| David George Rawdon Wansbrough | Director | 9 Jan 1992 | 3 Aug 1998 | British | 84 years |
| Edward Frederick Sloan Thompson | Director | 20 Nov 1998 | 24 Nov 1999 | Scottish | 74 years |
| Edward Frederick Sloan Thompson | Secretary | N/A | 24 Nov 1999 | Scottish | - |
| Ian Salkeld | Director | 9 Jan 1992 | 4 Feb 1994 | British | 71 years |
| Jonathan Peter Baker | Director | 9 Jan 1992 | 30 Jun 2000 | British | 78 years |
| Kenneth William Landsberg | Director | 17 Jul 1997 | 31 Mar 2014 | British | 68 years |
| Martin Makey | Director | 9 Jan 1992 | 30 Sept 1998 | British | 74 years |
| Paul Scott Thomas | Director | 17 Jul 1997 | 28 Feb 2003 | British | 69 years |
| Paul Sears Viita | Director | 9 Jan 1992 | 31 Jul 1992 | American | 78 years |
| Roger Owen Hay | Director | 31 Dec 1992 | 31 Mar 1998 | British | 83 years |
| Sean Patrick Whelan | Director | 19 Feb 2008 | 14 Jul 2014 | Irish | 59 years |
| Stephen John Rodgers Dawson | Director | 9 Jan 1992 | 5 Aug 2003 | British | 80 years |
| Stephen John Tudge | Director | 5 Aug 2003 | 14 Jul 2014 | British | 61 years |
| Timothy David Raffle | Director | 9 Jul 1999 | 14 Jul 2014 | British | 64 years |