| HUBAND, Harriet Rosin ACTIVE | Secretary | 31 Oct 2025 | | | | 6th Floor, The Block, Space House, 12 Keeley Street, London, WC2B 4BA, England |
| CLARK, Niall ACTIVE | Director | 19 Nov 2021 | | United Kingdom | December 1977 | 6th Floor, The Block, Space House, 12 Keeley Street, London, WC2B 4BA, England |
| HUBAND, Harriet Rosin ACTIVE | Director | 31 Oct 2025 | | United Kingdom | October 1985 | 6th Floor, The Block, Space House, 12 Keeley Street, London, WC2B 4BA, England |
| WAITE, Andrew ACTIVE | Director | 01 Aug 2024 | | United Kingdom | January 1980 | 6th Floor, The Block, Space House, 12 Keeley Street, London, WC2B 4BA, England |
| BOUGHTON, Paul Victor RESIGNED | Secretary | 24 Jan 1997 | 15 May 1997 | | | 205 Coombe Lane, Wimbledon, London, SW20 0RG |
| DUNN, Rebecca Louise RESIGNED | Secretary | 02 May 2017 | 05 Jun 2020 | | | Heritage House, Church Road, Egham, Surrey, TW20 9QD |
| MARTIN, Robert Scott RESIGNED | Secretary | 26 Jul 2006 | 02 May 2017 | | | Heritage House, Church Road, Egham, Surrey, TW20 9QD, England |
| MONTANARO, Richard Haldane Stokes RESIGNED | Secretary | | 11 Mar 1993 | | | 29 Northumberland Road, Leamington Spa, Warwickshire, CV32 6HE |
| PARSONS, Graham John RESIGNED | Secretary | 26 Nov 1993 | 24 Jan 1997 | | | Derwent Ridge, Bullhurst Lane Weston Underwood, Ashbourne, Derbyshire, DE6 4PA |
| SNOWDON, Clive John RESIGNED | Secretary | 11 Mar 1993 | 26 Nov 1993 | | | New End Barn, Spernall Lane Great Alne, Alcester, Warwickshire, B49 6JD |
| STEPHENS, Roger John RESIGNED | Secretary | 15 May 1997 | 26 Jul 2006 | | | Pensdell Old Farmhouse, Farleigh Road Cliddesden, Basingstoke, Hampshire, RG25 2HA |
| UNWIN, Eliza RESIGNED | Secretary | 29 Feb 2024 | 06 Nov 2025 | | | 6th Floor, The Block, Space House, 12 Keeley Street, London, WC2B 4BA, England |
| UNWIN, Eliza Mary RESIGNED | Secretary | 09 Jun 2020 | 19 Dec 2022 | | | Melbourne House, 5th Floor, 44-46 Aldwych, London, WC2B 4LL, England |
| ADAMS, Mark Andrew RESIGNED | Director | 11 Jul 1995 | 24 Jan 1997 | | August 1964 | 2 Nightingale Court Kelvedon Grove, Solihull, West Midlands, B91 2UA |
| BALCHIN, Victoria Jane RESIGNED | Director | 25 Mar 2019 | 20 Jan 2020 | England | April 1974 | Heritage House, Church Road, Egham, Surrey, TW20 9QD |
| BOUGHTON, Paul Victor RESIGNED | Director | 24 Jan 1997 | 04 Oct 2004 | United Kingdom | September 1955 | 11 Esher Place Avenue, Esher, Surrey, KT10 8PU |
| CLAY, Glynne Herbert Charles RESIGNED | Director | | 27 Jan 1997 | | April 1931 | Lower House Farm, Nantyderry, Abergavenny, Monmouthshire, NP7 9DP |
| DUMPLETON, Anthony William RESIGNED | Director | 17 Jul 2013 | 15 Nov 2021 | England | January 1969 | Heritage House, Church Road, Egham, Surrey, TW20 9QD, England |
| DUNN, Rebecca Louise RESIGNED | Director | 25 Mar 2019 | 05 Jun 2020 | England | June 1980 | Heritage House, Church Road, Egham, Surrey, TW20 9QD |
| HARRIS, Stephen Clive RESIGNED | Director | 02 Aug 2006 | 31 Jan 2008 | United Kingdom | May 1958 | Northolt, Thames Street, Sunbury On Thames, Middlesex, TW16 6AG |
| JOHNSON, Ian Andrew RESIGNED | Director | 21 Jan 2020 | 01 Aug 2024 | England | February 1972 | Melbourne House, 5th Floor, 44-46 Aldwych, London, WC2B 4LL, England |
| MCGOWAN, Brian Dennis RESIGNED | Director | | 24 Jan 1997 | England | October 1944 | Beamhurst Hall, Beamhurst, Uttoxeter, Staffordshire, ST14 5EA |
| MCLACHLAN, Kenneth John RESIGNED | Director | | 27 Jan 1997 | | January 1947 | 445 Herengracht, 1017 Br Amsterdam, The Netherlands |
| NILSSON, Hans Daniel RESIGNED | Director | 02 Dec 1997 | 25 May 2005 | England | September 1955 | 30 East Sheen Avenue, East Sheen, London, SW14 8AS |
| POULTER, John William RESIGNED | Director | 24 Jan 1997 | 08 May 2001 | | November 1942 | 8 Milford House, Queen Anne Street, London, W1G 9HN |
| SAHOTA, Sulakhan RESIGNED | Director | | 24 Jan 1997 | | March 1960 | Manor House Manor Lane, Wroxall, Warwick, Warwickshire, CV35 7NH |
| SNOWDON, Clive John RESIGNED | Director | | 24 Jan 1997 | United Kingdom | June 1953 | New End Barn, Spernall Lane Great Alne, Alcester, Warwickshire, B49 6JD |
| STAPLES, Ian Laurence RESIGNED | Director | | 26 Nov 1993 | | December 1946 | The Paddocks, Lowsonford, Solihull, West Midlands, B95 5HN |
| STEPHENS, Roger John RESIGNED | Director | 27 Oct 2004 | 04 Jan 2018 | England | December 1960 | Heritage House, Church Road, Egham, Surrey, TW20 9QD, England |
| UNWIN, Eliza Mary RESIGNED | Director | 29 Feb 2024 | 06 Nov 2025 | United Kingdom | December 1990 | 6th Floor, The Block, Space House, 12 Keeley Street, London, WC2B 4BA, England |
| UNWIN, Eliza Mary RESIGNED | Director | 09 Jun 2020 | 19 Dec 2022 | United Kingdom | December 1990 | Melbourne House, 5th Floor, 44-46 Aldwych, London, WC2B 4LL, England |
| WATSON, Clive Graeme RESIGNED | Director | 08 Oct 2013 | 25 Mar 2019 | England | February 1958 | Heritage House, Church Road, Egham, Surrey, TW20 9QD, England |
| WEBSTER, James Charles RESIGNED | Director | 24 Jan 1997 | 08 Oct 2013 | England | June 1950 | Heritage House, Church Road, Egham, Surrey, TW20 9QD, England |
| ZACHARIAS, James Graham RESIGNED | Director | 24 Jan 1997 | 13 Sep 2004 | England | March 1951 | Hillside, Mountview Road, Claygate, Surrey, KT10 0UD |