| RUDDLE, Camille Karina ACTIVE | Secretary | 19 Sep 2025 | | | | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| VICKERS, Alison Charlotte ACTIVE | Secretary | 13 Jun 2024 | | | | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| CHITTY, Martin ACTIVE | Director | 21 Feb 2023 | | England | June 1958 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| HOLT, Graeme David Mark ACTIVE | Director | 08 Jul 2024 | | England | September 1968 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| LEWIS, Jade ACTIVE | Director | 06 Sep 2022 | | England | June 1974 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| ROBERTSON, Charles Archibald ACTIVE | Director | 05 Oct 2020 | | England | December 1953 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| SMITH LOMAS, Martin Paul ACTIVE | Director | 21 Feb 2023 | | England | May 1961 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| STUMPFF, Timothy Emil ACTIVE | Director | 23 Apr 2024 | | England | November 1963 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| BYRNE, Ian William, Dr. RESIGNED | Secretary | | 09 Nov 2018 | | | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| HAYES, Sandra Marie RESIGNED | Secretary | 09 Nov 2018 | 08 Sep 2022 | | | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| RUDDLE, Camille Karina RESIGNED | Secretary | 08 Sep 2022 | 13 Jun 2024 | | | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| ARCHER, Mary Doreen, Dame RESIGNED | Director | | 14 Jan 2000 | England | December 1944 | The Old Vicarage, Grantchester, Cambridge, CB3 9ND |
| BLACK, Paul Joseph, Professor RESIGNED | Director | 15 May 1992 | 19 May 2000 | England | September 1930 | 16 Wilton Crescent, London, SW19 3QZ |
| BOYLE, Godfrey Andrew RESIGNED | Director | 15 Nov 2004 | 12 Sep 2013 | England | March 1945 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| CHAUDRY, Naveed Haider RESIGNED | Director | 05 Oct 2020 | 21 Nov 2023 | England | April 1986 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| CHESSHIRE, John Harvey RESIGNED | Director | 12 May 1995 | 14 May 2004 | | June 1947 | 90 Stanford Avenue, Brighton, East Sussex, BN1 6FE |
| COOKE, Peter Duncan RESIGNED | Director | | 31 Jan 1997 | | February 1953 | Walkmill 34 Brookfield Road, Doagh, Ballyclare, County Antrim, BT39 0SW |
| DAVIS, Christine Agnes Murison RESIGNED | Director | | 21 Nov 2003 | | March 1944 | 24 Newton Crescent, Dunblane, Perthshire, FK15 0DZ |
| DOGGART, John Victor RESIGNED | Director | 28 Feb 2008 | 11 Oct 2018 | England | May 1941 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| FAWKES, Steven Derrick, Dr RESIGNED | Director | 22 Apr 2014 | 20 Mar 2018 | England | January 1959 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| FERGUSSON, Stewart Collis RESIGNED | Director | 26 Jun 2013 | 30 Mar 2021 | England | May 1950 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| FORBES, Linda Craig RESIGNED | Director | 10 Mar 2021 | 17 Oct 2022 | England | October 1957 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| GOSSOP, Christopher John, Dr RESIGNED | Director | 25 Feb 2010 | 29 Jun 2017 | England | February 1946 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| HALL, Christopher John RESIGNED | Director | 14 Aug 2015 | 31 Mar 2019 | England | October 1947 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| HARDMAN, Eryl Wendy RESIGNED | Director | 20 Apr 2016 | 24 Mar 2017 | England | May 1973 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| HARVEY, Anthony David RESIGNED | Director | 15 Sep 2013 | 21 Sep 2015 | England | December 1951 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| HUTCHINSON, David Walter RESIGNED | Director | 28 Feb 2008 | 31 Mar 2015 | United Kingdom | March 1940 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| JACKSON, Caroline Frances, Dr RESIGNED | Director | 14 Dec 2004 | 02 Dec 2010 | United Kingdom | November 1946 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| JACKSON, Keith Howard RESIGNED | Director | 24 Sep 1993 | 08 Dec 2011 | United Kingdom | March 1938 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| JONES, David Le Brun RESIGNED | Director | | 14 May 1999 | | November 1923 | 47 Grove End Road, London, NW8 9NB |
| LAING, John Martin Kirby, Sir RESIGNED | Director | | 03 Sep 1999 | | January 1942 | Page Street, Mill Hill, London, NW7 2ER |
| LIMB, Ann Geraldine, Dame RESIGNED | Director | 02 Dec 2010 | 19 Mar 2012 | England | February 1953 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| LOMAS, Kevin, Professor RESIGNED | Director | 10 Dec 2004 | 20 Jun 2013 | United Kingdom | September 1956 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| MADDOCK, Diana Margaret, Baroness RESIGNED | Director | 14 May 1999 | 13 May 2005 | United Kingdom | May 1945 | 28 Castle Terrace, Berwick Upon Tweed, Northumberland, TD15 1NZ |
| MALE, Mary Elizabeth RESIGNED | Director | 22 Apr 2014 | 24 May 2024 | United Kingdom | July 1967 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| MARMONT, Anthony RESIGNED | Director | 14 May 1999 | 04 Dec 2009 | United Kingdom | May 1930 | West Beacon Farm Deans Lane, Woodhouse Eaves, Loughborough, Leicestershire, LE12 8TE |
| MCNALLY, Eryl RESIGNED | Director | 01 Apr 1997 | 22 Feb 2007 | | April 1942 | 30 Follet Drive, Abbots Langley, Hertfordshire, WD5 0LP |
| NICHOLSON, Robin Buchanan, Sir RESIGNED | Director | | 26 Jul 1996 | | August 1934 | Whittington House 8 Fisherwick Road, Whittington, Lichfield, Staffordshire, WS14 9LH |
| ORESZCZYN, Tadeusz, Prof RESIGNED | Director | 05 Mar 2009 | 14 Aug 2013 | United Kingdom | August 1957 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| PAKES, Andrew RESIGNED | Director | 17 Jun 2017 | 21 Mar 2018 | England | April 1973 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| POTTER, James Gerrard RESIGNED | Director | | 08 Sep 1994 | United Kingdom | March 1944 | 42 High Street, Balsham, Cambridge, Cambridgeshire, CB1 6EP |
| PUTTNAM, David Terence, Lord RESIGNED | Director | | 18 May 1998 | | February 1941 | Kingsmead Mill, Little Somerford, Chippenham, Wiltshire, SN15 5JN |
| RAYNSFORD, Nick RESIGNED | Director | | 26 Oct 1993 | | January 1945 | 31 Cranbury Road, London, SW6 2NS |
| REASON, Elizabeth Frances RESIGNED | Director | 18 May 2006 | 30 Mar 2021 | United Kingdom | February 1950 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |
| REED, Andrew John RESIGNED | Director | 26 Jan 2006 | 22 Sep 2011 | England | September 1964 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| RHODES, Matthew Brandon RESIGNED | Director | 22 Apr 2014 | 12 Oct 2018 | England | July 1966 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| RICKABY, Peter Alan, Dr RESIGNED | Director | 22 Apr 2014 | 19 Nov 2018 | England | August 1953 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| RIFFAT, Saffa, Prof RESIGNED | Director | 25 Nov 2004 | 26 Jan 2006 | | July 1954 | 3 Heathervale, West Bridgford, Nottingham, Nottinghamshire, NG2 7ST |
| ROOKE, Wilfred Allen RESIGNED | Director | | 15 Sep 1992 | | September 1921 | 14 Thamesfield Gardens, Marlow, Buckinghamshire, SL7 1PZ |
| SAUNDERS, Graham Paul Cavendish RESIGNED | Director | 10 Dec 2004 | 30 Jun 2015 | England | March 1947 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| STEELE, Gervas RESIGNED | Director | 04 May 2005 | 14 Jun 2007 | United Kingdom | February 1943 | West Winds, Burnham Market, Norfolk, PE31 8EY |
| THOMAS, Gillian Mary RESIGNED | Director | 28 Jul 1995 | 16 May 2003 | | March 1944 | 14 Lexham Mews, London, W8 6JW |
| TINSON, Richard RESIGNED | Director | 18 May 2006 | 12 Sep 2013 | United Kingdom | November 1933 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| WALKER, Noel John RESIGNED | Director | 29 Feb 2012 | 17 Jun 2017 | United Kingdom | December 1948 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| WALKER, Noel John RESIGNED | Director | 12 Feb 1999 | 25 Nov 2005 | United Kingdom | December 1948 | Fullers Barn The Green, Loughton, Milton Keynes, MK5 8AW |
| WARREN, Andrew James RESIGNED | Director | 23 Feb 2004 | 02 Dec 2015 | Cambridgeshire | September 1948 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| WHITE, Brian Arthur Robert RESIGNED | Director | 04 Nov 2004 | 12 Sep 2013 | England | May 1957 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| WICKS, Malcolm Hunt RESIGNED | Director | | 21 Oct 1994 | | July 1947 | 10 Penwortham Road, South Croydon, Surrey, CR2 0QS |
| WINTERBOTTOM, Fraser John RESIGNED | Director | 25 May 2011 | 30 Jun 2015 | England | June 1957 | The National Energy Centre, Davy Avenue Knowlhill, Milton Keynes, MK5 8NG |
| WORDSWORTH, Andrew Christopher RESIGNED | Director | 15 Sep 2011 | 28 Sep 2021 | United Kingdom | November 1970 | Suite 2.15, Challenge House, Sherwood Drive, Bletchley, Milton Keynes, MK3 6DP, England |