| Abbie Louisa Rees-browne | Secretary | 19 Oct 2018 | 14 Jan 2025 | - | - |
| Amanda Jane Beaton | Secretary | 13 Jul 2012 | 1 Dec 2024 | - | - |
| Andrew Paul Goss | Director | 7 Jan 2015 | 22 Mar 2018 | British | 67 years |
| Anthony Jones | Director | 19 Jan 1996 | 17 Jan 2002 | British | 81 years |
| Anthony Joseph Wright | Director | 1 May 1993 | 19 Jan 1996 | New Zealander | 73 years |
| Barbara Rosemarie Bergmeier | Director | 1 Jul 2022 | 31 Jan 2025 | German | 57 years |
| Bennie Warren Fowler | Director | 28 May 2003 | 16 Aug 2005 | American | 69 years |
| Bibiana Boerio | Director | 15 Sept 2004 | 15 Oct 2007 | American | 71 years |
| Bibiana Boerio | Director | 31 Jul 1995 | 1 Oct 2000 | United States | 71 years |
| Charles Gilbert Vacy Ash | Secretary | 24 Oct 2002 | 8 Feb 2006 | British | - |
| Charles Stephen Woolard | Director | 1 Oct 2000 | 31 Dec 2001 | Usa | 72 years |
| Clive Charles Page | Secretary | 17 May 1994 | 2 Jun 2008 | British | - |
| Clive Richard Ennos | Director | 28 Sept 1992 | 27 Oct 1997 | British | 93 years |
| David Alan Boole | Director | 28 Sept 1992 | 31 Jan 1996 | British | 78 years |
| David Arthur Perry | Secretary | 28 Sept 1992 | 17 May 1994 | British | - |
| David Miles Smith | Director | 1 Jan 2002 | 8 Feb 2010 | British | 64 years |
| David Owen | Director | 31 Jul 2020 | 31 Mar 2022 | British | 54 years |
| Desmond Thurlby | Director | 10 Jun 2008 | 16 Mar 2010 | British | 61 years |
| Ermal Mckinley Faulkner | Director | 17 Nov 2008 | 1 Aug 2009 | United States | 57 years |
| Felix Brautigam | Director | 1 Apr 2018 | 30 Jun 2021 | German | 58 years |
| Francois Alain Dossa | Director | 7 Jun 2021 | 30 Aug 2024 | French | 62 years |
| Frank Lazzaro | Director | 22 Nov 2005 | 7 Mar 2008 | Australian | 65 years |
| Geoffrey Paul Polites | Director | 16 Aug 2005 | 20 Apr 2008 | Australian | 78 years |
| Grant Alexander Mcpherson | Director | 1 Jul 2018 | 13 Dec 2021 | British | 59 years |
| Hanno Kirner | Director | 7 Jun 2016 | 31 Dec 2023 | German | 55 years |
| Hans Eric Gustavsson | Director | 30 Sept 2002 | 28 May 2003 | Swedish | 79 years |
| Helen Mary Mclintock | Secretary | 8 Feb 2006 | 27 Nov 2006 | British | - |
| Helen Mary Mclintock | Secretary | 30 May 2008 | 15 Aug 2008 | British | - |
| Helen Mary Mclintock | Secretary | 22 Feb 2010 | 25 Feb 2015 | British | - |
| Ian Jeffrey Harnett | Director | 7 Jun 2016 | 31 Jul 2020 | British | 64 years |
| Ian Stuart Callum | Director | 10 Jun 2008 | 16 Mar 2010 | British | 71 years |
| James Jerome Padilla | Director | 28 Sept 1992 | 10 Oct 1996 | American | 79 years |
| Jeremy Michael Vincent | Director | 17 Nov 2008 | 16 Mar 2010 | British | 66 years |
| John Frederick Edwards | Director | 28 Sept 1992 | 31 Jul 1995 | British | 77 years |
| Jonathan Browning | Director | 1 Jul 1999 | 31 Oct 2001 | British | 66 years |
| Jonathan Edward Osgood | Secretary | 13 Jul 2005 | 30 Jun 2008 | British | - |
| Joseph Greenwell | Director | 16 Feb 1996 | 31 Dec 1999 | British | 74 years |
| Joseph Greenwell | Director | 2 Dec 2003 | 16 Aug 2005 | British | 74 years |
| Keith John Benjamin | Secretary | 19 Oct 2018 | 20 Sept 2022 | - | - |
| Keith John Benjamin | Director | 16 Nov 2009 | 16 Mar 2010 | British | 69 years |
| Kenneth David Matheson Gregor | Director | 10 Jun 2008 | 1 Jun 2019 | British | 58 years |
| Lewis William Killcross Booth | Director | 22 Nov 2005 | 2 Jun 2008 | British | 77 years |
| Mark Fields | Director | 1 Jul 2002 | 22 Nov 2005 | American | 64 years |
| Michael Charles Stewart Edwards | Secretary | 24 Oct 2002 | 28 Oct 2011 | Other | - |
| Michael David Wright | Director | 28 May 2003 | 15 Sept 2004 | British | 72 years |
| Michael David Wright | Director | 17 Nov 2008 | 31 Mar 2016 | British | 72 years |
| Michael Ernest Beasley | Director | 28 Sept 1992 | 31 May 2003 | British | 82 years |
| Michael Francis Marecki | Secretary | 24 Oct 2002 | 30 Jun 2005 | British | - |
| Michael Harrington Dale | Director | 28 Sept 1992 | 30 Apr 2000 | Us Citizen | 90 years |
| Michael James Mohan | Director | 10 Jun 2008 | 16 Mar 2010 | British | 59 years |
| Michael John Kinski | Director | 28 Sept 1992 | 30 Nov 1992 | British | 73 years |
| Michael Patrick O'driscoll | Director | 1 May 2000 | 28 May 2003 | American | 69 years |
| Michael Patrick O'driscoll | Director | 1 Aug 2007 | 31 Mar 2011 | British | 69 years |
| Nicholas Martin Rogers | Director | 7 Jun 2016 | 13 Dec 2021 | British | 58 years |
| Nicholas Paul Collins | Director | 22 Mar 2021 | 8 Dec 2023 | British | 51 years |
| Nicholas Scheele | Director | 28 Sept 1992 | 31 Mar 1999 | British American | 81 years |
| Nicolas Frank Barter | Director | 1 Jan 1997 | 30 Sept 2002 | British | 85 years |
| Paul William Cope | Director | 17 Nov 2008 | 31 Dec 2013 | British | 71 years |
| Philip Colin Popham | Director | 26 Apr 2012 | 31 Dec 2014 | British | 60 years |
| Philip Hodgkinson | Director | 17 Nov 2008 | 7 Jun 2016 | British | 66 years |
| Ralf Dieter Speth | Director | 22 Feb 2010 | 10 Sept 2020 | German | 70 years |
| Richard Martin Alistair Bielby | Secretary | 15 Oct 2007 | 21 Sept 2018 | Other | - |
| Robert Alan Dover | Director | 28 May 2003 | 2 Dec 2003 | British | 80 years |
| Robert Leon Shanks | Director | 28 May 2003 | 22 Nov 2005 | American | 72 years |
| Robert Simon Joyce | Director | 17 Nov 2008 | 16 Mar 2010 | British | 67 years |
| Roger George Putnam | Director | 28 Sept 1992 | 28 Feb 2002 | British | 80 years |
| Simon Morgan Warr | Director | 17 Nov 2008 | 16 Mar 2010 | British | 58 years |
| Stuart Grenville Dyble | Director | 1 Jan 2000 | 26 Jan 2007 | British | 61 years |
| Sukumaran Unni Kinattikara Menon | Director | 18 Mar 2010 | 17 Dec 2012 | Indian | 81 years |
| Susan Lesley Pearson | Secretary | 26 Feb 1999 | 31 Mar 2019 | Other | - |
| Thierry Yves Henri Bollore | Director | 10 Sept 2020 | 31 Dec 2022 | French | 62 years |
| Timothy Peter Davis | Director | 17 Nov 2008 | 16 Mar 2010 | British | 65 years |
| Wolfgang Karl Epple | Director | 1 Jan 2013 | 31 May 2016 | German | 72 years |
| Wolfgang Reitzle | Director | 1 Apr 1999 | 1 May 2002 | Germanh | 76 years |
| Wolfgang Stadler | Director | 17 Feb 2014 | 30 Jun 2018 | German | 67 years |