 1 Oct 1993 | British | 98 years |
| Dennis John Camp | Director | 9 Jul 1999 | 13 Jun 2000 | British | 78 years |
| Derick Brian Bray | Director | 17 Jan 1992 | 20 May 1994 | British | 87 years |
| Derick Brian Bray | Director | 20 Jun 2003 | 23 May 2007 | British | 87 years |
| Edwin Shaun Rennie | Director | 20 Jun 2003 | 2 Jul 2004 | British | 70 years |
| Elodie Marie Francoise Brian | Director | 5 Jun 2019 | 27 Sept 2021 | French | 47 years |
| George William Wheeler | Director | 9 Jun 1995 | 13 Jun 2000 | British | 85 years |
| George William Wheeler | Director | 20 Jun 2003 | 23 May 2007 | British | 85 years |
| Gordon Alexander Boyd | Director | 28 Sept 2021 | 28 Mar 2022 | British | 66 years |
| Heather Lorraine Ellis | Director | 13 Jun 2000 | 20 Jun 2003 | British | 75 years |
| Iain Charles Perring | Director | 1 Apr 2023 | 14 Dec 2023 | British | 62 years |
| Ian David Bowyer | Director | 16 May 2008 | 26 May 2009 | British | 75 years |
| Jill Eileen Dolan | Director | 23 May 2007 | 16 May 2008 | British | 82 years |
| Jill Eileen Dolan | Director | 26 May 2009 | 1 Dec 2009 | British | 82 years |
| John Alec Lindley Ackroyd | Director | 17 Jan 1992 | 1 Dec 2009 | British | 65 years |
| John Alec Lindley Ackroyd | Secretary | 17 Jan 1992 | 1 Dec 2009 | British | - |
| John Ambrose Coyle | Director | 20 May 1994 | 8 Jul 1999 | British | 71 years |
| John Frederick Fox | Director | 14 Jun 2002 | 20 Jun 2003 | British | 87 years |
| John Gerard Williams | Director | 17 May 1996 | 13 Jun 2000 | British | 63 years |
| John Lavis Blower | Director | 17 Jan 1992 | 8 Jun 1995 | British | 63 years |
| John Leslie Mills | Director | 17 Jan 1992 | 8 Jun 1995 | British | 97 years |
| Jonathan Charles Thomas Drean | Director | 11 Jun 2008 | 1 Dec 2009 | British | 63 years |
| Jonathan Gray Bayliss | Director | 1 Oct 1999 | 26 Sept 2003 | British | 82 years |
| Karl Duncan | Director | 12 Jun 2007 | 30 Jun 2012 | British | 63 years |
| Keith Down | Director | 7 Mar 2011 | 6 Dec 2015 | British | 61 years |
| Keith Lawrence Ludeman | Director | 1 Dec 2009 | 2 Jul 2011 | British | 76 years |
| Kevin Charles Wigens | Director | 13 Jun 2000 | 14 Jun 2002 | British | 71 years |
| Martin Edward Leaves | Director | 23 May 2007 | 16 May 2008 | British | 52 years |
| Matthew Stjohn Dolphin | Director | 24 Jun 2010 | 31 Dec 2011 | British | 58 years |
| Michael John Edward Leaves | Director | 13 Jun 2000 | 20 Jun 2003 | British | 78 years |
| Michael John Edward Leaves | Director | 23 May 2007 | 16 May 2008 | British | 78 years |
| Michael John Foster | Director | 13 Jun 2000 | 20 Jun 2003 | British | 76 years |
| Michael John Foster | Director | 23 May 2007 | 1 Dec 2009 | British | 76 years |
| Nicholas John Dillon Woods | Director | 11 Jul 2012 | 12 Feb 2016 | British | 57 years |
| Nicholas Swift | Director | 1 Dec 2009 | 7 Mar 2011 | British | 62 years |
| Nicola Judith Wildy | Director | 20 Jun 2003 | 2 Jul 2004 | British | 80 years |
| Nigel James Pitt | Director | 23 May 2007 | 1 Oct 2009 | British | 73 years |
| Patricia Nora Coyle | Director | 20 May 1994 | 8 Jul 1999 | British | 77 years |
| Patrick John Nicholson | Director | 20 May 1994 | 8 Jun 1995 | British | 59 years |
| Paul Carter | Director | 9 Jul 1999 | 13 Jun 2000 | British | 67 years |
| Paul Carter | Director | 2 Jul 2004 | 23 May 2007 | British | 67 years |
| Paul Rowe | Director | 18 Jan 2002 | 20 Jun 2003 | British | 77 years |
| Peter Brookshaw | Director | 13 Jun 2000 | 15 Jun 2001 | British | 86 years |
| Peter Stanley Thorpe | Director | 13 Jun 1997 | 31 Dec 2001 | British | 72 years |
| Peter Sutton Kayer | Director | 28 Nov 2003 | 2 Mar 2007 | British | 78 years |
| Peter Whitfeld | Director | 17 Jan 1992 | 20 May 1994 | British | 106 years |
| Philip Charles Smith | Director | 1 May 2004 | 30 Sept 2007 | British | 62 years |
| Ronald Sidney Simmonds | Director | 17 Jan 1992 | 13 Jun 2000 | British | 105 years |
| Ronald Sidney Simmonds | Director | 20 Jun 2003 | 23 May 2007 | British | 105 years |
| Sarah Audrey Bennett | Director | 15 Jun 2001 | 18 Jan 2002 | British | 59 years |
| Sharon Ann Parnell | Director | 2 Mar 2007 | 1 Dec 2009 | British | 62 years |
| Simon Patrick Butcher | Director | 14 Mar 2016 | 30 Nov 2018 | British | 59 years |
| Steven Paul Lemin | Director | 1 Jun 1998 | 13 Jun 2000 | British | 70 years |
| Steven Paul Lemin | Director | 20 Jun 2003 | 2 Jul 2004 | British | 70 years |
| Susan Elizabeth Dawn | Director | 2 Jul 2004 | 3 Jun 2005 | British | 68 years |
| Thomas Philip Piggott | Director | 1 Oct 2007 | 24 Jun 2010 | British | 61 years |
| Valentine Hiromeris | Director | 2 Jul 2004 | 23 May 2007 | British | 77 years |