| BYSTROM, Caroline Louise ACTIVE | Secretary | 11 Aug 2026 | | | | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| FARMER, Andrew Robert ACTIVE | Director | 01 Aug 2015 | | England | December 1969 | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| HALSALL, John ACTIVE | Director | 23 Sep 2026 | | England | April 1966 | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| BUCK, Steven John RESIGNED | Secretary | 25 May 2001 | 27 May 2002 | | | 54 Dutchells Way, Eastbourne, East Sussex, BN22 0XF |
| BURNS, Noel James RESIGNED | Secretary | 27 May 2002 | 30 Sep 2008 | | | The Handsel 6 Northcliffe Close, Worcester Park, Surrey, KT4 7DS |
| HAMILTON, Elizabeth Ann RESIGNED | Secretary | 25 Oct 1995 | 16 Jun 1997 | | | Leithen Bank Leithen Road, Innerleithen, Peeblesshire, EH44 6HY |
| PEDRO, Melvin RESIGNED | Secretary | | 25 Oct 1995 | | | 4 Hillcrest Road, Loughton, Essex, IG10 4QQ |
| ROBERTSON, William James RESIGNED | Secretary | 16 Jun 1997 | 25 May 2001 | | | Woodside Cinder Hill, North Chailey, Lewes, East Sussex, BN8 4HP |
| TRUILLET, Nicolas Alexandre Desire RESIGNED | Secretary | 01 Oct 2008 | 10 Aug 2026 | | | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| AGOSTINI, Pascal RESIGNED | Director | 27 Sep 2001 | 01 Oct 2003 | | September 1949 | La Louque, Carraire Du Boulard, 13480, Cabries, France |
| ANTOLIK, Peter Szymon RESIGNED | Director | 26 Aug 2005 | 02 Oct 2006 | United Kingdom | December 1968 | 81 Regina Road, London, N4 3PT |
| ANTOLIK, Peter Szymon RESIGNED | Director | 01 Apr 2004 | 12 Aug 2004 | | December 1968 | 30b Haslemere Road, Crouch End, London, N8 9RB |
| BARNHOORN, Hendrikus Theodorus Johannes RESIGNED | Director | 01 Sep 1993 | 29 Mar 2000 | | October 1946 | 3 Walnut Tree Walk, Eastbourne, East Sussex, BN20 9BP |
| BARON, Sondra Jo RESIGNED | Director | 01 Oct 2003 | 01 Apr 2004 | | October 1965 | Garden Flat, 104 Clarendon Road, London, W11 2AR |
| BHATIA, Kanishk RESIGNED | Director | 15 Mar 2011 | 03 Jan 2013 | United Kingdom | December 1982 | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| BOX, Stephen John RESIGNED | Director | 26 Nov 2003 | 12 Aug 2004 | United Kingdom | September 1950 | Great Dewlands, Dewlands Hill, Rotherfield, East Sussex, TN6 3RU |
| BUTLER, Paul RESIGNED | Director | 20 Dec 2012 | 31 Jul 2020 | England | March 1961 | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| BUTLER, Paul RESIGNED | Director | 02 Oct 2006 | 16 Mar 2011 | England | March 1961 | 6 Masefield View, Orpington, Kent, BR6 8PH |
| CRAIG, James Stuart RESIGNED | Director | 01 Oct 2003 | 01 Dec 2005 | | August 1965 | C/O Macquarie Bank, Level 25 City Point, No.1 Ropemaker Street, London, EC2Y 9HD |
| DENERY, Philippe RESIGNED | Director | 28 Jun 2000 | 27 Sep 2001 | | September 1952 | 8 Square Desaix, Paris, 75015, FOREIGN, France |
| DEVLIN, Margaret Patricia RESIGNED | Director | 30 Apr 1999 | 26 May 2006 | | March 1962 | Stable Lodge, Boreham St., Hailsham, East Sussex, BN27 4SF |
| DYER, Peter, Dr RESIGNED | Director | 05 Feb 2004 | 12 Aug 2004 | Uk | November 1941 | 14 Crofton Avenue, Chiswick, London, W4 3EW |
| GABOREAU, Claude Jean RESIGNED | Director | 28 Mar 1996 | 31 Oct 1998 | | April 1946 | 17 Rue De Teheran, Paris, 75008, France |
| GABRIEL, Yves RESIGNED | Director | 01 Mar 1999 | 26 Sep 2002 | | March 1950 | 21 Bis Route De Choiseul, Talou Chevreuse 78460, France, FOREIGN |
| GOULDER, Patrick Renshaw RESIGNED | Director | 24 Jul 1997 | 31 Dec 2003 | | December 1934 | Yatesbury House, Farnham, Surrey, GU9 8UF |
| GRANGE, Pascal RESIGNED | Director | 27 Sep 2001 | 27 Feb 2003 | | February 1961 | 42 Boulevard Arago- 75013, Paris, FOREIGN, France |
| HAMILTON, Elizabeth Ann RESIGNED | Director | 28 Mar 1996 | 22 Jul 1997 | | March 1963 | Leithen Bank Leithen Road, Innerleithen, Peeblesshire, EH44 6HY |
| HINTON, David Edwin RESIGNED | Director | 24 Feb 2021 | 22 Jul 2026 | England | November 1967 | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| HOSKINS, Geoffrey Mark RESIGNED | Director | | 01 Oct 2003 | | August 1930 | North Barn, Micheldever, Hampshire, SO21 3DA |
| HUNTER, Andrew RESIGNED | Director | 01 Oct 2003 | 12 Aug 2004 | | June 1968 | 2 Holly Place, London, NW3 6QU |
| JENNINGS, John David RESIGNED | Director | | 31 Jul 1997 | | June 1925 | Hindleap Farm, Forest Row, East Sussex, RH18 5JH |
| KNIGHT, Angela Ann RESIGNED | Director | 27 Nov 1997 | 12 Aug 2004 | United Kingdom | October 1950 | Ronans Forest Road, Winkfield Row, Ascot, Berkshire, RG42 6LY |
| LE BOUC, Herve RESIGNED | Director | 26 Sep 2002 | 17 Dec 2003 | | January 1952 | 12 Rue Neuve Norte Damne, 78000 Versailles, France |
| LEBORGNE, Francis RESIGNED | Director | 27 Apr 2000 | 08 Dec 2000 | | March 1944 | 1 Avenue Eugene Freyssinet, St Quentin-En-Yvelines, 78061, France |
| LEROUX, Jean-Etienne RESIGNED | Director | 15 Mar 2011 | 21 Dec 2012 | Canada | July 1978 | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| MALAN, Paul Richard RESIGNED | Director | 01 Oct 2003 | 12 Dec 2003 | United Kingdom | September 1970 | Flat 1 17 Pembridge Crescent, London, W11 3DX |
| MARIEN, Philippe RESIGNED | Director | 27 Feb 2003 | 01 Oct 2003 | | June 1956 | 19 Route Des Gatines, 91370 Verrieres Le Buisson, France |
| MILLER, Jane Melanie RESIGNED | Director | 27 Nov 1997 | 28 Jun 2001 | | December 1958 | Atmyres Farm, The Street Nutbourne, Pulborough, West Sussex, RH20 2HE |
| MITCHELL, John Cameron RESIGNED | Director | 12 Jul 1995 | 24 Apr 1997 | | July 1938 | 10 York Road, Farnham, Surrey, GU9 8JZ |
| O'CATHAIN, Detta, Baroness RESIGNED | Director | 27 Nov 1997 | 12 Aug 2004 | | February 1938 | C129 Parliament View Apartments, 1 Albert Embankment, London, SE1 7XN |
| PACKHAM, Patrick Oliver RESIGNED | Director | | 31 Jul 1997 | | December 1927 | 7 Priorswood, Compton, Guildford, Surrey, GU3 1DS |
| PETERSCHMITT, Louis RESIGNED | Director | 24 Apr 1997 | 27 Sep 2001 | | December 1938 | 1 Rue Denis Abraham, Clamart, 92140, France |
| RANCON, Patrice Christian RESIGNED | Director | | 28 Jun 2000 | | May 1946 | 146 Rue De Courcelles, Paris, 75017, France |
| ROSATI, Valeria, Ms RESIGNED | Director | 15 Mar 2011 | 21 Dec 2012 | United Kingdom | February 1975 | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| SCHERRER, Denis Francois Andre RESIGNED | Director | 25 Jan 2001 | 01 Oct 2003 | | February 1948 | 22 Rue Du Mont-Valerien, Saint-Cloud, 92210, France |
| SENNEPIN, Jacques Pierre RESIGNED | Director | | 24 Mar 1999 | | October 1936 | 34 Rue De Docteur Blanche, Paris 75016, France |
| SNAITH, Elisabeth Anne RESIGNED | Director | 26 Jul 2001 | 01 Oct 2003 | United Kingdom | February 1960 | Tender Oaks, The Plantation Curdridge, Southampton, Hampshire, SO32 2DT |
| STENT, John Julian RESIGNED | Director | 30 Oct 2003 | 01 Dec 2005 | England | March 1955 | Melrose House 33 Ganghill, Guildford, Surrey, GU1 1XF |
| STIMPSON, Joanne Elizabeth RESIGNED | Director | 20 Dec 2012 | 31 Jul 2015 | England | August 1962 | South East Water Limited, Rocfort Road, Snodland, Kent, ME6 5AH |
| STIMPSON, Joanne Elizabeth RESIGNED | Director | 02 Oct 2006 | 16 Mar 2011 | England | August 1962 | The Garden House, 18 Heathway Blackheath, London, SE3 7AN |
| TALBOT, Jean-Francois RESIGNED | Director | | 01 Oct 2003 | | August 1947 | 22, Rue Jean Giraudoux, Paris, 75116, France |
| TENNANT, Raymond John RESIGNED | Director | 12 Jul 1995 | 30 Apr 1999 | England | October 1944 | 17 The Combe, Eastbourne, East Sussex, BN20 9DB |