| ARTHURSSON, Jan Sigurd Michael ACTIVE | Director | 12 Jun 2023 | | Sweden | May 1958 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| BEAVOGUI, Mohamed Sigbe ACTIVE | Director | 01 Jun 2024 | | Italy | August 1953 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| CHANDA, Osward Mulenga ACTIVE | Director | 20 Oct 2025 | | Zambia | June 1965 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| FURUMAI, Hiroaki, Professor ACTIVE | Director | 23 Jan 2024 | | Japan | June 1956 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| GREEN, Andrew James ACTIVE | Director | 09 Oct 2020 | | England | September 1955 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| MCCAFFERTY, Patrick ACTIVE | Director | 20 Aug 2026 | | Australia | March 1963 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| O'NEIL, Maureen Patricia ACTIVE | Director | 01 Aug 2020 | | Canada | September 1943 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| PRASHAD, Indra ACTIVE | Director | 16 Sep 2026 | | Canada | March 1965 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| SADOFF, Claudia, Dr ACTIVE | Director | 01 Sep 2025 | | United States | July 1964 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| TLOU, Sheila, Professor ACTIVE | Director | 01 Sep 2025 | | South Africa | November 1953 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| TOWLE, Andrew ACTIVE | Director | 01 Jan 2023 | | United States | December 1965 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| VAN WERSCH-LENDERS, Ankie ACTIVE | Director | 18 Sep 2025 | | Netherlands | November 1976 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| LAIRD, Paula Karen Julie RESIGNED | Secretary | 07 Dec 2017 | 31 Aug 2023 | | | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| BRYDON JANNETTA, Rachel Sophie RESIGNED | Director | 21 Nov 2011 | 24 Jun 2014 | Usa | January 1960 | 47, - 49 Durham Street, London, SE11 5JD, England |
| CARR, Rosemary Elizabeth RESIGNED | Director | 03 Dec 2015 | 12 Oct 2018 | United Kingdom | April 1964 | 47-49, Durham Street, London, SE11 5JD |
| CLARK, Timothy Nicholas RESIGNED | Director | 11 Oct 2013 | 09 Oct 2020 | England | January 1951 | 6th Floor, 20, Canada Square, London, E14 5NN, England |
| CONNOLLY, John Michael RESIGNED | Director | 11 Jun 2014 | 07 Jul 2016 | Canada | January 1950 | 5a-400, Laurier Avenue, East Ottawa, Canada |
| ELIASSON, Jan RESIGNED | Director | 07 Dec 2010 | 12 Jun 2012 | Sweden | September 1940 | 15, Stockbyvagen, Stocksund, S-18278, Sweden |
| HODKINSON, Gregory Scott RESIGNED | Director | 29 Apr 2010 | 27 Sep 2011 | United States | June 1955 | 47, - 49 Durham Street, London, SE11 5JD, England |
| JUTTERSTRÖM, Christina Odlander RESIGNED | Director | 12 Dec 2014 | 18 Jul 2017 | Sweden | March 1940 | 47-49, Durham Street, London, SE11 5JD |
| KATWALA, Sandeep Shashikant RESIGNED | Director | 29 Apr 2010 | 09 Oct 2015 | England | June 1960 | One Silk Street, London, EC2Y 8HQ, United Kingdom |
| KELLY, Vincent Anthony RESIGNED | Director | 29 Apr 2010 | 29 Aug 2012 | Australia | April 1953 | Yarra Valley Water, Lucknow Street, Mitcham, Melbourne, 3132, Australia |
| KHOZA, Snowy Joyce, Dr RESIGNED | Director | 01 Jun 2024 | 05 Jul 2024 | South Africa | February 1958 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| KRANTZ, Tobias, Dr RESIGNED | Director | 18 Jul 2017 | 12 Jun 2023 | Sweden | April 1971 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| MAYWALD, Karlene Ann, The Honourable RESIGNED | Director | 19 Aug 2021 | 20 Aug 2026 | Australia | May 1961 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| MCINNES, David RESIGNED | Director | 07 Jul 2016 | 12 Jul 2018 | Canada | May 1961 | 47-49, Durham Street, London, SE11 5JD |
| MUNRO, Martin RESIGNED | Director | 21 Jun 2022 | 16 Sep 2026 | Canada | September 1960 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| NICHOLSON, Annette Josephine RESIGNED | Director | 12 Jul 2018 | 21 Jun 2022 | Canada | July 1957 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| ORN, Peter RESIGNED | Director | 05 Nov 2012 | 11 Jul 2014 | Sweden | February 1954 | 47, - 49 Durham Street, London, SE11 5JD, England |
| PELCZER, Jeremy David RESIGNED | Director | 29 Apr 2010 | 08 Jul 2016 | England | June 1957 | 47, - 49 Durham Street, London, SE11 5JD, England |
| RAO, Mala, Professor RESIGNED | Director | 07 Dec 2018 | 30 Sep 2025 | England | November 1954 | 6th Floor, 20 Canada Square, London, E14 5NN, England |
| ROBERT, Marc Henry RESIGNED | Director | 24 Jun 2014 | 31 Dec 2022 | United States | February 1960 | Water Asset Management, 509 Madison Avenue, New York, 10022, United States |
| SKINNER, Robert Clive, Professor RESIGNED | Director | 30 Oct 2012 | 19 Aug 2021 | Australia | June 1949 | 6th Floor, 20 Canada Square, London, E14 5NN, England |