| CALLOW, Catherine ACTIVE | Secretary | 17 Sep 2025 | | | | 20, Old School Close, Caversfield, Bicester, OX27 8TW, England |
| BRUNDLE, Robin Charles ACTIVE | Director | 24 Apr 2025 | | England | September 1962 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| COWLEY, Steven Charles, Dr ACTIVE | Director | 24 Apr 2024 | | United States | October 1959 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| GLADDEN, Lynn Faith, Professor Dame ACTIVE | Director | 03 Jul 2023 | | England | July 1961 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| JACKSON, Neville Stuart, Professor ACTIVE | Director | 10 Jul 2026 | | England | October 1959 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| NEWMAN, Mark Christopher ACTIVE | Director | 15 Mar 2021 | | Hong Kong | April 1974 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| O'REILLY, Rachel Kerry ACTIVE | Director | 24 Apr 2025 | | England | June 1977 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| SHELDON, Isobel ACTIVE | Director | 15 Mar 2021 | | United Kingdom | November 1969 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| SRINIVASAN, Venkat, Dr ACTIVE | Director | 03 Jul 2023 | | United States | March 1973 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| STASSIN, Fabrice, Dr ACTIVE | Director | 10 Jul 2026 | | Belgium | September 1976 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| TAYLOR, Esther, Dr ACTIVE | Director | 11 Feb 2022 | | England | June 1972 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| PHILIP, Pramod RESIGNED | Secretary | 14 Dec 2017 | 09 May 2018 | | | Little Down Cottage, Old Down Hill, Tockington, Bristol, BS32 4PA, England |
| ROBERTSON, Susan Mary RESIGNED | Secretary | 09 May 2018 | 17 Sep 2025 | | | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| BERGER, Stefan, Dr RESIGNED | Director | 22 Jan 2018 | 25 Mar 2020 | England | July 1975 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| CHAMBERLAIN, Jeffrey, Dr RESIGNED | Director | 22 Jan 2018 | 14 Mar 2022 | United States | December 1965 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| DOCTER, Andreas, Dr RESIGNED | Director | 16 Mar 2020 | 19 Mar 2021 | England | November 1965 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| EDSTROM, Ester Kristina, Professor RESIGNED | Director | 20 Mar 2018 | 22 Nov 2023 | Sweden | June 1958 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| GENTILI, Valentina, Dr RESIGNED | Director | 24 Apr 2025 | 30 Jun 2025 | United Kingdom | January 1981 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| GREEN, Johney, Dr RESIGNED | Director | 22 Jan 2018 | 14 Mar 2022 | United States | October 1970 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| HEIDARI-ROBINSON, Stephen RESIGNED | Director | 10 Oct 2017 | 13 Mar 2023 | United Kingdom | July 1974 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| KIRNER, Hanno RESIGNED | Director | 11 Feb 2022 | 19 Aug 2026 | England | November 1970 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| LITTLEWOOD, Peter Brent RESIGNED | Director | 12 Sep 2017 | 31 Dec 2024 | United States | May 1955 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| MAXTON, Julie, Dr RESIGNED | Director | 22 Jan 2018 | 15 Mar 2021 | England | August 1955 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| NELSON, Alan Edwin, Dr RESIGNED | Director | 22 Jan 2018 | 23 Jul 2019 | England | December 1974 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| O'HARA, Cordelia RESIGNED | Director | 15 Mar 2021 | 30 Jun 2024 | United States | March 1974 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| PIKUNIC, Jorge Pablo RESIGNED | Director | 22 Jan 2018 | 10 Nov 2025 | United Kingdom | January 1976 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| SPEARING, Simon Mark, Professor RESIGNED | Director | 22 Jan 2018 | 08 Jul 2025 | England | December 1964 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| THOMAS, Pamela Anne, Professor RESIGNED | Director | 12 Sep 2017 | 11 Sep 2020 | United Kingdom | May 1962 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |
| VAN TOL, Maurits, Dr RESIGNED | Director | 06 Jul 2020 | 06 Nov 2023 | England | April 1967 | Suite 4, 2nd Floor, Quad One, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, England |