| Alan Frederick Lutman | Director | 16 Jan 2004 | 27 Mar 2009 | British | 78 years |
| Alan Frederick Lutman | Secretary | 16 Jan 2004 | 27 Mar 2009 | British | - |
| Brian Charles Dice | Director | 24 Apr 1998 | 12 Feb 2003 | British | 90 years |
| Cornel John Howells | Secretary | 1 Apr 1998 | 16 Jan 2004 | British | - |
| David Brownfield Wain | Director | 24 Apr 1998 | 12 Jun 2003 | British | 99 years |
| David John Fletcher | Director | 24 Apr 1998 | 28 Nov 2008 | British | 84 years |
| Graham Gordon Clark | Director | 1 Apr 1998 | 16 Jan 2004 | British | 69 years |
| Harry Richard Thomas Shackleton | Director | 24 Apr 1998 | 23 Apr 1999 | British | 96 years |
| Ian David John Valder | Director | 1 Apr 1998 | 31 Mar 2014 | British | 88 years |
| Laurence Richard Simon Newman | Director | 28 Nov 2008 | 31 Mar 2014 | British | 78 years |
| Michael Charles Brooksbank | Director | 16 Jan 2004 | 16 Oct 2004 | British | 65 years |
| Peter Charles Weller Juniper | Director | 30 Mar 2009 | 20 Oct 2014 | British | 73 years |
| Peter Charles Weller Juniper | Secretary | 30 Mar 2009 | 1 Oct 2014 | British | - |
| Richard Jeremy Duffy | Director | 1 Apr 1998 | 20 Apr 2001 | British | 85 years |
| Roger Gordon Hanbury | Director | 16 Jan 2004 | 16 Dec 2014 | British | 74 years |
| Vincent Patrick Moran | Director | 16 Dec 2014 | 8 Dec 2015 | British | 70 years |