| Andrew Richard Wood | Director | 1 Apr 1995 | 16 Jun 2000 | British | 75 years |
| Christopher William Hindle | Director | 1 Aug 2023 | 14 Jul 2025 | British | 58 years |
| David Clark Elsbury | Director | 16 Jan 1993 | 13 Oct 1999 | British | 90 years |
| David Whittaker | Director | 31 Jan 2000 | 16 Jun 2000 | British | 82 years |
| David Whittaker | Secretary | 16 Jan 1993 | 31 Jan 2000 | British | - |
| Edward Beckwith Ashmore | Director | 16 Jan 1993 | 5 Jul 1994 | British | 107 years |
| Ernest Thomas Harrison | Director | 16 Jan 1993 | 31 Jan 2000 | British | 100 years |
| Ewen Angus Mccrorie | Director | 10 Apr 2017 | 1 Aug 2023 | British | 68 years |
| James Maxwell Kaye | Director | 16 Jan 1993 | 31 Mar 1995 | British | 89 years |
| Jean Yves Bernard Francois Haagen | Director | 30 Nov 2000 | 1 Sept 2004 | French | 62 years |
| John Victor Belcher | Director | 16 Jun 2000 | 30 Nov 2000 | British | 83 years |
| John Victor Belcher | Secretary | 31 Jan 2000 | 30 Nov 2000 | British | - |
| Lawrence Hammond | Director | 31 Dec 2007 | 31 Dec 2013 | British | 63 years |
| Michael William Peter Seabrook | Secretary | 30 Nov 2000 | 3 Feb 2025 | British | - |
| Peter John Rowley | Director | 1 Jan 2014 | 31 Aug 2015 | British | 72 years |
| Suzanne Jayne Stratton | Director | 1 Sept 2015 | 10 Apr 2017 | British | 54 years |
| William Liddell Spalding | Director | 16 Jan 1993 | 12 Jan 1997 | British | 115 years |
| William Paul Moffatt | Director | 1 Sept 2004 | 31 Dec 2007 | British | 70 years |
