| Alistair Dougal Morrison | Director | 3 Dec 2002 | 6 Mar 2006 | British | 70 years |
| Allan Bridgewater | Director | 20 Jun 1997 | 31 Dec 1997 | British | 90 years |
| Andrew Robert Myles Brown | Director | 2 Feb 2016 | 22 Jul 2016 | British | 58 years |
| Annette Frances Howlett | Secretary | 1 Mar 1997 | 22 Sept 1999 | British | - |
| Barry Bryan Knights | Secretary | 5 Mar 1993 | 31 May 1993 | British | - |
| Brian Malcolm Hamilton Bussell | Director | 25 Aug 2010 | 27 Mar 2013 | British | 66 years |
| Bridget Fiona Mcintyre | Director | 20 May 1999 | 1 Sept 2000 | British | 65 years |
| Charles Andrew Anderson | Director | 1 Sept 2000 | 2 Oct 2000 | British | 71 years |
| Christopher Adam Jones | Director | 12 Sept 2016 | 17 Jun 2021 | British | 57 years |
| Christopher John Sewell | Director | 28 Feb 2001 | 31 Dec 2004 | British | 76 years |
| Clifford James Abrahams | Director | 1 Jul 2015 | 31 Dec 2015 | British | 59 years |
| David Anthony Norman | Director | 15 Oct 2007 | 12 May 2008 | British | 64 years |
| David Clayton | Director | 14 Dec 2015 | 31 Aug 2020 | British | 64 years |
| David Ernest Parker | Secretary | 1 Jun 1993 | 28 Feb 1997 | British | - |
| David Ernest Parker | Secretary | 22 Sept 1999 | 19 May 2000 | British | - |
| David Kenneth Watson | Director | 16 Dec 2003 | 28 Aug 2007 | British | 67 years |
| David Stephen Skinner | Director | 30 Mar 2017 | 16 Jul 2019 | British | 57 years |
| Edward Graham Jones | Secretary | 20 Jun 1997 | 27 May 1999 | British | - |
| Eric Michael Sandland | Director | 5 Mar 1993 | 30 Sept 1994 | British | 88 years |
| Geoffrey John Mason Shaw | Director | 5 Mar 1993 | 17 Aug 2000 | British | 83 years |
| Gerald Hubert Holtham | Director | 2 Oct 2000 | 24 Mar 2004 | British | 82 years |
| Gillian Barbara Cass | Director | 5 Jul 2016 | 8 Feb 2017 | British | 50 years |
| Gillian Margaret Vance | Director | 1 Sept 2000 | 2 Oct 2000 | British | 72 years |
| Gregory Robert Neilson | Director | 13 Feb 2018 | 24 Feb 2020 | British | 41 years |
| James Anthony Heyworth-dunne | Director | 1 Nov 1995 | 31 Oct 1999 | British | 82 years |
| James Leonard Tanner | Director | 13 May 2005 | 28 Feb 2008 | British | 66 years |
| Judith Buttigieg | Director | 11 Jun 2013 | 30 Apr 2014 | British | 57 years |
| Katherine Lucy Garrett-cox | Director | 31 Mar 2004 | 28 Feb 2007 | British | 59 years |
| Keith Jones | Director | 8 Nov 1999 | 1 Sept 2000 | British | 74 years |
| Keith Jones | Director | 2 Oct 2000 | 31 Dec 2006 | British | 74 years |
| Kiran Sidhu Dhaliwal | Director | 1 Jun 2022 | 31 Dec 2023 | British | 44 years |
| Malcolm John Le May | Director | 26 Apr 2002 | 10 Jan 2003 | British | 68 years |
| Mark Jeffrey Buckley | Director | 12 Jun 2013 | 27 Apr 2016 | American | 64 years |
| Martin Alexander Hall | Director | 2 Oct 2000 | 31 Aug 2001 | British | 67 years |
| Mary Elizabeth Ward | Secretary | 22 Sept 1999 | 18 Sept 2000 | British | - |
| Matthew Adam Atkinson | Director | 25 Feb 2020 | 30 Jun 2021 | British | 41 years |
| Maurice Gerard Quirke | Director | 3 Sept 2001 | 16 Dec 2003 | British | 66 years |
| Michael David Thomas Craston | Director | 9 Nov 2016 | 16 Apr 2024 | British | 68 years |
| Michael James Wentworth Waites | Director | 5 Mar 1993 | 19 Jun 1997 | British | 72 years |
| Michael Nicholas Biggs | Director | 15 Oct 1997 | 1 Sept 2000 | British | 74 years |
| Michael Norris Urmston | Director | 1 Sept 2000 | 28 Feb 2001 | British | 77 years |
| Michael Terence Kirsch | Director | 1 Sept 2000 | 2 Oct 2000 | British | 65 years |
| Nicholas Andrew Courtenay-smith | Director | 20 Jun 1997 | 2 Oct 2000 | British | 76 years |
| Nicholas David Alford | Director | 1 Sept 2003 | 1 Jun 2008 | British | 72 years |
| Patrick John Neville | Director | 10 Jan 2012 | 30 Jun 2015 | British | 66 years |
| Patrick Joseph Edward Smith | Director | 20 Jun 1997 | 21 Jul 1999 | British | 77 years |
| Paul Allan Goodwin | Director | 27 Mar 2013 | 31 May 2013 | British | 58 years |
| Paul Richard Davis | Director | 13 May 2003 | 13 May 2003 | British | 60 years |
| Peter Colin Frank Haynes | Director | 2 Oct 2000 | 19 Nov 2001 | British | 72 years |
| Peter Edward Hessey | Director | 1 Sept 2000 | 2 Oct 2000 | British | 75 years |
| Peter Robert Hales | Director | 1 Sept 2000 | 2 Oct 2000 | British | 80 years |
| Philip Arnold Beale | Director | 2 Oct 2000 | 31 Mar 2003 | British | 66 years |
| Philip Gordon Scott | Director | 5 Mar 1993 | 2 Oct 2000 | British | 72 years |
| Richard Alexei Warne | Director | 23 Apr 2008 | 30 Apr 2013 | British | 64 years |
| Richard John Harvey | Director | 1 Aug 1993 | 1 Sept 2000 | British | 76 years |
| Roger Bryan Pointer Ramsay | Director | 5 Mar 1993 | 19 Jun 1997 | British | 89 years |
| Siobhan Geraldine Boylan | Director | 3 Sept 2007 | 10 Jan 2012 | British | 57 years |
| Thomas Anthony Kelly | Director | 20 Jun 1997 | 31 Jan 1998 | British | 84 years |
| Thomas Patrick Howard | Director | 21 Apr 2017 | 13 Feb 2018 | Irish | 49 years |
| Thomas Patrick Howard | Director | 25 Jan 2021 | 31 Mar 2024 | Irish | 49 years |
| Timothy John Lucas | Director | 12 Jun 2013 | 30 Jun 2016 | British | 64 years |
| Timothy Richard Orton | Director | 2 Oct 2013 | 23 Apr 2015 | British | 55 years |