| Allyson Mary Teresa Ablett | Secretary | 25 May 2006 | 31 Dec 2008 | British | - |
| Anoop Kang | Director | 7 Jan 2016 | 21 Dec 2016 | British | 52 years |
| Anthony Derek Wright | Director | 1 Jul 2002 | 30 Apr 2006 | British | 80 years |
| Anthony William Graham | Director | 1 Jul 1998 | 25 May 2006 | British | 79 years |
| Anthony William Graham | Secretary | 10 May 1999 | 25 May 2006 | British | - |
| Archibald Thomas James Thomson | Director | 30 Oct 1992 | 11 Oct 1996 | British | 77 years |
| Archibald Thomas James Thomson | Secretary | 30 Oct 1992 | 11 Oct 1996 | British | - |
| Bethan Anne Elizabeth Melges | Director | 16 Jul 2015 | 9 Sept 2019 | British | 51 years |
| Bethan Melges | Secretary | 16 Jul 2015 | 9 Sept 2019 | - | - |
| Brian William Cartledge | Director | 30 Oct 1990 | 1 Oct 2006 | British | 70 years |
| David Neville Benson | Director | 8 Jul 2013 | 9 Oct 2015 | British | 56 years |
| David William Edmund Sterry | Director | 1 Jul 2002 | 7 Jul 2008 | British | 78 years |
| Deborah Pamela Hamilton | Secretary | 8 Jul 2013 | 22 Sept 2014 | - | - |
| Donald William Macdiarmid | Director | 6 Sept 2012 | 8 Jul 2013 | British | 65 years |
| Gareth Charles Thomas Pritchard | Director | 30 Oct 1992 | 30 Jun 1998 | British | 72 years |
| Graham Cartledge | Director | 30 Oct 1990 | 1 Oct 2006 | British | 68 years |
| Haydn Jonathan Mursell | Director | 8 Jul 2013 | 16 Apr 2015 | British | 55 years |
| Hugh Edward Earle Raven | Director | 8 Jul 2013 | 16 Apr 2015 | British | 55 years |
| John Robert Gale | Director | 30 Oct 1992 | 16 Feb 1998 | British | 71 years |
| John Robert Gale | Director | 1 May 1998 | 10 May 1999 | British | 71 years |
| John Robert Gale | Secretary | 11 Oct 1996 | 10 May 1999 | British | - |
| Keith Cartledge | Director | 20 Nov 1979 | 30 Jun 2005 | British | 83 years |
| Mark Antony Hazlewood | Director | 13 Mar 2012 | 8 Jul 2013 | British | 60 years |
| Matthew Armitage | Director | 16 Apr 2015 | 16 Jul 2015 | British | 54 years |
| Matthew Armitage | Secretary | 12 Dec 2014 | 16 Jul 2015 | - | - |
| Matthew Stevens | Director | 9 Dec 2009 | 13 Mar 2012 | British | 57 years |
| Michael David Leech | Director | 31 Jul 1998 | 31 Dec 1999 | British | 68 years |
| Michael Edward Dunn | Director | 5 Aug 2005 | 8 Jan 2010 | British | 58 years |
| Michael Gallagher | Director | 26 Jun 1996 | 16 Feb 1998 | Irish | 67 years |
| Philip Higgins | Secretary | 9 Sept 2019 | 24 Sept 2021 | - | - |
| Philip Higgins | Director | 9 Sept 2019 | 24 Sept 2021 | British | 57 years |
| Philip Windover Fellowes-prynne | Director | 14 Apr 2008 | 6 Sept 2012 | British | 64 years |
| Richard Dean | Director | 1 Jul 2002 | 1 Oct 2006 | British | 67 years |
| Robert Ernest Patrick Browne | Director | 8 Nov 2001 | 5 Aug 2005 | British | 84 years |
| Robert Ian Findlater | Director | 1 Jul 2002 | 1 Oct 2006 | British | 71 years |
| Simon David Martle | Director | 26 Oct 2018 | 31 Oct 2019 | British | 56 years |
| Simon John Howell | Secretary | 1 Jan 2009 | 8 Jul 2013 | British | - |
| Thomas Cartledge | Director | 20 Nov 1979 | 31 Dec 1999 | British | 91 years |
| Thomas Lee Foreman | Director | 21 Dec 2016 | 26 Oct 2018 | British | 50 years |