| Alan Paul Busson | Secretary | 3 Apr 2006 | 29 Sept 2006 | British | - |
| Alexander Keith Lyle | Director | 13 Aug 1991 | 20 Dec 1995 | British | 69 years |
| Amanda Louise Knott | Secretary | 29 Sept 2006 | 22 May 2013 | British | - |
| Andrew David Strang | Director | 13 Aug 1991 | 20 Dec 1995 | British | 73 years |
| Ann Claire Blundell | Secretary | 22 May 2013 | 10 Feb 2014 | - | - |
| Brian Michael Thomas | Director | 20 Dec 1995 | 3 Aug 1998 | British | 74 years |
| Corina Katherine Ross | Secretary | 10 Feb 2011 | 22 May 2013 | British | - |
| Helen Frances Leigh Rogers | Secretary | 14 Jul 2008 | 2 Dec 2011 | British | - |
| Howard David Goldring | Director | 13 Aug 1991 | 1 Jun 1992 | British | 76 years |
| Howard James Maguire | Director | 13 Aug 1991 | 20 Dec 1995 | British | 78 years |
| Ian Ritchie | Secretary | 22 May 2013 | 10 Feb 2014 | - | - |
| Isla Rebecca Hale | Secretary | 20 Jul 2004 | 3 Apr 2006 | British | - |
| James Douglas Sutherland | Director | 28 Jun 2013 | 20 Oct 2017 | British | 52 years |
| Jayne Michelle Meacham | Secretary | 1 Nov 2006 | 2 May 2008 | British | - |
| John Peter Gurney | Director | 13 Aug 1991 | 20 Dec 1995 | British | 90 years |
| Jonathan Vaughan-williams | Director | 25 Mar 2014 | 28 Apr 2017 | British | 59 years |
| Kenneth William Ballard Inglis | Director | 13 Aug 1991 | 29 Apr 1994 | British | 83 years |
| Lily Olisa Holding | Director | 20 Jul 2004 | 22 Apr 2005 | British | 63 years |
| Malcolm Nigel Baker | Director | 13 Aug 1991 | 30 Jun 1995 | British | 69 years |
| Martin David Moule | Director | 20 Dec 1995 | 24 Sept 1997 | British | 71 years |
| Neil James Evans | Director | 22 Apr 2005 | 25 Mar 2014 | British | 69 years |
| Nigel Lowe | Director | 23 Sept 2010 | 28 Jun 2013 | British | 74 years |
| Norman John Sharman | Director | 13 Aug 1991 | 28 Oct 1994 | British | 74 years |
| Peter Charles Howe | Director | 24 Jul 2003 | 20 Jul 2004 | British | 80 years |
| Peter Charles Howe | Secretary | 13 Aug 1991 | 20 Jul 2004 | British | - |
| Peter John Steer | Director | 22 Apr 2005 | 31 Aug 2010 | British | 73 years |
| Phil Andrew Hodkinson | Director | 24 Sept 1997 | 22 Nov 2000 | British | 68 years |
| Sarah Fiona Arkle | Director | 13 Aug 1991 | 20 Dec 1995 | British | 70 years |
| Shayne Paul Deighton | Director | 3 Aug 1998 | 19 Dec 2000 | British | 67 years |
| Steven James Colsell | Director | 19 Dec 2000 | 30 Sept 2004 | British | 62 years |
| Vincent John Jerrard | Director | 20 Dec 1995 | 24 Jul 2003 | British | 71 years |