| 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 Oct 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 |
| LEWIS, Jack Malcolm RESIGNED | Secretary | | 01 Nov 2001 | | | Saddlers Croft Road, Crowborough, East Sussex, TN6 1DS |
| CARTWRIGHT, Keith Charles RESIGNED | Director | | 09 Jan 2002 | England | October 1941 | Redwood Cottage Church Way, Hurst Green, Oxted, Surrey, RH8 9EA |
| 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 |
| FOREMAN, Michael Kenneth RESIGNED | Director | | 16 Aug 1995 | | November 1934 | 43 Lowndes Square, London, SW1X 9JL |
| GOODFELLOW, Ian Frederick RESIGNED | Director | 01 Oct 2001 | 31 May 2003 | England | January 1954 | Highlands Harewood Drive, Cold Ash, Thatcham, Berkshire, RG18 9PF |
| GORDON, Marek Robert RESIGNED | Director | 31 May 2003 | 31 Dec 2007 | England | February 1953 | 7 Woodbank Avenue, Gerrards Cross, Buckinghamshire, SL9 7PY |
| JOHNSON, Eric James RESIGNED | Director | 15 Nov 1995 | 27 Jun 1997 | | January 1941 | 32 Cherry Acre, Chalfont St Peter, Buckinghamshire, SL9 0SX |
| MILLS, Stephen Terence RESIGNED | Director | | 08 Jan 2002 | England | January 1963 | Bonnibur Copthill Lane, Kingswood, Tadworth, Surrey, KT20 6HL |
| MILLS, Terrence George RESIGNED | Director | | 08 Feb 2002 | | November 1938 | Headley Hill House Lorretta Lodge, Tilley Lane, Headley, Epsom, Surrey, KT18 6EP |
| MOXON, Terrence Frederick RESIGNED | Director | | 31 May 2002 | | June 1936 | 19 Pointers Hill, Westcott, Surrey, RH4 3PF |
| PENFOLD, Timothy James RESIGNED | Director | | 27 Jun 1997 | United Kingdom | June 1950 | 11 Dorney Reach Road, Dorney Reach, Maidenhead, Berkshire, SL6 0DX |
| SCARBOROUGH, Philip John RESIGNED | Director | | 29 Jan 2002 | England | March 1952 | Galedon House, Hogs Back, Seale, Farnham, Surrey, GU10 1JX |
| SEXTON, Ian Anthony RESIGNED | Director | 01 Oct 2001 | 19 Feb 2007 | United Kingdom | May 1956 | 31 Dedmere Road, Marlow, Buckinghamshire, SL7 1PE |
| SHERWIN, David Andrew RESIGNED | Director | | 31 Jan 2002 | | January 1947 | 212 Ferrymead Avenue, Greenford, Middlesex, UB6 9TP |
| VOLPI, John Patrick RESIGNED | Director | 16 Aug 1995 | 15 Nov 1995 | | December 1950 | Spyglass 20 Donnay Close, Gerrards Cross, Buckinghamshire, SL9 7PZ |