| CONDLIFFE, James Thomas ACTIVE | Secretary | 31 Oct 2025 | | | | 210, Pentonville Road, London, N1 9JY, England |
| CLAVIE, Valerie Isabelle Marie ACTIVE | Director | 07 Nov 2022 | | France | April 1968 | 210, Pentonville Road, London, N1 9JY, England |
| CONDLIFFE, James Thomas ACTIVE | Director | 31 Oct 2025 | | United Kingdom | October 1966 | 210, Pentonville Road, London, N1 9JY, England |
| SWAINSBURY, Katherine ACTIVE | Director | 02 Apr 2026 | | United Kingdom | January 1976 | 210, Pentonville Road, London, N1 9JY, England |
| BABIN, Patrick Claude RESIGNED | Secretary | | 01 Jan 1993 | | | 7 Compton Terrace, London, N1 2UN |
| DE VOGUE, Melchior RESIGNED | Secretary | 16 Feb 1996 | 25 Apr 2000 | | | 84 Barnsbury Road, London, N1 0ES |
| GOUGH, Celia Rosalind RESIGNED | Secretary | 07 Nov 2022 | 31 Oct 2025 | | | 210, Pentonville Road, London, N1 9JY, England |
| GREEN, Christopher Michael RESIGNED | Secretary | 25 Apr 2000 | 20 Oct 2003 | | | South View House North Bank, Haydon Bridge, Northumberland, NE47 6LU |
| HUDSON, Adrian James RESIGNED | Secretary | 17 Oct 2003 | 01 Aug 2004 | | | 7 The Rowans Roman Field, Holme On Spalding Moor, York, YO43 4EQ |
| LOWE, Jonathan RESIGNED | Secretary | | 16 Feb 1996 | | | Lealands Farmhouse, Lower Green Blackmore End, Braintree, Essex, CM7 4DU |
| MCKENNA-MAYES, Graham Arthur RESIGNED | Secretary | 01 Aug 2004 | 05 Jan 2009 | | | 38 Bremer Road, Staines, Middlesex, TW18 4HU |
| THOMPSON, Mark Hedley RESIGNED | Secretary | 05 Jan 2009 | 07 Nov 2022 | | | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| BABIN, Patrick RESIGNED | Director | 04 Jan 1993 | 25 Jul 2002 | | March 1958 | 33 Wellington Court, 116 Knightsbridge, London, SW1X 7PL |
| BOURSIER, Jean-Marc Marc RESIGNED | Director | 08 Feb 2005 | 20 Jul 2007 | France | October 1967 | 11 Rue De La Pompe, Paris, 75116, FOREIGN, France |
| BRADBEER, John Derek Richardson, Sir RESIGNED | Director | 22 Apr 1992 | 25 Apr 2000 | | October 1931 | Forge Cottage, Shilvington Ponteland, Newcastle Upon Tyne, Tyne & Wear, NE20 0AP |
| BRONGNIART, Philippe RESIGNED | Director | 11 Nov 1993 | 25 Apr 2000 | | January 1939 | 72 Avenue De La Liberte, Nanterre 92022 Cedex France, FOREIGN |
| CATHERIN, Jean, Monsieur RESIGNED | Director | | 15 Jan 1993 | | September 1943 | 32 Avenue Pablo Picasso, 92022 Nanterre Cadex, FOREIGN, France |
| CHAIGNEAU, Alain RESIGNED | Director | 01 Apr 2000 | 08 Feb 2005 | | September 1951 | 20 Rue Beaujon, 75008 Paris, France, FOREIGN |
| CHAPRON, Christophe Andre Bernard RESIGNED | Director | 19 Feb 2007 | 29 Feb 2016 | England | October 1964 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| CHENG, Henry Kar Shun RESIGNED | Director | | 07 Jan 2002 | | December 1945 | New World Developments Co Ltd New World Tower 30/F, 18 Queens Road Central, Hong Kong |
| CHENG, Kar Shing RESIGNED | Director | 26 May 1994 | 07 Jan 2002 | | November 1952 | 12 Repulse Bay Road, Hong Kong, Hong Kong, FOREIGN |
| CHENG, Yu Tung RESIGNED | Director | | 26 May 1994 | | August 1925 | 12 Repulse Bay Road, Hong Kong, Hong Kong |
| COULOMB, Rene Paul, Monsieur RESIGNED | Director | | 25 Apr 2000 | | November 1932 | Lyonnaise Des Eaux-Dumez, 72 Avenue De Lane Liberte 92000 Nanterre, FOREIGN, France |
| CROS, Christophe RESIGNED | Director | 01 Apr 2004 | 08 Feb 2005 | France | August 1959 | 4 Rue Thenard, Paris, 75005, FOREIGN, France |
| CUTHBERT, John Arthur RESIGNED | Director | 01 Nov 2001 | 23 May 2003 | United Kingdom | February 1953 | 9 Larwood Court, Chester Le Street, Durham, DH3 3QQ |
| DE PANAFIEU, Guy RESIGNED | Director | | 30 Aug 1997 | | April 1943 | 52 Rue De Lisbonne, Paris 75008, FOREIGN, France |
| DE SILGUY, Yves Thibault Christian Marie RESIGNED | Director | 26 Apr 2001 | 23 May 2002 | | July 1948 | 134 Avenue De Malakoff, 75116 Paris, FOREIGN, France |
| DUVAL, Florent Thierry Antoine RESIGNED | Director | 01 Feb 2016 | 31 Oct 2021 | England | February 1976 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| ELLIOTT, Robert William, Lord Elliott Of Morpeth Dl RESIGNED | Director | | 22 Apr 1992 | | December 1920 | Lipwood Hall, Haydon Bridge, Hexham, Northumberland, NE47 6DY |
| FABRY, Alain Charles RESIGNED | Director | | 01 Dec 1992 | | February 1945 | Bell House 26 Graham Terrace, London, SW1W 8JH |
| FARRER, Arthur Mark RESIGNED | Director | | 11 Jul 1996 | | March 1941 | The Brick House, Finchingfield, Essex, CM7 |
| GOUGH, Celia Rosalind RESIGNED | Director | 07 Nov 2022 | 31 Oct 2025 | United Kingdom | January 1975 | 210, Pentonville Road, London, N1 9JY, England |
| GRAVESON, Gavin Howard RESIGNED | Director | 07 Nov 2022 | 02 Apr 2026 | England | August 1963 | 210, Pentonville Road, London, N1 9JY, England |
| GUIRKINGER, Bernard RESIGNED | Director | 25 Jul 2002 | 03 May 2007 | | April 1952 | 61 Avenue Emile Thiebaut, Le Vesinet, 78110, France |
| HARDING, Anthony John RESIGNED | Director | 26 Apr 2001 | 01 Nov 2001 | | April 1949 | The Byre Dilston Steading, Corbridge, Northumberland, NE45 5RF |
| HARGROVE, Charles RESIGNED | Director | | 11 Jul 1996 | | May 1922 | 8 Cite Martignac, 75007 Paris, FOREIGN, France |
| HOLLIDAY, Frederick George Thomas, Professor Sir RESIGNED | Director | 11 Jul 1996 | 25 Apr 2000 | | September 1935 | East Rosehill Cottage, Northwater Bridge, Laurencekirk, Grampian, AB30 1QD |
| LAMPRE, Charlotte RESIGNED | Director | 29 Jul 2022 | 07 Nov 2022 | France | June 1986 | Suez Sa Hq, 109 Boulevard Haussmann, Paris, France |
| LEWIS, Andrew Mackenzie, Sir RESIGNED | Director | | 08 Nov 1993 | | January 1918 | Colemans Farm, Finchingfield, Braintree, Essex, CM7 4PE |
| MORIN-POSTEL, Christine, Madame RESIGNED | Director | | 10 Nov 1993 | | October 1946 | Lyonnaise Des Eaux-Dumez, 72 Avenue De Lane Liberte 92000 Nanterre, FOREIGN, France |
| NEGRE, Martin Andre Bernard RESIGNED | Director | 25 Apr 2000 | 02 May 2001 | | September 1946 | Penthouse E, Montrose Court, Princes Gate, London, SW7 2QG |
| PAYEN, Gerard Paul Marie RESIGNED | Director | 25 Apr 2000 | 24 Apr 2002 | | November 1952 | 6 Rue Cuvier, St Germain En Laye 78100, France, FOREIGN |
| PETRY, Jacques Francis RESIGNED | Director | 24 Apr 2002 | 15 Mar 2004 | France | October 1954 | 11 Bis Rue D'Edimbourg, Paris, 75008, FOREIGN, France |
| PETRY, Jacques Francis RESIGNED | Director | | 25 Oct 1996 | France | October 1954 | 137 Rue Lamarck, Paris 75018, FOREIGN, France |
| POLWARTH, Henry Alexander Hepburn Scott, The Right Hon Lord RESIGNED | Director | | 22 Apr 1992 | | November 1916 | Harden, Hawick, Roxburghshire, TD9 7LP |
| SEXTON, Ian Anthony RESIGNED | Director | 01 Aug 2004 | 19 Feb 2007 | United Kingdom | May 1956 | 31 Dedmere Road, Marlow, Buckinghamshire, SL7 1PE |
| TAUPIN, Eric RESIGNED | Director | 20 Jul 2007 | 28 Jul 2022 | France | January 1961 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| THORN, Christopher Derrick RESIGNED | Director | 01 Feb 2020 | 07 Nov 2022 | England | April 1981 | Suez House, Grenfell Road, Maidenhead, Berkshire, SL6 1ES, England |
| THE LORD ELLIOTT OF MORPETH RESIGNED | Director | 14 Jul 1995 | 25 Apr 2000 | | | Lipwood Hall, Haydon Bridge, Hexham, Northumberland, NE47 6DY |