| HUSSEIN, Zaheed ACTIVE | Secretary | 08 Nov 2024 | | | | Iet Legal Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| ALLEN, Toni Claire ACTIVE | Director | 21 Mar 2024 | | England | October 1977 | Iet Legal Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| CLEEVELY, David Douglas ACTIVE | Director | 01 Oct 2026 | | United Kingdom | September 1953 | Iet Legal Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| HOBBS, Graeme Nigel ACTIVE | Director | 01 Oct 2026 | | United Kingdom | May 1956 | Iet Legal Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| WATTS, Alan James ACTIVE | Director | 28 Feb 2022 | | Northern Ireland | August 1956 | Iet Legal Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| WYLIE, Benjamin Guy ACTIVE | Director | 30 Jun 2025 | | United Kingdom | July 1985 | Iet Legal Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| HARRIS, Michael Leslie RESIGNED | Secretary | 12 Nov 1992 | 29 Apr 1997 | | | 210 Putteridge Road, Luton, Bedfordshire, LU2 8HJ |
| RIDING, Stephen RESIGNED | Secretary | | 12 Nov 1992 | | | 4 Wymondley Close, Hitchin, Hertfordshire, SG4 9PW |
| WILSON, Andrew Fraser RESIGNED | Secretary | 18 Mar 2004 | 08 Nov 2024 | | | 9 Howard Road, Coulsdon, Surrey, CR5 2EB |
| AKINOLA, Yewande Modupe RESIGNED | Director | 01 Oct 2023 | 30 Sep 2026 | England | July 1984 | Iet Legal Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| ALMOND, Edward Lawrence RESIGNED | Director | 03 Nov 2006 | 17 Aug 2022 | United Kingdom | May 1964 | Kwetu, Maiden Street Weston, Hitchin, Hertfordshire, SG4 7AA |
| ANDERSON, Antony Faithful RESIGNED | Director | 12 Nov 1992 | 11 May 1995 | | July 1939 | 26 Westfield Drive, Gosforth, Newcastle Upon Tyne, Tyne & Wear, NE3 4XY |
| ARTHUR, Colin Michael, Dr RESIGNED | Director | 01 Oct 2018 | 30 Sep 2021 | United Kingdom | August 1980 | Savoy Place, London, WC2R 0BL |
| BAILEY, Arthur Earle RESIGNED | Director | 30 May 1995 | 25 Nov 1997 | | April 1920 | Foxgloves New Valley Road, Milford On Sea, Lymington, Hampshire, SO41 0SA |
| BANKS, John RESIGNED | Director | 30 May 1995 | 18 Mar 2004 | | December 1920 | B1 Marine Gate, Marine Drive, Brighton, BN2 5TQ |
| BARKER, Horace Anthony, Professor RESIGNED | Director | | 11 May 1995 | | March 1931 | 107 Dunvant Road, Killay, Swansea, West Glamorgan, SA2 7NN |
| BHANGU, Bikramjit Singh, Dr RESIGNED | Director | 01 Oct 2020 | 30 Sep 2023 | Singapore | February 1976 | C/O A F Wilson, I E T Governance Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| BOOTH, Eric Stuart, Doctor RESIGNED | Director | | 25 Nov 1997 | | October 1914 | Pinecroft, Upper Dunsforth, York, North Yorkshire, YO26 9RU |
| BUNYAN, David Keith RESIGNED | Director | 05 Sep 2022 | 09 Oct 2023 | England | November 1958 | C/O A F Wilson, I E T Governance Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| BURGIN, Stephen Rex RESIGNED | Director | 05 Dec 2011 | 30 Sep 2014 | United Kingdom | September 1957 | Savoy Place, London, WC2R 0BL |
| BURTON, Nigel John, Dr RESIGNED | Director | 10 Dec 2007 | 30 Sep 2010 | England | February 1958 | 13 Barnsbury Terrace, London, N1 1JH |
| BURTON, Nigel John, Dr RESIGNED | Director | 15 Nov 2004 | 14 Mar 2006 | | February 1958 | Minerva House, 6 Barnsbury Square, London, N1 1JL |
| CANNAN, Michael Barry RESIGNED | Director | 30 May 1995 | 25 Nov 1997 | | December 1932 | 30 Kingston Hill Place, Kingston Hill, Kingston Upon Thames, Surrey, KT2 7QY |
| CHERRY, Richard Jonathan RESIGNED | Director | 14 Feb 2002 | 18 Jun 2007 | United Kingdom | November 1952 | Nithsdale, 47 Junction Road, Burgess Hill, West Sussex, RH15 0JB |
| CLIFTON, Barry John RESIGNED | Director | 12 Nov 1992 | 11 May 1995 | | May 1933 | 154 Toms Lane, Kings Langley, Hertfordshire, WD4 8NZ |
| COOPER, Colin Bay Liss RESIGNED | Director | | 11 May 1995 | | May 1928 | 248 Ashley Road, Hale, Althincham, Cheshire, WA15 9NG |
| CRYAN, Robert Anthony, Professor RESIGNED | Director | 05 Oct 2015 | 30 Sep 2018 | England | January 1964 | Savoy Place, London, WC2R 0BL |
| DAVIDSON, Colin William, Professor RESIGNED | Director | 04 Feb 2000 | 01 Oct 2001 | | September 1934 | 6/14 Succoth Court, Edinburgh, Midlothian, EH12 6BY |
| DAVIES, David Evan Naunton, Professor RESIGNED | Director | | 12 Nov 1992 | | October 1935 | 25a The Ridgeway, Rothley, Leicester, Leicestershire, LE7 7LE |
| DENNAY, Charles William RESIGNED | Director | 10 Dec 2007 | 30 Sep 2014 | United Kingdom | May 1935 | 1, Orchard Dean, Alresford, Hampshire, SO24 9DE |
| FINE, Nigel RESIGNED | Director | 06 Nov 2009 | 04 Nov 2021 | England | June 1957 | Savoy Place, London, WC2R 0BL |
| FORREST, John Richard, Dr RESIGNED | Director | 12 Nov 1992 | 01 Oct 1996 | | April 1943 | Hilfield Farm House, Hilfield Lane Aldenham, Watford, Hertfordshire, WD2 8DD |
| GASKELL, Colin Simister RESIGNED | Director | 01 Oct 1996 | 14 Mar 2006 | United Kingdom | May 1937 | Sequoia Lodge, Oakhurst Avenue, Harpenden, Hertfordshire, AL5 2ND |
| GRANT, Giles Justus RESIGNED | Director | 03 Sep 2018 | 16 Feb 2024 | England | May 1963 | C/O A F Wilson, I E T Governance Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| HAMER, Timothy Frank RESIGNED | Director | 20 May 2010 | 31 Jul 2017 | United Kingdom | July 1962 | 12, Byron Road, Harpenden, Herts, AL5 4AB, United Kingdom |
| HARRIS, Michael Leslie RESIGNED | Director | 18 Mar 2004 | 19 Sep 2006 | | September 1944 | 210 Putteridge Road, Luton, Bedfordshire, LU2 8HJ |
| HARRISON, Simon Charles Andrew, Dr RESIGNED | Director | 01 Oct 2018 | 30 Sep 2020 | England | July 1963 | Savoy Place, London, WC2R 0BL |
| HART, Simon David, Dr RESIGNED | Director | 01 Oct 2023 | 30 Sep 2026 | United Kingdom | March 1975 | Iet Legal Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| HAWLEY, Robert, Dr RESIGNED | Director | 30 May 1995 | 30 Sep 1995 | England | July 1936 | Summerfield, Rendcomb, Cirencester, Gloucestershire, GL7 7HB |
| HAWTHORNE, Stephen Richard RESIGNED | Director | 04 Sep 2017 | 06 Apr 2018 | United Kingdom | June 1971 | Savoy Place, London, WC2R 0BL |
| HAYWARD, Harold Thomas RESIGNED | Director | 01 Oct 1994 | 11 May 1995 | | June 1931 | 41 Linthurst Road, Barnt Green, Birmingham, West Midlands, B45 8JL |
| HLAING, Thomas, Eur Ing RESIGNED | Director | 10 Oct 2016 | 30 Sep 2018 | England | November 1981 | Savoy Place, London, WC2R 0BL |
| HOLLIER, Robert Henry, Professor RESIGNED | Director | | 01 Oct 1994 | | September 1934 | 23 Patch Lane, Bramhall, Stockport, Cheshire, SK7 1HX |
| HURST, Rachel RESIGNED | Director | 01 Oct 2021 | 30 Sep 2023 | England | June 1971 | C/O A F Wilson, I E T Governance Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| JACKSON, Paul Alan RESIGNED | Director | 16 May 2006 | 12 Dec 2007 | United Kingdom | April 1961 | 24 Northampton Square, London, EC1V 0HL |
| JAMES, James Roderick, Professor RESIGNED | Director | | 29 Jul 1993 | | June 1933 | Clardon House, Purton, Swindon, Wiltshire, SN5 9HR |
| JOHNSTONE, George Gordon RESIGNED | Director | | 12 Nov 1992 | | May 1926 | Little Rozel The Street, Wonersh, Guildford, Surrey, GU5 0PF |
| JONES, William Stanley, Dr RESIGNED | Director | 01 Oct 2001 | 22 Nov 2004 | United Kingdom | November 1941 | Lanes Holding, Pipers Lane, Great Kingshill, High Wycombe, Buckinghamshire, HP15 6LW |
| LOMER, Geoffrey John RESIGNED | Director | 25 Nov 1997 | 14 Mar 2006 | | January 1932 | Ladiko, Little Croft Road Goring On Thames, Reading, Berks, RG8 9ER |
| LUNT, Morcom RESIGNED | Director | 30 May 1995 | 14 Mar 2006 | | October 1939 | 7a Adams Road, Cambridge, CB3 9AD |
| MAIR, Steven RESIGNED | Director | 12 Dec 2000 | 06 Jul 2009 | | March 1954 | 9 The Close, Harpenden, Hertfordshire, AL5 3NB |
| MANLEY, Brian William, Dr RESIGNED | Director | 30 May 1995 | 25 Nov 1997 | United Kingdom | June 1929 | Hopkins Crank, Ditchling Common, Hassocks, West Sussex, BN6 8TP |
| MCCRIRRICK, Thomas Bryce, Dr RESIGNED | Director | | 29 Jul 1993 | | July 1927 | Surrey Place Coach, Coach House Gardens Elvetham Road, Fleet, Hampshire, GU13 8QX |
| MCGILL, Robin William RESIGNED | Director | 21 Feb 2007 | 02 Jun 2009 | Scotland | August 1955 | 22 Newlands, Kirknewton, EH27 8LR |
| MONTROSE, Rodney Gordon RESIGNED | Director | 29 Apr 1997 | 25 Aug 2000 | | October 1943 | 18 Ashby Drive, Upper Caldecote, Biggleswade, Bedfordshire, SG18 9DJ |
| MONTROSE, Rodney Gordon RESIGNED | Director | | 11 May 1995 | | October 1943 | 18 Ashby Drive, Upper Caldecote, Biggleswade, Bedfordshire, SG18 9DJ |
| MORGAN, David Vernon, Professor RESIGNED | Director | | 11 May 1995 | | July 1941 | 6 Berrymead Road, Cyncoed, Cardiff, South Glamorgan, CF23 6QA |
| OLIVER, Arthur David RESIGNED | Director | | 11 May 1995 | | November 1942 | 66 Blake Road, London, N11 2AH |
| PAYNE, Peter Alfred, Professor RESIGNED | Director | 11 Nov 1993 | 11 May 1995 | | September 1936 | 16 The Stables, Tabley House, Knutsford, Cheshire, WA16 0HA |
| PLUMPTON, Alan RESIGNED | Director | 30 May 1995 | 14 Mar 2006 | | November 1926 | Lockhill Stubbs Wood, Chesham Bois, Amersham, Buckinghamshire, HP6 6EX |
| PORTEOUS, James RESIGNED | Director | 01 Oct 1993 | 25 Nov 1997 | | December 1926 | Westfield 10 Fulwith Avenue, Harrogate, North Yorkshire, HG2 8HR |
| PORTEOUS, James RESIGNED | Director | | 12 Nov 1992 | | December 1926 | Westfield 10 Fulwith Avenue, Harrogate, North Yorkshire, HG2 8HR |
| PORTER, Colin Howard RESIGNED | Director | 10 Dec 2007 | 30 Sep 2011 | England | March 1950 | 16 Milebush, Leighton Buzzard, Bedfordshire, LU7 2UB |
| RAWLINS, Gordon John, Brigadier RESIGNED | Director | 29 Apr 1997 | 14 Feb 2002 | | April 1944 | Old School Court, Egerton, Ashford, Kent, TN27 9DW |
| ROBERTS, Alfred, Dr RESIGNED | Director | 14 Jun 1999 | 09 Mar 2007 | | June 1945 | 34 Biddenham Turn, Biddenham, Bedford, Bedfordshire, MK40 4AZ |
| SEAR, Benjamin Jack RESIGNED | Director | 10 Dec 2007 | 20 May 2010 | England | November 1961 | St Annes, Crayton Road, Ampthill, Bedford, Bedfordshire, MK45 2LE |
| TYSOE, John Sidney RESIGNED | Director | 30 May 1995 | 25 Nov 1997 | | March 1932 | School Cottage, Sicklinghall, Wetherby, West Yorkshire, LS22 4BD |
| WALTON, Field Laurence Joseph RESIGNED | Director | 25 Nov 1997 | 14 Mar 2006 | England | April 1940 | Christow Cottage, Seer Green Lane, Jordans, Buckinghamshire, HP9 2ST |
| WARD, Nigel RESIGNED | Director | 01 Oct 2014 | 30 Sep 2016 | England | March 1964 | 6, Escombe Drive, Guildford, Surrey, GU2 9RE, England |
| WATTS, Alan James RESIGNED | Director | 07 Oct 2013 | 30 Sep 2015 | Northern Ireland | August 1956 | Savoy Place, London, WC2R 0BL |
| WHITE, Simon Paul RESIGNED | Director | 10 Oct 2023 | 30 Jun 2025 | United Kingdom | January 1970 | Iet Legal Department, Savoy Place, London, WC2R 0BL, United Kingdom |
| WILLIAMS, John Charles, Dr RESIGNED | Director | 29 Apr 1997 | 14 Jun 1999 | | July 1938 | Beightons Bassetts Lane, Little Baddow, Chelmsford, Essex, CM3 4DA |
| WILLIAMS, John Charles, Dr RESIGNED | Director | | 11 May 1995 | | July 1938 | Beightons Bassetts Lane, Little Baddow, Chelmsford, Essex, CM3 4DA |
| WILLIAMSON, Stephen, Prof RESIGNED | Director | 01 Oct 2010 | 30 Sep 2012 | England | December 1948 | Savoy Place, London, WC2R 0BL |