| BODHA, James ACTIVE | Secretary | 13 Jul 2026 | | | | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| BODHA, James Sanjay ACTIVE | Director | 13 Jul 2026 | | England | April 1967 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| MORREY, Donald Christopher RESIGNED | Secretary | 07 Sep 1993 | 01 Feb 1996 | | | 6 Fox Cover, Guilden Sutton, Chester, CH3 7HH |
| PARRY, Ceri Elisabeth RESIGNED | Secretary | 07 Oct 2004 | 23 Jun 2025 | | | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| SIBLEY, Alan John RESIGNED | Secretary | 29 Mar 1996 | 07 Oct 2004 | | | 11 Downes Way, Alderley Edge, Cheshire, SK9 7XB |
| VENABLES, Brian Robert RESIGNED | Secretary | | 07 Sep 1993 | | | 106 Woodland Avenue, Hove, East Sussex, BN3 6BN |
| BOWEN, Simon Christopher RESIGNED | Director | 26 Jun 2014 | 03 Dec 2015 | Wales | May 1960 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| CAMSEY, Granville Thomas Bateman RESIGNED | Director | 26 Jul 1993 | 31 Dec 1995 | | March 1936 | The White House, Lincoln Road Chalfont Heights, Chalfont St Peter, Buckinghamshire, SL9 9TQ |
| CASLEY, Henry Roberts RESIGNED | Director | | 19 Apr 1993 | England | October 1937 | Dogmore Cottage, Stoke Row, Henley On Thames, Oxfordshire, RG9 5PD |
| CROSS, Andrew Duncan RESIGNED | Director | 16 May 2005 | 31 Mar 2007 | | May 1953 | 6 Dunns Lane, Ashton Heyes, Chester, Cheshire, CH3 8BU |
| DAVIES, Neil RESIGNED | Director | 14 Oct 2020 | 08 Oct 2024 | Australia | July 1970 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| DAVIES, Neil RESIGNED | Director | 10 Sep 2012 | 27 Mar 2014 | United Kingdom | July 1970 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| DAVIES, Neil RESIGNED | Director | 01 Apr 2007 | 01 Apr 2009 | United Kingdom | July 1970 | 68 Acton Hall Walks, Wrexham, Clwyd, LL12 7YJ |
| DAVIS, Robert Peter RESIGNED | Director | 07 Oct 2004 | 31 Oct 2025 | United Kingdom | December 1965 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| DENNIS, Graham RESIGNED | Director | 01 Apr 2007 | 01 Apr 2009 | England | June 1935 | Ascot House Kiln Place, Malders Lane, Pinkneys Green, Berkshire, SL6 6NJ |
| DEVANEY, John Francis RESIGNED | Director | 26 Jul 1993 | 02 May 2003 | United Kingdom | June 1946 | Kettleshill Farm, Under River, Sevenoaks, Kent, TN15 0RX |
| DRINKWATER, Clive RESIGNED | Director | 17 Jul 2012 | 17 Jan 2018 | England | October 1958 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| EXELL, Stuart Francis, Doctor RESIGNED | Director | | 16 May 2005 | England | October 1945 | Crowsfoot Cottage, Platts Lane, Stapleford, Cheshire, CH3 8HR |
| FARRANCE, Roger Arthur RESIGNED | Director | | 07 Sep 1993 | | November 1933 | Amulree 14 Bathgate Road, Wimbledon, London, SW19 5PN |
| HARRIS, Neil Barry RESIGNED | Director | 10 Sep 2012 | 30 Sep 2016 | England | July 1966 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| HARVEY, Steven James RESIGNED | Director | 24 Nov 2016 | 08 Oct 2024 | England | July 1972 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| HODGETT, David Lowry, Dr RESIGNED | Director | 07 Sep 1993 | 16 May 2005 | | May 1944 | 56 Newton Lane, Chester, Cheshire, CH2 2HJ |
| HUGHES, Michael Alan, Professor RESIGNED | Director | 26 Jul 1993 | 29 Oct 2014 | England | June 1945 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| LEES, Michael Ian, Dr RESIGNED | Director | 16 May 2005 | 01 Apr 2009 | England | April 1957 | 24 Heath Drive, Tarvin, Chester, Cheshire, CH3 8EZ |
| LLOYD, David Geoffrey RESIGNED | Director | 01 Apr 2009 | 30 Sep 2011 | United Kingdom | December 1961 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| LOWSLEY, Christopher John RESIGNED | Director | 16 May 2005 | 01 Apr 2009 | United Kingdom | October 1963 | 12 Wadeson Way, Croft, Warrington, Cheshire, WA3 7JP |
| MATHIESON, Mark William RESIGNED | Director | 01 Apr 2010 | 11 Jun 2015 | England | September 1966 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| MEE, David Cyril RESIGNED | Director | 01 Oct 1993 | 31 Mar 1996 | | June 1940 | The Snug, Hubbards Lane, Hessett Bury St Edmunds, Suffolk, IP30 9BG |
| MORRIS, David Richard RESIGNED | Director | | 02 Sep 1997 | | July 1934 | 7 Fernwood, Clayton Road Jesmond, Newcastle Upon Tyne, Tyne And Wear, NE1 6NE |
| MULLETT, Alan Vivian RESIGNED | Director | 01 Oct 2011 | 15 Apr 2015 | United Kingdom | December 1952 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| MULLETT, Alan Vivian RESIGNED | Director | 01 Apr 2007 | 22 Dec 2008 | United Kingdom | December 1952 | The Butlers House, Patshull Park Burnhill Green, Wolverhampton, Shropshire, WV6 7HY |
| NORRIS-GREY, Kathryn Trudy RESIGNED | Director | 25 Feb 2010 | 31 Mar 2012 | United Kingdom | February 1960 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| PAILLET, Lionel Jean RESIGNED | Director | 07 May 2021 | 08 Oct 2024 | France | November 1967 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| PARRY, Ceri Elisabeth RESIGNED | Director | 16 May 2005 | 01 Aug 2009 | | March 1963 | 21 Blackbrook Avenue, Hawarden, Flintshire, CH5 3HJ |
| PERCIVAL, Ruth Hannah RESIGNED | Director | 22 May 2018 | 14 Feb 2020 | England | May 1973 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| ROBERTS, David Alyn RESIGNED | Director | 05 Nov 2019 | 08 Oct 2024 | United Kingdom | April 1977 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| ROBERTS, David Martin RESIGNED | Director | 16 May 2005 | 04 May 2006 | | November 1962 | 10 Heol Awel, Abergele, Flintshire, LL22 7UQ |
| ROSS, Colin RESIGNED | Director | 16 May 2005 | 01 Apr 2009 | United Kingdom | July 1950 | 1 Albany Mews, Montagu Avenue, Newcastle Upon Tyne, Tyne & Wear, NE3 4JW |
| SAMPSON, Lynne Mary RESIGNED | Director | 05 Nov 2019 | 08 Oct 2024 | England | March 1965 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| SAVINSON, Richard RESIGNED | Director | | 02 Dec 1992 | | March 1931 | 12 Beresford Avenue, East Twickenham, Twickenham, Middlesex, TW1 2PY |
| SCHOFIELD, Jonathan Hugh RESIGNED | Director | 01 Oct 2017 | 08 Oct 2024 | United Kingdom | February 1961 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| SIBLEY, Alan John RESIGNED | Director | 02 Sep 1997 | 16 May 2005 | England | October 1957 | 11 Downes Way, Alderley Edge, Cheshire, SK9 7XB |
| STRONG, David Terrence George, Dr RESIGNED | Director | 29 Mar 1996 | 30 Jun 1998 | | May 1953 | The Mill House, Tilstone Fearnall, Tarporley, Cheshire, CW6 9QH |
| WALKER, John Anthony RESIGNED | Director | 07 Sep 1993 | 01 Apr 2009 | United Kingdom | April 1945 | Apartment 1, 1761 City Walls, Chester, CH1 2NY |
| WARING, Walter RESIGNED | Director | | 11 Aug 1992 | | August 1927 | The Hall, Little Welnetham, Bury St Edmunds, Suffolk, IP30 0DA |
| WILDING, Mark Steven RESIGNED | Director | 05 Nov 2019 | 08 Oct 2024 | United Kingdom | June 1969 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| WYNNE, Julie RESIGNED | Director | 25 May 2016 | 13 Jul 2026 | United Kingdom | September 1971 | Capenhurst Technology Park, Capenhurst, Chester, Cheshire, CH1 6ES |
| YOUNG, Arnold Roger Alexander RESIGNED | Director | | 16 May 1995 | | January 1944 | Lossiehall, Liff, Dundee, DD2 5NJ |