| Alan Paul Busson | Secretary | 20 Mar 2006 | 29 Sept 2006 | British | - |
| Alexander Park Leitch | Director | 6 Sept 1991 | 6 Dec 1995 | British | 79 years |
| Amanda Louise Knott | Secretary | 29 Sept 2006 | 22 May 2013 | British | - |
| Ann Claire Blundell | Secretary | 22 May 2013 | 10 Feb 2014 | - | - |
| Corina Katherine Ross | Secretary | 4 Feb 2011 | 22 May 2013 | British | - |
| David Clark Miller | Director | 6 Sept 1991 | 6 Dec 1993 | British | 79 years |
| Helen Frances Leigh Rogers | Secretary | 14 Jul 2008 | 2 Dec 2011 | British | - |
| Ian Graham Seward | Director | 15 Mar 1993 | 6 Dec 1995 | British | 79 years |
| Ian Ritchie | Secretary | 22 May 2013 | 10 Feb 2014 | - | - |
| 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 Antony Cacchioli | Director | 15 Jul 2000 | 22 May 2002 | British | 68 years |
| Jonathan Vaughan-williams | Director | 25 Mar 2014 | 28 Apr 2017 | British | 59 years |
| Kate Mary Elizabeth Brightmore | Secretary | 21 Jul 2004 | 20 Mar 2006 | British | - |
| Lily Olisa Holding | Director | 20 Jul 2004 | 12 May 2005 | British | 63 years |
| Neil James Evans | Director | 8 Feb 2010 | 25 Mar 2014 | British | 69 years |
| Nigel Lowe | Director | 4 May 2005 | 28 Jun 2013 | British | 74 years |
| Peter Charles Howe | Director | 24 Jul 2003 | 21 Jul 2004 | British | 80 years |
| Peter Charles Howe | Secretary | 6 Sept 1991 | 21 Jul 2004 | British | - |
| Peter John Steer | Director | 2 Dec 1996 | 8 Feb 2010 | British | 73 years |
| Peter William Stemp | Director | 6 Nov 1991 | 15 Mar 1993 | British | 80 years |
| Phil Andrew Hodkinson | Director | 6 Dec 1995 | 22 Nov 2000 | British | 68 years |
| Robert Frank Chapman | Director | 6 Sept 1991 | 20 Jun 2000 | British | 89 years |
| Vincent John Jerrard | Director | 21 May 2002 | 24 Jul 2003 | British | 71 years |
| Vyvyan James Attwood | Director | 12 Jan 1994 | 2 Dec 1996 | British | 77 years |