| BOARD, Jeremy Roger ACTIVE | Director | 03 Jul 2024 | | England | September 1961 | Bardena, Carnkie, Helston, Cornwall, TR13 0DP, England |
| COLLINS, Andrew Steven ACTIVE | Director | 03 Aug 2021 | | England | September 1973 | Prestige House, Green Lane, Challock, Ashford, Kent, TN25 4FN, England |
| GILLMORE, Gavin Kenneth, Professor ACTIVE | Director | 09 Sep 2002 | | United Kingdom | January 1963 | 7, Leighton Way, Epsom, Surrey, KT18 7QZ, United Kingdom |
| GILMOUR, David William ACTIVE | Director | 17 Jul 2025 | | Scotland | May 1981 | Socotec House, Bretby Business Park, Bretby, Burton-On-Trent, DE15 0YZ, England |
| GOODE, Anthony Paul ACTIVE | Director | 03 Aug 2021 | | Wales | June 1978 | Heanor Gate, C/O Visqueen, Heanor Gate Road, Heanor, Derbyshire, DE75 7RG, England |
| HANCOCK, Michael Lee Philip ACTIVE | Director | 05 Jul 2023 | | England | February 1990 | Unit 32 Old Worle Quarry, Lower Kewstoke Road, Worle, Weston-Super-Mare, BS22 9LF, England |
| NAYLOR, John Paul, Mr. ACTIVE | Director | 10 Jul 2014 | | England | February 1976 | 7/8, Darwin House, Corby Gate Business Park, Corby, Northamptonshire, NN17 5JG, England |
| SPARKS, John Bryan ACTIVE | Director | 07 Jul 2022 | | England | February 1967 | 4100, Park Approach, Leeds, LS15 8GB, England |
| WATERS, Lee Richard ACTIVE | Director | 17 Jul 2025 | | Wales | September 1984 | Meadow View, Blaenwaun, Whitland, SA34 0JD, Wales |
| PEAD, Diane Vida, Mrs. RESIGNED | Secretary | 28 Jun 1991 | 23 Jun 2021 | | | Thamesdale Squires Bridge Road, Shepperton, Middlesex, TW17 0JZ |
| AHERN, Brian Henry Walter RESIGNED | Director | 28 Jun 1991 | 10 Jun 2018 | England | April 1936 | 11 Nickleby Road, Clanfield, Waterlooville, Hampshire, PO8 0RH |
| ANGELL, William James, Professor RESIGNED | Director | 02 Jul 2009 | 10 Jul 2014 | Usa | June 1947 | 2101, Kenwood Parkway, Minneapolis, Mn 55405, United States |
| ATCHISON, Peter Stuart RESIGNED | Director | 07 Jul 2011 | 14 Jul 2016 | England | April 1960 | 10, Main Street, Woodnewton, Peterborough, Cambridgeshire, PE8 5EB, United Kingdom |
| BANFIELD, Andrew Eric Joseph RESIGNED | Director | 02 Jul 2003 | 23 Feb 2004 | | January 1942 | 15 Northwood Road, Carshalton Beeches, Surrey, SM5 3JA |
| BLYTHE, Alan RESIGNED | Director | 17 Nov 1999 | 20 Oct 2000 | | July 1944 | Ellerburn, Sand Road, Wedmore, Somerset, BS28 4BY |
| BOARD, Jeremy Roger RESIGNED | Director | 09 Jul 2015 | 17 Oct 2019 | England | September 1961 | Terminal House, Station Approach, Shepperton, Middx., TW17 8AS |
| BRADBURY-WILLIAMS, John Clifford RESIGNED | Director | 01 Jul 1998 | 09 Mar 2003 | | November 1925 | 48 Dowell Close, Taunton, Somerset, TA2 6BA |
| BRADBURY-WILLIAMS, John Clifford RESIGNED | Director | 29 Jun 1993 | 29 Feb 1996 | | November 1925 | 48 Dowell Close, Taunton, Somerset, TA2 6BA |
| DONAGHUE, Barry William RESIGNED | Director | 26 Oct 1992 | 07 Dec 1994 | | January 1944 | 49 Melfort Drive, Linslade, Leighton Buzzard, Bedfordshire, LU7 7XN |
| DUGDALE, Maria Forbord, Dr RESIGNED | Director | 14 Nov 2019 | 16 Feb 2022 | England | February 1979 | 28, Southway, Carshalton, SM5 4HW, England |
| DUGDALE, Maria Forbord, Dr RESIGNED | Director | 10 Jul 2014 | 09 Jul 2015 | United Kingdom | February 1979 | Terminal House, Station Approach, Shepperton, Middx., TW17 8AS |
| ELLARD, Alan James RESIGNED | Director | 27 Feb 1996 | 02 Jul 2009 | Ireland | January 1952 | Woodlands, Raleigh North, Macroom, County Cork, IRISH, Republic Of Ireland |
| FREEMAN, Martin Humphrey RESIGNED | Director | 05 Jul 2007 | 02 Jul 2009 | England | January 1948 | Staddlestone Cottage, Rimpton, Yeovil, Somerset, BA22 8AB |
| FRYER, Frederick Alfred, Professor RESIGNED | Director | 01 Aug 2000 | 20 Aug 2002 | | May 1937 | 76 Wellington Avenue, South Tottenham, London, N15 6BB |
| GLOVER, David Halton Gaskell RESIGNED | Director | 26 Oct 1992 | 20 May 1995 | | July 1940 | Highfields 20 Teigh Road, Market Overton, Oakham, Leicestershire, LE15 7PW |
| MALPASS, Richard Ian Thomas RESIGNED | Director | 18 May 1994 | 13 Jul 2000 | United Kingdom | September 1954 | 15 Silvertrees Drive, Maidenhead, Berkshire, SL6 4QJ |
| MARSHALL, James RESIGNED | Director | 26 Oct 1992 | 28 Jun 1993 | | September 1956 | 4 Morston, Thornford, Sherborne, Dorset, DT9 6RB |
| MARTIN, Malcolm John RESIGNED | Director | 26 Oct 1992 | 10 Jul 2014 | United Kingdom | March 1944 | Landews Farm Green Lane, Challock, Ashford, Kent, TN25 4BL |
| PAPWORTH, Dennis Stephen RESIGNED | Director | 28 Jun 1991 | 31 Jul 2010 | United Kingdom | July 1921 | Cariad, 2 Coltsfoot Drive, Campion Way Sheringham, Norfolk, NR26 8XG |
| PEAD, Diane Vida, Mrs. RESIGNED | Director | 09 Jul 2015 | 23 Jun 2021 | England | October 1949 | Terminal House, Station Approach, Shepperton, Middx., TW17 8AS |
| PICKARD, David John Francis RESIGNED | Director | 16 Jul 1998 | 05 Jul 2007 | | November 1944 | Dickensfield Pen Y Van, Monmouth, Monmouthshire, NP5 4QY |
| REID, Ronald Frederick RESIGNED | Director | 06 Jul 1998 | 13 Jul 2017 | England | May 1950 | 105 Northampton Road, Kettering, Northamptonshire, NN15 7JY |
| ROYSTON, George Stuart RESIGNED | Director | 23 Feb 2004 | 22 Oct 2004 | | July 1944 | South View House, Potbridge, Odiham, Hook, Hampshire, RG29 1JN |
| SPENCER, Nichola Ann RESIGNED | Director | 14 Nov 2019 | 24 Jan 2022 | England | October 1965 | 28, Southway, Carshalton, SM5 4HW, England |
| SPENCER, Terence Albert William RESIGNED | Director | 31 Aug 2001 | 14 Nov 2019 | United Kingdom | July 1933 | Andridge House 160 Midland Road, Wellingborough, Northamptonshire, NN8 1NG |
| STEWART, Antony RESIGNED | Director | 01 Jul 2010 | 09 Jul 2015 | England | June 1961 | 17, Clover Lane, Kingswinford, West Midlands, DY6 0DT, United Kingdom |
| TORNBERG, Roger RESIGNED | Director | 18 May 1994 | 10 Jul 2014 | United Kingdom | May 1949 | 8 Demswell, Brixworth, Northampton, Northamptonshire, NN6 9BL |
| WATERS, Richard Philip RESIGNED | Director | 05 Jul 2023 | 17 Jul 2025 | Wales | February 1962 | Floor 1 Mermaid House, Pentre Road, St. Clears, Carmarthen, SA33 4LR, Wales |