| Alasdair John Mackinnon | Director | 1 Oct 2002 | 14 Jan 2004 | British | 48 years |
| Alasdair John Mackinnon | Secretary | 1 Oct 2002 | 14 Jan 2004 | British | - |
| Andrew David Knoyle Wood | Director | 4 Feb 2011 | 31 May 2018 | British | 78 years |
| Geoffrey Alan Hazlewood | Director | 19 Mar 2004 | 13 Oct 2006 | British | 53 years |
| Iain Hallifax | Director | 27 Jun 1997 | 31 Aug 2000 | British | 75 years |
| James Douglas Beaumont Cotton | Director | 28 Jun 1994 | 30 Jul 2007 | British | 84 years |
| James Stewart Hall | Director | N/A | 20 Aug 2025 | British | 71 years |
| Jamesjohn Austin | Director | N/A | 31 Mar 2025 | British | 66 years |
| Jamesjohn Austin | Secretary | 14 Jan 2004 | 31 Mar 2025 | British | - |
| Jane Victoria Macdonald | Director | 12 Sept 1996 | 1 Oct 2002 | British | 55 years |
| Jane Victoria Macdonald | Secretary | 12 Sept 1996 | 1 Oct 2002 | British | - |
| Joan Annette Whybrow | Director | 11 Jan 1992 | 30 May 2008 | British | 75 years |
| Leah Finnegan | Director | 8 Jan 2010 | 31 Jul 2018 | British | 45 years |
| Lynne Mairi Hill | Director | 7 Oct 2014 | 7 Apr 2016 | British | 40 years |
| Mark Andrew Henry | Director | 29 Oct 2010 | 31 May 2022 | British | 57 years |
| Nathan James Muskett | Director | 31 Jul 2006 | 19 Sept 2014 | British | 45 years |
| Nicholas John Burnett | Director | 1 Jun 2011 | 31 May 2020 | British | 72 years |
| Nigel Howard Thompson | Director | 1 Jun 2011 | 31 May 2022 | British | 68 years |
| Paul Nigel Matthews | Director | 26 Aug 2004 | 5 Dec 2013 | British | 73 years |
| Paul Robert Thomas Pearce | Director | 31 Aug 2000 | 31 Jul 2003 | British | 58 years |
| Paul Roland Hughes | Director | 11 Jan 1992 | 12 Sept 1996 | British | 70 years |
| Paul Roland Hughes | Secretary | 11 Jan 1992 | 12 Sept 1996 | British | - |
| Paul Thomas Sleight | Director | 26 Aug 2004 | 13 Mar 2007 | British | 52 years |
| Philip William George | Director | 11 Jan 1992 | 26 Jul 1995 | British | 75 years |
| Richard James Payne | Director | 1 Jun 2011 | 12 Jan 2015 | British | 61 years |
| Richard John Larner | Director | 7 Nov 1994 | 27 Jun 1997 | British | 65 years |
| Thomas Charles Siggers | Director | 14 Nov 2006 | 29 Oct 2010 | British | 47 years |
| Virginia Vere French | Director | 5 Mar 2009 | 10 Apr 2015 | British | 70 years |
| Walter Douglas Robinson Turner | Director | 21 Apr 1992 | 14 Mar 2019 | British | 66 years |