| Brian Jefferson Tear | Director | 4 Jul 2007 | 12 Jun 2012 | British | 58 years |
| Bruce Larry Levy | Director | 3 May 1996 | 7 Nov 2001 | United States Citizen | 71 years |
| Cheryl Morgan Foley | Director | 3 May 1996 | 15 Jul 1999 | American | 79 years |
| Donald George Bacon | Director | 8 May 2002 | 16 Jan 2004 | Canadian | 89 years |
| E.on Uk Directors Limited | Corporate Director | 4 Jul 2007 | 23 Feb 2011 | United Kingdom | - |
| E.on Uk Secretaries Limited | Corporate Secretary | 4 Jul 2007 | 22 Aug 2016 | United Kingdom | - |
| Fiona Scott Stark | Director | 23 Feb 2011 | 31 Dec 2016 | British | 64 years |
| Fred D Hafer | Director | 23 Jun 1997 | 8 May 2002 | United States | 85 years |
| Graham John Bartlett | Director | 16 Jan 2004 | 4 Jul 2007 | British | 70 years |
| Hackwood Directors Limited | Corporate Nominee Director | 3 May 1996 | 3 May 1996 | United Kingdom | - |
| Hackwood Secretaries Limited | Corporate Nominee Secretary | 3 May 1996 | 12 Mar 1997 | United Kingdom | - |
| Hugh Campbell Hamilton | Secretary | 12 Mar 1997 | 1 Feb 1999 | British | - |
| Ian Elcock | Secretary | 1 Jan 2002 | 16 Jan 2004 | British | - |
| Ira Jolles | Director | 9 Jun 1999 | 7 Nov 2001 | American | 88 years |
| James Eugene Rogers | Director | 3 May 1996 | 15 Jul 1999 | American | 79 years |
| James Robert Leva | Director | 7 May 1996 | 31 May 1997 | British | 94 years |
| James Wayne Leonard | Director | 7 May 1996 | 8 Jul 1997 | British | 76 years |
| John Bryant | Director | 21 Oct 1998 | 15 Jul 1999 | British | 80 years |
| John Gourlay Graham | Director | 3 May 1996 | 10 Feb 1999 | American | 88 years |
| Keith Gerard Stamm | Director | 8 May 2002 | 16 Jan 2004 | American | 66 years |
| Kevin J Keough | Director | 8 May 2002 | 31 Jan 2003 | American | 66 years |
| Madeleine Weigel Ludlow | Director | 8 Jul 1997 | 1 Jan 1999 | American | 72 years |
| Maria Antoniou | Director | 23 Feb 2011 | 16 Aug 2013 | British | 61 years |
| Mark T Clark | Director | 8 May 2002 | 16 Jan 2004 | American | 76 years |
| Michael Alan Hughes | Director | 27 Sept 1999 | 8 May 2002 | British | 81 years |
| Paul Golby | Director | 16 Jan 2004 | 4 Jul 2007 | British | 75 years |
| Peter Jeremy Bridgewater | Director | 16 Jan 2004 | 2 Feb 2007 | British | 63 years |
| René Matthies | Director | 2 Jul 2012 | 31 May 2016 | German | 56 years |
| Robert Harvey Browne | Secretary | 1 Feb 1999 | 31 Dec 2001 | British | - |
| Robert Taylor | Director | 16 Jan 2004 | 4 Jul 2007 | British | 65 years |
| Roger David Murray | Director | 27 Sept 1999 | 8 May 2002 | British | 81 years |
| Stephanie Kay Pickerell | Secretary | 16 Jan 2004 | 4 Jul 2007 | British | - |
| Stephen Anthony King | Director | 27 Sept 1999 | 31 Jan 2003 | British | 66 years |