| Alastair Bradshaw | Secretary | 16 Dec 2011 | 3 Mar 2014 | - | - |
| Alexandra Dadd | Secretary | 30 Jul 2008 | 2 Feb 2009 | Other | - |
| Anthony Roy Foster | Secretary | 20 Jan 2006 | 15 Feb 2008 | British | - |
| Anthony William Pidgley | Director | 23 Mar 2015 | 26 Jun 2020 | British | 78 years |
| Brian Richard Davies | Secretary | 1 Feb 1993 | 1 Jul 1994 | British | - |
| Christopher Hewetson Payne | Director | 20 May 2003 | 19 Jan 2005 | British | 66 years |
| Claire Puttergill | Secretary | 1 Oct 1996 | 17 Oct 2003 | British | - |
| David Anthony Fox | Director | 1 May 2001 | 30 Sept 2022 | British | 58 years |
| Elaine Anne Driver | Secretary | 3 Mar 2014 | 8 Aug 2016 | - | - |
| Elizabeth Taylor | Secretary | 1 Feb 2004 | 30 Sept 2005 | British | - |
| Gemma Parsons | Secretary | 8 Aug 2016 | 4 May 2018 | - | - |
| Graham John Roper | Director | 1 Feb 1993 | 31 Jan 1999 | British | 79 years |
| Jared Stephen Philip Cranney | Secretary | 4 May 2018 | 21 Oct 2019 | - | - |
| John Richard Jacobs | Director | 1 Feb 1993 | 7 Jul 1998 | British | 81 years |
| Julian Paul Hodder | Director | 20 May 2003 | 26 Sept 2012 | British | 54 years |
| Mark Coleman Fitzpatrick | Director | 17 Mar 1999 | 28 Feb 2002 | British | 62 years |
| Nicolas Guy Simpkin | Director | 1 Oct 2009 | 23 Sept 2015 | British | 56 years |
| Patrick Francis Sweetnam | Director | 1 May 2001 | 31 Oct 2003 | British | 74 years |
| Paul Alan Gibbs | Director | 1 Feb 1993 | 11 Jun 1993 | British | 65 years |
| Paul Sellars | Secretary | 1 Jul 1994 | 1 Oct 1996 | British | - |
| Peter John Francis | Director | 1 Feb 1993 | 31 Mar 1996 | British | 72 years |
| Richard James Stearn | Secretary | 2 Feb 2009 | 16 Dec 2011 | British | - |
| Robert Charles Grenville Perrins | Secretary | 15 Feb 2008 | 30 Jul 2008 | British | - |
| Roger St John Hulton Lewis | Director | 6 Jul 1998 | 30 Apr 2001 | British | 78 years |
| Terence Edward Sullivan | Director | 6 Jul 1995 | 6 Feb 1998 | British | 67 years |
