| Brian Jefferson Tear | Director | 30 Sept 2011 | 12 Jun 2012 | British | 58 years |
| Carl Goulton | Director | 12 Sept 2008 | 20 May 2011 | British | 54 years |
| Christopher Duncan Badger | Director | 16 Nov 2005 | 26 Jan 2007 | Australian | 69 years |
| Christopher James Lovatt | Director | 8 Dec 2017 | 31 Jan 2025 | British | 57 years |
| Donald Leiper | Director | 16 Nov 2005 | 28 Jan 2016 | British | 62 years |
| E.on Uk Directors Limited | Corporate Director | 8 Nov 2005 | 16 Nov 2005 | United Kingdom | - |
| E.on Uk Secretaries Limited | Corporate Secretary | 8 Nov 2005 | 16 Nov 2005 | United Kingdom | - |
| E.on Uk Secretaries Limited | Corporate Secretary | 11 Sept 2012 | 22 Aug 2016 | United Kingdom | - |
| Gregory Macgill Dunn | Secretary | 3 Sept 2007 | 24 May 2011 | British | - |
| James Timothy Lightfoot | Director | 28 Jan 2016 | 8 Dec 2017 | British | 60 years |
| James William Jones | Secretary | 24 May 2011 | 31 Aug 2012 | - | - |
| James William Jones | Secretary | 16 Nov 2005 | 3 Sept 2007 | British | - |
| John Colin Glasgow | Director | 15 Mar 2007 | 16 Feb 2009 | British | 64 years |
| John Crackett | Director | 16 Nov 2005 | 4 Jul 2007 | British | 68 years |
| Martin Hoehler | Director | 1 Feb 2010 | 23 Feb 2011 | German | 56 years |
| Michael Lindsay Thomas | Director | 24 May 2011 | 30 Sept 2011 | Australian | 56 years |
| Michael Paul Woodhead | Director | 1 Feb 2010 | 31 Jan 2013 | British | 70 years |
| Neal Richard Carr | Director | 16 Nov 2005 | 12 Sept 2008 | British | 64 years |
| Peter Westwood | Director | 16 Nov 2005 | 31 Jan 2008 | British | 65 years |
| René Matthies | Director | 2 Jul 2012 | 31 May 2016 | German | 56 years |
