| Alan Robert Robertson | Director | 1 Apr 1999 | 14 May 2005 | British | 64 years |
| Christopher Graham Wigg | Director | 1 Sept 1997 | 11 Aug 2000 | British | 75 years |
| Eunice Ivy Payne | Secretary | 27 Jul 2012 | 25 Feb 2013 | - | - |
| Franco Martinelli | Director | 11 May 2005 | 16 Jun 2015 | British | 66 years |
| Gerald Malcolm Hough | Director | 3 Sept 1991 | 30 Jun 1994 | British | 96 years |
| Graham Stuart Foster | Director | 3 Sept 1991 | 31 Mar 1999 | British | 87 years |
| John Andrew Woollhead | Director | 11 Aug 2000 | 23 Dec 2004 | British | 65 years |
| John Andrew Woollhead | Secretary | 3 Sept 1991 | 23 Dec 2004 | British | - |
| Peter Charles Adams | Director | 1 Jul 1994 | 8 Aug 1996 | British | 73 years |
| Stanley Alan Royall Billiald | Director | 23 Jan 2006 | 24 Jun 2010 | Other | 82 years |
| Stanley Alan Royall Billiald | Secretary | 22 Nov 2004 | 1 Jul 2009 | Other | - |
| Valerie Francine Anne Teller | Secretary | 1 Jul 2009 | 27 Jul 2012 | British | - |
| Valerie Francine Anne Teller | Director | 24 Jun 2010 | 27 Jul 2012 | British | 47 years |