| BROCK, Leonie Claire Watson ACTIVE | Secretary | 03 Dec 2024 | | | | 23, Queen Anne Street, London, W1G 9DL, England |
| ACLOQUE, Alexander John Sebastian ACTIVE | Director | 23 Sep 2025 | | United Kingdom | January 1978 | 23, Queen Anne Street, London, W1G 9DL, England |
| ACLOQUE, Camilla Anne Bronwen, The Honourable ACTIVE | Director | | | United Kingdom | April 1947 | 23, Queen Anne Street, London, W1G 9DL, England |
| BEST, Julian Kenneth ACTIVE | Director | 01 Oct 2020 | | England | March 1970 | 23, Queen Anne Street, London, W1G 9DL, England |
| BUCHAN, Susan, The Honourable Mrs ACTIVE | Director | | | United Kingdom | October 1937 | 23, Queen Anne Street, London, W1G 9DL, England |
| GILBARD, Marc Edward Charles ACTIVE | Director | 01 Nov 2011 | | United Kingdom | May 1962 | Nightingale House, 65 Curzon Street, London, W1J 8PE, England |
| GRIFFITH, Andrew Mark ACTIVE | Director | 18 May 2021 | | England | May 1978 | 23, Queen Anne Street, London, W1G 9DL, England |
| HOWARD DE WALDEN, Peter John Joseph, Lord ACTIVE | Director | 23 Sep 2025 | | England | January 1966 | 23, Queen Anne Street, London, W1G 9DL, England |
| KAKKAR, Ajay Kumar, Professor Lord ACTIVE | Director | 06 Dec 2017 | | England | April 1964 | 23, Queen Anne Street, London, W1G 9DL, England |
| KILDEA, Mark ACTIVE | Director | 04 Jul 2011 | | United Kingdom | August 1965 | 23, Queen Anne Street, London, W1G 9DL, England |
| PEACE, Elizabeth Ann ACTIVE | Director | 03 Dec 2014 | | United Kingdom | December 1952 | 23, Queen Anne Street, London, W1G 9DL, England |
| PROBY, William Henry, Sir ACTIVE | Director | 06 Dec 2017 | | United Kingdom | June 1949 | 23, Queen Anne Street, London, W1G 9DL, England |
| RUCK, Sophia Jane Elizabeth ACTIVE | Director | 23 Sep 2025 | | England | March 1962 | 23, Queen Anne Street, London, W1G 9DL, England |
| SHANNON, Toby Richard ACTIVE | Director | 07 May 1997 | | England | January 1957 | 23, Queen Anne Street, London, W1G 9DL, England |
| STERNBERG, Karl Stephen ACTIVE | Director | 02 Dec 2020 | | England | June 1969 | 23, Queen Anne Street, London, W1G 9DL, England |
| WHITE, Jessica Jane Vronwy, The Honourable ACTIVE | Director | | | United Kingdom | August 1941 | 23, Queen Anne Street, London, W1G 9DL, England |
| WHITE, Nicholas John Sebastian ACTIVE | Director | 23 Sep 2025 | | England | March 1967 | 23, Queen Anne Street, London, W1G 9DL, England |
| GRIFFITH, Peter RESIGNED | Secretary | 03 Mar 2015 | 31 Oct 2019 | | | 27, Baker Street, London, W1U 8EQ, England |
| HALL, Barbara Dawn RESIGNED | Secretary | | 23 May 2000 | | | Left Hand Cottage Church Lane, Albury, Guildford, Surrey, GU5 9AL |
| INMAN, Karen Teresa RESIGNED | Secretary | 19 Nov 2019 | 03 Dec 2024 | | | 23, Queen Anne Street, London, W1G 9DL, England |
| LEE, John Philip Macarthur RESIGNED | Secretary | 23 May 2000 | 19 Dec 2013 | | | 23 Queen Anne Street, London, W1G 9DL |
| PRECIOUS, Martin RESIGNED | Secretary | 19 Dec 2013 | 03 Mar 2015 | | | 23 Queen Anne Street, London, W1G 9DL |
| ASHENDEN, Andrew RESIGNED | Director | 01 Jul 1993 | 11 Jul 2016 | England | May 1944 | 23 Queen Anne Street, London, W1G 9DL |
| BARTON, Malcolm Peter Speight RESIGNED | Director | 03 Mar 1998 | 06 Dec 2017 | United Kingdom | March 1937 | 23 Queen Anne Street, London, W1G 9DL |
| BAYNHAM, Simon William De Mouchet RESIGNED | Director | 01 Oct 2020 | 31 Oct 2020 | United Kingdom | October 1956 | 27, Baker Street, London, W1U 8EQ, England |
| BAYNHAM, Simon William De Mouchet RESIGNED | Director | 01 Jul 2002 | 30 Sep 2020 | United Kingdom | October 1956 | 27, Baker Street, London, W1U 8EQ, England |
| DE WALDEN, Howard, The Lady RESIGNED | Director | | 13 Jul 2024 | United Kingdom | August 1935 | 23, Queen Anne Street, London, W1G 9DL, England |
| ELDRIDGE, Colin Maurice Julian RESIGNED | Director | | 09 Jul 1993 | | June 1938 | Winding Wood Farmhouse, Kintbury, Berkshire, RG17 9RN |
| GIBBS, Roger Geoffrey, Sir RESIGNED | Director | | 13 Mar 2001 | | October 1934 | 23 Tregunter Road, London, SW10 9LS |
| HARDY, Peter Bernard RESIGNED | Director | 16 May 1995 | 03 Dec 2008 | England | December 1938 | Shorne Mead Pear Tree Lane, Shorne, Kent, DA12 3JT |
| HENDERSON, John Ronald RESIGNED | Director | | 31 Mar 1994 | | May 1920 | West Woodhay House, Newbury, Berkshire, RG15 0BS |
| HOWARD DE WALDEN AND SEAFORD, Johnosmael, The Rt Hon Lord RESIGNED | Director | | 31 Mar 1992 | | November 1912 | Avington Manor, Avington, Hungerford, Berkshire, RG17 0UL |
| HOWES, Christopher Kingston, Sir RESIGNED | Director | 01 Oct 2002 | 02 Dec 2020 | England | January 1942 | 27, Baker Street, London, W1U 8EQ, England |
| HYNARD, Andrew James RESIGNED | Director | 03 Oct 2016 | 10 Sep 2020 | England | January 1960 | 27, Baker Street, London, W1U 8EQ, England |
| MOBBS, Gerald Nigel, Sir RESIGNED | Director | | 04 Oct 2005 | | September 1937 | Widmer Lodge, Parslows Hillock, Princes Risborough, Buckinghamshire, HP27 0RJ |
| MUSGRAVE, Mark Jonathan RESIGNED | Director | 03 Apr 2020 | 01 Jun 2023 | England | October 1952 | 5, Fleet Place, London, EC4M 7RD, England |
| PEACOCK, Christopher Arden RESIGNED | Director | 03 Oct 2006 | 03 Feb 2019 | United Kingdom | April 1945 | 23 Queen Anne Street, London, W1G 9DL |
| STORMONTH DARLING, Peter RESIGNED | Director | 02 Apr 2001 | 03 Dec 2014 | England | September 1932 | 23 Queen Anne Street, London, W1G 9DL |