| Andrew Harris | Director | 5 Feb 2008 | 24 Dec 2021 | British | 59 years |
| David France | Director | 31 Dec 1995 | 1 Nov 1996 | British | 78 years |
| David Hall | Director | 28 Jun 1996 | 6 Nov 2006 | British | 71 years |
| David Hall | Secretary | 14 Mar 1997 | 1 Apr 2002 | British | - |
| David Launcen Pentz | Director | 28 May 1991 | 1 Nov 1992 | British | 87 years |
| David Michael Drury | Director | 14 Oct 2005 | 1 Jan 2009 | British | 57 years |
| David Russell Vaughan Jones | Director | 15 Jun 2015 | 31 Dec 2021 | Welsh | 60 years |
| Domenico Andreis | Director | 11 Jan 2010 | 3 Jun 2010 | Italian | 66 years |
| Donald Moy | Director | 1 Nov 1991 | 1 Jan 1997 | British | 80 years |
| Dyfed Evans | Director | 21 Feb 2008 | 17 Dec 2008 | British | 60 years |
| Dyfed Evans | Director | 1 Apr 2002 | 16 Oct 2003 | British | 60 years |
| Elizabeth Jayne Glare Cooper | Secretary | 18 Jun 2007 | 31 Dec 2015 | British | - |
| George Michael Barton | Director | 6 Jul 2005 | 15 Jan 2009 | British | 75 years |
| George Michael Barton | Secretary | 6 Jul 2005 | 18 Jun 2007 | British | - |
| Iain Fulton | Director | 15 May 2003 | 17 Sept 2005 | British | 74 years |
| Ian Bishop | Director | 20 May 2005 | 27 Feb 2008 | British | 64 years |
| John Henry Archer Crooks | Director | 1 Nov 1991 | 18 Dec 1995 | British | 79 years |
| John Henry Black | Director | 28 Jun 1996 | 23 Dec 1999 | British | 77 years |
| Julian Piers William Jones | Director | 1 Apr 2002 | 21 May 2010 | British | 75 years |
| Karen Anne Sewell | Secretary | 15 Jul 2021 | 6 Mar 2025 | - | - |
| Kenneth Been | Director | 28 Jun 1996 | 3 Aug 2001 | Canadian | 73 years |
| Laurence Raymond Richards | Director | 28 May 1991 | 1 Oct 1992 | New Zealander | 84 years |
| Mark Fintan Gilligan | Director | 5 Feb 2008 | 15 Jun 2015 | Northern Irish | 59 years |
| Mark William Naysmith | Director | 15 Jul 2021 | 16 Dec 2024 | British | 60 years |
| Michael Andrew Young | Secretary | 1 Apr 2002 | 6 Jul 2005 | British | - |
| Michael David Patterson | Director | 30 Jan 2007 | 10 Aug 2010 | British | 58 years |
| Michael Leo Joseph Maher | Director | 11 Jan 2010 | 1 Oct 2010 | Irish | 75 years |
| Pascal Frank Meyer | Director | 3 Apr 2000 | 1 Oct 2002 | British | 61 years |
| Philip Newman | Director | 1 Apr 2002 | 29 Sept 2005 | British | 59 years |
| Pietro Varre | Director | 1 Oct 2002 | 3 Feb 2003 | Italian | 70 years |
| Ralph Leslie Keeble | Director | 30 Jan 2007 | 25 Jan 2008 | British | 73 years |
| Simon Copping | Director | 13 Oct 2015 | 16 Dec 2021 | British | 58 years |
| Zuhair Al Dhahir | Director | 28 May 1991 | 14 Mar 1997 | British | 87 years |
| Zuhair Al-dhahir | Secretary | 28 May 1991 | 14 Mar 1997 | British | - |