| HEAZELL, Frances Victoria ACTIVE | Secretary | 05 Oct 2016 | | | | 180, Great Portland Street, London, W1W 5QZ, United Kingdom |
| RIDDELL, James Hendry ACTIVE | Director | 19 Dec 2025 | | England | February 1979 | 180, Great Portland Street, London, W1W 5QZ, United Kingdom |
| SLAVIN, Philip Simon ACTIVE | Director | 14 Sep 2021 | | England | October 1974 | 180, Great Portland Street, London, W1W 5QZ, United Kingdom |
| DIXON, Susan Elizabeth RESIGNED | Secretary | 28 Jun 2010 | 01 Jan 2013 | | | 16, Grosvenor Street, London, W1K 4QF, United Kingdom |
| ODELL, Sandra Judith RESIGNED | Secretary | 01 Jan 2013 | 05 Oct 2016 | | | 43-45, Portman Square, London, W1H 6LY, United Kingdom |
| CARTER, Simon Geoffrey RESIGNED | Director | 26 May 2015 | 13 Jan 2017 | United Kingdom | September 1975 | 43-45, Portman Square, London, W1H 6LY, United Kingdom |
| DODD, Angus Alexander RESIGNED | Director | 27 Jun 2016 | 15 Aug 2017 | England | May 1967 | 43-45, Portman Square, London, W1H 6LY, United Kingdom |
| HARE, Alexander Edward Compton, Mr RESIGNED | Director | 15 Aug 2017 | 14 Sep 2021 | United Kingdom | June 1985 | 180, Great Portland Street, London, W1W 5QZ, United Kingdom |
| JAMES, Maxwell David Shaw RESIGNED | Director | 05 Jul 2011 | 27 Jun 2016 | England | January 1967 | 43-45, Portman Square, London, W1H 6LY, United Kingdom |
| SAUNDERS, James Michael Edward RESIGNED | Director | 23 Jun 2022 | 19 Dec 2025 | England | May 1966 | 180, Great Portland Street, London, W1W 5QZ, United Kingdom |
| SAUNDERS, James Michael Edward RESIGNED | Director | 31 Mar 2015 | 15 Aug 2017 | England | May 1966 | 43-45, Portman Square, London, W1H 6LY, United Kingdom |
| SHATTOCK, Nicholas Simon Keith RESIGNED | Director | 28 Jun 2010 | 24 Mar 2011 | England | October 1959 | 16, Grosvenor Street, London, W1K 4QF, United Kingdom |
| STEARN, Richard James RESIGNED | Director | 01 Aug 2012 | 31 Mar 2015 | United Kingdom | August 1968 | 43-45, Portman Square, London, W1H 6LY, United Kingdom |
| TATFORD, Simon Andrew RESIGNED | Director | 15 Aug 2017 | 23 Jun 2022 | England | July 1978 | 180, Great Portland Street, London, W1W 5QZ, United Kingdom |
| WORTHINGTON, Rebecca Jane RESIGNED | Director | 28 Jun 2010 | 31 Oct 2012 | England | October 1971 | 16, Grosvenor Street, London, W1K 4QF, United Kingdom |
| WYATT, Adrian Roger RESIGNED | Director | 28 Jun 2010 | 25 May 2012 | England | January 1948 | 16, Grosvenor Street, London, W1K 4QF, United Kingdom |