| MASON, David Macconnal ACTIVE | Secretary | 14 Apr 1998 | | | | 22, Chancery Lane, London, WC2A 1LS, United Kingdom |
| MASON, Claire Elizabeth ACTIVE | Director | 12 Jan 2022 | | England | October 1963 | Scamore Cottage, Tangley, Nr. Andover, Hampshire, England, SP11 0SH, England |
| MASON, David Macconnal ACTIVE | Director | 30 Apr 1992 | | England | June 1965 | 22, Chancery Lane, London, WC2A 1LS, United Kingdom |
| MASON, David Leslie ACTIVE | Director | | | United Kingdom | March 1939 | 22, Chancery Lane, London, WC2A 1LS, United Kingdom |
| PALMER, Susan ACTIVE | Director | 09 Jan 2024 | | United Kingdom | February 1965 | 22, Chancery Lane, London, WC2A 1LS, United Kingdom |
| MASON, Marie Victoria RESIGNED | Secretary | | 05 Dec 2017 | | | 22, Chancery Lane, London, WC2A 1LS, United Kingdom |
| CARTER, Simon Charles RESIGNED | Director | 24 Mar 1998 | 31 Mar 2020 | England | July 1957 | 22, Chancery Lane, London, WC2A 1LS, United Kingdom |
| FURNELL, Maurice James RESIGNED | Director | | 30 Jun 2009 | | July 1944 | 1 Home Close, Pound Hill, Crawley, West Sussex, RH10 3AF |
| GRIST, Michael Angus RESIGNED | Director | 01 Mar 2013 | 04 Sep 2020 | United Kingdom | February 1976 | 22, Chancery Lane, London, WC2A 1LS, United Kingdom |
| HALLIWELL, Marcus Guy Clare RESIGNED | Director | 01 Oct 1999 | 29 Aug 2025 | England | November 1954 | 22, Chancery Lane, London, WC2A 1LS, United Kingdom |
| MASON, Marie Victoria RESIGNED | Director | | 05 Dec 2017 | England | February 1940 | 22, Chancery Lane, London, WC2A 1LS, United Kingdom |
| WHITE, Colin RESIGNED | Director | | 04 Jan 1999 | | July 1935 | 24 Higher Green, Ewell, Epsom, Surrey, KT17 3BA |