| PRITCHARD, Jane Mary ACTIVE | Secretary | 05 Jul 2023 | | | | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| FOX, Martin ACTIVE | Director | 23 Sep 2024 | | England | April 1969 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| HOLMES, Adele Sylvia ACTIVE | Director | 23 Sep 2024 | | England | September 1966 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| HUTCHINSON, Keri ACTIVE | Director | 23 Sep 2024 | | Wales | January 1971 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| KRISS, Stephen Martin ACTIVE | Director | 23 Sep 2024 | | England | May 1956 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| BASARAB-HORWATH, Helena RESIGNED | Secretary | 11 Jan 2023 | 05 Jul 2023 | | | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| BROWN, Joanna Mary RESIGNED | Secretary | 18 Jun 2011 | 31 May 2016 | | | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| DE LYON, Hilary Barbara RESIGNED | Secretary | 02 Apr 1999 | 06 Mar 2003 | | | 9 West Square, London, SE11 4SN |
| FORRESTER, Andrew RESIGNED | Secretary | 07 Mar 2003 | 18 Mar 2005 | | | 6 Havelock Road, Croydon, Surrey, CR0 6QP |
| GILLESPIE, Rosemary, Dr RESIGNED | Secretary | 01 Jun 2016 | 14 Jul 2017 | | | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| GOULDS, David James RESIGNED | Secretary | 18 Mar 2005 | 18 Jun 2011 | | | 31 Ardoch Road, Catford, London, SE6 1SN |
| JAMIESON, Stephen Edward RESIGNED | Secretary | 25 Sep 2017 | 31 Aug 2022 | | | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| PAULSON, Mark Dennis RESIGNED | Secretary | 16 Jan 1998 | 04 Sep 1998 | | | 15 Holdich Street, Peterborough, Cambridge, PE3 6DH |
| SARGEANT, Mark RESIGNED | Secretary | 31 Aug 2022 | 11 Jan 2023 | | | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| TROUNCER, Jonathan Geoffrey Courtenay RESIGNED | Secretary | 14 Jul 1993 | 16 Jan 1998 | | | 24 Knolls Close, Worcester Park, Surrey, KT4 8UR |
| VAUGHAN, Gerald Anthony Courtney RESIGNED | Secretary | 04 Sep 1998 | 01 Apr 1999 | | | 109 Richmond Park Road, Kingston Upon Thames, Surrey, KT2 6AF |
| WOOD, George RESIGNED | Secretary | 14 Jul 2017 | 25 Sep 2017 | | | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| BAIRD, Stuart Andrew RESIGNED | Director | 06 Dec 2010 | 23 Sep 2024 | Scotland | June 1957 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| BAKKER, Johannes Lodewijk RESIGNED | Director | 04 Jul 2015 | 30 Jun 2018 | England | August 1953 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| BORTHWICK, Alan Matthew RESIGNED | Director | 06 Dec 2010 | 29 Jun 2017 | England | August 1958 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| DELVES, Deborah RESIGNED | Director | 24 Jun 2011 | 12 Aug 2022 | England | December 1967 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| DUNN, George Alexander Paterson RESIGNED | Director | 29 Jun 2017 | 30 Jun 2018 | England | December 1965 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| DUNNING, David RESIGNED | Director | 24 Jun 2011 | 29 Jun 2017 | England | November 1953 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| FITZPATRICK, Matthew Thomas Joseph RESIGNED | Director | 25 Jun 2016 | 30 Jun 2018 | England | December 1979 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| FRENCH, Gwendoline Joan RESIGNED | Director | 14 Jul 1993 | 06 Dec 2010 | England | August 1929 | 40, The Sycamores, Baldock, Herts, SG7 5BG |
| HANDFORD, Richard James RESIGNED | Director | 26 Jun 2011 | 29 Jun 2013 | United Kingdom | September 1971 | 1 Fellmongers Path, Tower Bridge Road, London, SE1 3LY |
| HOWELL, Graham Roland RESIGNED | Director | 05 Jul 2013 | 25 Jun 2016 | England | May 1959 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| LOVEGROVE, Mary Joy, Professor RESIGNED | Director | 01 Mar 2013 | 04 Jul 2015 | England | December 1949 | 1 Fellmongers Path, Tower Bridge Road, London, SE1 3LY |
| MARSH, Jeremy Ken RESIGNED | Director | 01 Mar 2013 | 29 Jun 2017 | United Kingdom | June 1954 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| MCINNES, Janet Alison RESIGNED | Director | 06 Dec 2010 | 28 Jun 2014 | England | August 1951 | 1 Fellmongers Path, Tower Bridge Road, London, SE1 3LY |
| MORRISS-ROBERTS, Christopher, Dr RESIGNED | Director | 29 Jun 2017 | 30 Jun 2018 | England | September 1979 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| O'NEILL, Michael Paul RESIGNED | Director | 24 Jun 2011 | 29 Jun 2017 | England | June 1959 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| PAPANICOLA, Louisa Theodora RESIGNED | Director | 24 Jun 2011 | 30 Jun 2012 | England | September 1947 | 1 Fellmongers Path, Tower Bridge Road, London, SE1 3LY |
| PEAT, Robert RESIGNED | Director | 29 Jun 2017 | 30 Jun 2018 | Scotland | March 1956 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| POTTER, Michael James RESIGNED | Director | 24 Jun 2011 | 29 Jun 2017 | England | November 1951 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| REED, Karen RESIGNED | Director | 25 Jun 2016 | 30 Jun 2018 | England | August 1962 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| SABINE, Pamela Margaret RESIGNED | Director | 14 Jul 1993 | 06 Dec 2010 | England | July 1955 | Tanglewood, 39 Birch Lane, Stock, Essex, CM4 9NA |
| SAVAGE, Paul Forrest RESIGNED | Director | 28 Jun 2014 | 30 Jun 2018 | United Kingdom | June 1960 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| SCOTT, Michelle Maria RESIGNED | Director | 23 Sep 2024 | 26 Sep 2025 | England | April 1970 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| SIMMONITE, Neil Stuart RESIGNED | Director | 28 Jun 2014 | 29 Jun 2017 | England | June 1964 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| SMITH, Adam Edwin RESIGNED | Director | 25 Mar 2022 | 23 Sep 2024 | Scotland | March 1986 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| SUPPLE, Emma Lucy RESIGNED | Director | 29 Jun 2017 | 30 Jun 2018 | England | June 1967 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| VIG, Stella RESIGNED | Director | 25 Jun 2016 | 30 Jun 2018 | England | March 1967 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| WILLIAMS, Neil Rodney RESIGNED | Director | 01 Mar 2013 | 30 Jun 2018 | United Kingdom | August 1944 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |
| WISHART, Alison Catherine Gray RESIGNED | Director | 24 Jun 2011 | 23 Sep 2024 | England | January 1957 | Quartz House, 207 Providence Square, Mill Street, London, SE1 2EW, England |