| THOMPSON, Mark Hedley ACTIVE | Secretary | 05 Jan 2009 | | | | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| SCANLON, John James, Mr. ACTIVE | Director | 01 Jan 2020 | | England | November 1969 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| THORN, Christopher Derrick ACTIVE | Director | 01 Feb 2020 | | England | April 1981 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| COOPER, Elizabeth Jayne Clare RESIGNED | Secretary | 01 Jul 2001 | 31 Jul 2003 | | | 39 Church Road, Harlington, Bedfordshire, LU5 6LE |
| MCKENNA-MAYES, Graham Arthur RESIGNED | Secretary | 31 Jul 2003 | 05 Jan 2009 | | | 38 Bremer Road, Staines, Middlesex, TW18 4HU |
| RAISTRICK, Charles Stuart RESIGNED | Secretary | | 01 Jan 1993 | | | Ormonde House 5 St Georges Road, Hexham, Northumberland, NE46 2HG |
| THORNE, Simon John RESIGNED | Secretary | 19 May 1999 | 30 Jun 2001 | | | Walnut Cottage Englemere Park, Kings Ride, Ascot, Berkshire, SL5 8AE |
| WATSON, David John RESIGNED | Secretary | 01 Jan 1993 | 19 May 1999 | | | 13 Apperley Avenue, High Shincliffe, Durham, DH1 2TY |
| BABIN, Patrick RESIGNED | Director | 19 Apr 1996 | 19 May 1999 | | March 1958 | 57 Oak Lodge Chantry Square, Marloes Road, London, W8 5UH |
| CHAPRON, Christophe Andre Bernard RESIGNED | Director | 19 Feb 2007 | 29 Feb 2016 | England | October 1964 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| CRANSTON, David Gordon RESIGNED | Director | | 01 Jan 1993 | Uk | August 1937 | 2 Edge Hill Close, Ponteland, Newcastle Upon Tyne, NE20 9JX |
| DUVAL, Florent Thierry Antoine RESIGNED | Director | 01 Feb 2016 | 31 Oct 2021 | England | February 1976 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| GOODFELLOW, Ian Frederick RESIGNED | Director | | 31 May 2003 | England | January 1954 | Highlands Harewood Drive, Cold Ash, Thatcham, Berkshire, RG18 9PF |
| GORDON, Marek Robert RESIGNED | Director | 19 May 1999 | 31 May 2003 | England | February 1953 | 7 Woodbank Avenue, Gerrards Cross, Buckinghamshire, SL9 7PY |
| GRAVESON, Gavin RESIGNED | Director | 19 May 1999 | 01 May 2000 | | August 1963 | 5 Kington Rise, Claverdon, Warwick, Warwickshire, CV35 8PN |
| GREEN, Christopher Michael RESIGNED | Director | 28 Sep 1992 | 19 May 1999 | United Kingdom | October 1954 | South View House North Bank, Haydon Bridge, Northumberland, NE47 6LU |
| GUERIN, John Michael RESIGNED | Director | | 01 Jan 1993 | | April 1946 | 64 Harlsey Road, Stockton On Tees, Cleveland, TS18 5DQ |
| HAWTHORNE, Raymond RESIGNED | Director | 01 Apr 1994 | 22 Mar 1996 | | December 1949 | 16 Picktree Lodge, Chester Le Street, County Durham, DH3 4DJ |
| HESPE, David Anthony RESIGNED | Director | 19 May 1999 | 01 Sep 2002 | | March 1959 | 15 Birds Hill Road, Eastcote, Northamptonshire, NN12 8NF |
| HJORT, Per-Anders RESIGNED | Director | 31 May 2003 | 01 Oct 2008 | | December 1958 | Flat 76, 21 Sheldon Square, Paddington London, W2 6DS |
| LEAVER, John Frederick RESIGNED | Director | 19 May 1999 | 25 Oct 2001 | | May 1948 | 95 Gloucester Road, Rudgeway, South Gloucester, BS35 2QS |
| MACMILLAN, Ian RESIGNED | Director | | 01 Jan 1993 | | November 1943 | 4 Ash Banks, Allery Banks, Morpeth, Northumberland, NE61 1XB |
| NEWTON, James Edward RESIGNED | Director | 01 Apr 1994 | 26 Jul 1994 | England | April 1951 | The Sycamores, Matfen, Newcastle Upon Tyne, NE20 0RP |
| PALMER-JONES, David Courtenay RESIGNED | Director | 01 Oct 2008 | 01 Jan 2020 | United Kingdom | April 1963 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| SEARBY, Robert Anthony RESIGNED | Director | 19 May 1999 | 02 Mar 2001 | | September 1956 | 4 Davis Close, Marlow, Buckinghamshire, SL7 1SY |
| SEXTON, Ian Anthony RESIGNED | Director | 02 Mar 2001 | 19 Feb 2007 | United Kingdom | May 1956 | 31 Dedmere Road, Marlow, Buckinghamshire, SL7 1PE |
| TAYLOR, Paul RESIGNED | Director | 15 Dec 1995 | 19 May 1999 | | May 1959 | Callaly, Westfield Lane, Ryton, Tyne & Wear, NE40 3QE |
| THORNE, Simon John RESIGNED | Director | 19 May 1999 | 30 Jun 2001 | England | February 1967 | Walnut Cottage Englemere Park, Kings Ride, Ascot, Berkshire, SL5 8AE |
| WARD, Brian Eric RESIGNED | Director | 19 May 1999 | 31 Mar 2000 | England | November 1945 | Newton House, Newton, Kettering, Northamptonshire, NN14 1BW |
| WARD OBE, John Streeton RESIGNED | Director | 19 Apr 1996 | 19 May 1999 | England | September 1933 | 5 East Fields, Whitburn, Sunderland, SR6 7DA |
| WILSON, Peter George RESIGNED | Director | 01 Jan 1993 | 28 Nov 1993 | | April 1945 | Acomb Mill, The Ridings, Hexham, Northumberland, NE46 4PQ |