| David Charles Adrian Baumber | Director | 15 Aug 2016 | 31 Mar 2023 | British | 52 years |
| David Owen Beynon | Director | 10 Jan 2001 | 19 Dec 2008 | British | 68 years |
| David Owen Beynon | Director | 1 Jul 2009 | 15 Jun 2011 | British | 68 years |
| E.on Uk Directors Limited | Corporate Director | 24 Nov 2000 | 19 Dec 2008 | United Kingdom | - |
| E.on Uk Secretaries Limited | Corporate Secretary | 24 Nov 2000 | 15 Aug 2016 | United Kingdom | - |
| Graham John Wood | Director | 10 Jan 2001 | 31 Aug 2007 | British | 75 years |
| Gregor Koerdt | Director | 1 Oct 2013 | 15 Sept 2014 | German | 55 years |
| Jonathan Miles Cornelius | Secretary | 19 Dec 2008 | 1 Jul 2009 | British | - |
| Mary Delia Clarke | Director | 1 Jul 2009 | 15 Aug 2016 | Irish | 62 years |
| Nigel John May | Director | 15 Jun 2011 | 1 Dec 2011 | British | 67 years |
| Peter Jeremy Bridgewater | Director | 19 Dec 2008 | 1 Jul 2009 | British | 63 years |
| René Matthies | Director | 1 Oct 2013 | 31 May 2016 | German | 56 years |
| Richard John Dunkley | Director | 19 Dec 2008 | 1 Jul 2009 | British | 57 years |
| Rodney George Barber | Director | 24 Nov 2000 | 10 Jan 2001 | British | 80 years |
| Simon Christopher Cosson | Director | 15 Jun 2011 | 13 Sept 2013 | British | 57 years |