| Anna Maria Dugdale | Director | 1 Feb 2016 | 31 Dec 2019 | British | 60 years |
| Anthony Christopher Tann | Director | 28 Nov 2007 | 28 Feb 2012 | British | 59 years |
| Brian Henry Neale | Director | 24 Jan 1997 | 26 May 2010 | British | 78 years |
| Diana Jane Marshall | Director | 27 Nov 1996 | 24 Jan 1997 | British | 60 years |
| Donald Carter | Director | 20 Feb 2002 | 25 Apr 2017 | British | 77 years |
| Emily Clare Vinters | Director | 1 Mar 2017 | 26 Oct 2023 | British | 48 years |
| Geoffrey Roy Whistler | Director | 28 Nov 2007 | 31 Mar 2016 | British | 70 years |
| Gerald William Victor Daniels | Secretary | 22 Dec 2000 | 19 Jun 2012 | British | - |
| Graham Leslie Drake | Secretary | 24 Jan 1997 | 28 Jul 2000 | British | - |
| Grant John Keys | Director | 31 Dec 2016 | 14 May 2020 | British | 45 years |
| Maureen Pooley | Director | 27 Nov 1996 | 24 Jan 1997 | English | 80 years |
| Maureen Pooley | Secretary | 27 Nov 1996 | 24 Jan 1997 | English | - |
| Michael Henry Dixon | Director | 20 Feb 2002 | 26 May 2010 | British | 78 years |
| Michael Turner | Director | 19 Jun 2012 | 14 May 2020 | British | 54 years |
| Peter Cecil Dixon | Director | 20 Feb 2002 | 31 Jan 2005 | British | 82 years |
| Peter Smith | Director | 20 Feb 2002 | 28 Sept 2016 | British | 71 years |
| Robert Arthur Harrington | Director | 20 Feb 2002 | 31 Aug 2012 | British | 77 years |
| Robert George Russell Carter | Director | 24 Jan 1997 | 16 Feb 2011 | British | 73 years |
| Robert John Alflatt | Secretary | 19 Jun 2012 | 6 Jun 2018 | - | - |
| Roy Arthur Burton | Director | 20 Feb 2002 | 26 May 2010 | British | 86 years |
| Saul David Humphrey | Director | 28 Nov 2007 | 8 Dec 2016 | British | 59 years |
| Stephen Anthony Clarke | Director | 31 Dec 2016 | 18 Feb 2025 | British | 55 years |
| Stuart Neil Harold Wright | Secretary | 28 Jul 2000 | 22 Dec 2000 | British | - |
| Thomas Hector Atkins | Director | 24 Jan 1997 | 31 Dec 2011 | British | 81 years |