| WEEKE, Helle ACTIVE | Secretary | 01 Aug 2023 | | | | Smarts Place, 3rd Floor One Smart's Place, London, WC2B 5LW, United Kingdom |
| KNOTT, Tine Johannesen ACTIVE | Director | 06 May 2026 | | United States | July 1971 | Smarts Place, 3rd Floor One Smart's Place, London, WC2B 5LW, United Kingdom |
| NORTHRIP, Zan Alexus ACTIVE | Director | 02 May 2026 | | United States | April 1968 | Smarts Place, 3rd Floor One Smart's Place, London, WC2B 5LW, United Kingdom |
| BARKER, Gary RESIGNED | Secretary | 01 Jan 2015 | 01 Dec 2016 | | | 3rd Floor, Block C, Westside, London Road, Apsley, HP3 9TD, England |
| CERPA, Erin RESIGNED | Secretary | 01 Dec 2016 | 01 Aug 2023 | | | 3rd Floor, Block C, Westside, London Road, Apsley, HP3 9TD, England |
| TIMMINS, David Peter RESIGNED | Secretary | 24 Oct 2007 | 31 Dec 2013 | | | Thamesfield House, Boundary Way, Hemel Hempstead Industrial, Estate, Hemel Hempstead, HP2 7SR |
| WATTS, Christopher RESIGNED | Secretary | 31 Dec 2013 | 31 Dec 2014 | | | 2nd Floor, 63, Gee Street, London, EC1V 3RS, United Kingdom |
| BARKER, Gary John RESIGNED | Director | 01 Dec 2016 | 01 Feb 2018 | England | October 1972 | 3rd Floor, Block C, Westside, London Road, Apsley, HP3 9TD, England |
| BOOMGARD, James John RESIGNED | Director | 25 Jun 2014 | 05 Jul 2025 | United States | September 1954 | 3rd Floor, Block C, Westside, London Road, Apsley, HP3 9TD, England |
| GREEN, James Roy RESIGNED | Director | 24 Oct 2007 | 31 Dec 2013 | | November 1957 | 1 Park Ride Close, Harpenden, Hertfordshire, AL5 3AW |
| JAKOBOWSKI, Michael James RESIGNED | Director | 31 Dec 2013 | 30 Jun 2020 | United States | October 1960 | 2nd Floor, 63, Gee Street, London, EC1V 3RS, United Kingdom |
| LOB-LEVYT, Julian Peter, Dr RESIGNED | Director | 31 Dec 2013 | 25 Jun 2014 | England | October 1956 | 2nd Floor, 63, Gee Street, London, EC1V 3RS, United Kingdom |
| LOCKETT, Christopher RESIGNED | Director | 01 Feb 2018 | 01 Aug 2019 | England | September 1963 | 3rd Floor, Block C, Westside, London Road, Apsley, HP3 9TD, England |
| LOCKETT, Christopher David Alistair RESIGNED | Director | 24 Oct 2007 | 01 Dec 2016 | England | September 1963 | 19 The Orchids, Chilton, Didcot, Oxon, OX11 0QP |
| MARIS, John Pantelis RESIGNED | Director | 01 Sep 2023 | 02 May 2026 | England | May 1976 | Smarts Place, 3rd Floor One Smart's Place, London, WC2B 5LW, United Kingdom |
| SMITH, Keith Darren RESIGNED | Director | 21 Oct 2019 | 15 Oct 2023 | England | February 1974 | 3rd Floor, Block C, Westside, London Road, Apsley, HP3 9TD, England |
| TIMMINS, David Peter RESIGNED | Director | 24 Oct 2007 | 31 Dec 2013 | United Kingdom | October 1952 | 2nd Floor, 63 Gee Street, London, EC1V 3RS |
| WEST, Jeremy Christopher RESIGNED | Director | 24 Oct 2007 | 31 Dec 2013 | United Kingdom | April 1970 | 83 Whitelands Avenue, Chorleywood, Hertfordshire, WD3 5RQ |