| REES, Claire Jacqueline ACTIVE | Secretary | 02 Oct 2023 | | | | 5th Floor, 30 Panton Street, London, SW1Y 4AJ, England |
| BAVERSTOCK, Gavin James ACTIVE | Director | 03 Jan 2023 | | England | November 1973 | 5th Floor, 30 Panton Street, London, SW1Y 4AJ, England |
| BERRIS, Christopher Paul ACTIVE | Director | 30 Jun 2010 | | England | December 1979 | 5th Floor, 30 Panton Street, London, SW1Y 4AJ, England |
| FERGUSON, Bruce Hill ACTIVE | Director | 15 Apr 2020 | | Scotland | October 1971 | 5th Floor, 30 Panton Street, London, SW1Y 4AJ, England |
| JOHNSON, Arthur James ACTIVE | Director | 01 Sep 2017 | | United States | May 1960 | 5th Floor, 30 Panton Street, London, SW1Y 4AJ, England |
| WILLEY, David Benjamin, Dr ACTIVE | Director | 31 May 2024 | | England | April 1973 | 5th Floor, 30 Panton Street, London, SW1Y 4AJ, England |
| FISHER, Ruth RESIGNED | Secretary | | 01 Aug 2002 | | | Badger Hill House, 107 Clophill Road, Maulden, Bedford, MK45 2AD |
| GILMORE, Cormac John Peter RESIGNED | Secretary | 01 Aug 2002 | 17 Jun 2010 | | | 12 Chilham Close, Greenford, Middlesex, UB6 8AR |
| WILLEY, Ben RESIGNED | Secretary | 17 Jun 2010 | 01 Oct 2023 | | | 5th Floor, 30 Panton Street, London, SW1Y 4AJ, England |
| BROOK, Graeme Howard Blythe RESIGNED | Director | 13 Aug 1991 | 03 Jun 1994 | United Kingdom | August 1955 | 5 Melbourne Close, Orpington, Kent, BR6 0BJ |
| CLARK, Dennis Leslie RESIGNED | Director | | 23 Apr 2008 | United Kingdom | December 1943 | 3 Cockspur Street, London, SW1Y 5BQ |
| FISHER, Ruth RESIGNED | Director | 03 Jun 1994 | 01 Aug 2002 | | June 1942 | Badger Hill House, 107 Clophill Road, Maulden, Bedford, MK45 2AD |
| GILMORE, Cormac John Peter RESIGNED | Director | 06 May 2009 | 03 Jan 2023 | England | July 1959 | 5th Floor, 30 Panton Street, London, SW1Y 4AJ, England |
| HUNTING, Richard Hugh RESIGNED | Director | | 01 Sep 2017 | England | July 1946 | 5, Hanover Square, London, W1S 1HQ, England |
| JARVIS, Mark Edwin RESIGNED | Director | 17 Apr 2018 | 03 Jan 2023 | England | February 1966 | 5th Floor, 30 Panton Street, London, SW1Y 4AJ, England |
| MILLER, Kenneth William RESIGNED | Director | | 31 Jul 2001 | United Kingdom | February 1939 | South Cottage The Street, Compton, Guildford, Surrey, GU3 1EB |
| PROCTOR, Dennis Lee RESIGNED | Director | 23 Apr 2008 | 01 Sep 2017 | United States, Texas | April 1952 | 5, Hanover Square, London, W1S 1HQ, England |
| ROSE, Peter RESIGNED | Director | 23 Apr 2008 | 15 Apr 2020 | United Kingdom | October 1958 | 5, Hanover Square, London, W1S 1HQ |
| ST QUINTIN, Christopher Ruthven RESIGNED | Director | 17 Apr 2002 | 30 Jun 2010 | United Kingdom | November 1942 | 4 Cornwall Road, Cheam, Surrey, SM2 6DR |