| Alan Charles Fuller | Director | 31 Dec 1999 | 27 Feb 2002 | British | 68 years |
| Alan Charles Fuller | Secretary | 31 Dec 1999 | 27 Feb 2002 | British | - |
| Alan Leonard Whitnall | Secretary | 27 Feb 2002 | 29 May 2009 | British | - |
| Andrew William Dyer | Director | 3 Aug 1992 | 29 Jul 1997 | British | 72 years |
| Ann Heron Gloag | Director | 13 Dec 1993 | 20 Apr 1998 | British | 84 years |
| Anthony Geoffrey Cox | Director | 10 Dec 1993 | 24 Nov 1998 | British | 73 years |
| Arnold Mark Threapleton | Director | 18 Apr 2017 | 30 Jun 2020 | British | 72 years |
| Brian John Cox | Director | 1 Aug 2000 | 3 Jul 2002 | British | 79 years |
| Brian Souter | Director | 13 Dec 1993 | 23 Mar 1998 | British | 72 years |
| Carla Lucy Stockton-jones | Director | 24 Feb 2020 | 3 Jul 2023 | British | 54 years |
| Christopher Graham Hilditch | Director | 31 May 2000 | 15 May 2002 | British | 70 years |
| Christopher Thomas Hemming | Secretary | 3 Aug 1992 | 31 Mar 1994 | British | - |
| Colin Brown | Director | 30 Dec 2004 | 31 May 2019 | British | 58 years |
| David Brian Worsell | Director | 3 Aug 1992 | 30 Nov 1997 | British | 76 years |
| Elisabeth Tasker | Director | 31 Jan 2024 | 1 Jun 2024 | British | 59 years |
| Gary James Nolan | Director | 2 May 2013 | 7 Apr 2017 | British | 70 years |
| Ian Roy Manning | Director | 1 Jun 2003 | 2 Jun 2014 | British | 72 years |
| Jeremy Robert Davison | Director | 28 Jan 1994 | 2 Jan 1996 | British | 69 years |
| Jeremy Robert Davison | Secretary | 31 Mar 1994 | 2 Jan 1996 | British | - |
| John Frederick Staite | Director | 1 Jan 1996 | 31 Dec 1999 | British | 78 years |
| John Frederick Staite | Secretary | 1 Jan 1996 | 31 Dec 1999 | British | - |
| John Gould | Director | 1 Aug 2001 | 1 Jun 2003 | British | 76 years |
| Karen Rosaleen Robbins | Director | 1 Dec 2000 | 19 Apr 2002 | British | 57 years |
| Keith Robertson Cochrane | Director | 10 Dec 1993 | 1 Aug 2000 | British | 61 years |
| Leslie Brian Warneford | Director | 21 Jan 1999 | 26 Apr 2013 | British | 78 years |
| Malcolm Howitt | Director | 11 Sept 2000 | 30 Jun 2001 | British | 79 years |
| Mark Iorwedd Rhys-davies | Director | 3 Aug 1992 | 31 Mar 1994 | British | 76 years |
| Mark Richard Thomas | Director | 3 Aug 1992 | 10 Dec 1993 | British | 75 years |
| Martin Andrew Griffiths | Director | 1 Aug 2000 | 30 Dec 2004 | British | 60 years |
| Martin Sutton | Director | 23 Jul 1997 | 8 Sept 2000 | British | 72 years |
| Michael John Kinski | Director | 20 Apr 1998 | 30 Nov 1998 | British | 74 years |
| Michael John Vaux | Director | 31 Mar 2009 | 28 Dec 2016 | British | 55 years |
| Michael John Vaux | Secretary | 29 May 2009 | 30 Jul 2024 | British | - |
| Norrie Russell Thomas | Director | 3 Aug 1992 | 10 Dec 1993 | British | 74 years |
| Philip John Stockley | Director | 31 May 2000 | 3 Jun 2003 | British | 53 years |
| Rachel Geliamassi | Director | 12 Apr 2021 | 31 Jan 2024 | British | 45 years |
| Robert Gervase Andrew | Director | 31 Mar 2009 | 28 Dec 2016 | British | 63 years |
| Robert Montgomery | Director | 31 Mar 2009 | 22 Mar 2017 | British | 74 years |
| Robert Stanley Dorr | Director | 1 Jan 2001 | 27 Feb 2002 | British | 72 years |
| Rupert Miles Cox | Director | 2 Jun 2014 | 31 Aug 2023 | British | 46 years |
| Samuel Derek Greer | Director | 10 Mar 2010 | 28 Dec 2016 | British | 58 years |
| William Barry Hinkley | Director | 30 Nov 1998 | 25 Jul 2000 | British | 77 years |