| HILDRETH, Angela ACTIVE | Secretary | 20 Feb 2018 | | | | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| DAVIS, Gordon Roy ACTIVE | Director | 08 Jan 2024 | | England | January 1956 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| DUGGAN, Alexander James Hanbury ACTIVE | Director | 08 Aug 2025 | | England | December 1970 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| HILDRETH, Angela ACTIVE | Director | 20 Feb 2018 | | England | January 1980 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| JAMES, Kenneth William ACTIVE | Director | 01 Apr 2016 | | United States | May 1952 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| UNITT, Andrew ACTIVE | Director | 01 Jan 2022 | | England | July 1957 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| CLAYDEN, Anthony Louis RESIGNED | Secretary | 08 Oct 2001 | 08 May 2008 | | | 18 Roughgrove Copse, Binfield, Bracknell, Berkshire, RG42 4EZ |
| KEMP, Colin Anthony RESIGNED | Secretary | 28 Apr 2001 | 08 Oct 2001 | | | 16 Beechworth Road, Havant, Hampshire, PO9 1AX |
| MARTIN, Derek Adrian RESIGNED | Secretary | 08 May 2008 | 19 Feb 2018 | | | Sherwoods, The Street, Plaistow, Billingshurst, West Sussex, RH14 0PT, United Kingdom |
| WILSON, David Richard RESIGNED | Secretary | 25 Apr 2001 | 28 Apr 2001 | | | Pincott Cottage, Pincott Lane, West Horsley, Surrey, KT24 6JH |
| ARNOLD, Lisa RESIGNED | Director | 31 Mar 2008 | 31 Mar 2016 | England | April 1962 | Springway Farm, Greenway Lane Ullenwood, Cheltenham, GL53 9QR |
| BARDER, James Henry RESIGNED | Director | 25 Apr 2001 | 08 Jul 2025 | England | July 1959 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| CLARKE, John Milne RESIGNED | Director | 01 Feb 2012 | 18 Jul 2023 | England | December 1948 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| CLAYDEN, Anthony Louis RESIGNED | Director | 08 Oct 2001 | 31 May 2008 | England | April 1967 | 18 Roughgrove Copse, Binfield, Bracknell, Berkshire, RG42 4EZ |
| DAVIES, David Bryn RESIGNED | Director | 24 Sep 2001 | 12 Nov 2014 | Britain | July 1962 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| DRURY, Richard RESIGNED | Director | 24 Sep 2001 | 08 Jul 2003 | United Kingdom | January 1950 | Plas Onn Ffordd Pentre Bach, Nercwys, Mold, Flintshire, CH7 4EG |
| FREEMAN, Jonathan David RESIGNED | Director | 14 Jul 2003 | 31 Dec 2021 | United Kingdom | April 1965 | Tregout Farm, Crossways, Newcastle, Monmouthshire, NP25 5NS |
| KEMP, Colin Anthony RESIGNED | Director | 25 Apr 2001 | 08 Feb 2002 | | June 1946 | 16 Beechworth Road, Havant, Hampshire, PO9 1AX |
| MARTIN, Derek Adrian RESIGNED | Director | 24 Sep 2008 | 19 Feb 2018 | England | August 1961 | Sherwoods, The Street, Plaistow, Billingshurst, West Sussex, RH14 0PT, United Kingdom |
| NEEDHAM, Jeffrey Robert RESIGNED | Director | 01 Oct 2021 | 08 Jul 2025 | United States | May 1956 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| POTTER, William Duncan, Dr. RESIGNED | Director | 12 Jun 2001 | 01 Feb 2012 | United Kingdom | January 1947 | Madeline House, High Street Babraham, Cambridgeshire, CB22 3AG |
| PRUIJM, Ruud, Professor Doctor RESIGNED | Director | 12 Jun 2001 | 12 Jun 2002 | | April 1946 | Leeuwenflat S-Lands Wer 137, 3063gd, Rotterdam, FOREIGN, Holland |
| SLATER, Andrew RESIGNED | Director | 14 Jul 2003 | 31 Mar 2008 | | October 1947 | Orwell Dene, Levington Road, Nacton, Suffolk, IP10 0EJ |
| STAVELEY, Amanda Louise RESIGNED | Director | 30 Jan 2002 | 07 May 2003 | | April 1973 | 18 Three Kings Yard, Davies Street Mayfair, London, W1K 4JT |
| SUNIARA, Harmesh Kumar RESIGNED | Director | 31 Mar 2025 | 03 Dec 2025 | England | November 1970 | Surrey Technology Centre, 40 Occam Road, Guildford, Surrey, GU2 7YG |
| VERDONCK, Ernst RESIGNED | Director | 12 Jun 2001 | 08 Oct 2001 | | March 1961 | Vondelstraat 118 1054 Gs, Amsterdam, FOREIGN, Holland |