| Andrew Arthur Waugh | Secretary | 25 Nov 2003 | 22 Aug 2005 | British | - |
| Andrew John Allan | Director | 12 Sept 2012 | 12 Sept 2017 | British | 58 years |
| Beverley Jane Davies | Director | 13 Aug 2001 | 5 Sept 2012 | British | 74 years |
| Christopher Andrew Roberts | Director | 12 Apr 2012 | 11 Sept 2018 | British | 55 years |
| Christopher George Oglesby | Director | 12 Apr 2012 | 11 Sept 2018 | British | 59 years |
| Christopher Robin Fearns Fozard | Director | 30 Mar 1999 | 17 May 1999 | British | 75 years |
| David James Hedley | Secretary | 22 Aug 2005 | 12 Apr 2012 | British | - |
| David Shaw | Director | 21 May 1999 | 11 Jun 2009 | British | 76 years |
| David Shaw | Secretary | 21 May 1999 | 25 Nov 2003 | British | - |
| James Grigor | Director | 21 May 1999 | 30 Sept 2000 | British | 96 years |
| James William Pochin Nicholson | Director | 25 Nov 2004 | 12 Apr 2012 | British | 61 years |
| John Charles Allen | Director | 21 May 1999 | 15 Aug 2006 | Britist | 88 years |
| John Edwards | Director | 16 Jul 2009 | 12 Apr 2010 | British | 69 years |
| John Edwards | Secretary | 22 Aug 2005 | 10 Oct 2005 | British | - |
| John Hamilton Woodcock | Director | 21 May 1999 | 31 Dec 2008 | British | 91 years |
| Kevin James Crotty | Director | 12 Sept 2017 | 27 Nov 2018 | British | 50 years |
| Lynne Alison Barlow | Director | 27 Mar 2009 | 13 Aug 2012 | British | 60 years |
| Nicholas John Pochin | Director | 21 May 1999 | 25 Nov 2004 | British | 86 years |
| Peter John Folkman | Director | 28 Nov 2006 | 27 Mar 2009 | British | 81 years |
| Rowena May Burns | Director | 13 Aug 2012 | 31 Oct 2020 | British | 73 years |
| Rowena May Burns | Director | 12 Sept 2012 | 31 Oct 2012 | British | 73 years |
| Thomas Peter Renn | Director | 11 Sept 2018 | 15 Oct 2021 | British | 41 years |
| Udo Griffiths Pope | Nominee Secretary | 30 Mar 1999 | 17 May 1999 | British | - |
| William John Townson | Director | 21 May 1999 | 27 Mar 2009 | British | 78 years |