| PUGSLEY, Simon Anthony Follett ACTIVE | Secretary | 01 Apr 2025 | | | | Company Secretary, Affinity Water Limited, The Hub, Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ, United Kingdom |
| BROWN, Michael William Tuke ACTIVE | Director | 14 Oct 2024 | | England | April 1964 | Affinity Water Ltd, Tamblin Way, Hatfield, AL10 9EZ, England |
| GARTH, Mark William ACTIVE | Director | 15 Jun 2026 | | United Kingdom | October 1978 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| MALTON, Shelley Joanne ACTIVE | Director | 01 Dec 2023 | | England | January 1974 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| NEWSOME, Christopher David ACTIVE | Director | 24 Jan 2019 | | England | December 1957 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| OSBORNE, Michael Peter Francis ACTIVE | Director | 01 Apr 2022 | | United Kingdom | October 1980 | The Hub, Tamblin Way, Hatfield, AL10 9EZ, United Kingdom |
| READ, Justin Richard ACTIVE | Director | 14 Jul 2020 | | England | May 1961 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| STEPHENS, Adam Peter ACTIVE | Director | 01 Jan 2025 | | United Kingdom | April 1983 | The Hub, Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ, United Kingdom |
| TATARU, Roxana ACTIVE | Director | 01 Jul 2021 | | United Kingdom | June 1989 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| WADDINGTON, Adam George ACTIVE | Director | 12 May 2023 | | United Kingdom | December 1974 | The Hub, Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ, United Kingdom |
| CALDWELL, Colin RESIGNED | Secretary | 07 Nov 2019 | 31 Mar 2020 | | | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| KAUSHAL, Sunita RESIGNED | Secretary | 01 Apr 2020 | 03 Apr 2023 | | | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| MAKONI, Patrick RESIGNED | Secretary | 03 Apr 2023 | 31 Mar 2025 | | | The Hub, Tamblin Way, Hatfield, AL10 9EZ, United Kingdom |
| MAYDON, Gary RESIGNED | Secretary | | 01 May 1997 | | | 23 Rye Street, Bishops Stortford, Hertfordshire, CM23 2HA |
| MONOD, Timothy John William RESIGNED | Secretary | 06 Dec 2006 | 06 Nov 2019 | | | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| TAYLOR, Keith William RESIGNED | Secretary | 01 May 1997 | 06 Dec 2006 | | | 127 Broadwood Avenue, Ruislip, Middlesex, HA4 7XU |
| ALEXANDER, David William RESIGNED | Director | 01 Apr 2000 | 02 Dec 2010 | United Kingdom | September 1946 | 54 Velsheda Court, Hythe Marina Village, Hythe, Hampshire, SO45 6DW |
| ALEXANDER, David William RESIGNED | Director | | 27 May 1994 | | September 1946 | 12 Geffers Ride, Ascot, Berkshire, SL5 7JY |
| ASHCROFT, Philip Gillison RESIGNED | Director | 02 Mar 1998 | 31 Mar 2000 | Usa | August 1949 | 89e Redington Road, Hampstead, London, NW3 7RR |
| BANON, Jean Claude RESIGNED | Director | 28 May 1994 | 31 Dec 2010 | Belgium | May 1948 | 5 Avenue Van Bever, Uccle, 1180 Brussels, FOREIGN, Belguim |
| BATES, Duncan John Lucas RESIGNED | Director | 20 Sep 2012 | 31 Jul 2017 | England | August 1958 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| BIENFAIT, Richard Antoine RESIGNED | Director | 01 Jul 2006 | 31 Dec 2014 | United Kingdom | September 1967 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| BISHOP, Ann RESIGNED | Director | 25 Mar 2020 | 18 Jul 2022 | England | January 1958 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| BISHOP, Jeffrey Anthony RESIGNED | Director | 01 Jun 2002 | 08 Jun 2010 | | February 1957 | 9 Teversham Way, Eaton Ford, St Neots, PE19 7QT |
| BOLT, Christopher Wesley RESIGNED | Director | 26 Feb 2015 | 03 Sep 2019 | England | October 1953 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| BORRIE, Gordon, Lord RESIGNED | Director | 28 May 1994 | 25 Sep 2003 | | March 1931 | Manor Farm, Abbots Morton, Worcestershire, WR7 4NA |
| BOTIJA, Antonio RESIGNED | Director | 25 Jul 2012 | 25 Jul 2014 | England | October 1976 | Governors House, Laurence Pountney Hill, London, EC4R 0HH, United Kingdom |
| BRADBURY, Kenton Edward RESIGNED | Director | 25 Jul 2012 | 31 Mar 2015 | England | January 1970 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| BRENKLEY, Ian John RESIGNED | Director | 13 Dec 2005 | 15 Nov 2007 | | July 1957 | 89 Woodward Close, Winnersh, Wokingham, Berkshire, RG41 5UU |
| BRET, Olivier Marie RESIGNED | Director | 31 Dec 2013 | 25 Jul 2014 | England | September 1962 | 210, Pentonville Road, London, N1 9JY, England |
| BRET, Olivier Marie RESIGNED | Director | 25 Jan 2012 | 27 Jun 2012 | England | September 1962 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| BRIMBLE, Richard John RESIGNED | Director | 02 Dec 2008 | 07 Jul 2010 | England | November 1959 | 3 Boulderclough Chapel, Sowerby Lane, Luddendenfoot, HX2 6JW |
| BUSCOMBE, Peta Jane, Baroness RESIGNED | Director | 20 Feb 2006 | 30 Sep 2015 | England | March 1954 | The Ferry House Ferry Lane, Goring On Thames, Reading, Berkshire, RG8 9DX |
| CAILLE, Daniel RESIGNED | Director | 28 Sep 1998 | 22 Nov 1999 | | April 1951 | 36 Rue De La Ronce, 92410 Ville D Avray, France |
| COCKER, Anthony David RESIGNED | Director | 15 Jan 2018 | 29 Jan 2021 | United Kingdom | April 1959 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| COCKS, Simon RESIGNED | Director | 01 Jun 2015 | 01 Oct 2018 | United Kingdom | November 1965 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| COX, Andrew RESIGNED | Director | 15 Nov 2023 | 10 Jun 2024 | United Kingdom | April 1967 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| CRAIG, Gareth Irons RESIGNED | Director | 19 May 2017 | 25 Jul 2018 | England | August 1957 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| DARBY, Peter William RESIGNED | Director | | 31 May 2007 | | May 1949 | Red Hay Coolinge Lane, Folkestone, Kent, CT20 3QU |
| DARDI, Marissa Ann RESIGNED | Director | 15 Feb 2023 | 12 May 2023 | United Kingdom | December 1980 | The Hub, Tamblin Way, Hatfield, AL10 9EZ, United Kingdom |
| DARLEY, Francois RESIGNED | Director | 25 Sep 2003 | 31 Mar 2006 | | June 1950 | 42 Porchester Terrace, London, W2 3TP |
| DELLACHA, Maria Georgina RESIGNED | Director | 13 Sep 2016 | 19 May 2017 | England | January 1975 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| DELLACHA, Maria Georgina RESIGNED | Director | 25 Jul 2014 | 30 Jul 2015 | England | January 1975 | Governor’S House, Laurence Pountney Hill, London, EC4R 0HH, United Kingdom |
| DENCH, Andrew James RESIGNED | Director | 25 Jul 2012 | 31 Dec 2013 | England | August 1969 | Fifth Floor, 90 York Way, London, N1 9AG, United Kingdom |
| DEVOS, Frederic RESIGNED | Director | 13 Dec 2007 | 25 Jan 2012 | United Kingdom | January 1964 | 3 Rue De L'Eglise, Marly Le Roi, 78160, 78160, France |
| DIDCOCK, Trevor John RESIGNED | Director | 30 Nov 2015 | 28 Feb 2025 | England | May 1963 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| DONZELLI, Alberto Angelo RESIGNED | Director | 25 Jul 2012 | 27 Jun 2013 | United Kingdom | May 1975 | 20, Bank Street, London, E14 4AD, United Kingdom |
| GRUNBERG, Olivier RESIGNED | Director | 07 Jul 2008 | 27 Jun 2012 | France | August 1958 | 153 Rue De L'Universite, Paris, 75007, France |
| GUITARD, Phillippe Roger Louis RESIGNED | Director | 07 Jul 2008 | 27 Jun 2012 | Czech Republic | June 1960 | Alzbetin Divor, 556, Milosavov, 900 48 |
| HASELDINE, John Midgley RESIGNED | Director | 28 May 1994 | 16 Sep 1994 | | June 1923 | 2 Chiswick Mall, London, W4 2QH |
| HASLETT, James Keith RESIGNED | Director | 03 Jan 2023 | 31 Mar 2026 | United Kingdom | May 1979 | The Hub, Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ, United Kingdom |
| HERBERT, Jeffrey William RESIGNED | Director | 27 Jul 2012 | 30 Sep 2015 | England | July 1942 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| HEWITT, David Clayton RESIGNED | Director | 20 Mar 2002 | 30 Jun 2006 | England | May 1948 | 1 The Chase, Farnborough, Hampshire, GU14 8BY |
| HIGSON, Paula Anne RESIGNED | Director | 26 Apr 1999 | 12 Sep 2003 | England | January 1957 | 22 Tower Road, Twickenham, Middlesex, TW1 4PE |
| HOOPER, Susan Mary RESIGNED | Director | 30 Nov 2015 | 31 Mar 2022 | United Kingdom | February 1960 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| HORSLEY, Mark John RESIGNED | Director | 19 Dec 2019 | 18 Jul 2022 | United Kingdom | May 1959 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| JEFFERY, Jack RESIGNED | Director | 01 Feb 2000 | 27 Sep 2001 | | March 1930 | High Pines 19 The Avenue, Chobham, Woking, Surrey, GU24 8RU |
| KARNIK, Deven Arvind RESIGNED | Director | 25 Jul 2012 | 08 Mar 2013 | Hong Kong | August 1967 | Level 46, International Commerce Centre, 1 Austin Road West, Kowloon, Hong Kong |
| KORPANCOVA, Jaroslava RESIGNED | Director | 19 May 2017 | 01 Jul 2021 | United Kingdom | August 1974 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| KORPANEC, Jaroslava RESIGNED | Director | 04 Jan 2022 | 01 Aug 2022 | United Kingdom | August 1974 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| LEDGER, Stuart Neil RESIGNED | Director | 09 Oct 2017 | 16 Dec 2022 | England | January 1976 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| LIEF, Mathieu Olivier Louis RESIGNED | Director | 25 Jul 2012 | 22 Apr 2013 | England | November 1975 | Governors House, Laurence Pountney Hill, London, EC4R 0HH, United Kingdom |
| MCGOWN, James Frederick RESIGNED | Director | | 31 Mar 2000 | United Kingdom | October 1943 | 42 Topstreet Way, Harpenden, Hertfordshire, AL5 5TT |
| MOHR, Gerard RESIGNED | Director | 15 Dec 1999 | 26 Jun 2003 | | September 1955 | Bt Rue Due Regard, 92380 Garches, France, FOREIGN |
| NELSON, Stephen Keith James RESIGNED | Director | 31 Mar 2015 | 19 May 2017 | United Kingdom | January 1963 | Governor's House, Laurence Pountney Hill, London, EC4R 0HH, England |
| NOLAN, Philip Michael Gerard, Dr. RESIGNED | Director | 01 Apr 2013 | 30 Jan 2018 | Ireland | October 1953 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| O'DONNELL BOURKE, Patrick Francis John RESIGNED | Director | 24 Jul 2013 | 29 Sep 2020 | England | March 1957 | 1, Kingsway, London, WC2B 6AN, England |
| PAGE, Arthur John, Sir RESIGNED | Director | 10 Jun 1994 | 31 Dec 2000 | | September 1919 | Hitcham Lodge, Hitcham Lane Taplow, Maidenhead, Berkshire, SL6 0HG |
| PARK, David RESIGNED | Director | | 27 May 1994 | | February 1956 | 79 Holywell Hill, St Albans, Hertfordshire, AL1 1HF |
| PATERSON, Nigel John RESIGNED | Director | 25 Jul 2014 | 19 May 2017 | England | October 1957 | 8th Floor, 210, Pentonville Road, London, N1 9JY, England |
| RHODES, Roland Nigel RESIGNED | Director | | 27 May 1994 | | June 1952 | 3 Malting Mews, Hertford, Hertfordshire, SG13 8ES |
| ROBERTS, Miles William RESIGNED | Director | 01 Apr 1998 | 03 Jun 2000 | | February 1964 | 2 Grafton Place, Standon, Hertfordshire, SG11 1LT |
| ROGER LACAN, Cyril RESIGNED | Director | 25 Sep 2003 | 19 May 2008 | | April 1964 | 17 Rue Du Cherche Midi, Paris, 75006, FOREIGN, France |
| ROPER, Anthony Charles RESIGNED | Director | 25 Jul 2018 | 31 Mar 2022 | United Kingdom | December 1960 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| ROSHIER, Angela Louise RESIGNED | Director | 19 May 2017 | 15 Feb 2023 | United Kingdom | January 1975 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| ROSS COLLINS, Michael Stewart RESIGNED | Director | 28 May 1994 | 31 Dec 2008 | United Kingdom | June 1938 | Wynches, Much Hadham, Hertfordshire, SG10 6BA |
| ROUGHEAD, Martin RESIGNED | Director | 17 Apr 2023 | 04 Oct 2024 | United Kingdom | April 1987 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| SAIDJI, Yacine RESIGNED | Director | 25 Jul 2012 | 19 May 2017 | England | March 1976 | Governors House, Laurence Pountney Hill, London, EC4R 0HH, United Kingdom |
| SCHUMACHER, Bernd RESIGNED | Director | 30 Jul 2015 | 19 Aug 2016 | England | July 1976 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| SCHUMACHER, Bernd RESIGNED | Director | 25 Jul 2012 | 27 Jun 2013 | England | July 1976 | Governors House, Laurence Pountney Hill, London, EC4R 0HH, United Kingdom |
| SMITH, Andrew Peter RESIGNED | Director | 01 May 2007 | 09 Mar 2010 | England | March 1966 | 101 Pixmore Way, Letchworth Garden City, Herts, SG6 3TR |
| SPILLIAERT, Patrick RESIGNED | Director | 01 Nov 2003 | 01 Apr 2008 | | December 1965 | 22 Av Emile Deschanel, Paris, 75007, FOREIGN, Paris |
| SUMMERTON, Neil RESIGNED | Director | 01 Oct 2000 | 20 Aug 2012 | England | April 1942 | Abbey Court, Cove, Tiverton, Devon, EX16 7RT |
| TARDIEU, Jean Pierre RESIGNED | Director | 28 May 1994 | 11 Dec 1996 | | December 1941 | 24 Avenue D'Eylau, 75116 Paris, FOREIGN, France |
| THOMAS, John Alan, Sir RESIGNED | Director | 26 Sep 2000 | 31 Jul 2009 | United Kingdom | January 1943 | Highwood Park Nan Clarks Lane, London, NW7 4HH |
| TYLER, Ian Paul RESIGNED | Director | 11 Jan 2021 | 17 Feb 2025 | England | July 1960 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| WALSH, Pauline Mary RESIGNED | Director | 01 May 2018 | 17 Sep 2021 | England | June 1967 | Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ |
| WILMOTT, James Michael RESIGNED | Director | 25 Jul 2012 | 19 May 2017 | Usa | March 1964 | 20, Bank Street, London, E14 4AD, United Kingdom |
| WOOLF, Fiona RESIGNED | Director | 20 Feb 2006 | 31 Dec 2013 | United Kingdom | May 1948 | Wynsgate, Portsmouth Road, Esher, Surrey, KT10 9JA |