| Andrew Richard Jennings | Director | 5 Jul 1993 | 21 Mar 1996 | British | 77 years |
| Anne Claire Siddell | Director | 26 Mar 1996 | 31 Oct 1997 | British | 71 years |
| Anne Claire Siddell | Secretary | 6 Dec 1993 | 31 Oct 1997 | British | - |
| Colin David Elliot | Director | 1 May 2015 | 13 Aug 2018 | British | 61 years |
| David Alexander Robertson Adams | Director | 31 Oct 1997 | 8 Nov 2006 | British | 71 years |
| David Alexander Robertson Adams | Secretary | 31 Oct 1997 | 30 Jun 1998 | British | - |
| Donald Mccarthy | Director | 8 Nov 2006 | 2 Sept 2014 | British | 70 years |
| James Ralph Parnell Davies | Director | 8 Nov 1991 | 5 Jul 1993 | British | 88 years |
| James Ralph Parnell Davies | Secretary | 8 Nov 1991 | 5 Jul 1993 | British | - |
| John Coleman | Director | 22 Jan 1997 | 8 Nov 2006 | British | 73 years |
| John King | Director | 20 Dec 2006 | 1 Mar 2015 | British | 63 years |
| Mark Anthony Gifford | Director | 27 Nov 2007 | 30 Jun 2015 | British | 60 years |
| Nigel Oddy | Director | 1 Mar 2015 | 23 Apr 2017 | British | 65 years |
| Peter Geoffrey Hearsey | Director | 23 Apr 2017 | 7 Dec 2018 | British | 50 years |
| Richard John Scott | Director | 8 Nov 1991 | 12 Dec 1996 | British | 79 years |
| Richard John Scott | Secretary | 5 Jul 1993 | 6 Dec 1993 | British | - |
| Stefan John Cassar | Director | 8 Nov 2006 | 27 Nov 2007 | British | 61 years |