| Alastair Muir Russell | Director | 1 Oct 2007 | 31 Aug 2009 | British | 77 years |
| Alexander Scott Bell | Director | 1 Aug 1996 | 31 Jul 2005 | British | 85 years |
| Andrew Charles Brown | Director | 1 Aug 2020 | 31 Jul 2024 | British | 69 years |
| Angela May Roger | Director | 1 Sept 2012 | 31 Aug 2016 | British | 72 years |
| Brian Edward Frederick Fender | Director | 1 Oct 1995 | 30 Sept 2001 | British | 92 years |
| Charles Martin Sydenham Sutcliffe | Director | 1 Sept 2001 | 31 Aug 2007 | British | 78 years |
| Christine Joyce Challis | Director | 1 Oct 1991 | 30 Sept 1997 | British | 86 years |
| Colin Dunlop Donald | Director | 1 Oct 1991 | 30 Jun 2004 | British | 92 years |
| David Croft Mcdonnell | Director | 1 Apr 2007 | 31 Mar 2016 | British | 83 years |
| David Guppy | Director | 1 Sept 2005 | 31 Aug 2012 | British | 82 years |
| David Guppy | Director | 30 Sept 2017 | 3 Dec 2019 | British | 82 years |
| David Harrison | Director | 1 Oct 1991 | 31 Aug 1994 | British | 96 years |
| David Stephen Eastwood | Director | 1 Jan 2007 | 31 Aug 2020 | English | 67 years |
| Diana Warwick | Director | 20 Jun 2001 | 31 Aug 2009 | British | 81 years |
| Edward Barry Orton Sherlock | Director | 1 Oct 1991 | 31 Jul 1996 | British | 94 years |
| Gareth Gwyn Roberts | Director | 1 Apr 1997 | 31 Mar 2001 | British | 86 years |
| Geoffrey Robson Talbot | Director | 1 Apr 1993 | 31 May 1998 | British | 85 years |
| Glynis Marie Breakwell | Director | 1 Sept 2009 | 31 Aug 2018 | British | 74 years |
| Graeme John Davies | Director | 1 Oct 1991 | 1 Oct 1995 | British | 89 years |
| Graeme John Davies | Director | 1 Apr 1996 | 31 Mar 2006 | British | 89 years |
| Howard Joseph Newby | Director | 1 Apr 2001 | 31 Jan 2006 | British | 79 years |
| Howard Robert Jacobs | Director | 1 Oct 2002 | 30 Sept 2012 | British | 74 years |
| Ian Montague Sherlock | Secretary | 1 Aug 2005 | 31 Mar 2016 | British | - |
| Ian Richard Maybury | Director | 1 Nov 2013 | 15 Dec 2021 | British | 63 years |
| Ivor Martin Crewe | Director | 1 Apr 2006 | 30 Sept 2007 | British | 81 years |
| Jane Luise Hutton | Director | 1 Nov 2015 | 10 Oct 2019 | British | 65 years |
| Janet Angela Crum Ewing | Director | 1 Oct 1997 | 30 Sept 2003 | British | 96 years |
| Jeremy Hill | Secretary | 31 Mar 2016 | 28 Mar 2019 | - | - |
| Joachim Max Goldstrom | Director | 1 Jun 1998 | 1 Sept 2001 | British | 97 years |
| John Peter Williams | Secretary | 1 Oct 1991 | 31 Jul 2005 | British | - |
| John Sparrow | Director | 1 Oct 1991 | 31 Mar 1996 | British | 93 years |
| John William Donald Trythall | Director | 1 Oct 2009 | 30 Sept 2017 | United Kingdom/usa | 82 years |
| John William Donald Trythall | Director | 1 Oct 1991 | 31 Aug 2005 | Usa | 82 years |
| Joseph William Devlin | Director | 1 Sept 2007 | 10 Oct 2015 | British | 67 years |
| Kenneth Francis Dibben | Director | 1 Oct 1991 | 31 Mar 1999 | British | 97 years |
| Kenneth John Richard Edwards | Director | 1 Sept 1994 | 31 Mar 1997 | British | 92 years |
| Kevin James Carter | Director | 1 Sept 2012 | 31 Aug 2021 | British | 74 years |
| Kirsten English | Director | 1 May 2014 | 31 Jan 2021 | British | 66 years |
| Leonard Collinson | Director | 1 Oct 1991 | 31 Jan 2004 | British | 92 years |
| Mark Fitzalan Howard | Director | 1 Apr 1993 | 31 Mar 2002 | British | 92 years |
| Martin Best Harris | Director | 1 Oct 1991 | 31 Mar 2015 | British | 82 years |
| Maureen Michele Merrison | Director | 1 Oct 2003 | 30 Sept 2009 | British | 88 years |
| Michael Geoffrey Butcher | Director | 1 Nov 2004 | 31 Jan 2014 | British | 79 years |
| Michael Ralph Merton | Director | 1 Feb 2014 | 31 Jan 2021 | United Kingdom | 75 years |
| Michael Rene Poisson | Director | 1 Nov 2012 | 31 Oct 2021 | British | 69 years |
| Michael Stuart Potts | Director | 1 Apr 1999 | 31 Mar 2007 | British | 89 years |
| Nicola Jane Katherine Mayo | Secretary | 28 Mar 2019 | 1 Oct 2022 | - | - |
| Raymond Percival St George Cazalet | Director | 1 Oct 1991 | 1 Apr 1993 | British | 95 years |
| Roger John Bull | Director | 1 Feb 2004 | 31 Mar 2014 | British | 86 years |
| Stephen Joseph Egan | Director | 1 Feb 2006 | 31 Dec 2006 | British | 68 years |
| Stephen Joseph Egan | Director | 6 Oct 2009 | 29 Mar 2012 | British | 68 years |
| Steve Wharton | Director | 1 Sept 2016 | 31 Aug 2020 | British | 64 years |
| Stuart Beaumont Palmer | Director | 31 Mar 2016 | 31 Mar 2019 | British | 83 years |
| Thomas Gilbert Halsall | Director | 1 Oct 1991 | 1 Apr 1993 | British | 101 years |
| Virginia Anne Holmes | Director | 1 Sept 2005 | 31 Aug 2013 | British | 66 years |
| Vito Antonio Muscatelli | Director | 1 Apr 2015 | 31 Mar 2024 | Italian | 64 years |