| BARNETT, Kristina ACTIVE | Secretary | 26 Sep 2008 | | | | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| ASHLEY, Richard Martin ACTIVE | Director | 01 Jan 2024 | | Scotland | July 1948 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| BARKHAM, Rebecca Elizabeth ACTIVE | Director | 01 Jan 2026 | | United Kingdom | August 1992 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| BRENT, Norman Frederick ACTIVE | Director | 01 Jan 2024 | | England | November 1949 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| CHATER, Michael William Edward ACTIVE | Director | 01 Jan 2024 | | England | June 1952 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| FROST, Teresa June ACTIVE | Director | 01 Jan 2026 | | England | May 1962 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| GROSE, William Jeffrey ACTIVE | Director | 01 Jan 2025 | | England | June 1954 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| HISCOCKS, Edwin James Stallibrass ACTIVE | Director | 01 Jan 2025 | | England | February 1950 | Westfield House, Back Lane, Ramsbury, Marlborough, SN8 2QY, England |
| LANCE, George Robert White ACTIVE | Director | 01 Jan 2025 | | Wales | March 1993 | Atkins Realis, 2 Capital Quater, Tyndall Street, Cardiff, CF10 4BZ, Wales |
| MURPHY, Yvonne Geraldine ACTIVE | Director | 01 Jan 2025 | | Ireland | June 1988 | Mott Macdonald, 5 Eastgate Avenue, Eastgate, Little Island, Cork, Ireland |
| WALTER, Howard John ACTIVE | Director | 01 Jan 2026 | | England | November 1957 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| WANKLYN, Simon Christopher Kenneth ACTIVE | Director | 01 Jan 2025 | | Wales | July 1981 | Waterman Aspen Ltd, Springfield Road, Chelmsford, CM2 6FA, England |
| WHITE, Robert James Hamilton ACTIVE | Director | 01 Jan 2023 | | New Zealand | March 1966 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| BALMFORTH, David John, Professor RESIGNED | Director | 01 Jan 2020 | 31 Dec 2022 | England | February 1947 | Pye Corner, Chapel Hill, Speen, Princes Risborough, HP27 0SP, England |
| BARKHAM, Rebecca RESIGNED | Director | 01 Jan 2023 | 31 Dec 2024 | England | August 1992 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| BARTON, Thomas Treherne RESIGNED | Director | 01 Jan 2015 | 31 Dec 2017 | United Kingdom | March 1949 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| BRENT, Norman Frederick RESIGNED | Director | 01 Jan 2021 | 31 Dec 2022 | England | November 1949 | Hazelwood, Vicarage Drive, Hedge End, Southampton, SO30 4DU, England |
| BREW, Edmund David RESIGNED | Director | 26 Sep 2008 | 31 Dec 2011 | United Kingdom | August 1944 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| BURNETT, Michael Derek RESIGNED | Director | 01 Jan 2012 | 31 Dec 2014 | England | March 1955 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| CALVERLEY, Jonathan Preston RESIGNED | Director | 01 Jan 2018 | 31 Dec 2020 | England | December 1949 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| CHATER, Michael William Edward RESIGNED | Director | 01 Jan 2019 | 31 Dec 2021 | England | June 1952 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| CHATER, Michael William Edward RESIGNED | Director | 01 Jan 2015 | 31 Dec 2017 | England | June 1952 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| CHATER, Michael William Edward RESIGNED | Director | 26 Sep 2008 | 31 Dec 2013 | England | June 1952 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| DELLOW, Stephen James RESIGNED | Director | 01 Jan 2019 | 31 Dec 2020 | England | December 1965 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| DINGLEY, Karen Louise RESIGNED | Director | 01 Jan 2011 | 31 Dec 2013 | United Kingdom | February 1972 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| FIELD, Michael RESIGNED | Director | 01 Jan 2012 | 31 Dec 2014 | United Kingdom | September 1950 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| FLOWER, Ian William RESIGNED | Director | 28 Oct 2008 | 31 Dec 2011 | Wales | October 1949 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| FROST, Teresa June RESIGNED | Director | 01 Jan 2021 | 31 Dec 2024 | England | May 1962 | 5, Ropehaven Close, St. Austell, PL25 4DZ, England |
| FROST, Teresa June RESIGNED | Director | 01 Jan 2017 | 31 Dec 2019 | England | May 1962 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| FROST, Teresa June RESIGNED | Director | 01 Jan 2013 | 31 Dec 2015 | England | May 1962 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| GALLEAR, David RESIGNED | Director | 01 Jan 2013 | 31 Dec 2015 | England | April 1945 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| GALLEAR, David RESIGNED | Director | 26 Sep 2008 | 31 Dec 2011 | England | April 1945 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| GEE, Ian RESIGNED | Director | 01 Jan 2016 | 31 Dec 2018 | England | August 1966 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| GRAY, Christopher David RESIGNED | Director | 01 Jan 2017 | 31 Dec 2019 | Wales | August 1954 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| GRIFFITHS, Alun RESIGNED | Director | 01 Jan 2013 | 31 Dec 2015 | Wales | August 1945 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| HANSFORD, Peter George, Dr RESIGNED | Director | 01 Jan 2023 | 30 Dec 2025 | England | March 1954 | 4, Bath Court, Kings Esplanade, Hove, BN3 2WP, England |
| HARDY BISHOP, Philip RESIGNED | Director | 01 Jan 2022 | 31 Dec 2024 | United Kingdom | July 1978 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| HARDY-BISHOP, Phillip Antony RESIGNED | Director | 26 Sep 2008 | 31 Dec 2013 | United Kingdom | July 1978 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| HATTERSLEY, David Roberts RESIGNED | Director | 26 Sep 2008 | 31 Dec 2010 | England | March 1933 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| HILLARY, Colin RESIGNED | Director | 01 Jan 2023 | 31 Dec 2025 | England | June 1950 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| HILLARY, Colin RESIGNED | Director | 01 Jan 2021 | 26 Jan 2022 | England | June 1950 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| HILLARY, Colin RESIGNED | Director | 01 Jan 2018 | 31 Dec 2021 | England | June 1950 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| HILLARY, Colin RESIGNED | Director | 01 Jan 2014 | 31 Dec 2016 | England | June 1950 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| HISCOCKS, Edwin James Stallibrass RESIGNED | Director | 01 Jan 2020 | 31 Dec 2022 | England | February 1950 | 71, Michaelmas Road, Coventry, CV3 6HF, England |
| HISCOCKS, Edwin James Stallibrass RESIGNED | Director | 01 Jan 2016 | 31 Dec 2018 | England | February 1950 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| HISCOCKS, Edwin James Stallibrass RESIGNED | Director | 01 Jan 2012 | 31 Dec 2014 | England | February 1950 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| HISCOCKS, Edwin James Stallibrass RESIGNED | Director | 26 Sep 2008 | 31 Dec 2010 | England | February 1950 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| HYDE, Jason RESIGNED | Director | 01 Jan 2022 | 31 Dec 2023 | England | September 1987 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| JURKONYTE, Giedre RESIGNED | Director | 01 Jan 2023 | 31 Dec 2025 | England | May 1993 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| JURKONYTE, Giedre RESIGNED | Director | 01 Jan 2019 | 31 Dec 2021 | England | May 1993 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| KEMP, William Ronald RESIGNED | Director | 01 Jan 2016 | 31 Dec 2018 | England | September 1943 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| KEMP, William Ronald RESIGNED | Director | 01 Jan 2012 | 31 Dec 2014 | England | September 1943 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| KEMP, William Ronald RESIGNED | Director | 26 Sep 2008 | 31 Dec 2010 | England | September 1943 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| KNIGHTS, Megan RESIGNED | Director | 01 Jan 2019 | 31 Dec 2021 | England | June 1983 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| LAING, Kenneth RESIGNED | Director | 01 Jan 2017 | 31 Dec 2019 | Scotland | September 1956 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| LARKIN, Stephen RESIGNED | Director | 01 Jan 2018 | 31 Dec 2020 | England | December 1968 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| LEE, Hooi Ying RESIGNED | Director | 01 Jan 2022 | 31 Dec 2024 | England | September 1975 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| LEE, Hooi Ying RESIGNED | Director | 01 Jan 2018 | 31 Dec 2020 | England | September 1975 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| MARSDEN, Bernard RESIGNED | Director | 26 Sep 2008 | 31 Dec 2010 | United Kingdom | October 1935 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| MCAVOY, Angus Robin RESIGNED | Director | 28 Oct 2008 | 31 Dec 2010 | United Kingdom | October 1944 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| MILLARD, Robert John RESIGNED | Director | 01 Jan 2019 | 31 Dec 2021 | England | June 1977 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| MOUATT, John Fredrick Beales RESIGNED | Director | 01 Jan 2011 | 31 Dec 2013 | England | August 1944 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| MURPHY, Yvonne RESIGNED | Director | 01 Jan 2023 | 30 Jan 2023 | Ireland | June 1988 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| MURPHY, Yvonne RESIGNED | Director | 01 Jan 2020 | 31 Dec 2022 | Ireland | June 1988 | Lower Ballinora, Lower Ballinora, Waterfall, Cork, T12 E 7rc, Ireland |
| MURPHY, Yvonne RESIGNED | Director | 01 Jan 2016 | 31 Dec 2018 | Wales | June 1988 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| OAKERVEE, Douglas Edwin, Sir RESIGNED | Director | 01 Jan 2013 | 31 Dec 2015 | England | December 1940 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| OLIVER, Paul Hunter RESIGNED | Director | 01 Jan 2021 | 30 Jan 2024 | England | September 1972 | 41, Whitycombe Way, Exeter, EX4 2NR, England |
| OLIVER, Paul Hunter RESIGNED | Director | 01 Jan 2012 | 31 Dec 2014 | England | September 1972 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| OLIVER, Paul Hunter RESIGNED | Director | 26 Sep 2008 | 31 Dec 2010 | England | September 1972 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| ORR, David Malcolm RESIGNED | Director | 01 Jan 2014 | 31 Dec 2016 | United Kingdom | August 1953 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| ORR, David Malcolm RESIGNED | Director | 01 Jan 2010 | 31 Dec 2012 | United Kingdom | August 1953 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| PORTER, David Norman RESIGNED | Director | 01 Jan 2021 | 31 Dec 2022 | Northern Ireland | February 1971 | County Hall, Castlerock Road, Coleraine, BT51 3HS, Northern Ireland |
| PORTER, David Norman RESIGNED | Director | 01 Jan 2015 | 31 Dec 2018 | Northern Ireland | February 1971 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| ROGERS, William Nathan RESIGNED | Director | 26 Sep 2008 | 31 Dec 2011 | United Kingdom | February 1946 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| SCRIMGEOUR, Andrew Donald RESIGNED | Director | 01 Jan 2014 | 31 Dec 2016 | Scotland | May 1961 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| SCRIMGEOUR, Andrew Donald RESIGNED | Director | 01 Jan 2010 | 31 Dec 2011 | Scotland | May 1961 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| STURGESS, Jonathan Conrad Lucas RESIGNED | Director | 01 Jan 2020 | 31 Dec 2022 | England | November 1967 | Boxhouse, Weston Grove, Ross-On-Wye, HR9 5LU, United Kingdom |
| STURGESS, Jonathan Conrad Lucas RESIGNED | Director | 01 Jan 2015 | 31 Dec 2017 | England | November 1967 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| TAYLOR, Brian RESIGNED | Director | 01 Jan 2014 | 31 Dec 2014 | England | March 1948 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| THOMAS, David RESIGNED | Director | 01 Jan 2010 | 31 Dec 2012 | United Kingdom | September 1963 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| WATERS, Brian Edward RESIGNED | Director | 01 Jan 2015 | 31 Dec 2017 | England | November 1934 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY, England |
| WATERS, Brian Edward RESIGNED | Director | 01 Jan 2010 | 31 Dec 2013 | England | November 1934 | 30, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |
| WDOWINSKA, Izabela RESIGNED | Director | 01 Jan 2021 | 31 Dec 2023 | England | May 1983 | 52, Queensway, Didcot, OX11 8LU, England |
| YATES, Graham RESIGNED | Director | 01 Jan 2022 | 31 Dec 2024 | England | July 1962 | 5, Mill Hill Close, Haywards Heath, West Sussex, RH16 1NY |