| ATKINSON, Michelle Julie ACTIVE | Director | 05 May 2026 | | England | January 1980 | First Floor, 3 More London Riverside, London, SE1 2RE, England |
| CARTMELL, Elise ACTIVE | Director | 23 Jan 2019 | | Scotland | October 1970 | Scottish Water, 55 Buckstone Terrace, Edinburgh, EH10 6XH, Scotland |
| DAVIES, Emma Elizabeth ACTIVE | Director | 05 Feb 2025 | | England | June 1982 | Affinity Water Limited, Tamblin Way, Hatfield, AL10 9EZ, England |
| HEIGHINGTON, Richard Ellis ACTIVE | Director | 01 Apr 2025 | | England | August 1980 | Western House, Western Way, Bradford, BD6 2SZ, England |
| HIRANI, Nisarg Jagdishchandra ACTIVE | Director | 05 May 2026 | | Scotland | October 1975 | First Floor, 3 More London Riverside, London, SE1 2RE, England |
| MELLOTT-BATTY, Thomas Grant ACTIVE | Director | 24 Jan 2025 | | England | November 1978 | United Utilities Plc, Haweswater House, Lingley Mere Business Park, Great Sankey, WA5 3LP, England |
| PRICE, Robin Thomas ACTIVE | Director | 05 Feb 2025 | | England | August 1971 | Anglian Water Services, Lancaster House, Lancaster Way, Huntingdon, PE29 6XU, England |
| ROSE, Michael Jonathan ACTIVE | Director | 17 Feb 2025 | | England | September 1981 | 3, More London Place, London, SE1 2RE, England |
| TAYLOR, Colin Robert ACTIVE | Director | 18 Aug 2022 | | England | June 1961 | Portsmouth Water, PO BOX 8, West Street, Havant, PO9 1LG, England |
| WARNEFORD, Richard ACTIVE | Director | 17 Dec 2012 | | United Kingdom | June 1969 | Northumbria House, Abbey Road, Pity Me, DH1 5FJ, England |
| WHEELDON, Matthew James ACTIVE | Director | 28 Sep 2020 | | England | July 1971 | Wessex Water Services Ltd, Claverton Down Road, Claverton Down, Bath, BA2 7WW, England |
| FARRIMOND, Michael Stuart, Dr RESIGNED | Secretary | 03 Jan 2007 | 05 Apr 2011 | | | Wellington House, Grosvenor Cresent, Burbage, Leicestershire, LE10 2BQ |
| ZANIBONI, Averil Lenora RESIGNED | Secretary | 12 Oct 1993 | 03 Jan 2007 | | | 74 Eccleston Square, London, SW1V 1PJ |
| AITKENHEAD, Geoffrey RESIGNED | Director | 31 Mar 2008 | 20 Aug 2012 | Scotland | September 1954 | Braefield Cottage, Lauder, Berwickshire, TD2 6SF |
| ALEXANDER, David William RESIGNED | Director | 15 Dec 1997 | 30 Jun 2003 | | September 1946 | 20 Endeavour Way, Hythe Marina Village, Hythe, Hampshire, SO45 6DX |
| BADCOCK, David RESIGNED | Director | 12 Oct 1993 | 30 Oct 1995 | | October 1944 | Perry Green Cottage, Charlton, Malmesbury, Wiltshire, SN16 9DP |
| BANYARD, John Keith RESIGNED | Director | 03 Mar 1999 | 03 Sep 2004 | | December 1944 | Weavers Lodge Langley Road, Claverdon, Warwick, Warwickshire, CV35 8QA |
| BARNES, John Anthony RESIGNED | Director | 01 Apr 2000 | 11 Jul 2008 | | September 1954 | 11 Blackacres Close, Sandbach, Cheshire, CW11 1YE |
| BARNES, Simon Nicholas RESIGNED | Director | 01 Sep 2011 | 03 Dec 2019 | England | October 1973 | Western House, Western Way, Halifax Road, Bradford, West Yorkshire, BD6 2LZ, England |
| BATES, Arnold John, Doctor RESIGNED | Director | 19 Jan 2005 | 31 Mar 2008 | | May 1945 | 5 Charterhouse Close, Nailsea, Bristol, BS48 4PU |
| BATY, Robert John RESIGNED | Director | 07 Mar 1996 | 03 Mar 1999 | United Kingdom | June 1944 | Nanparah Lodge, Higher Broadoak Road, West Hill, Ottery St Mary, Devon, EX11 1XJ |
| BIRD, Stephen Charles, Dr RESIGNED | Director | 03 Mar 1999 | 18 Nov 2015 | England | May 1958 | Peninsula House, Rydon Lane, Exeter, Devon, EX2 7HR, England |
| BRIDGEWATER, Thomas RESIGNED | Director | 20 Jan 2023 | 30 Sep 2024 | England | December 1989 | Affinity Water, Tamblin Way, Hatfield, AL10 9EZ, England |
| BROOKER, Michael Peter, Dr RESIGNED | Director | 07 May 1997 | 03 Mar 1999 | | November 1947 | Charlbury 6 Plymouth Drive, Radyr, Cardiff, South Glamorgan, CF48 BL |
| BROW, Patrick John RESIGNED | Director | 17 Dec 2012 | 24 Jan 2020 | Northern Ireland | December 1969 | Ni Water, Westland House, Old Westland Road, Belfast, BT14 6TE, Northern Ireland |
| BROWNING, John Richard RESIGNED | Director | 12 Oct 1993 | 31 Mar 2000 | | January 1938 | Meadow Bank Water Street, East Harptree, Bristol, Avon, BS40 6AD |
| BURGIN, Robert RESIGNED | Director | 01 Apr 2000 | 12 Jul 2000 | Uk | May 1942 | 7 Diamond Close, Cambridge, Cambridgeshire, CB2 2AU |
| BUTLER, George Ronald RESIGNED | Director | 18 May 2005 | 18 Oct 2012 | England | February 1960 | 101 Bedford Road, Cranfield, Bedfordshire, MK43 0HA |
| BUTLER, Paul RESIGNED | Director | 01 Jul 2003 | 15 Oct 2012 | England | March 1961 | 6 Masefield View, Orpington, Kent, BR6 8PH |
| CASEY, John RESIGNED | Director | 22 Dec 2017 | 28 Feb 2023 | Ireland | June 1961 | Irish Water, Colville House, Talbot Street, Dublin 1, Ireland |
| CLARK, Piers Benedict, Dr RESIGNED | Director | 10 Sep 2010 | 21 Oct 2010 | United Kingdom | November 1969 | 61, Downs Wood, Epsom, Surrey, KT18 5UJ, England |
| COCKER, Victor RESIGNED | Director | 12 Oct 1993 | 10 Jul 1995 | | October 1940 | 133 Whitefields Road, Solihull, West Midlands, B91 3NY |
| COCKS, Simon RESIGNED | Director | 01 Dec 2011 | 26 Jan 2015 | England | November 1965 | PO BOX 5309, Severn Trent Centre, Coventry, CV3 9FH, England |
| COLLINGTON, Robert Millar RESIGNED | Director | 21 Oct 2010 | 01 Jun 2017 | England | November 1964 | Thames Water, Kemble Court, 550 South Oak Way, Reading, Berkshire, RG2 6AD, England |
| CONWAY, Tony RESIGNED | Director | 01 Sep 2011 | 31 Mar 2015 | England | April 1956 | Haweswater House, Lingley Mere Business Park, Great Sankey, Warrington, WA5 3LP, England |
| CURRAN, Derek Gary, Dr RESIGNED | Director | 23 Apr 2020 | 06 Aug 2026 | Northern Ireland | August 1965 | Ni Water, Westland House, 40 Old Westland Road, Belfast, BT14 6TE, Northern Ireland |
| CUTTING, William RESIGNED | Director | 12 Oct 1993 | 22 Jun 1995 | | March 1943 | Tiptoe, Sandgate Lane, Storrington, West Sussex, RH20 3HJ |
| DAVIES, Michelle Louise RESIGNED | Director | 22 Jul 2020 | 11 Mar 2022 | Wales | March 1980 | Bristol Water, Bridgwater Road, Bristol, BS13 7AT, England |
| DAVIES, Mike RESIGNED | Director | 01 Sep 2011 | 05 Sep 2013 | Wales | August 1963 | 114, Station Road, Ystradgynlais, Swansea, SA9 1PL, Wales |
| DELACOUR, Barrie Walter RESIGNED | Director | 01 Jul 2001 | 29 Nov 2004 | | August 1950 | 74 Sea Avenue, Rustington, West Sussex, BN16 2DL |
| DENNIS, Peter Julian Leslie, Dr RESIGNED | Director | 19 Nov 2003 | 14 Dec 2012 | England | May 1953 | 125 Old Bath Road, Cheltenham, Gloucestershire, GL53 7DH |
| DERWENT, Stuart RESIGNED | Director | 07 Mar 1996 | 07 May 1997 | England | February 1945 | 19 Withdean Crescent, Brighton, East Sussex, BN1 6WG |
| DUCKWORTH, Brian RESIGNED | Director | 20 Sep 1995 | 03 Mar 1999 | United Kingdom | April 1949 | 29 Rolleston Crescent, Watnall, Nottingham, NG16 1JU |
| DUNN-FLORES, Andrew John, Dr RESIGNED | Director | 30 Apr 2019 | 01 Nov 2021 | England | April 1966 | Clearwater Court, Vastern Road, Reading, RG1 8DB, England |
| ELLIOTT, David John RESIGNED | Director | 04 Jan 2019 | 30 Apr 2020 | England | May 1960 | Wessex Water, Claverton Down Road, Claverton Down, Bath, BA2 7WW, England |
| ELLIOTT, David John RESIGNED | Director | 20 Mar 2013 | 12 Oct 2018 | England | May 1960 | Wessex Water Operations Centre, Claverton Down Road, Claverton Down, Bath, BA2 7WW, England |
| FORD, Roger Roydon, Dr RESIGNED | Director | 03 Mar 1999 | 31 Jan 2000 | United Kingdom | August 1943 | 66 New Street, Altrincham, Cheshire, WA14 2QP |
| FRASER, William Hamilton RESIGNED | Director | 16 Mar 1994 | 07 Mar 1996 | | February 1938 | 4 Rivermount, Lower Hampton Road, Sunbury On Thames, Middlesex, TW16 5PH |
| GEORGE, Stephen RESIGNED | Director | 26 Oct 2017 | 30 Nov 2019 | England | December 1962 | South East Water Limited, Rocfort Road, Snodland, ME6 5AH, England |
| GREEN, John William RESIGNED | Director | 20 Sep 1995 | 01 Jan 1997 | United Kingdom | May 1943 | Ashlea Church Street, Wistow, Huntingdon, Cambridgeshire, PE28 2QE |
| HALL, Keith Barratt RESIGNED | Director | 01 Jan 1997 | 30 Sep 1997 | | May 1945 | 21 Queensberry Avenue, Hartlepool, Cleveland, TS26 9NW |
| HARDING, Anthony John RESIGNED | Director | 12 Oct 1993 | 03 Mar 1999 | | April 1949 | The Byre Dilston Steading, Corbridge, Northumberland, NE45 5RF |
| HARGREAVES, Jonathan Watson, Dr RESIGNED | Director | 12 Oct 1993 | 07 Mar 1996 | United Kingdom | March 1950 | 118 Newgate Street, Morpeth, Northumberland, NE61 1DA |
| HARRIES, Charles David RESIGNED | Director | 03 Mar 1999 | 30 Jun 2001 | | November 1945 | Truleigh, 32 Goring Road, Steyning, West Sussex, BN44 3GF |
| HARRINGTON, Anthony Christopher Robert, Professor RESIGNED | Director | 16 Oct 2013 | 06 Dec 2024 | United Kingdom | April 1962 | Dwr Cymru, Linea, Fortran Road, St. Mellons, Cardiff, CF3 0LT, Wales |
| HARRINGTON, Roger Ian RESIGNED | Director | 03 Nov 2000 | 05 Jan 2005 | England | May 1951 | 10 Groves Malthouse, Spring Road, Weymouth, Dorset, DT4 8XG |
| HARRISON, Joanne Elizabeth RESIGNED | Director | 11 Dec 2014 | 10 Dec 2018 | England | November 1973 | United Utilities, Lingley Mere Business Park, Lingley Green Avenue, Great Sankey, Cheshire, WA5 8PS, England |
| HARRISON, Robert RESIGNED | Director | 18 May 2005 | 21 Jul 2010 | England | May 1938 | 16 The Hawthorns, Reading, Berkshire, RG10 9TS |
| HOYLE, Alison Jane, Dr RESIGNED | Director | 14 Apr 2016 | 31 Mar 2023 | United Kingdom | February 1972 | Southern Water, Southern House, Yeoman Road, Worthing, West Sussex, BN13 3NX, England |
| HUGHES, Simon Nicholas RESIGNED | Director | 26 Oct 2017 | 18 Jan 2018 | England | December 1966 | Thames Water, Clearwater Court, Vastern Road, Reading, RG1 8DB, England |
| JANS, Suvra RESIGNED | Director | 05 May 2022 | 16 Apr 2026 | England | May 1979 | Thames Water Utilities Limited, Clearwater Court, Vastern Road, Reading, RG1 8DB, England |
| JENSEN, Hans RESIGNED | Director | 01 Sep 2011 | 07 Sep 2018 | England | November 1960 | Third Floor, 36 Broadway, London, SW1H 0BH, England |
| JOHNSTONE, James Mckenzie Carrie RESIGNED | Director | 02 Feb 1994 | 03 Mar 1999 | | July 1938 | 32 Croft Road, Inverness, IV3 6RS |
| JONES, Andrew Ceri RESIGNED | Director | 03 Mar 1999 | 17 Oct 2003 | England | September 1965 | Westfield North Road, Hare Law, Stanley, Durham, DH9 8DA |
| KANE, Martin James RESIGNED | Director | 01 Jun 2007 | 01 Dec 2011 | United Kingdom | December 1952 | 241 Warwick Road, Kenilworth, Warwickshire, CV8 1FB |
| KAYE, Steven RESIGNED | Director | 10 Sep 2018 | 16 Nov 2024 | England | September 1959 | First Floor, 3 More London Riverside, London, SE1 2RE, England |
| KENNEDY, Adrian Douglas RESIGNED | Director | 19 Jan 2005 | 01 Sep 2011 | England | June 1964 | 59 Barden Drive, Eldwick, Bingley, West Yorkshire, BD16 3PH |
| KERR, Paul RESIGNED | Director | 02 Feb 2022 | 14 Mar 2025 | United Kingdom | December 1973 | Ses Water, London Road, Redhill, RH1 1LJ, England |
| LAYFIELD, John RESIGNED | Director | 03 Mar 1999 | 31 Mar 2000 | | November 1943 | 24 River View, Boston Spa, Wetherby, West Yorkshire, LS23 6BA |
| MARTIN, Stephen RESIGNED | Director | 20 Mar 2013 | 13 Oct 2015 | England | March 1969 | Affinity Water, Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ, England |
| MCFADZEAN, Charles Jarvis RESIGNED | Director | 03 Mar 1999 | 03 Nov 2000 | | October 1950 | 21 Brierie Gardens, Crosslee, Johnstone, Renfrewshire, PA6 7BZ |
| MCMAHON, Tim RESIGNED | Director | 04 Oct 2023 | 19 Mar 2026 | England | December 1983 | Southern Water, Southern House, Yeoman Road, Worthing, BN13 3NX, England |
| MELLOTT-BATTY, Thomas Grant RESIGNED | Director | 20 Jan 2023 | 15 Jan 2025 | England | November 1978 | United Utilities Plc, Haweswater House, Lingley Mere Business Park, Great Sankey, WA5 3LP, England |
| MESSHAM, Grenville Christopher RESIGNED | Director | 19 Jan 2005 | 31 May 2007 | England | August 1951 | Pen-Y-Bryn, Warwick Road, Leek Wootton, Warwick, CV35 7QR |
| NEWSOME, Christopher David RESIGNED | Director | 01 Apr 2000 | 23 Jan 2019 | England | December 1957 | Lancaster House, Ermine Business Park, Huntingdon, PE29 6XU, England |
| O'REILLY, Caroline Ann RESIGNED | Director | 04 Oct 2023 | 14 Aug 2026 | Ireland | June 1976 | Uisce Éireann, Colvill House, 24-26 Talbot Street, Dublin, Do1 Np85, Ireland |
| ORTON, Helen Mary Grace RESIGNED | Director | 18 Jan 2018 | 01 Sep 2021 | England | December 1969 | Portsmouth Water Limited, PO BOX 8, West Street, Havant, PO9 1LG, England |
| OWENS, Katherine Ellen RESIGNED | Director | 23 Jan 2019 | 01 Nov 2022 | England | March 1985 | United Utilities, Haweswater House, Lingley Mere Business Park, Great Sankey, WA5 3LP, England |
| PARSONS, Simon Anthony, Professor RESIGNED | Director | 17 Dec 2012 | 06 Feb 2019 | Scotland | May 1969 | Castle House, 6 Castle Drive, Dunfermline, Fife, KY11 8GG, Scotland |
| PRICE, Alfred Colin, Dr RESIGNED | Director | 19 Nov 2003 | 17 Oct 2012 | United Kingdom | June 1952 | 8 Greyfriars Road, Darlington, Durham, DL3 8VA |
| PRICE, Richard Andrew RESIGNED | Director | 16 Jul 2025 | 08 Jul 2026 | England | August 1971 | South West Water, Peninsula House, Rydon Lane, Exeter, EX2 7HR, England |
| RAE, John RESIGNED | Director | 03 Nov 2000 | 31 Mar 2008 | Scotland | October 1958 | Glenelg, Mavisbank Street, Airdrie, North Lanarkshire, ML6 0JA |
| RITCHIE, Andrew Brown RESIGNED | Director | 26 Jul 2018 | 30 Sep 2018 | United Kingdom | January 1966 | Affinity Water, Tamblin Way, Hatfield, AL10 9EZ, England |
| ROCHE, Ben Stuart RESIGNED | Director | 30 Jun 2020 | 25 Feb 2025 | England | January 1978 | Yorkshire Water, Western House, Halifax Road, Bradford, BD6 2SZ, England |
| SEPHTON, Tanya Louise RESIGNED | Director | 22 Jul 2020 | 31 Aug 2022 | England | November 1978 | South East Water, Rocfort Road, Snodland, ME6 5AH, England |
| SEXTON, John Richard RESIGNED | Director | 13 Dec 1995 | 01 Apr 2005 | | August 1948 | Cleve Mount 30 Clevedon Road, Tilehurst, Reading, Berkshire, RG31 6RL |
| SIMPSON, John Anthony RESIGNED | Director | 12 Oct 1993 | 31 Jan 1994 | United Kingdom | April 1939 | Wood Rising Sandy Lane, West Runton, Cromer, Norfolk, NR27 9LT |
| SMITH, Andrew Peter RESIGNED | Director | 26 Jun 2008 | 21 Apr 2010 | England | March 1966 | 101 Pixmore Way, Letchworth Garden City, Herts, SG6 3TR |
| SONDEN, Lester Clive RESIGNED | Director | 01 Aug 2010 | 31 Dec 2017 | England | December 1952 | Ses Water, London Road, Redhill, RH1 1LG, France |
| SPENCE, John James RESIGNED | Director | 01 Sep 2011 | 07 Mar 2016 | England | March 1956 | Southern House, Yeoman Road, Worthing, West Sussex, BN13 3NX, England |
| STADEN, Wendy Jane RESIGNED | Director | 20 Mar 2013 | 11 Aug 2017 | United Kingdom | May 1966 | PO BOX 218, Bristol Water, Bridgewater Road, Bristol, BS99 7AU, England |
| STEAR, Robert Martin RESIGNED | Director | 16 Apr 2015 | 09 Feb 2021 | United Kingdom | March 1971 | Seven Trent Water Limited, 2 St. John's Street, 7th Floor North, Coventry, CV1 2LZ, England |
| SUTTON, Graham Kent RESIGNED | Director | 12 Oct 1993 | 03 Mar 1999 | | December 1938 | 8 Highfields Court, Lisburn, Co Antrim, BT28 3GF |
| THOMPSON, Henry Hugh RESIGNED | Director | 01 Jun 1999 | 30 Jun 2003 | Northern Ireland | June 1943 | 133 Ballymoney Road, Banbridge, County Down, BT32 4HN |
| TUCKER, Jason Paul RESIGNED | Director | 23 Jan 2019 | 19 Nov 2024 | United Kingdom | January 1971 | Anglian Water, Thorpe Wood House, Thorpe Wood, Peterborough, PE3 6WT, England |
| UNALKAT, Ratna RESIGNED | Director | 01 Nov 2015 | 30 Mar 2016 | England | May 1983 | Affinity Water, Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ, England |
| WALWYN, Richard Charles RESIGNED | Director | 10 Feb 2021 | 25 Jun 2026 | England | May 1970 | Severn Trent Plc, 2 St. Johns Street, Coventry, CV1 2LZ, England |
| WILLIAMS, Christopher John RESIGNED | Director | 15 Apr 2016 | 18 Apr 2018 | England | January 1979 | Affinity Water, Tamblin Way, Hatfield, Hertfordshire, AL10 9EZ, England |
| WILSON, Mark RESIGNED | Director | 10 Nov 2008 | 01 Sep 2011 | England | April 1968 | 32, Wellcroft Gardens, Lymm, Cheshire, WA13 0LU |
| WOODCOCK, Paul RESIGNED | Director | 03 Mar 1999 | 01 Jul 2002 | | August 1957 | High Lynn, Houghton Road, St. Ives, Huntingdon, Cambridgeshire, PE27 6RN |