| WOOSTER, Hugh William ACTIVE | Secretary | 12 Jul 2021 | | | | Broers Building, 21 Jj Thompson Avenue, Cambridge, CB3 0FA, United Kingdom |
| CURRAN, Alexandra Louise ACTIVE | Director | 09 Jan 2023 | | United States | October 1981 | 93, Fleet Road, Fleet, GU51 3PJ, England |
| DALEY, Keith Anthony ACTIVE | Director | 02 Feb 2004 | | United Kingdom | May 1955 | C/O Elektron Technology Plc, Broers Building, 21 J J Thomson Avenue, Cambridge, CB3 0FA, United Kingdom |
| KYTE, Christopher James ACTIVE | Director | 12 Jul 2021 | | United Kingdom | May 1982 | Broers Building, 21 Jj Thompson Avenue, Cambridge, CB3 0FA, United Kingdom |
| SHAW, Kristian Stuart ACTIVE | Director | 14 Oct 2024 | | England | March 1978 | 93, Fleet Road, Fleet, GU51 3PJ, England |
| BATTY, John Christopher Ralph RESIGNED | Secretary | 01 Aug 1997 | 23 Oct 1999 | | | No 1 The Spinney, Baker's Hill Hadley Common, Barnet, Hertfordshire, EN5 5QJ |
| BURNETT, Nicholas John RESIGNED | Secretary | 29 Jan 2004 | 11 Mar 2004 | | | 7 St Peters Field, Burnham On Crouch, Essex, CM0 8NX |
| COATE, Sara RESIGNED | Secretary | 04 May 2020 | 22 Jan 2021 | | | Broers Building, 21 J J Thomson Avenue, Cambridge, CB3 0FA |
| HO, Michelle RESIGNED | Secretary | 22 Jan 2021 | 12 Jul 2021 | | | 93, Fleet Road, Fleet, Hampshire, GU51 3PJ, United Kingdom |
| LEIGH, Christopher Michael RESIGNED | Secretary | 27 Oct 1999 | 06 Aug 2010 | | | Arranmoor 11 Hillwood Close, Hutton Mount, Brentwood, Essex, CM13 2PE |
| REEVES, Martin Leslie RESIGNED | Secretary | 06 Aug 2010 | 01 Oct 2016 | | | Glendale, Gryfe Road, Bridge Of Weir, Renfrewshire, PA11 3AL, Scotland |
| STONE, Geoffrey Alan RESIGNED | Secretary | | 31 Jul 1997 | | | 22 Woodland Way, Woodford Green, Essex, IG8 0QG |
| WEATHERSTONE, Andrew Paul RESIGNED | Secretary | 01 Oct 2016 | 04 May 2020 | | | C/O Elektron Technology Plc, Broers Building, 21 J J Thomson Avenue, Cambridge, CB3 0FA, United Kingdom |
| ACLAND, Simon Hugh Verdon RESIGNED | Director | 15 Nov 2010 | 09 Oct 2013 | United Kingdom | March 1958 | 42, Charlwood Road, Putney, London, SW15 1PW, United Kingdom |
| ARGENT, Malcolm, Mr. RESIGNED | Director | 09 Feb 2010 | 05 Aug 2010 | England | August 1935 | Melville Court, Spilsby Road, Romford, Essex, RM3 8SB |
| BULGIN, Clifford Stanley RESIGNED | Director | | 29 Apr 1997 | | February 1961 | The Grange Fen Lane, Metheringham, Lincoln, Lincolnshire, LN4 3AQ |
| BULGIN, Richard Arthur Ronald RESIGNED | Director | | 18 Nov 2002 | England | April 1959 | Piccotts Farm, Piccotts Lane, Great Saling, Essex, CM7 5DW |
| BULGIN, Robert Edward RESIGNED | Director | | 31 Aug 1997 | | June 1937 | Jessamine Cottage Rose Hill, Port Isaac, North Cornwall, PL29 3RL |
| BULGIN, Ronald Arthur RESIGNED | Director | 17 Jan 2003 | 11 Dec 2003 | | August 1935 | Tye Beam, Matching Tye, Old Harlow, Essex, CM17 0QR |
| BULGIN, Ronald Arthur RESIGNED | Director | | 31 Jan 1998 | | August 1935 | Tye Beam, Matching Tye, Old Harlow, Essex, CM17 0QR |
| CIUCCIO, Giovanni Maria RESIGNED | Director | 10 Sep 2015 | 31 Jan 2020 | United Kingdom | March 1981 | C/O Elektron Technology Plc, Broers Building, 21 J J Thomson Avenue, Cambridge, CB3 0FA, United Kingdom |
| EMERSON, Brian RESIGNED | Director | 05 Oct 1998 | 31 May 2003 | United Kingdom | October 1946 | 6 Fairway Close, Harpenden, Hertfordshire, AL5 2NN |
| FRANKLIN, Noah Felix Kalman RESIGNED | Director | 28 Jul 2011 | 10 Jan 2014 | England | April 1959 | Broers Building, 21 J J Thomson Avenue, Cambridge, CB3 0FA, England |
| GIRLING, Adrian Charles Nigel RESIGNED | Director | 17 Jan 2003 | 07 Jul 2008 | United Kingdom | March 1952 | Greentiles Ewehurst Lane, Speldhurst, Tunbridge Wells, Kent, TN3 0JX |
| GREENMAN, Simon Daniel RESIGNED | Director | 07 Jun 2021 | 04 Dec 2024 | United Kingdom | June 1968 | 93, Fleet Road, Fleet, Hampshire, GU51 3PJ, United Kingdom |
| HARRINGTON, Charles David RESIGNED | Director | | 31 Jan 1995 | | September 1938 | 4 Maple Avenue, Maidstone, Kent, ME16 0DD |
| HARRIS, Anthony Gordon RESIGNED | Director | 09 Oct 2013 | 10 Sep 2015 | England | October 1952 | Broers Building 21, J J Thomson Avenue, Cambridge, CB3 0FA, England |
| IRELAND, Barry Norman RESIGNED | Director | | 31 Jan 1995 | | May 1946 | 18 Felton Road, Barking, Essex, IG11 7XZ |
| LEIGH, Christopher Michael RESIGNED | Director | 28 Feb 1992 | 15 Sep 2010 | England | February 1960 | Arranmoor 11 Hillwood Close, Hutton Mount, Brentwood, Essex, CM13 2PE |
| MUIR, Aylsa Kim RESIGNED | Director | 23 Sep 2020 | 03 Sep 2021 | United Kingdom | November 1975 | 93, Fleet Road, Fleet, Hampshire, GU51 3PJ, United Kingdom |
| NEAMAN, Rachel Cecilia RESIGNED | Director | 01 Feb 2020 | 02 Jun 2021 | England | August 1965 | Broers Building, 21 J J Thomson Avenue, Cambridge, CB3 0FA |
| PIPER, Richard John RESIGNED | Director | 17 Dec 2018 | 05 Aug 2020 | England | June 1952 | Broers Building, 21 J J Thomson Avenue, Cambridge, CB3 0FA |
| PIPER, Richard John RESIGNED | Director | 02 Jul 2012 | 10 Sep 2015 | England | June 1952 | Broers Building, 21 J J Thomson Avenue, Cambridge, England, CB3 0FA, England |
| PRICE, Gregory Laurence RESIGNED | Director | 06 Sep 2021 | 30 Sep 2024 | England | January 1976 | 93, Fleet Road, Fleet, Hampshire, GU51 3PJ, United Kingdom |
| RICKETTS, Neill Gareth RESIGNED | Director | 12 Aug 2010 | 17 Dec 2010 | England | September 1970 | Callamore Cottage, Callamore, The Ruffit, Littledean, Gloucestershire, GL14 3LB, England |
| ROY, Keith John RESIGNED | Director | 09 Jun 2008 | 20 Jan 2010 | United Kingdom | May 1950 | Five Springs Cottage, Whitebrook, Monmouth, Gwent, NP25 4TY |
| SKAILES, John Anthony Derrick RESIGNED | Director | 17 Feb 1997 | 13 Nov 2002 | | January 1938 | 42 Monkhams Avenue, Woodford Green, Essex, IG8 0EY |
| SPINK, Geoffrey RESIGNED | Director | 15 Sep 2010 | 28 Jul 2011 | United Kingdom | April 1949 | 5, Lakeside Business Park, Swan Lane, Sandhurst, Berkshire, GU47 9DN, United Kingdom |
| STONE, Geoffrey Alan RESIGNED | Director | | 31 Jul 1997 | | July 1935 | 22 Woodland Way, Woodford Green, Essex, IG8 0QG |
| THORN, Jeremy Gordon RESIGNED | Director | 05 Mar 2010 | 02 Jul 2012 | England | March 1948 | Broers Building, 21 J J Thomson Avenue, Cambridge, CB3 0FA, England |
| WEATHERSTONE, Andrew Paul RESIGNED | Director | 13 Jan 2014 | 24 Sep 2020 | England | January 1964 | Broers Building, 21 Jj Thompson Avenue, Cambridge, CB3 0FA, United Kingdom |
| WELCH, Charles Peter RESIGNED | Director | 10 Sep 2015 | 31 Jan 2019 | United Kingdom | September 1962 | C/O Elektron Technology Plc, Broers Building, 21 J J Thomson Avenue, Cambridge, CB3 0FA, United Kingdom |
| WILSON, John Frederick RESIGNED | Director | 12 Aug 2010 | 26 Jan 2023 | United Kingdom | April 1976 | Broers Building 21 J J Thomson Avenue, Cambridge, CB3 0FA, England |
| WINTER, Alastair Stewart RESIGNED | Director | 17 Feb 1997 | 20 Dec 2002 | England | May 1948 | 55 Half Moon Lane, London, SE24 9JX |