| GANI, Irfan ACTIVE | Secretary | 01 May 2022 | | | | 26, Stroudley Road, Brighton, East Sussex, BN1 4BH |
| GANI, Irfan ACTIVE | Director | 10 Jun 2021 | | Saudi Arabia | December 1979 | 26, Stroudley Road, Brighton, East Sussex, BN1 4BH |
| IBRAHIM, Kamiran, Dr. ACTIVE | Director | 01 Jul 2017 | | United Arab Emirates | September 1965 | 26, Stroudley Road, Brighton, East Sussex, BN1 4BH |
| BERRY, Christina RESIGNED | Secretary | 25 Apr 1994 | 26 Apr 1996 | | | 5 Saddleback Close, Boothstown Worsley, Manchester, M28 1UU |
| BROWN, Hugo Charles Crispin RESIGNED | Secretary | 14 Nov 2007 | 31 Mar 2010 | | | Ash House 43 Ely Road, Queen Adelaide, Ely, Cambridgeshire, CB7 4TZ |
| DUNCOMBE, Fiona Margaret RESIGNED | Secretary | 02 Jan 2013 | 01 Nov 2016 | | | Arcadis House, 34 York Way, London, N1 9AB, England |
| HUI, Carol RESIGNED | Secretary | 01 Nov 2001 | 24 May 2003 | | | GU8 |
| JONES, Carolyn Gaye RESIGNED | Secretary | 01 Nov 2016 | 01 May 2022 | | | 80, Fenchurch Street, London, EC3M 4BY, England |
| LANDER, Nicholas Paul RESIGNED | Secretary | 24 May 2003 | 14 Nov 2007 | | | Silver Howe 6 Ryders, Langton Green, Tunbridge Wells, Kent, TN3 0DX |
| MANTZ, Ann Elizabeth RESIGNED | Secretary | 26 Apr 1996 | 11 Feb 1999 | | | 21 Four Wents, Cobham, Surrey, KT11 2NE |
| MARATOS, Michael Christopher RESIGNED | Secretary | | 25 Apr 1994 | | | 2 Heyesleigh, Heyes Drive Timperley, Altrincham, Cheshire, WA15 6EY |
| SMITH, Andrew Peter RESIGNED | Secretary | 14 Aug 2009 | 11 Jan 2013 | | | Echq, 34 York Way, London, N1 9AB, United Kingdom |
| WHITE, Alison Scillitoe RESIGNED | Secretary | 11 Feb 1999 | 01 Nov 2001 | | | 101 Harefield Road, Uxbridge, Middlesex, UB8 1PL |
| ASHLEY, Neil RESIGNED | Director | 24 May 2003 | 14 Nov 2007 | United Kingdom | November 1936 | Burcot Grange, Burcot, Abingdon, Oxfordshire, OX14 3DJ |
| BARRETT, Darren Roy RESIGNED | Director | 04 Jul 2011 | 15 Jul 2012 | United Kingdom | September 1969 | 2, Craven Court, Willie Snaith Road, Newmarket, Suffolk, CB8 7FA, England |
| BROOKES, Alan Geoffrey RESIGNED | Director | 01 Mar 2014 | 01 Nov 2016 | England | November 1961 | Arcadis House, 34 York Way, London, N1 9AB, England |
| BROOKS, Keith Lawrence RESIGNED | Director | 01 Jan 2015 | 29 Feb 2016 | England | January 1966 | Arcadis House, 34 York Way, London, N1 9AB, England |
| CARROLL, Michael Dennis RESIGNED | Director | 04 Jul 2011 | 15 Oct 2012 | United Kingdom | August 1953 | 2, Craven Court, Willie Snaith Road, Newmarket, Suffolk, CB8 7FA, England |
| CAWTHORNE, David Alwyn RESIGNED | Director | 26 Apr 1996 | 01 Mar 1997 | | April 1944 | 21 Park Road, Oxted, Surrey, RH8 0AN |
| CLARK, Anne Rosemary RESIGNED | Director | 01 Jan 2016 | 01 Nov 2016 | England | December 1964 | Arcadis House, 34 York Way, London, N1 9AB |
| CROOK, Brian Victor, Dr RESIGNED | Director | 14 Nov 2007 | 22 Aug 2009 | United Kingdom | July 1947 | Westwood House High Ash Road, Ketteringham, Wymondham, Norfolk, NR18 9RG |
| DREWERY, Eric RESIGNED | Director | | 06 Jan 1994 | | June 1939 | 33 Cresta House, 133 Finchley Road, London, NW3 6HT |
| ENTWISTLE, Richard William RESIGNED | Director | 11 Nov 2002 | 24 May 2003 | | February 1953 | Crossways Crays Pond, Goring Heath, Oxfordshire, RG8 7QE |
| EWELL, Melvyn RESIGNED | Director | 28 Feb 2003 | 24 May 2003 | | September 1958 | 89 Northumberland Road, Leamington Spa, Warwickshire, CV32 6HQ |
| FAGIANO, Peter Michael John RESIGNED | Director | | 06 Jan 1994 | | November 1942 | 5 Keymer Gardens, Burgess Hill, West Sussex, RH15 0AF |
| FAMIGLIETTI, Joseph RESIGNED | Director | | 06 Jan 1994 | | August 1944 | 3689 Deer Trak Drive, Danville Ca 94506, FOREIGN, Usa |
| FIELD, John Peter, Doctor RESIGNED | Director | 11 Sep 1996 | 20 Dec 2001 | | March 1953 | 44 Wensley Road, Lowton, Warrington, WA3 2BA |
| FORTNEY, Ray A RESIGNED | Director | 06 Jan 1994 | 26 Apr 1996 | | July 1946 | 5000 Executive Parkway, Suite 500, San Ramon Ca 94583, United States Of America |
| HINTON, Bruce RESIGNED | Director | | 06 Jan 1994 | | July 1948 | 57 Northgate Road, Simsbury, Connecticut, 06070, Usa |
| HOLDING, John R RESIGNED | Director | 06 Jan 1994 | 26 Apr 1996 | | November 1948 | 1010 S 336th Street, Suite 220, Federal Way Wa 98003, United States Of America |
| IJNTEMA, Johannes Gerardus RESIGNED | Director | 01 Nov 2016 | 10 Jun 2021 | United Arab Emirates | May 1974 | 80, Fenchurch Street, London, EC3M 4BY, England |
| JAMES, Nigel John, Dr RESIGNED | Director | 06 Mar 1992 | 18 Sep 2002 | United Kingdom | June 1949 | 99 Moss Lane, Sale, Cheshire, M33 5BS |
| JENSEN, Peer Hakon RESIGNED | Director | | 06 Jan 1994 | | September 1943 | 3 Grange Park Place, Thurston Road Wimbledon, London, SW20 0EE |
| JONES, Howell Glyn RESIGNED | Director | 11 Sep 1996 | 04 Jan 2000 | | September 1953 | Holcroft, Common Lane, Lower Stretton, Warrington, Cheshire, WA4 4PD |
| JONES, Nigel John RESIGNED | Director | 01 Oct 1998 | 20 Dec 2001 | England | October 1958 | The Well House, Bramfield Road, Hertford, Hertfordshire, SG14 2QF |
| KALMS, Richard Bernard, The Honourable RESIGNED | Director | 24 May 2003 | 14 Nov 2007 | | March 1955 | 9 - 11 Grosvenor Gardens, London, SW1W 0BD |
| KAYSER, Michael Arthur RESIGNED | Director | 11 Sep 2002 | 15 Oct 2002 | United Kingdom | June 1955 | 17 Hartsbourne Avenue, Bushey Heath, Hertfordshire, WD23 1JP |
| KENNEDY, Ronald RESIGNED | Director | 11 Sep 1996 | 20 Dec 2001 | United Kingdom | August 1945 | 24 Felix Road, Gosport, Hampshire, PO12 4QZ |
| KING, Edmund Alec RESIGNED | Director | 26 Apr 1996 | 11 Sep 1996 | | August 1936 | Spindlewood, Pangbourne Hill, Pangbourne, Berkshire, RG8 8JS |
| LANDER, Jonathan Edward RESIGNED | Director | 24 May 2003 | 14 Nov 2007 | United Kingdom | January 1968 | Isenhurst House, Isenhurst, Heathfield, East Sussex, TN21 0TQ |
| LANDER, Nicholas Paul RESIGNED | Director | 24 May 2003 | 14 Nov 2007 | United Kingdom | September 1966 | Silver Howe 6 Ryders, Langton Green, Tunbridge Wells, Kent, TN3 0DX |
| LATTO, William Alexander RESIGNED | Director | 29 May 1996 | 30 Oct 1998 | | May 1944 | 10 Scarlet Oaks, Camberley, Surrey, GU15 1RD |
| MAW, Richard Jonathon Crompton RESIGNED | Director | 09 Oct 1997 | 31 Aug 1999 | United Kingdom | May 1954 | Ashley Croft, Two Dells Lane, Ashley Green, Chesham, Buckinghamshire, HP5 3RB |
| MCCORMACK, Gerard Joseph RESIGNED | Director | 01 Mar 1997 | 23 Oct 1998 | England | June 1952 | 16 Rectory Road, Wokingham, Berkshire, RG40 1DH |
| MILLER, David John RESIGNED | Director | 02 Nov 1998 | 10 Sep 2002 | United Kingdom | April 1962 | 1 Asmara Road, London, NW2 3SS |
| MORGAN, John Maxwell RESIGNED | Director | 11 Sep 1996 | 04 Jan 2000 | | August 1949 | 21 Rectory Road, Solihull, West Midlands, B91 3RJ |
| NEAL, Timothy RESIGNED | Director | 25 Oct 2012 | 01 Mar 2014 | England | January 1967 | Echq, 34 York Way, London, N1 9AB, United Kingdom |
| PILBEAM, Michael RESIGNED | Director | 02 Nov 1998 | 28 Feb 2001 | | September 1949 | Sloping Acre, Lockeridge, Marlborough, Wiltshire, SN8 4ED |
| RAMSDALE, Robert Wyatt RESIGNED | Director | 04 Jan 2000 | 20 Dec 2001 | | March 1958 | Rosemary Cottage Rosemary Lane, Rowledge, Farnham, Surrey, GU10 4DB |
| REID, Graham Matthew RESIGNED | Director | 01 Nov 2016 | 01 Jul 2017 | Uae | February 1962 | Arcadis House, 34 York Way, London, N1 9AB |
| SCHOLTENS, Michael J RESIGNED | Director | 06 Jan 1994 | 11 Jul 1994 | | March 1946 | 1010 S 336 Street, Suite 220, Federal Way Wa 98003, United States Of America |
| SMITH, Andrew Peter RESIGNED | Director | 12 Jul 2012 | 11 Jan 2013 | England | March 1969 | Echq, 34 York Way, London, N1 9AB, United Kingdom |
| STAPLES, Brian Lynn RESIGNED | Director | 19 Jan 1999 | 28 Feb 2003 | United Kingdom | April 1945 | Pendle House, Castle Hill Prestbury, Macclesfield, Cheshire, SK10 4AR |
| VINCE, Peter John RESIGNED | Director | 17 Jun 2009 | 31 Jul 2011 | United Kingdom | May 1958 | The Broughton, 6 Rednal Park Court, Kings Norton, Birmingham, West Midlands, B38 8DS |
| WASHINGTON, Jason Nicholas RESIGNED | Director | 01 Jun 1999 | 20 Dec 2001 | | May 1965 | 2 Brabham Mews, Moorside Road, Swinton, Manchester, Lancashire, M27 0HH |
| WILLIAMS, John Huw RESIGNED | Director | 11 Jan 2013 | 01 Nov 2016 | Uae | July 1964 | Arcadis House, 34 York Way, London, N1 9AB, England |
| YOUELL, Philip Anthony RESIGNED | Director | 11 Jan 2013 | 01 Jan 2015 | England | December 1960 | Echq, 34 York Way, London, N1 9AB, United Kingdom |