| CHAMBERS, John ACTIVE | Secretary | 15 Apr 2026 | | | | 3 Park Gate, Mount Avenue, Ealing, London, W5 1PX |
| BURKE, Christine ACTIVE | Director | 14 Sep 1999 | | United Kingdom | June 1952 | 23 Park Gate, Mount Avenue, London, W5 1PX |
| GRAHAM, Madeline Theresa ACTIVE | Director | 17 Oct 2022 | | United Kingdom | March 1982 | 17 Bourne Court, Southend Road, Woodford Green, Essex, IG8 8HD |
| MUKHERJEE, Abir Kumar, Dr ACTIVE | Director | 17 Oct 2022 | | United Kingdom | July 1980 | 7 Park Gate, Mount Avenue, Ealing, London, W5 1PX, United Kingdom |
| OWEN, Edwin Kingsley ACTIVE | Director | | | United Kingdom | January 1936 | 19 Park Gate, Mount Avenue, London, W5 1PX |
| THOMPSON, Patricia ACTIVE | Director | | | United Kingdom | April 1943 | 22 Park Gate, Ealing, London, W5 1PX |
| THORNTON, Peter Alexander ACTIVE | Director | 25 Nov 2013 | | England | July 1954 | 1, Park Gate, Mount Avenue, London, W5 1PX, England |
| WAREHAM, Andrew Franklin, Dr ACTIVE | Director | 17 Oct 2022 | | United Kingdom | February 1965 | 31, Bourne Court, Southend Road, Woodford Green, Essex, IG8 8HD, United Kingdom |
| WAREHAM, Elisabeth Morwenna Saunders ACTIVE | Director | 17 Oct 2022 | | United Kingdom | August 1965 | 17 Bourne Court, Southend Road, Woodford Green, Essex, IG8 8HD |
| OWEN, Edwin Kingsley RESIGNED | Secretary | 12 Nov 1997 | 15 Apr 2026 | | | 19 Park Gate, Mount Avenue, London, W5 1PX |
| POOLE, James Nicholas RESIGNED | Secretary | | 12 Nov 1997 | | | 12 Park Gate, Ealing, London, W5 1PX |
| ALLWRIGHT, John Clifford, Dr RESIGNED | Director | 23 Jul 1996 | 25 Nov 2013 | United Kingdom | October 1943 | 10 Park Gate, Mount Avenue, London, W5 1PX |
| BONDONNO, Dante Domenico RESIGNED | Director | | 11 May 1995 | | September 1931 | 10 Park Gate, Ealing, London, W5 1PX |
| COX, Richard George RESIGNED | Director | | 14 Oct 1999 | | August 1946 | 3 Park Gate, Ealing, London, W5 1PX |
| HEAD, John Francis RESIGNED | Director | | 13 Jul 1998 | | May 1934 | 28 Park Gate, Ealing, London, W5 1PX |
| NEYMAN, Christine Francis RESIGNED | Director | 19 Jan 2005 | 14 Apr 2023 | United Kingdom | November 1953 | 17 Park Gate, Mount Avenue, London, W5 1PX |
| NICOLSON, David Robert RESIGNED | Director | 28 Jan 2002 | 11 Oct 2019 | England | March 1957 | 3 Park Gate, Mount Avenue, London, W5 1PX |
| POOLE, James Nicholas RESIGNED | Director | | 12 Nov 1997 | | April 1953 | 12 Park Gate, Ealing, London, W5 1PX |
| VICKERS, David Rein RESIGNED | Director | | 14 Sep 1999 | | February 1920 | 21 Park Gate, Ealing, London, W5 1PX |