| SWARATMIKA, Swaratmika ACTIVE | Secretary | 06 May 2025 | | | | 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 Jun 2001 | 31 Jul 2003 | | | 39 Church Road, Harlington, Bedfordshire, LU5 6LE |
| KNIGHT, Joan RESIGNED | Secretary | 31 Jul 2003 | 06 May 2025 | | | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| MCCARTHY, Michael Christopher RESIGNED | Secretary | | 29 Sep 1995 | | | 24 Hatchgate Gardens, Burnham, Slough, Berkshire, SL1 8DD |
| SEARBY, Robert Anthony RESIGNED | Secretary | 29 Sep 1995 | 19 May 1999 | | | 4 Davis Close, Marlow, Buckinghamshire, SL7 1SY |
| THORNE, Simon John RESIGNED | Secretary | 19 May 1999 | 30 Jun 2001 | | | Walnut Cottage Englemere Park, Kings Ride, Ascot, Berkshire, SL5 8AE |
| CHAPRON, Christophe Andre Bernard RESIGNED | Director | 19 Feb 2007 | 29 Feb 2016 | England | October 1964 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| 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 | 19 May 1999 | 31 May 2003 | England | January 1954 | Highlands Harewood Drive, Cold Ash, Thatcham, Berkshire, RG18 9PF |
| GORDON, Marek Robert RESIGNED | Director | | 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 |
| 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 |
| JOHNSON, Eric James RESIGNED | Director | 20 Nov 1995 | 13 Feb 1998 | | January 1941 | 32 Cherry Acre, Chalfont St Peter, Buckinghamshire, SL9 0SX |
| KNOTT, David Robert RESIGNED | Director | 24 Jul 2000 | 01 Jun 2003 | | July 1948 | 1 Trimpley Close, Dorridge, West Midlands, B93 8TF |
| LEAVER, John Frederick RESIGNED | Director | 19 May 1999 | 01 Mar 2001 | | May 1948 | 95 Gloucester Road, Rudgeway, South Gloucester, BS35 2QS |
| MCCARTHY, Michael Christopher RESIGNED | Director | | 22 Dec 1995 | | October 1954 | 24 Hatchgate Gardens, Burnham, Slough, Berkshire, SL1 8DD |
| MORRIS, Phillip Arthur RESIGNED | Director | | 12 Apr 1996 | | October 1937 | 4 Newville, Weedon, Aylesbury, Buckinghamshire, HP22 4NP |
| PALMER-JONES, David Courtenay RESIGNED | Director | 01 Oct 2008 | 03 Jun 2015 | United Kingdom | April 1963 | Sita House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES |
| PENFOLD, Timothy James RESIGNED | Director | 29 Sep 1995 | 31 Jul 1998 | United Kingdom | June 1950 | 11 Dorney Reach Road, Dorney Reach, Maidenhead, Berkshire, SL6 0DX |
| SEARBY, Robert Anthony RESIGNED | Director | 29 Sep 1995 | 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 |
| THORNE, Simon John RESIGNED | Director | 19 May 1999 | 30 Jun 2001 | England | February 1967 | Walnut Cottage Englemere Park, Kings Ride, Ascot, Berkshire, SL5 8AE |
| VOLPI, John Patrick RESIGNED | Director | | 29 Sep 1997 | | December 1950 | Spyglass 20 Donnay Close, Gerrards Cross, Buckinghamshire, SL9 7PZ |
| WARD, Brian Eric RESIGNED | Director | 19 May 1999 | 31 Mar 2000 | England | November 1945 | Newton House, Newton, Kettering, Northamptonshire, NN14 1BW |