| Adrian Joseph Chatterton | Director | 23 Oct 2008 | 1 Jul 2020 | British | 63 years |
| Alice Kyne Delahunty | Director | 22 Oct 2015 | 31 Mar 2018 | Irish | 45 years |
| Daniel Steven Shaw | Director | 22 Oct 2015 | 1 Mar 2017 | British | 68 years |
| David Allen Farrier | Director | 9 Aug 2007 | 30 May 2014 | British | 76 years |
| David Gerald Rogers | Director | 1 Jan 2008 | 10 Dec 2012 | British | 72 years |
| E.on Uk Directors Limited | Corporate Director | 24 Dec 2004 | 17 Jul 2007 | United Kingdom | - |
| E.on Uk Secretaries Limited | Corporate Director | 24 Dec 2004 | 17 Jul 2007 | United Kingdom | - |
| E.on Uk Secretaries Limited | Corporate Secretary | 24 Dec 2004 | 23 Oct 2008 | United Kingdom | - |
| E.on Uk Secretaries Limited | Corporate Secretary | 10 Dec 2012 | 30 Sept 2019 | United Kingdom | - |
| Gareth Swales | Director | 23 Oct 2008 | 15 May 2009 | British | 50 years |
| Ian Peter Fairclough | Director | 17 Jul 2007 | 9 Aug 2007 | British | 65 years |
| Ian Peter Fairclough | Secretary | 23 Oct 2008 | 13 Jul 2012 | British | - |
| Johannes Boske | Director | 1 Jul 2020 | 31 Dec 2021 | German | 49 years |
| Karl Henrik Peter Wall | Director | 1 May 2023 | 31 Dec 2023 | Swedish | 40 years |
| Keith Plowman | Director | 9 Aug 2007 | 1 Jan 2008 | British | 68 years |
| Lutz Harald Rose | Director | 1 Jan 2024 | 6 May 2025 | German | 41 years |
| Mark Lindsay Bygraves | Director | 17 Jul 2007 | 9 Aug 2007 | British | 61 years |
| Ronald Heyselaar | Director | 23 Oct 2008 | 15 May 2009 | Dutch | 68 years |
| Rudolf Neuwirth | Director | 10 Dec 2012 | 30 Jun 2015 | German | 53 years |
| Sam Peter Baneke | Director | 1 Jul 2020 | 6 May 2025 | British | 39 years |
| Simon John Stanton | Director | 1 Jan 2024 | 23 May 2025 | British | 54 years |
| Simon Prousch | Director | 18 Jun 2018 | 1 Jul 2020 | German | 46 years |
| Sven Utermöhlen | Director | 10 Dec 2012 | 22 Oct 2015 | German | 58 years |
| Thomas Michel | Director | 1 Jul 2020 | 31 Dec 2023 | German | 48 years |
| Timothy James Bell | Director | 1 Mar 2017 | 30 Jun 2020 | British | 53 years |