| SCHELKENS, Luc Oscar A ACTIVE | Director | 19 Mar 2026 | | Belgium | April 1965 | Fortum, Lage Mosten 55, Breda, 4822NK, Netherlands |
| WALLIN, Minna Maarit ACTIVE | Director | 15 Jun 2023 | | Finland | May 1982 | Keilalahdentie 2-4, Espoo, 02150, Finland |
| BALDWIN, Stephen Francis John RESIGNED | Secretary | 02 Sep 1992 | 21 Aug 1995 | | | 18 Jaffray Road, Bromley, Kent, BR2 9NR |
| PELTOLA, Lauri Tapio RESIGNED | Secretary | 15 Apr 1997 | 16 Sep 2002 | | | 3 Denbigh Gardens, Richmond, Surrey, TW10 6EN |
| PELTOLA, Lauri Tapio RESIGNED | Secretary | | 02 Sep 1992 | | | 3 Queens Crescent, Richmond, Surrey, TW10 6HG |
| CLIFFORD CHANCE SECRETARIES LIMITED RESIGNED | Secretary | 21 Aug 1995 | 15 Apr 1997 | | | 200 Aldersgate Street, London, EC1A 4JJ |
| GOODWILLE LIMITED RESIGNED | Secretary | 16 Sep 2002 | 01 Apr 2022 | | | 24, Old Queen Street, London, SW1H 9HP, United Kingdom |
| AURANNE, Eero Kalevi RESIGNED | Director | 01 Aug 1998 | 07 Dec 1999 | | March 1959 | Paatsamantie 8 A 5, Helsinki 00320, Finland, FOREIGN |
| CIMDINA, Ginta RESIGNED | Director | 15 Dec 2021 | 15 Jun 2023 | Finland | December 1973 | Italahdenkatu 2 A14, Helsinki, 00210, Finland |
| DEANE, John Anthony RESIGNED | Director | 26 Sep 1994 | 09 Oct 2000 | England | January 1946 | Aprils End, Nairdwood Lane, Prestwood, Great Missenden, Buckinghamshire, HP16 0QH |
| HOKSTRAND, Nils Ola RESIGNED | Director | 15 Jun 2023 | 20 Mar 2024 | Sweden | December 1964 | Fortum Sverige Ab, 3, Rattarvagen, Solna, 169 68, Sweden |
| HUOPALAHTI, Kari Jalmari RESIGNED | Director | | 06 Jun 2003 | | March 1947 | Isokaari 20 B37, Helsinki, Finland |
| JONES, Thomas Philip, Sir RESIGNED | Director | | 15 Apr 1997 | | July 1931 | 16 Heralds Place, London, SE11 4NP |
| KAVALEFF, Anette Mona Birgitta RESIGNED | Director | | 05 Apr 1995 | | June 1956 | Tammistontie 26, 01510 Vantaa, FOREIGN, Finland |
| KOHLER, Valerie Lee, Dr RESIGNED | Director | 10 Oct 2000 | 11 Apr 2005 | | June 1955 | 54 Gloucester Road, Cirencester, Gloucestershire, GL7 2LH |
| KUULA, Tapio Teuvo RESIGNED | Director | 08 Feb 1999 | 16 Dec 2009 | | May 1957 | Janismaki 3 B, Espoo, 02940, Finland, FOREIGN |
| LEHTINEN, Paivi Marjatta RESIGNED | Director | 01 Jan 2017 | 01 Sep 2019 | Finland | November 1955 | Pob 100, Fortum, 00048, Finland |
| MANNION, Martin Clinton, Doctor RESIGNED | Director | 11 Nov 1996 | 23 Sep 1997 | | January 1962 | 3 Home Farm Close, East Hendred, Wantage, Oxfordshire, OX12 8LR |
| MANTYNEN, Risto Antero RESIGNED | Director | 05 Apr 1995 | 12 May 1998 | | May 1938 | 7, Lokitie, Helsinki 00980, FOREIGN, Finland |
| MASALA, Hanna-Leena RESIGNED | Director | 01 Sep 2019 | 15 Dec 2021 | Finland | April 1976 | P.O. Box 100, Keilalahdentie 2-4, Espoo, 00048, Finland |
| NUMMINEN, Teuvo Kalevi RESIGNED | Director | | 26 Sep 1994 | | March 1932 | Koivuviita 6 B, 02180 Espoo, Findland |
| PAIVARINTA, Erkki Olavi RESIGNED | Director | 12 Jul 2002 | 28 Apr 2011 | | June 1948 | Vuoripolku 2, Inkoo, 10210, Finland |
| SALO, Reijo Kalevi RESIGNED | Director | 16 Dec 2009 | 19 Mar 2026 | Finland | March 1961 | Fortum Oyj, Keilaniementie 1, Espoo, 00048, Finland |
| SALOSAARI, Esko RESIGNED | Director | 13 Oct 2000 | 12 Jul 2002 | | June 1950 | 24 Kendal Place, London, SW15 2QZ |
| SALOSAARI, Esko Ilmari RESIGNED | Director | | 26 Sep 1994 | | June 1950 | 60 Castellain Road, London, W9 1EX |
| TUOMELA, Tiina Marjukka RESIGNED | Director | 28 Mar 2007 | 31 Dec 2016 | Finland | May 1966 | Jääskeläntie 31, B, Espoo, FIN-02660, Finland |
| GCS CORPORATE NOMINEES LIMITED RESIGNED | Director | 11 Apr 2005 | 30 Sep 2016 | | | St James House, 13 Kensington Square, London, W8 5HD |