| GRIFFIN, Neil ACTIVE | Secretary | 30 Jun 2021 | | | | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| EVANS, Paul Robert ACTIVE | Director | 29 Nov 2024 | | England | May 1975 | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| ARMSTRONG, Peter Francis, Secretary RESIGNED | Secretary | 28 Oct 2011 | 10 Jul 2013 | | | 6th Floor, 24 Chiswell Street, London, EC1Y 4TY |
| CHUKWU, Kenneth Oni, Secretary RESIGNED | Secretary | 28 Oct 2011 | 10 Jul 2013 | | | 6th Floor, 24 Chiswell Street, London, EC1Y 4TY |
| CRANDALL, George RESIGNED | Secretary | 26 Feb 2003 | 28 Oct 2011 | | | 32 Mayflower Dr, Trumbull, Connecticut 06611, Usa |
| STEVENSON, Robert Nicol RESIGNED | Secretary | 02 Jul 1993 | 22 Nov 1999 | | | 252 Bennetts Farm Road, Ridgefield, CT 06877, Usa |
| STRONG, Kenneth Malcolm RESIGNED | Secretary | 22 Nov 1999 | 18 Aug 2004 | | | 54 Perry Road, Tiptree, Colchester, Essex, CO5 0UB |
| VEVERS, Rawdon Quentin RESIGNED | Secretary | 18 Dec 1991 | 02 Jul 1993 | | | The Green Man, Arkesden, Essex, CB11 4EX |
| WOODS, Ashley Graham RESIGNED | Secretary | 10 Jul 2013 | 30 Jun 2021 | | | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| AMPSTEAD, Timothy James RESIGNED | Director | 26 Jun 2015 | 17 Jun 2016 | England | November 1971 | 30, St Mary Axe, London, EC3A 8EP |
| ARMSTRONG, Peter Francis RESIGNED | Director | 09 Aug 1999 | 10 Jul 2013 | Usa | January 1965 | 6th Floor, 24 Chiswell Street, London, EC1Y 4TY |
| BISWAS, Sunil RESIGNED | Director | 06 Jun 2025 | 12 May 2026 | United States | August 1969 | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| CHUKWU, Kenneth Oni RESIGNED | Director | 01 Jan 2009 | 10 Jul 2013 | United States | November 1957 | 30, St. Mary Axe, London, EC3A 8EP, England |
| CRANDALL, George RESIGNED | Director | 26 Feb 2003 | 28 Oct 2011 | | January 1947 | 32 Mayflower Dr, Trumbull, Connecticut 06611, Usa |
| D'AMICO, Paul M RESIGNED | Director | 18 Aug 2004 | 28 Oct 2011 | | January 1966 | 96 Stonehedge Drive North, Greenwich, Connecticut 06830, Usa |
| GREHAN, Keith William RESIGNED | Director | 10 Jul 2013 | 03 Jun 2014 | United Kingdom | August 1977 | 30, St Mary Axe, London, EC3A 8EP, United Kingdom |
| HOARE, Aram John RESIGNED | Director | 10 Jul 2013 | 26 Jun 2015 | Ireland | November 1973 | 30, St Mary Axe, London, EC3A 8EP, United Kingdom |
| KELLY, Joanne RESIGNED | Director | 03 Jun 2014 | 15 Nov 2016 | Ireland | February 1977 | 30, St Mary Axe, London, EC3A 8EP |
| LEE, Eric J. RESIGNED | Director | 28 Oct 2011 | 10 Jul 2013 | United States | December 1971 | 30, St. Mary Axe, London, EC3A 8EP, England |
| RUTTER, Mandy RESIGNED | Director | 09 Mar 2022 | 29 Nov 2024 | England | September 1965 | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| STEVENSON, Robert Nicol RESIGNED | Director | 18 Dec 1991 | 09 Aug 1999 | | March 1950 | 252 Bennetts Farm Road, Ridgefield, CT 06877, Usa |
| STRONG, Kenneth Malcolm RESIGNED | Director | 09 Aug 1999 | 18 Aug 2004 | England | June 1950 | 54 Perry Road, Tiptree, Colchester, Essex, CO5 0UB |
| STRONG, Kenneth Malcolm RESIGNED | Director | 18 Dec 1991 | 01 Jan 1999 | England | June 1950 | 54 Perry Road, Tiptree, Colchester, Essex, CO5 0UB |
| TIRSCHWELL, Mark RESIGNED | Director | 09 Mar 2022 | 30 Jun 2025 | United States | September 1961 | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| TRIPLETT, Edward Alexander RESIGNED | Director | 10 Jul 2013 | 09 Mar 2022 | United States | February 1981 | C/O Ion, 10 Queen Street Place, London, EC4R 1BE, England |
| VEVERS, Elaine RESIGNED | Director | 02 Jul 1993 | 01 Jan 1999 | England | June 1959 | Finn's Cottage, Arkesden, Saffron Walden, Essex, CB11 4EX |
| VEVERS, Rawdon Quentin RESIGNED | Director | 18 Dec 1991 | 02 Jul 1993 | England | March 1958 | The Green Man, Arkesden, Essex, CB11 4EX |