| Alasdair Marnoch | Director | 2 Jun 2006 | 31 May 2012 | British | 63 years |
| Anthony Peter Dawe | Director | 15 Nov 1994 | 5 Jan 1995 | British | 87 years |
| Benjamin Oliver Bramhall | Director | 24 Mar 2016 | 11 Jan 2018 | British | 49 years |
| Bernard James Jennings | Director | 22 Sept 1992 | 20 Jul 1993 | British | 76 years |
| Catherine Anne Noble | Director | 25 Mar 2013 | 21 Nov 2015 | British | 67 years |
| Charles Patrick King-farlow | Director | 22 Sept 1992 | 20 Jul 1993 | British | 87 years |
| Christopher Pearson Fry | Director | 6 Jul 1992 | 1 Feb 1994 | British | 80 years |
| Clive Campbell Holmes | Director | 6 Jul 1992 | 15 Nov 1994 | British | 76 years |
| Colin Edward Marsh | Director | 20 Jul 1993 | 29 Mar 2006 | British | 76 years |
| David Lyndon Jones | Director | 1 Feb 2010 | 31 Mar 2015 | British | 70 years |
| Derek Leslie Meades | Director | 22 Jul 2005 | 31 May 2006 | British | 73 years |
| Frank Stevenson Jones | Director | 8 Jul 2005 | 14 Mar 2006 | British | 80 years |
| Graham Charles Withers | Director | 28 Apr 2009 | 22 Mar 2017 | British | 74 years |
| Ian Nash | Secretary | 11 Jan 2018 | 28 Feb 2023 | - | - |
| James Anthony Angus Samuels | Director | 11 Jan 2018 | 23 Feb 2018 | British | 76 years |
| James Anthony Salter | Secretary | 8 Jul 2005 | 8 Feb 2006 | British | - |
| Jeffrey Peter Hunt | Director | 1 Jul 2013 | 27 Mar 2017 | British | 55 years |
| John Malcolm Cunliffe | Director | 28 Nov 1997 | 22 Jun 2000 | British | 91 years |
| Jonathan Samuel Bernstein | Director | 27 Mar 2017 | 11 Jan 2018 | British | 58 years |
| Keith John Burgess | Secretary | 15 Feb 2000 | 8 Jul 2005 | British | - |
| Kenneth John Mckelvey | Director | 11 Jan 2018 | 23 Feb 2018 | British | 70 years |
| Michael John Hutchison | Director | 6 Jul 1992 | 8 Jul 2005 | British | 79 years |
| Michael Robert Arthur Ainslie | Director | 1 Nov 2015 | 11 Jan 2018 | British | 65 years |
| Paul Gareth Cuff | Director | 27 Mar 2017 | 11 Jan 2018 | British | 50 years |
| Peter Charles Stahelin | Secretary | 8 Feb 2006 | 23 Feb 2007 | British | - |
| Richard William Treganowan | Secretary | 6 Jul 1992 | 15 Feb 2000 | British | - |
| Robert James Birmingham | Director | 22 Sept 1992 | 27 Mar 2017 | British | 76 years |
| Roger Malcolm Westwood | Director | 6 Jul 1992 | 8 Jul 2005 | British | 80 years |
| Sharon Anne Atherton | Secretary | 23 Feb 2007 | 21 Feb 2013 | British | - |
| Steven St John Gordon Ross | Director | 22 Sept 1992 | 9 Jan 2010 | British | 75 years |
| Timothy Michael Robinson | Director | 1 Feb 2006 | 19 Apr 2010 | British | 63 years |