| Alan Michael Holland | Director | 8 Feb 2013 | 30 Jun 2023 | British | 51 years |
| Allan Graham Gormly | Director | 1 Jul 1994 | 15 May 2003 | British | 88 years |
| Amanda Whalley | Secretary | 14 Aug 2007 | 2 Jan 2008 | British | - |
| Andrew Stephen Gulliford | Director | 8 Feb 2013 | 30 Jun 2023 | British | 63 years |
| Ann Octavia Peters | Director | 4 Oct 2012 | 31 Jan 2025 | British | 56 years |
| David Crawford Bridges | Director | 16 Jul 2010 | 23 Mar 2012 | British | 58 years |
| David Ellis Marlow | Director | 15 Dec 1992 | 15 May 2003 | British | 90 years |
| David John Rivers Sleath | Director | 25 Aug 2009 | 31 Dec 2023 | British | 64 years |
| David Scotland | Director | 1 Jan 2003 | 24 Aug 2009 | British | 77 years |
| Douglas Frank Gardner | Director | 26 Jun 1992 | 11 Apr 2000 | British | 82 years |
| Douglas Morpeth | Director | 26 Jun 1992 | 28 Jun 1994 | British | 101 years |
| Elizabeth Ann Blease | Secretary | 25 Aug 2009 | 3 Nov 2021 | Other | - |
| Gareth John Osborn | Director | 16 Jul 2010 | 4 Oct 2012 | British | 63 years |
| Gareth John Osborn | Director | 8 Feb 2013 | 31 Dec 2019 | British | 63 years |
| Gilbert Leversedge | Secretary | 26 Jun 1992 | 7 Jan 1999 | British | - |
| Helen Frances Silver | Secretary | 17 Apr 2007 | 14 Aug 2007 | British | - |
| Henry Stuart Axton | Director | 26 Jun 1992 | 22 Jun 1993 | British | 102 years |
| Ian Calvert Sutcliffe | Director | 25 Aug 2009 | 30 Mar 2011 | British | 66 years |
| Ian David Coull | Director | 25 Aug 2009 | 5 Apr 2011 | British | 75 years |
| John Graham Cuckney | Director | 26 Jun 1992 | 12 Jun 1996 | British | 100 years |
| John Stuart Rink | Director | 18 Mar 2003 | 10 May 2006 | British | 79 years |
| Julia Foo | Secretary | 3 Nov 2021 | 23 May 2023 | - | - |
| Justin Richard Read | Director | 3 Oct 2011 | 23 Nov 2016 | British | 64 years |
| Leslie John Lane | Director | 26 Jun 1992 | 2 Aug 1992 | British | 96 years |
| Louise Alexandra Virginia Charlotte Patten | Director | 1 Jun 2001 | 24 Aug 2009 | British | 71 years |
| Mark Lees Young | Secretary | 27 Sept 2004 | 15 May 2006 | British | - |
| Mark Moran | Director | 7 Mar 2008 | 24 Aug 2009 | British | 65 years |
| Michael Hamilton | Director | 26 Apr 1994 | 20 May 1997 | British | 99 years |
| Michael Rodney Newton Moore | Director | 1 Jan 1997 | 10 May 2006 | British | 89 years |
| Nicholas Rodney Lowther Fry | Director | 18 Mar 2003 | 24 Aug 2009 | British | 78 years |
| Nigel Anthony Watts | Secretary | 7 Jan 1999 | 19 May 2003 | British | - |
| Peter Allan Dawson | Director | 5 Dec 2007 | 25 Aug 2009 | British | 54 years |
| Philip Anthony Redding | Director | 16 Jul 2010 | 4 Oct 2012 | British | 57 years |
| Richard Baker Wilbraham | Director | 26 Jun 1992 | 27 Apr 2001 | British | 91 years |
| Richard Howell | Secretary | 2 Jan 2008 | 25 Aug 2009 | British | - |
| Simon Andrew Carlyon | Director | 4 Oct 2012 | 30 Jun 2015 | Australian | 52 years |
| Simon Nicholas Wilbraham | Secretary | 15 May 2006 | 17 Apr 2007 | British | - |
| Sir Michael Beetham | Director | 26 Jun 1992 | 22 Jun 1993 | British | 102 years |
| Soumen Das | Director | 5 May 2017 | 31 Dec 2023 | British | 49 years |
| Stephen Clive Harris | Director | 1 Sept 2006 | 24 Aug 2009 | British | 67 years |
| Steven Daniel Lee | Director | 5 Dec 2007 | 25 Aug 2009 | British | 68 years |
| Steven Jonathan Owen | Director | 26 Jun 1992 | 25 Aug 2009 | British | 68 years |
| Susan Elizabeth Dixon | Secretary | 19 May 2003 | 27 Sept 2004 | British | - |
| Terence John Nagle | Director | 26 Jun 1992 | 31 May 1997 | British | 83 years |
| Timothy Clive Wheeler | Director | 1 Jun 1997 | 2 Mar 2009 | United Kingdom | 66 years |