| Adrian Perry | Director | 8 Dec 1993 | 8 Dec 1997 | British | 67 years |
| Adrian Perry | Director | 6 Jan 1999 | 13 Nov 2018 | British | 67 years |
| Charles James Francis Sinclair | Director | 22 Dec 1992 | 30 Sept 2008 | British | 78 years |
| Charles Richard Cox | Director | 8 Dec 1997 | 6 Jan 1999 | Australian | 68 years |
| Edward David Abel Ram | Director | 22 Dec 1992 | 8 Dec 1993 | British | 92 years |
| John Gwilym Hemingway | Director | 22 Dec 1992 | 8 Dec 1993 | British | 95 years |
| John Peter Williams | Director | 8 Dec 1993 | 25 Mar 2011 | British | 73 years |
| John Peter Williams | Secretary | 22 Dec 1992 | 13 Aug 1996 | British | - |
| Martin William Howard Morgan | Director | 1 Oct 2008 | 31 May 2016 | British | 76 years |
| Nicholas David De Burgh Jennings | Secretary | 18 Jan 2000 | 1 Oct 2012 | British | - |
| Penelope Claire Chapman | Director | 25 Apr 2017 | 1 Jul 2017 | British | 59 years |
| Penelope Claire Chapman | Secretary | 1 Oct 2012 | 25 Apr 2017 | - | - |
| Roger Neil Gilbert | Director | 8 Dec 1997 | 6 Jan 1999 | British | 82 years |
| Shirley Georgina Michele Ryder | Secretary | 13 Aug 1996 | 18 Jan 2000 | British | - |
| Stephen Marius Gray | Director | 22 Dec 1992 | 8 Dec 1993 | British | 92 years |
| Stephen Wayne Daintith | Director | 28 Mar 2011 | 7 Apr 2017 | British | 62 years |
| Vere Harold Esmond Harmsworth | Director | 22 Dec 1992 | 8 Dec 1993 | British | 101 years |