| BARRACLOUGH, Helen ACTIVE | Secretary | 14 Apr 2022 | | | | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| ESPERDY, Therese Marie ACTIVE | Director | 01 Dec 2025 | | United States | October 1960 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| HALLAS, Joanna Christine ACTIVE | Director | 01 Feb 2022 | | England | February 1970 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| KING, David ACTIVE | Director | 01 Jul 2025 | | United States | June 1956 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, United Kingdom |
| KONG, Garheng ACTIVE | Director | 01 Sep 2025 | | United States | June 1975 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, United Kingdom |
| LOWTH, Simon Jonathan ACTIVE | Director | 01 Jan 2024 | | United Kingdom | September 1961 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| MA, John Changzheng, Dr ACTIVE | Director | 17 Feb 2021 | | United States | August 1962 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| MAIDEN, Jeremy Kim ACTIVE | Director | 14 Sep 2023 | | United Kingdom | April 1961 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, United Kingdom |
| MAZUR-HOFSAESS, Katarzyna, Dr ACTIVE | Director | 01 Nov 2020 | | Germany | September 1963 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| NATH, Deepak ACTIVE | Director | 01 Apr 2022 | | United States | April 1972 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, United Kingdom |
| OWEN, Marc Ellis ACTIVE | Director | 01 Oct 2017 | | United States | October 1959 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| SOAMES, Rupert Christopher ACTIVE | Director | 26 Apr 2023 | | England | May 1959 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| STANLEY, Sybella Jane ACTIVE | Director | 01 Feb 2025 | | United Kingdom | June 1961 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, United Kingdom |
| CHAMBERS, Paul Richard RESIGNED | Secretary | 08 Apr 2002 | 15 May 2009 | | | 15 Adam Street, London, WC2N 6LA |
| PARSON, Michael George RESIGNED | Secretary | | 08 Apr 2002 | | | Grey Flags, Upavon, Wiltshire, SN9 6DT |
| SWABEY, Susan Margaret RESIGNED | Secretary | 15 May 2009 | 13 Apr 2022 | | | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| BAKER, Graham Timothy RESIGNED | Director | 01 Mar 2017 | 09 Apr 2020 | England | August 1968 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| BALI, Vinita RESIGNED | Director | 01 Dec 2014 | 31 Dec 2020 | India | November 1955 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| BARLOW, Ian Edward RESIGNED | Director | 05 Mar 2010 | 11 Apr 2019 | United Kingdom | September 1951 | 15, Adam Street, London, WC2N 6LA, United Kingdom |
| BERGER, Genevieve Bernadette, Prof RESIGNED | Director | 05 Mar 2010 | 01 Nov 2012 | United Kingdom | January 1955 | 15, Adam Street, London, WC2N 6LA |
| BLAIR, Jack Roger RESIGNED | Director | | 31 Dec 1998 | | May 1942 | 2230 Dogwood Meadows Cove, Germantown, Memphis, Tennessee 38139, Usa |
| BOHUON, Olivier Jean RESIGNED | Director | 01 Apr 2011 | 07 May 2018 | United Kingdom | January 1959 | 15, Adam Street, London, WC2N 6LA |
| BOTTOMLEY, Virginia Hilda Brunette Maxwell, Baroness RESIGNED | Director | 12 Apr 2012 | 14 Apr 2021 | United Kingdom | March 1948 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| BROWN, Julie Belita RESIGNED | Director | 04 Feb 2013 | 11 Jan 2017 | United Kingdom | March 1962 | 15 Adam Street, London, WC2N 6LA |
| BUCHANAN, John Gordon St Clair, Sir RESIGNED | Director | 03 Feb 2005 | 10 Apr 2014 | | June 1943 | 15 Adam Street, London, WC2N 6LA |
| CLEAVER, Anthony Brian, Sir RESIGNED | Director | 01 Mar 1993 | 28 Feb 2002 | England | April 1938 | 20 Groom Place, London, SW1X 7BA |
| DE SCHUTTER, Richard Urbain RESIGNED | Director | 01 Jan 2001 | 10 Apr 2014 | | May 1940 | 15 Adam Street, London, WC2N 6LA |
| DIGGELMANN, Roland Daniel RESIGNED | Director | 01 Mar 2018 | 31 Mar 2022 | Switzerland | April 1967 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| ENGSTROM, Erik RESIGNED | Director | 01 Jan 2015 | 31 Dec 2023 | England | June 1963 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| EUSTACE, Dudley Graham RESIGNED | Director | 10 Nov 1999 | 27 Apr 2006 | | July 1936 | 15 Adam Street, London, WC2N 6LA |
| FREESTONE, Robin Anthony David RESIGNED | Director | 01 Sep 2015 | 30 Sep 2022 | England | December 1958 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| FRIEDMAN, Michael Allen RESIGNED | Director | 11 Apr 2013 | 11 Apr 2019 | United States | August 1943 | 15, Adam Street, London, WC2N 6LA |
| FRYER, Alan Richmond RESIGNED | Director | | 26 Oct 2000 | | August 1941 | Hampton Barn, Snitterfield Road, Hampton Lucy, Warwickshire, CV35 8AU |
| HENNAH, Adrian RESIGNED | Director | 15 Jun 2006 | 31 Dec 2012 | United Kingdom | November 1957 | 15 Adam Street, London, WC2N 6LA |
| HOOLEY, Peter RESIGNED | Director | | 30 Jun 2006 | | June 1946 | 15 Adam Street, London, WC2N 6LA |
| ILLINGWORTH, David RESIGNED | Director | 08 Feb 2006 | 14 Apr 2011 | United Kingdom | October 1953 | 15, Adam Street, London, WC2N 6LA |
| KENNEDY, Francis, Sir RESIGNED | Director | | 31 Dec 1996 | | May 1926 | Flat 1 17 Chesham Street, London, SW1X 8ND |
| KIELY, Michael Joseph RESIGNED | Director | | 29 Sep 1992 | | September 1930 | 14 St Georges Road, Toorak, Victoria 3142, FOREIGN, Australia |
| KINDER, Eric RESIGNED | Director | | 30 Jun 1997 | | December 1927 | Revishaw Simonstone Lane, Burnley, Lancashire, BB12 7PN |
| KIRBY, Pamela Josephine, Dr RESIGNED | Director | 01 Mar 2002 | 31 Jul 2014 | | September 1953 | 15 Adam Street, London, WC2N 6LA |
| KNOWLTON, Warren D RESIGNED | Director | 01 Nov 2000 | 06 May 2010 | | July 1946 | 15 Adam Street, London, WC2N 6LA, Usa |
| LANE, Nancy Jane, Dr RESIGNED | Director | | 26 Oct 2000 | | November 1936 | 107 Barton Road, Cambridge, Cambridgeshire, CB3 9LL |
| LANKESTER, Timothy Patrick, Sir RESIGNED | Director | 01 Jun 1996 | 29 Apr 2003 | United Kingdom | April 1942 | 103 Albert Street, London, NW1 7LY |
| LARCOMBE, Brian Paul RESIGNED | Director | 01 Mar 2002 | 06 Apr 2017 | United Kingdom | August 1953 | 15 Adam Street, London, WC2N 6LA |
| MACPHERSON, Michael Alastair Fox RESIGNED | Director | | 23 Apr 1997 | | December 1944 | 58 Luttrell Avenue, Putney, London, SW15 6PE |
| MEDLOCK, Charles Richard Kenneth RESIGNED | Director | 09 Apr 2020 | 30 Apr 2024 | England | April 1960 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| NAWANA, Namal Sasrika RESIGNED | Director | 07 May 2018 | 31 Oct 2019 | United States | November 1970 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| NESMES, Anne-Francoise RESIGNED | Director | 27 Jul 2020 | 31 Mar 2024 | United Kingdom | May 1971 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| O'DONNELL, Christopher John, Sir RESIGNED | Director | 01 Sep 1992 | 31 Jul 2007 | | October 1946 | 15, Adam Street, London, WC2N 6LA |
| PAPA, Joseph RESIGNED | Director | 01 Aug 2008 | 12 Apr 2018 | United States | October 1955 | 15, Adam Street, London, WC2N 6LA |
| PEARSE, Brian Gerald, Sir RESIGNED | Director | 01 Mar 1993 | 28 Feb 2002 | | August 1933 | The Old Granary Upton, South Milton, Kingsbridge, Devon, TQ7 3JF |
| PIRAMAL, Ajay Gopikisan RESIGNED | Director | 01 Jan 2012 | 24 Mar 2014 | | August 1955 | Piramal Towers, 10th Floor, Peninsula Corporate Park,, Ganpatrao Kadam Marg,, Lower Parel (West) Mumbai, Naharashtra 400036, India |
| QUARTA, Roberto RESIGNED | Director | 04 Dec 2013 | 15 Sep 2023 | England | May 1949 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| RISLEY, Angela Susan RESIGNED | Director | 18 Sep 2017 | 06 May 2026 | England | May 1958 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |
| ROBINSON, John Harris RESIGNED | Director | | 31 Dec 1999 | England | December 1940 | 20 Mill Lane, Elloughton, Brough, East Yorkshire, HU15 1JL |
| ROGERS, John RESIGNED | Director | 01 Apr 2024 | 19 Aug 2026 | United States | July 1968 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, United Kingdom |
| STOMBERG, Rolf Wilhelm Heinrich, Dr RESIGNED | Director | 01 Jan 1998 | 12 Apr 2012 | | April 1940 | 15 Adam Street, London, WC2N 6LA |
| WHITE, Robert John RESIGNED | Director | 01 May 2020 | 30 Apr 2025 | United States | October 1962 | Building 5, Croxley Park, Hatters Lane, Watford, Hertfordshire, WD18 8YE, England |