| Barry Peter Perrin | Director | 3 Aug 1998 | 20 Oct 2000 | British | 63 years |
| Bernard John Wiley | Director | 4 May 1992 | 8 Nov 1996 | British | 81 years |
| Brian Roland Walker | Director | 20 Oct 2000 | 26 Mar 2008 | British | 71 years |
| David Lynn Rhys Harris | Director | 4 May 1992 | 31 Dec 1997 | British | 84 years |
| David Lynn Rhys Harris | Secretary | 4 May 1992 | 1 Sept 1992 | British | - |
| David Shields Cowland | Director | 1 Jun 1993 | 8 Nov 1996 | British | 89 years |
| Douglas William Prentice | Director | 4 May 1992 | 15 Jul 1994 | British | 94 years |
| Ewan Thomas Anderson | Director | 30 May 2014 | 14 Apr 2015 | British | 60 years |
| Frederick Michael Green | Director | 4 May 1992 | 15 Mar 1993 | British | 83 years |
| George Rodney Ashman | Director | 1 Jun 1994 | 8 Nov 1996 | British | 86 years |
| Gregory William Mutch | Secretary | 1 Feb 2013 | 29 Sept 2015 | - | - |
| Haro Moushegh Bedelian | Director | 4 May 1992 | 31 Oct 1998 | British | 83 years |
| Hendrik Van Es | Director | 4 May 1992 | 8 Nov 1996 | British | 81 years |
| James Leonard Holland | Director | 2 Nov 1992 | 30 Jun 1996 | British | 88 years |
| John Stewart Barron | Director | 20 Oct 2000 | 30 Jun 2014 | British | 69 years |
| Keith Haverland Millard | Director | 14 Nov 1994 | 30 Sept 1996 | British | 84 years |
| Lawrence Anthony Hoskins | Director | 8 Nov 1996 | 28 Jun 2001 | British | 76 years |
| Nikolas William Weston | Secretary | 24 Jan 1994 | 10 Oct 2006 | British | - |
| Paul Edward Cochiese Ferguson | Secretary | 1 Sept 1992 | 24 Jan 1994 | British | - |
| Philip Hugh Morris | Secretary | 10 Oct 2006 | 30 Mar 2013 | British | - |
| Simon Charles Kirkpatrick | Director | 14 Apr 2015 | 14 Jun 2019 | British | 48 years |
| Terence Norman Mcdonald | Director | 4 May 1992 | 8 Nov 1996 | British | 77 years |
| Thomas Christopher Parker | Director | 4 May 1992 | 30 Jun 2000 | British | 87 years |