| NADARAJAH, Pamela Caroline ACTIVE | Secretary | 31 Mar 2026 | | | | Cromwell Place, Hampshire International Business Park, Lime Tree Way, Basingstoke, Hampshire, RG24 8YJ, United Kingdom |
| BORLENGHI, Lara Marianne Elizabeth ACTIVE | Director | 19 Mar 2015 | | England | January 1973 | Cromwell Place, Hampshire International Business Park, Lime Tree Way, Basingstoke, Hampshire, RG24 8YJ, United Kingdom |
| BRANFIELD, Lyndon Keith ACTIVE | Director | 18 Jun 2020 | | United Kingdom | November 1971 | Cromwell Place, Hampshire International Business Park, Lime Tree Way, Basingstoke, Hampshire, RG24 8YJ, United Kingdom |
| HOGG, Matthew Adam ACTIVE | Director | 06 Feb 2026 | | United Kingdom | July 1974 | Cromwell Place, Hampshire International Business Park, Lime Tree Way, Basingstoke, Hampshire, RG24 8YJ, United Kingdom |
| LONG, James Paul ACTIVE | Director | 16 Jul 2024 | | United Kingdom | March 1977 | The Smithson, 6 Briset Street, London, EC1M 5NR, United Kingdom |
| POULSON, Sally Jane ACTIVE | Director | 16 Jul 2024 | | United Kingdom | June 1964 | The Smithson, 6 Briset Street, London, EC1M 5NR, United Kingdom |
| PRIOR, Joanna Melancy Lyndon ACTIVE | Director | 13 Jun 2022 | | England | February 1966 | The Smithson Building, 6 Briset Street, London, EC1M 5NR, United Kingdom |
| LANGLEY, Gordon Paul RESIGNED | Secretary | 08 Feb 2013 | 13 Feb 2015 | | | Brunel Road, Houndmills, Basingstoke, Hampshire, RG21 6XS, United Kingdom |
| NIVEN, Frances Julie RESIGNED | Secretary | 30 Nov 2021 | 28 Mar 2024 | | | The Campus, 4 Crinan Street, London, N1 9XW, United Kingdom |
| POWTER, Martin Edward RESIGNED | Secretary | 15 Mar 1995 | 08 Feb 2013 | | | 13 Stocker Close, Basingstoke, Hampshire, RG21 3HY |
| TROTMAN, Paul Stanley RESIGNED | Secretary | | 15 Mar 1995 | | | Goose Green, Southington, Overton, Hampshire, RG25 3DA |
| WILLIAMS HAMER, Gabrielle Mary RESIGNED | Secretary | 28 Mar 2024 | 31 Mar 2026 | | | 4, Crinan Street, London, N1 9XW, England |
| WILLIAMS HAMER, Gabrielle Mary RESIGNED | Secretary | 13 Feb 2015 | 30 Nov 2021 | | | 4, Crinan Street, London, N1 9XW, United Kingdom |
| BROWNING, Guy RESIGNED | Director | 03 Feb 2016 | 06 Feb 2026 | United Kingdom | May 1965 | Cromwell Place, Hampshire International Business Park, Lime Tree Way, Basingstoke, Hampshire, RG24 8YJ, United Kingdom |
| BYAM SHAW, Nicholas Glencairn RESIGNED | Director | | 31 Dec 1997 | England | March 1934 | 9 Kensington Park Gardens, London, W11 3HB |
| CHARKIN, Richard Denis Paul RESIGNED | Director | 01 Jan 1998 | 04 Dec 2006 | United Kingdom | June 1949 | 3 Redcliffe Place, London, SW10 9DB |
| CRAMOND, Simon Peter Darlington RESIGNED | Director | 07 Mar 2014 | 11 Oct 2021 | United Kingdom | February 1956 | Cromwell Place, Hampshire International Business Park, Lime Tree Way, Basingstoke, Hampshire, RG24 8YJ, United Kingdom |
| CURRAN, Daniel RESIGNED | Director | 11 Sep 2015 | 14 Jan 2016 | United Kingdom | November 1967 | 60, Woodlands Road, Surbiton, Surrey, KT6 6PY, United Kingdom |
| FARRIES, William Hanson RESIGNED | Director | 04 Dec 2006 | 31 Mar 2014 | United Kingdom | April 1950 | 40 Blandford Avenue, Oxford, OX2 8DZ |
| FLEMING, Catherine Elinor RESIGNED | Director | 04 Dec 2006 | 29 Jun 2012 | United Kingdom | May 1961 | Marlston Farm House, Marlston Hermitage, Thatcham, Berkshire, RG18 9UU |
| FORBES WATSON, Anthony David RESIGNED | Director | 19 Mar 2015 | 30 Mar 2022 | England | September 1954 | The Macmillan Building, 4 Crinan Street, London, England, N1 9XW, England |
| JACOBS, Rachel Elizabeth RESIGNED | Director | 27 Jun 2013 | 01 Oct 2015 | United Kingdom | December 1975 | 4, Crinan Street, London, N1 9XW, United Kingdom |
| LAPAZ, Annie RESIGNED | Director | 01 Oct 2015 | 31 Mar 2020 | United Kingdom | March 1959 | 4, Crinan Street, London, N1 9XW, United Kingdom |
| MCCORMACK, Thomas Joseph RESIGNED | Director | | 15 Feb 1995 | | January 1932 | 50 Central Park West, New York, 10023, Usa |
| POWTER, Martin Edward RESIGNED | Director | 04 Dec 2006 | 29 Jun 2013 | England | September 1950 | 13 Stocker Close, Basingstoke, Hampshire, RG21 3HY |
| PRIDDY, Roger Ian RESIGNED | Director | 19 Mar 2015 | 30 Jun 2024 | United Kingdom | February 1960 | Chancery House, Chancery Lane, London, England, WC2A 1QT, England |
| SMITH, David Gordon RESIGNED | Director | 19 Mar 2015 | 10 Jul 2015 | England | July 1957 | 8, Merrileas Gardens, Basingstoke, Hampshire, RG22 5JZ, United Kingdom |
| SOAR, Adrian Richard RESIGNED | Director | 15 Feb 1995 | 06 Apr 1999 | | March 1941 | Flat 13 17 Broad Court, London, WC2B 5QN |
| TODD, Geoffrey Richard Utten RESIGNED | Director | 06 Apr 1999 | 04 Dec 2006 | | January 1948 | Field View Homestead Road, Medstead, Alton, Hampshire, GU34 5NA |
| WEBER, Andrew RESIGNED | Director | 19 Mar 2015 | 28 May 2021 | United States | February 1967 | 4, Crinan Street, London, N1 9XW, United Kingdom |