| Alan Ronald Cook | Director | 19 Feb 2001 | 28 Jun 2002 | British | 72 years |
| Andrew David Briggs | Director | 20 Feb 2004 | 2 Oct 2006 | British | 59 years |
| Andrew Michael Crossley | Director | 13 Mar 2007 | 6 Jun 2013 | British | 69 years |
| Brian Medhurst | Director | 12 Jun 1992 | 31 Mar 1994 | British | 90 years |
| Cheick Tidjane Thiam | Director | 14 Apr 2008 | 31 May 2015 | French | 63 years |
| Clare Jane Bousfield | Director | 10 Nov 2016 | 30 Sept 2023 | British | 57 years |
| Clive Peter Adamson | Director | 8 Jun 2015 | 13 Jan 2025 | British | 69 years |
| David George Green | Secretary | 1 Sept 1997 | 27 Mar 2000 | British | - |
| David John Belsham | Director | 25 May 1999 | 7 Jul 2014 | British | 66 years |
| Derek Alan Higgs | Director | 4 Mar 1996 | 30 Nov 2000 | British | 81 years |
| Finbar Anthony O'dwyer | Director | 15 Jan 2009 | 24 May 2013 | Irish | 54 years |
| Gary Paul John Shaughnessy | Director | 12 Jun 2006 | 25 Sept 2008 | British | 59 years |
| Gregory Mark Wood | Director | 21 Jun 2001 | 17 Oct 2005 | British | 72 years |
| Guy Robin Strickland Dunlop | Secretary | 22 Jan 2016 | 31 Mar 2017 | - | - |
| Hamayou Akbar Hussain | Director | 15 Mar 2012 | 19 Jul 2016 | British | 53 years |
| Hugh Royston Jenkins | Director | 12 Jun 1992 | 31 Dec 1995 | British | 92 years |
| Ian Bothamley | Secretary | 30 Nov 2022 | 4 Dec 2023 | - | - |
| Ian Bruce Owen | Director | 18 Apr 2018 | 30 Jun 2025 | British | 72 years |
| Isabel Frances Hudson | Director | 19 Nov 2004 | 2 Aug 2005 | British | 66 years |
| Jacqueline Ann Cross | Secretary | 23 Apr 2001 | 23 Jul 2001 | British | - |
| Jacqueline Ann Cross | Secretary | 23 Jul 2001 | 23 Jul 2001 | British | - |
| Jacqueline Ann Fountain | Secretary | 1 Jun 2015 | 22 Jan 2016 | - | - |
| Jacqueline Ann Fountain | Secretary | 13 Feb 2006 | 7 Sept 2006 | British | - |
| Jacqueline Hunt | Director | 1 Oct 2013 | 2 Nov 2015 | British | 57 years |
| James Harry Sutcliffe | Director | 11 Jan 1993 | 30 Sept 1997 | British | 69 years |
| Jennifer Anne Owens | Secretary | 30 Sept 2017 | 30 Nov 2022 | - | - |
| Jeremy Spencer Deeks | Director | 21 Oct 2016 | 31 Oct 2017 | British | 55 years |
| Joanne Dawson | Director | 20 Jul 2016 | 1 Apr 2021 | British | 63 years |
| John Alexander Worth | Director | 18 Feb 2004 | 19 Oct 2005 | British | 62 years |
| John Anthony Freeman | Director | 12 Jun 1992 | 30 Sept 1994 | British | 88 years |
| John Hunter Maxwell | Director | 1 Jun 1994 | 30 Nov 1996 | British | 81 years |
| John Kenneth Elbourne | Director | 20 May 1997 | 15 Jun 2001 | British | 81 years |
| John William Foley | Director | 19 Jan 2016 | 14 Sept 2022 | British | 69 years |
| Jonathan William Bloomer | Director | 9 Jan 1995 | 5 May 2005 | British | 71 years |
| Keith Leonard Bedell Pearce | Director | 12 Jun 1992 | 30 Nov 2001 | British | 79 years |
| Kieran Mark Coleman | Director | 4 May 2006 | 15 Dec 2006 | Irish | 56 years |
| Kim Stuart Lerche-thomsen | Director | 19 Feb 2001 | 5 Sept 2002 | British | 73 years |
| Mark Edward Tucker | Director | 4 Mar 1996 | 3 Dec 2001 | British | 68 years |
| Mark Edward Tucker | Director | 9 May 2005 | 30 Jun 2009 | British | 68 years |
| Mark Thomas Fitzpatrick | Director | 17 Jul 2017 | 19 Sept 2019 | Irish | 57 years |
| Michael Andrew Wells | Director | 19 Jun 2015 | 29 Sept 2016 | American | 65 years |
| Michael George Newmarch | Director | 12 Jun 1992 | 23 Jan 1995 | British | 87 years |
| Michael John Lawrence | Director | 12 Jun 1992 | 31 Dec 1993 | British | 82 years |
| Michael John Moores | Director | 23 Apr 2001 | 2 Sept 2002 | British | 69 years |
| Michael John Yardley | Director | 20 May 2013 | 31 Dec 2017 | British | 69 years |
| Michael Jonathan Evans | Director | 17 Oct 2018 | 29 Jul 2020 | British | 64 years |
| Neil Anthony Berkett | Director | 15 Jul 2002 | 20 Jun 2003 | New Zealander | 70 years |
| Nicholas Edward Tucker Prettejohn | Director | 9 Jan 2006 | 30 Sept 2009 | British | 65 years |
| Nicolaos Andreas Nicandrou | Director | 28 Oct 2009 | 17 Jul 2017 | British | 60 years |
| Paul David Cooper | Director | 16 Sept 2019 | 6 May 2022 | British | 53 years |
| Paul Spencer | Director | 1 Jan 2016 | 5 Feb 2021 | British | 75 years |
| Peter Jack Nowell | Director | 12 Jun 1992 | 9 Apr 1999 | British | 77 years |
| Peter John Davis | Director | 1 May 1995 | 29 Feb 2000 | British | 84 years |
| Peter Robert Rawson | Secretary | 12 Jun 1992 | 1 Sept 1997 | British | - |
| Philip Arthur John Broadley | Director | 22 May 2000 | 15 Apr 2008 | British | 64 years |
| Richard Bennison | Director | 31 Aug 2016 | 24 Apr 2020 | British | 67 years |
| Richard Julian Field | Director | 23 Apr 2001 | 8 May 2003 | British | 62 years |
| Robert Alan Devey | Director | 16 Nov 2009 | 5 Sept 2013 | British | 57 years |
| Robert Michael Head | Director | 12 Jun 1992 | 31 Mar 1994 | British | 67 years |
| Robert Walker | Secretary | 23 Jul 2001 | 13 Feb 2006 | British | - |
| Rodney Pennington Baker-bates | Director | 25 Oct 1999 | 9 Nov 2001 | British | 81 years |
| Roger Charles Ramsden | Director | 21 Jul 2003 | 31 May 2006 | British | 65 years |
| Rosemary Harris | Director | 7 Nov 2005 | 2 Feb 2007 | British | 67 years |
| Roy Macdonald Nicolson | Director | 29 Oct 1997 | 31 Dec 2000 | British | 81 years |
| Simon Colin Mitchley | Secretary | 31 Mar 2017 | 30 Sept 2017 | - | - |
| Susan Doreen Windridge | Secretary | 27 Mar 2000 | 23 Apr 2001 | British | - |
| Susan Doreen Windridge | Secretary | 7 Sept 2006 | 31 May 2015 | British | - |
| Timothy James William Tookey | Director | 2 Sept 2002 | 16 Mar 2006 | British | 63 years |
| Wai-fong Au | Director | 18 May 2012 | 31 Aug 2015 | British | 69 years |