| Andrea Rose | Director | 13 Sept 2007 | 17 Jun 2011 | British | 62 years |
| Andrew Robert Gray | Director | 1 Aug 2012 | 7 Aug 2015 | British | 63 years |
| Arthur William George Patrick Hay Kinnoull | Director | 1 Jan 1994 | 24 Apr 1997 | British | 91 years |
| Brian Geoffrey Fox | Director | 4 Dec 1992 | 7 Jul 1997 | British | 75 years |
| Christopher Smith | Director | 7 Jul 1997 | 8 Feb 2001 | British | 70 years |
| Christopher Smith | Secretary | 8 Dec 1997 | 30 Dec 2000 | British | - |
| Diane Susan Phillips | Director | 4 Dec 1992 | 31 Mar 1994 | British | 84 years |
| Harold John Cleminson | Director | 1 Apr 1995 | 7 Jul 1997 | British | 70 years |
| Iain David Smith | Director | 7 Jul 1997 | 31 Mar 2003 | British | 74 years |
| Ian Ashley Craig | Director | 5 Mar 2014 | 15 Jun 2015 | British | 67 years |
| Jayne Williams | Director | 5 Mar 2014 | 15 Jun 2015 | British | 61 years |
| John Alan Cumming | Director | 4 Dec 1992 | 4 Nov 1993 | British | 94 years |
| John Mark Edwards | Secretary | 4 Dec 1992 | 1 Apr 1995 | British | - |
| Julie Roddy | Director | 17 Jun 2011 | 5 Jun 2013 | American | 68 years |
| Karen Michelle Connell | Director | 5 Jun 2013 | 28 Feb 2014 | British | 57 years |
| Kathryn Margaret Reid | Secretary | 1 Apr 1995 | 8 Dec 1997 | British | - |
| Keith James Malkin | Director | 28 Mar 2003 | 31 Aug 2004 | British | 68 years |
| Michael Anthony Jennings | Director | 1 Jan 1997 | 22 Feb 1999 | British | 73 years |
| Michael Edward Tuke | Director | 4 Dec 1992 | 31 Dec 1996 | British | 88 years |
| Peter Anthony Carr | Director | 4 Dec 1992 | 31 Dec 1995 | British | 72 years |
| Peter Charles Burton | Director | 31 Dec 1996 | 17 Dec 1997 | British | 75 years |
| Richard John Groom | Director | 1 Jul 1994 | 7 Jul 1997 | British | 84 years |
| Richard William Griffith Deeprose | Director | 28 Mar 2003 | 13 Sept 2007 | British | 74 years |
| Simon Nicholas Lewis Woolcott | Director | 8 Feb 2001 | 28 Feb 2003 | British | 70 years |
| Trevor Baker | Director | 4 Dec 1992 | 1 Jan 1995 | British | 76 years |
| William Berry Templeton | Director | 4 Dec 1992 | 1 Jan 1995 | British | 101 years |