| JORDAN, Nicola Diane ACTIVE | Secretary | 01 Jun 2018 | | | | Sixth Floor, The Lantern, 75 Hampstead Road, London, NW1 2PL, England |
| FEULNER, Marko Egon ACTIVE | Director | 01 Jan 2025 | | Germany | August 1974 | Sixth Floor, The Lantern, 75 Hampstead Road, London, NW1 2PL, England |
| MORRIS, Robert John ACTIVE | Director | 01 Aug 2023 | | England | July 1961 | Sixth Floor, The Lantern, 75 Hampstead Road, London, NW1 2PL, England |
| SCHNEIDER, Nathalie Aglaja ACTIVE | Director | 01 Jan 2026 | | England | July 1987 | Sixth Floor, The Lantern, 75 Hampstead Road, London, NW1 2PL, England |
| CARLESS, Helen Claire RESIGNED | Secretary | 03 May 2013 | 01 Aug 2016 | | | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| DAVINA, Simone Eufemia Agatha RESIGNED | Secretary | 02 Aug 2016 | 01 Jun 2018 | | | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD |
| FERRIS, Anthony Gordon RESIGNED | Secretary | | 31 Oct 1993 | | | Ewelme, Ewen, Cirencester, Gloucestershire, GL7 6BU |
| INVENSYS SECRETARIES LIMITED RESIGNED | Secretary | 31 Oct 1993 | 02 May 2013 | | | 3rd Floor, 40 Grosvenor Place, London, SW1X 7AW |
| BANERJEE, Sambit RESIGNED | Director | 01 Aug 2023 | 31 Dec 2025 | United Kingdom | July 1966 | Sixth Floor, The Lantern, 75 Hampstead Road, London, NW1 2PL, England |
| BARKER, Martin John RESIGNED | Director | 04 Jun 1999 | 05 Mar 2003 | United Kingdom | April 1943 | 100 The Croft, Trowbridge, Wiltshire, BA14 0RW |
| BARRY, Stephen John RESIGNED | Director | 06 Jan 2012 | 06 May 2014 | United Kingdom | April 1964 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| BAYS, James Claude RESIGNED | Director | 02 Jul 1999 | 30 Mar 2001 | | July 1949 | 28 Elmstone Road, Fulham, London, SW6 5TN |
| BROWN, Robert Casson RESIGNED | Director | 03 Dec 1993 | 31 Dec 1997 | | March 1939 | 38 Newlands Avenue, Melton Park, Newcastle Upon Tyne, NE3 5PX |
| BRYAN, Andrew RESIGNED | Director | 04 Oct 2006 | 20 May 2013 | United Kingdom | November 1963 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| CAMPION, Geoffrey Charles John RESIGNED | Director | 20 Oct 2003 | 31 Mar 2011 | England | February 1959 | 3rd Floor, 40, Grosvenor Place, London, SW1X 7AW, England |
| CLAYTON, John Reginald William RESIGNED | Director | 09 Feb 2001 | 31 Dec 2005 | England | December 1950 | Matley House, Grange Lane, Little Dunmow, Great Dunmow, Essex, CM6 3HY |
| COCHRANE, Adam Craven RESIGNED | Director | 01 May 2001 | 31 Jan 2003 | | July 1957 | 41 Highfield Drive, Uxbridge, Middlesex, UB10 8AW |
| COPELAND, Paul Jeffrey RESIGNED | Director | 09 Apr 2014 | 13 Feb 2018 | England | April 1956 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| CROSSFIELD, Nicholas RESIGNED | Director | 07 Jun 2010 | 29 Nov 2013 | United Kingdom | March 1965 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| CROWTHER, Brian Edward RESIGNED | Director | 13 Oct 1992 | 12 Jul 2003 | | November 1948 | Moat Springs Barn Gorsty Hill, Marchington Woodlands, Uttoxeter, Staffordshire, ST14 8PQ |
| DRUMMOND, James Edward Macgregor RESIGNED | Director | 24 Jul 2006 | 30 Jun 2011 | United Kingdom | March 1962 | 3rd Floor, 40, Grosvenor Place, London, SW1X 7AW, England |
| ENNIS, Carl Christopher RESIGNED | Director | 03 Feb 2020 | 30 Apr 2026 | United Kingdom | November 1968 | Sixth Floor, The Lantern, 75 Hampstead Road, London, NW1 2PL, England |
| FERRIS, Anthony Gordon RESIGNED | Director | | 04 Jun 1999 | United Kingdom | June 1943 | Ewelme, Ewen, Cirencester, Gloucestershire, GL7 6BU |
| GORE, Michael Ian RESIGNED | Director | 08 Jan 2008 | 31 Mar 2010 | United Kingdom | January 1965 | 17 Elizabeth Gardens, Sunbury On Thames, Middlesex, TW16 5LG |
| GRANT, Howard Robert RESIGNED | Director | | 30 Sep 1992 | | November 1940 | Elmsleigh Market Place, Colerne, Chippenham, Wiltshire, SN14 8DF |
| HALL, Andrew Douglas RESIGNED | Director | 03 May 2013 | 31 Mar 2014 | England | July 1963 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| HARDING, Christopher Michael Wesley RESIGNED | Director | 02 Apr 2003 | 29 Sep 2006 | | March 1948 | The Haven, London Road Pewsham, Chippenham, Wiltshire, SN15 3RW |
| HOWKER, Anthony RESIGNED | Director | | 30 Jun 1992 | | March 1940 | Fairways, Sandhills Lane, Virginia Water, Surrey, GU25 4BW |
| HULL, Victoria Mary RESIGNED | Director | 01 Jan 2006 | 30 Jan 2013 | United Kingdom | March 1962 | 3rd Floor, 40, Grosvenor Place, London, SW1X 7AW, England |
| JORDAN, Nicola Diane RESIGNED | Director | 30 May 2019 | 25 Oct 2019 | United Kingdom | May 1969 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| MAIER, Juergen Wolfgang, Professor RESIGNED | Director | 28 Sep 2018 | 30 Nov 2019 | England | January 1964 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD |
| MCPHEE, Alistair Dickson RESIGNED | Director | 31 Mar 2009 | 18 Jan 2010 | Scotland | July 1958 | 63 Balmoral Drive, Bishopton, Renfrewshire, PA7 5HR |
| O'DONOVAN, Kathleen Anne RESIGNED | Director | | 31 Dec 2002 | United Kingdom | May 1957 | 3c Cintra Park, Upper Norwood, London, SE19 2LH |
| OWEN, Sandra Julie RESIGNED | Director | 15 Dec 2017 | 31 Dec 2024 | England | January 1960 | Sixth Floor, The Lantern, 75 Hampstead Road, London, NW1 2PL, England |
| SMITH, Kevin Charles RESIGNED | Director | 31 Jan 2009 | 30 Jan 2013 | United Kingdom | August 1959 | 3rd Floor, 40, Grosvenor Place, London, SW1X 7AW, England |
| SMITH, Nigel Watkin Roberts RESIGNED | Director | 20 Oct 2003 | 29 Jun 2006 | England | June 1954 | Charleswood House Bull Lane, Gerrards Cross, Buckinghamshire, SL9 8RL |
| STEVENS, David John RESIGNED | Director | 31 Dec 1997 | 14 May 1999 | | March 1950 | 42 Burghley Road, Wimbledon, London, SW19 5HN |
| THOM, James Demmink RESIGNED | Director | 31 Jul 1996 | 09 Feb 2001 | | July 1946 | Tollgate Cottage, Turners Hill Road, Crawley Down, West Sussex, RH10 4HG |
| THOMAS, David Jeremy RESIGNED | Director | 01 Apr 2003 | 28 Feb 2009 | United Kingdom | May 1954 | 11 Coutts Crescent, 13-23 St Albans Road, London, NW5 1RF |
| WAKEFORD, Gordon Lawrence RESIGNED | Director | 15 Dec 2017 | 30 May 2019 | England | June 1962 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD |
| WHITFIELD, Eleanor Katherine RESIGNED | Director | 04 Oct 2006 | 31 Mar 2011 | England | October 1964 | 3rd Floor, 40, Grosvenor Place, London, SW1X 7AW, England |
| WIDDOWSON, Edward John RESIGNED | Director | | 13 Oct 1992 | United States | March 1948 | 6 Southview Path, Chaddsford, Pennsylvania 19317, Usa |
| WILLIAMS, Stanley Killa RESIGNED | Director | | 03 Dec 1993 | England | July 1945 | White Raven, Park Lane, Ashtead, Surrey, KT21 1EU |
| WILSON, William Henry Richard RESIGNED | Director | 19 Jun 2019 | 25 Jan 2023 | England | October 1967 | Sixth Floor, The Lantern, 75 Hampstead Road, London, NW1 2PL, England |
| YILMAZ, Olcay RESIGNED | Director | 03 May 2013 | 31 May 2018 | United Kingdom | February 1973 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |