| COWAN, James Anthony ACTIVE | Secretary | 01 Oct 2020 | | | | 33, New Cavendish Street, London, W1G 9TS, England |
| ARAKI, Manae ACTIVE | Director | 04 Nov 2024 | | England | February 2000 | Flat 1, 33 Wimpole Street, London, W1G 8GU, England |
| MANNIX, Li-Anne Rose ACTIVE | Director | 28 May 2025 | | Canada | August 1953 | Suite 2400, 530 8 Avenue Sw, Calgary, Canada |
| BURDETT, Howard Francis RESIGNED | Secretary | 01 Nov 2004 | 20 May 2009 | | | Flat 2, 33 Wimpole Street, London, W1G 8GU |
| BURDETT, Louisa Sachiko RESIGNED | Secretary | 20 May 2009 | 06 Sep 2013 | | | Suite Flat 2, 33 Wimpole Street, London, W1G 8GU |
| HALL, Nicholas John RESIGNED | Secretary | | 15 Jun 1994 | | | 255 Muswell Hill Broadway, London, N10 1DG |
| LEVER, Paul Ronald Scott RESIGNED | Secretary | 20 Mar 1999 | 01 Nov 2004 | | | 35, Great Peter Street, London, SW1P 3LR |
| MARR, David Nicholas RESIGNED | Secretary | 19 Jan 1998 | 20 Mar 1999 | | | Flat 5 33 Wimpole Street, London, W1M 7AE |
| NESTEL, Jeremy RESIGNED | Secretary | 09 Nov 1995 | 19 Jan 1998 | | | 6 Culross Street, London, W1Y 3HN |
| BURDETT, Howard Francis RESIGNED | Director | 01 Nov 2004 | 20 May 2009 | | March 1970 | Flat 2, 33 Wimpole Street, London, W1G 8GU |
| BURDETT, Louisa Sachiko RESIGNED | Director | 20 May 2009 | 06 Sep 2013 | United Kingdom | November 1968 | Suite Flat 2, 33 Wimpole Street, London, W1G 8GU |
| GORHAM, Joan RESIGNED | Director | | 20 Mar 1999 | | March 1947 | Flat A 33 Wimpole Street, London, W1M 7AE |
| IVERSEN, Benjamin Rupert Lars RESIGNED | Director | 30 Jun 2020 | 31 Jan 2025 | England | May 1969 | 33, New Cavendish Street, London, W1G 9TS, England |
| LEVER, Paul Ronald Scott RESIGNED | Director | 20 Mar 1999 | 01 Nov 2004 | United Kingdom | December 1940 | 35, Great Peter Street, London, SW1P 3LR |
| MARR, David Nicholas RESIGNED | Director | 19 Jan 1998 | 20 Mar 1999 | | February 1943 | Flat 5 33 Wimpole Street, London, W1M 7AE |
| MARR, David Nicholas RESIGNED | Director | | 02 Feb 1994 | | February 1943 | Salford Manor, Salford, Milton Keynes, Buckinghamshire, MK17 8BB |
| MISAN, Olivia RESIGNED | Director | 03 Nov 2014 | 23 Jun 2026 | France | September 1970 | Flat 5, 33 Wimpole Street, London, W1G 8GU, United Kingdom |
| MITCHEL, Jon Matthew RESIGNED | Director | 20 Mar 1999 | 01 Nov 2004 | United Kingdom | January 1967 | 18 Gower Mews, London, WC1E 6HP |
| SHARPE, Peter RESIGNED | Director | 08 Oct 2005 | 01 Jan 2013 | United Kingdom | February 1930 | Flat 5, 33 Wimpole Street, London, W1G 8GU |
| THOMAS, Stephen Leslie RESIGNED | Director | 03 Aug 2009 | 10 Apr 2022 | England | September 1953 | Flat 6, 33 Wimpole Street, London, W1G 8GU, United Kingdom |
| VERGETTE, Emma RESIGNED | Director | 01 Nov 2004 | 21 May 2009 | | November 1965 | Flat 6, 33 Wimpole Street, London, W1G 8GU |
| ZURAKOWSKI, Jane Frances RESIGNED | Director | 06 Sep 2013 | 15 Nov 2013 | England | June 1970 | Flat 3, 33 Wimpole Street, London, W1G 8GU, England |