| JONES, Michael ACTIVE | Secretary | 19 Jan 2000 | | | | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| BEACOCK, Sarah Lesley ACTIVE | Director | 10 Sep 2023 | | England | June 1962 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| CLOUGH, Ermerlinda Katharine Mary ACTIVE | Director | 16 Mar 2026 | | England | July 1983 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| GREENAWAY, Jacqueline Margaret ACTIVE | Director | 06 Jul 2026 | | England | December 1961 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| JONES, Michael ACTIVE | Director | 25 Oct 2019 | | England | October 1947 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| LEWIS, Andrew Michael ACTIVE | Director | 16 Mar 2026 | | England | December 1989 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| RIDLEY, Kevin Miles ACTIVE | Director | 06 Aug 2019 | | England | February 1958 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| SEBA, Abdullah ACTIVE | Director | 18 Feb 2025 | | United Kingdom | October 1999 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| SPRINGHALL, Nigel Ronald ACTIVE | Director | 16 Mar 2026 | | England | May 1953 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| STRIDE, Andrew Clifford ACTIVE | Director | 06 Jul 2026 | | England | December 1961 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| DUNMOW, Michael Richard RESIGNED | Secretary | | 16 Nov 1999 | | | 8 Yorkland Avenue, Welling, Kent, DA16 2LF |
| WILSON, Judith Mary RESIGNED | Secretary | 16 Nov 1999 | 18 Jan 2000 | | | 63 The Beeches Acacia Way, The Hollies, Sidcup, Kent, DA15 8WW |
| AUSTIN, John Eric RESIGNED | Director | 01 Jan 2009 | 12 Dec 2017 | England | August 1944 | 50, Berriedale Avenue, Hove, East Sussex, BN3 4JJ, England |
| BARDRICK, Ernest Richard RESIGNED | Director | 08 Mar 2022 | 07 Jun 2023 | England | February 1960 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| BAZALGETTE, Peter Lytton, Sir RESIGNED | Director | 16 Nov 1999 | 01 Sep 2008 | United Kingdom | May 1953 | 29 Kensington Park Gardens, London, W11 2US |
| BESWICK, Victoria Clare RESIGNED | Director | 22 Jan 2019 | 13 Sep 2019 | England | March 1975 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| BOAKES, Alan John RESIGNED | Director | 18 Jul 2004 | 13 Sep 2009 | England | February 1953 | 223 Bexley Road, Erith, Kent, DA8 3EU |
| BORDLEY, John Francis RESIGNED | Director | | 18 Jun 1999 | | March 1941 | 100 Belmont Road, Northumberland Heath, Erith, Kent, DA8 1LD |
| CASTLE, Kate Anne Thyme RESIGNED | Director | 01 Apr 2021 | 09 Aug 2021 | England | April 1980 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| CATTERALL, Pippa Poppy, Professor RESIGNED | Director | 23 Apr 2013 | 22 Jan 2019 | England | December 1961 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| CHIN, Colin Wai Kin RESIGNED | Director | 25 Apr 2023 | 30 Sep 2025 | England | August 1971 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| COLES, David RESIGNED | Director | 08 Sep 2013 | 30 Nov 2014 | England | December 1954 | Thames Water - Old Works, Belvedere Road, London, SE2 9AQ |
| CONNOLLY, Peter John RESIGNED | Director | 02 May 2013 | 08 Sep 2013 | England | October 1937 | Thames Water - Old Works, Belvedere Road, London, SE2 9AQ |
| DAWES, Malcolm RESIGNED | Director | 20 Sep 2015 | 14 Nov 2016 | England | May 1945 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| DUNMOW, Michael Richard RESIGNED | Director | | 03 Sep 2006 | | September 1931 | 8 Yorkland Avenue, Welling, Kent, DA16 2LF |
| FLEMING, Raymond George RESIGNED | Director | 26 Jul 2022 | 30 Aug 2025 | England | April 1946 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| FOULDS, James Tristram RESIGNED | Director | 06 Aug 2019 | 04 Sep 2020 | England | October 1959 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| GERMANUS-KUNDA, Frederick Kennedy RESIGNED | Director | 24 Aug 2020 | 06 Jul 2026 | England | July 1967 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| GRIFFITHS, Peter John RESIGNED | Director | 02 May 2013 | 08 Sep 2013 | England | December 1940 | Thames Water - Old Works, Belvedere Road, London, SE2 9AQ |
| HAMPSON, Ian Geoffrey RESIGNED | Director | | 18 Jun 1999 | | May 1927 | 15 Park Road, Twickenham, Middlesex, TW1 2QD |
| HERMAN, John William RESIGNED | Director | 14 Oct 2014 | 30 Nov 2015 | England | July 1948 | Thames Water - Old Works, Belvedere Road, London, SE2 9AQ |
| HOBBS, Trevor Edric RESIGNED | Director | 12 Dec 2017 | 25 Sep 2018 | England | March 1949 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| HODGES, Simon Jonathan RESIGNED | Director | 04 Sep 2011 | 31 Jan 2013 | United Kingdom | January 1967 | Thames Water - Old Works, Belvedere Road, London, SE2 9AQ |
| HOWARD JONES, Robert Francis RESIGNED | Director | 16 Nov 1999 | 31 Mar 2003 | United Kingdom | July 1952 | Regents Well House, Chapman Lane, Bourne End, Buckinghamshire, SL8 5PA |
| HUDSON, Polly Anne Vaughan RESIGNED | Director | 01 Aug 2003 | 24 Jun 2006 | | June 1964 | 22 Chetwynd Road, London, NW5 1BY |
| HUGHES, David John RESIGNED | Director | 25 Oct 2019 | 18 Aug 2020 | England | October 1953 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| HUNT, Martin Robert RESIGNED | Director | 30 Mar 2020 | 11 Aug 2020 | England | January 1958 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| JAMES, Steven Elliot RESIGNED | Director | 24 Sep 2024 | 13 Jan 2026 | England | February 1950 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| JEPSON, Emma Fay RESIGNED | Director | 10 Sep 2023 | 08 Apr 2026 | England | May 1974 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| JOHNSTONE, Colin Anthony RESIGNED | Director | 18 Jun 2013 | 20 Apr 2017 | England | April 1947 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| JONES, Michael RESIGNED | Director | 16 Aug 1999 | 08 Sep 2013 | England | October 1947 | 230, Plumstead Common Road, London, SE18 2RS |
| JONES, Robert Edward Cavan RESIGNED | Director | 09 Sep 2007 | 31 Jan 2013 | United Kingdom | June 1937 | 5 Beaumont Road, Petts Wood, Orpington, Kent, BR5 1JL |
| KEASLEY, Peter John RESIGNED | Director | 16 Sep 2012 | 01 May 2013 | United Kingdom | February 1944 | Thames Water - Old Works, Belvedere Road, London, SE2 9AQ |
| MACKLEN, Kirsty Jayne RESIGNED | Director | 01 Nov 2015 | 08 Sep 2020 | England | February 1987 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| NEHER, Albert RESIGNED | Director | 14 Oct 2014 | 28 Oct 2024 | England | June 1952 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| NELSON, Peter James RESIGNED | Director | 16 Sep 2012 | 15 Oct 2024 | England | August 1943 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| NICOLS, Robert John RESIGNED | Director | 13 Sep 2009 | 16 Sep 2012 | United Kingdom | June 1946 | 80, The Ridgeway, Watford, Hertfordshire, WD17 4TL, United Kingdom |
| PAGE, Jennifer Anne RESIGNED | Director | 01 Sep 2000 | 01 Jan 2011 | England | November 1944 | 38 Methley Street, London, SE11 4AJ |
| PARKINSON, Robin James RESIGNED | Director | 11 Jul 2017 | 08 Sep 2020 | England | July 1942 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| RIDLEY, John Robertson RESIGNED | Director | 03 Sep 2006 | 08 Feb 2010 | | March 1926 | 61 Parkhurst Road, Bexley, Kent, DA5 1BA |
| RIDLEY, John Robertson RESIGNED | Director | | 15 Jun 2003 | | March 1926 | 61 Parkhurst Road, Bexley, Kent, DA5 1BA |
| ROBERTS, Janet Susan RESIGNED | Director | 10 Mar 2015 | 20 Sep 2015 | England | January 1962 | Thames Water - Old Works, Belvedere Road, London, SE2 9AQ |
| ROOKS, Jonathan Scot RESIGNED | Director | 01 Sep 2008 | 29 Jan 2013 | United Kingdom | January 1960 | 15 Birkbeck Road, Sidcup, Kent, DA14 4DB |
| SKILTON, Peter John RESIGNED | Director | 16 Aug 1999 | 09 Sep 2007 | England | March 1933 | 35 Selkirk Drive, Erith, Kent, DA8 3QR |
| TAYLOR, Roger Neil RESIGNED | Director | 08 Sep 2013 | 30 Nov 2014 | England | December 1946 | Thames Water - Old Works, Belvedere Road, London, SE2 9AQ |
| THOMPSON, Alan George Henry RESIGNED | Director | 04 Sep 2011 | 31 May 2016 | England | July 1947 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| TURNER, Richard David RESIGNED | Director | 11 Jul 2017 | 24 Sep 2018 | England | October 1951 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| WALTERS, Peter Francis RESIGNED | Director | 06 Aug 2019 | 25 Aug 2020 | England | November 1949 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| WARNER, James Gregory RESIGNED | Director | 10 Feb 2015 | 24 Sep 2024 | England | December 1936 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| WILKEN, Margaret Elizabeth RESIGNED | Director | 16 Aug 1999 | 07 Sep 2008 | England | April 1954 | 35 Callander Road, Catford, London, SE6 2QA |
| WILLIAMS, Alison Marie RESIGNED | Director | 14 Oct 2014 | 25 Jul 2022 | England | December 1962 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| WILSON, Martin Richard RESIGNED | Director | 13 Sep 2009 | 16 Sep 2012 | United Kingdom | June 1950 | 58, Palmeira Road, Bexleyheath, Kent, DA7 4UX, United Kingdom |
| WILSON, Philip Maynard RESIGNED | Director | 16 Aug 1999 | 04 Sep 2011 | United Kingdom | November 1932 | 33 Marne Avenue, Welling, Kent, DA16 2EY |
| WINDERS, Pamela RESIGNED | Director | 25 Sep 2016 | 12 Apr 2019 | England | April 1952 | Thames Water - Old Works, Bazalgette Way, London, SE2 9AQ, England |
| WOODHEAD, Christopher Anthony RESIGNED | Director | 01 Apr 2001 | 30 Apr 2002 | Wales | October 1946 | Hendre Gwenllian, Llanfrothen, Penrhyndeudraeth, Gwynedd, LL48 6DJ |
| YEO, Michael John RESIGNED | Director | 02 May 2013 | 23 May 2013 | England | December 1943 | Thames Water - Old Works, Belvedere Road, London, SE2 9AQ |