| Alan Ross Mcniven | Nominee Director | 21 Jun 1994 | 22 Jun 1994 | British | 76 years |
| Charles Nicholas Brown | Secretary | 22 Jun 1994 | 29 Dec 1994 | British | - |
| Christopher Edward Milne Watson | Director | 27 Oct 2000 | 21 Mar 2005 | British | 59 years |
| Christopher Edward Milne Watson | Secretary | 1 Jan 2001 | 24 Nov 2003 | British | - |
| Edwin Charles Garrett | Director | 22 Jun 1994 | 31 Dec 2000 | British | 94 years |
| Edwin Charles Garrett | Director | 31 Dec 2000 | 13 Apr 2005 | British | 94 years |
| Edwin Charles Garrett | Secretary | 29 Dec 1994 | 31 Dec 2000 | British | - |
| George Graeme Park | Director | 21 Mar 2005 | 22 Nov 2006 | British | 57 years |
| Ian Clark Wood | Director | 22 Jun 1994 | 31 Dec 2000 | British | 84 years |
| Ian Johnson | Director | 13 Apr 2005 | 1 Sept 2010 | British | 75 years |
| Ian Johnson | Secretary | 24 Nov 2003 | 1 Sept 2010 | British | - |
| Michael Dear | Director | 22 Nov 2006 | 16 Nov 2009 | British | 55 years |
| Robert Muirhead Birnie Brown | Director | 1 Sept 2010 | 18 Dec 2015 | British | 56 years |
| Robert Muirhead Birnie Brown | Secretary | 1 Sept 2010 | 18 Dec 2015 | - | - |
| Robert Muirhead Birnie Brown | Secretary | 1 Sept 2010 | 1 Sept 2010 | - | - |
| Sandra Elizabeth Middleton | Nominee Secretary | 21 Jun 1994 | 22 Jun 1994 | British | - |