| DAVIS, Scott ACTIVE | Secretary | 13 Mar 2019 | | | | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| DAVIS, Scott ACTIVE | Director | 27 Jan 2025 | | England | November 1970 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| FERRARO, Robert ACTIVE | Director | 11 Jul 2022 | | Switzerland | June 1970 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| LOEWENSTEIN, Danielle Lisa ACTIVE | Director | 27 Jan 2025 | | England | February 1984 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| PAMBA, Allan, Dr ACTIVE | Director | 21 Apr 2026 | | Kenya | August 1971 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| ROWBOTHAM, Kathryn ACTIVE | Director | 11 Aug 2025 | | England | August 1976 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| ABIMBOLA, Olufunke RESIGNED | Secretary | 22 Jun 2015 | 06 Jul 2018 | | | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| BAILEY, Derek John RESIGNED | Secretary | | 30 Apr 1993 | | | 95 The Chine, London, N21 2EG |
| DANIEL, Richard David RESIGNED | Secretary | 16 Jul 1994 | 22 Jun 2015 | | | 6, Falcon Way, Shire Park, Welwyn Garden City, Hertfordshire, AL7 1TW |
| ROBERTSON, Mandy Elizabeth RESIGNED | Secretary | 09 Jul 2018 | 12 Mar 2019 | | | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| ACKERMANN, Vic RESIGNED | Director | 24 Oct 1997 | 14 Jun 2000 | | July 1944 | 16 Oakfield Road, West Common, Harpenden, Hertfordshire, AL5 2NL |
| BELL, Gavin Keith RESIGNED | Director | 10 Mar 1995 | 09 Mar 1999 | | October 1944 | 29 Broadwater Road, Welwyn Garden City, Hertfordshire, AL7 3AY |
| BRABECK LETMATHE, Andreas RESIGNED | Director | 09 Jan 2004 | 31 Aug 2012 | United Kingdom | November 1965 | 6 Falcon Way, Shire Park, Welwyn Garden City, Hertfordshire, AL7 1TW |
| CLOUGH, David Peter RESIGNED | Director | | 09 Mar 1999 | | March 1946 | Belvedere Cottage, Pleck Lane Kingston Blount, Chinnor, Oxfordshire, OX39 4RU |
| CUMA, Benan RESIGNED | Director | 01 Nov 2020 | 31 Jul 2024 | England | December 1974 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| DALLAS, Jayson Donald Alexander RESIGNED | Director | 01 Jan 2013 | 24 Jul 2015 | England | February 1968 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| DAVIES, James Lyndon, Dr RESIGNED | Director | | 09 Mar 1999 | England | January 1945 | The Farm House Main Street Worthington, Ashby-De-La-Zouch, Leicestershire, LE65 1RQ |
| ERWIN, Richard William RESIGNED | Director | 01 Sep 2015 | 03 Jul 2025 | England | May 1967 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| GOLDSMITH, John Anthony, Professor RESIGNED | Director | | 20 Sep 1991 | | September 1937 | Bramfield House West, Bramfield, Hertford, Hertfordshire, SG14 2QT |
| GRANT, Alexander RESIGNED | Director | 09 Mar 1999 | 30 Mar 2004 | | February 1955 | 1 Bell Laneue, Lewes, Sussex, BN7 1LG |
| GRIFFITHS, David RESIGNED | Director | | 16 Jul 1994 | | November 1947 | 14 The Brow, Chalfont St Giles, Buckinghamshire, HP8 4JD |
| HOLLADAY, Nicol Adrian RESIGNED | Director | 14 Oct 1994 | 24 Oct 1997 | United Kingdom | January 1948 | The Firs Titchfield Lane, Wickham, Fareham, Hampshire, PO17 5NT |
| HORNIBROOK, John Nevill RESIGNED | Director | | 30 Apr 1993 | | October 1928 | Cruachan, Kilmacolm, Renfrewshire, PA13 4PN |
| HUMER, Franz Bernhard RESIGNED | Director | 16 Jun 1995 | 09 Mar 1999 | | July 1946 | Sonneggstrasse 5, Riehen, CH4125, Switzerland |
| JACKSON, David James RESIGNED | Director | 16 Jul 1994 | 30 Sep 2001 | | March 1947 | 40 Broadwater Road, Welwyn Garden City, Hertfordshire, AL7 2DS |
| KELLY, Timothy Edwin RESIGNED | Director | 01 Mar 2017 | 31 Dec 2018 | England | November 1972 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| KESSLER, Armin Maximilian, Dr RESIGNED | Director | | 16 Jun 1995 | | March 1938 | C/O F Hoffmann-La-Roche Limited, Ch 4002 Basle, FOREIGN, Switzerland |
| KRAEHENMANN, Beat Christoph RESIGNED | Director | 05 Mar 2014 | 11 Jul 2022 | Switzerland | July 1957 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| LENNERTZ, James Karin Jnr RESIGNED | Director | 14 Jan 2002 | 09 Jan 2004 | | October 1953 | 29 Broadwater Road, Welwyn Garden City, Hertfordshire, AL7 3AY |
| LEUBERGER, Andres Friedrich, Doctor RESIGNED | Director | | 09 Mar 1999 | | February 1938 | Muhlestiegrain 48 Ch-4125, Riehen, FOREIGN, Switzerland |
| MCCLYMONT, Thomas Mcdonald, Doctor RESIGNED | Director | 27 Apr 1993 | 21 Feb 1997 | | December 1944 | 1 Buchanan Firs, Largs, Ayrshire, KA30 8QD |
| MELVILLE, John Mcmillan RESIGNED | Director | 14 Jun 2000 | 31 Dec 2012 | United Kingdom | May 1951 | 6 Falcon Way, Shire Park, Welwyn Garden City, Hertfordshire, AL7 1TW |
| NEWTON-SYMS, Paul Anthony RESIGNED | Director | | 02 Oct 1992 | England | December 1944 | Oakwood 10 Valentine Way, Chalfont St Giles, Buckinghamshire, HP8 4JB |
| PARKER, Christopher Stuart RESIGNED | Director | 07 Aug 2012 | 01 Jul 2017 | England | April 1958 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| RACKLEY, John Phillip RESIGNED | Director | 10 Mar 1995 | 09 Mar 1999 | | August 1958 | Barton Fields Cottage, 1 Barton Fields High St Ecton, Northampton, NN6 0QA |
| SCHILKE, Tobin Charles RESIGNED | Director | 04 Aug 2014 | 10 Jun 2016 | England | August 1974 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| SCHUMACHER, Christiane RESIGNED | Director | 10 Jun 2016 | 01 Mar 2017 | England | January 1976 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| SOAMES, Arthur Nicholas Winston, Hon RESIGNED | Director | | 15 Apr 1992 | | February 1948 | Flat 6 North Court, London, SW1P 3LL |
| STONE, Kenneth John, Dr RESIGNED | Director | 02 Oct 1992 | 14 Oct 1994 | | March 1943 | 11 West Hill Road, Foxton, Cambridge, Cambridgeshire, CB2 6SZ |
| SUMMERFIELD, Peter John Frederick, Doctor RESIGNED | Director | | 31 Dec 1991 | | August 1950 | Magdalene Barn, Longstanton, Cambridge, CB4 5BZ |
| TAYLOR, Kenneth Martin, Dr RESIGNED | Director | | 16 Dec 1994 | | August 1943 | 3 West Common Way, Harpenden, Hertfordshire, AL5 2LH |
| TWIST, Geoffrey John RESIGNED | Director | 01 Oct 2017 | 05 Feb 2026 | England | February 1971 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| VAN DEN BOER, Jan RESIGNED | Director | 22 Jul 2004 | 07 Aug 2012 | United Kingdom | April 1946 | 6, Falcon Way, Shire Park, Welwyn Garden City, Hertfordshire, AL7 1TW, England |
| VITUG, Kezia Jayn RESIGNED | Director | 01 Mar 2019 | 31 Oct 2020 | England | September 1976 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| WILLIAMS, Mark Lloyd RESIGNED | Director | 31 Aug 2012 | 30 May 2014 | England | September 1971 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |
| WILLIAMSON, Basil, Doctor RESIGNED | Director | 21 Feb 1997 | 09 Mar 1999 | | September 1944 | Carmel House, Fenwick Road, Kilmaurs, Ayrshire, KA3 2TE |
| WRIGHT, Richard John RESIGNED | Director | 24 Jul 2015 | 01 Sep 2015 | England | October 1973 | 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW |