| Adrian Fernando | Director | 22 Aug 2000 | 1 Mar 2002 | British | 64 years |
| Andrew John Boetius | Director | 22 Aug 2000 | 1 Mar 2002 | British | 63 years |
| Brian Jefferson Tear | Director | 20 Jul 2010 | 12 Jun 2012 | British | 58 years |
| Brian Norman Dickie | Director | 15 Oct 2002 | 21 Oct 2002 | British | 71 years |
| Caroline Anne Harper | Director | 22 Aug 2000 | 1 Mar 2002 | British | 66 years |
| Christopher Benjamin Chaloner | Director | 22 Aug 2000 | 19 Feb 2002 | British | 68 years |
| Christopher Benjamin Chaloner | Secretary | 22 Aug 2000 | 9 Feb 2001 | British | - |
| Deborah Gandley | Director | 22 Aug 2016 | 14 Dec 2020 | British | 55 years |
| E.on Uk Directors Limited | Corporate Director | 21 Oct 2002 | 26 Nov 2013 | United Kingdom | - |
| E.on Uk Secretaries Limited | Corporate Director | 5 Dec 2005 | 20 Jul 2010 | United Kingdom | - |
| E.on Uk Secretaries Limited | Corporate Secretary | 21 Oct 2002 | 22 Aug 2016 | United Kingdom | - |
| Fiona Scott Stark | Director | 21 Oct 2002 | 5 Dec 2005 | British | 64 years |
| Fiona Scott Stark | Director | 12 Jun 2012 | 31 Dec 2016 | British | 64 years |
| Graham John Bartlett | Director | 21 Oct 2002 | 5 Dec 2005 | British | 70 years |
| John Alan Brown Dunlop | Secretary | 9 Feb 2001 | 1 Mar 2002 | British | - |
| Jose Roberto Davila | Director | 14 Dec 2020 | 14 Aug 2024 | British | 57 years |
| Martin Stephen William Stanley | Director | 1 Mar 2002 | 21 Oct 2002 | British | 63 years |
| Michael James Mcnally | Director | 15 Oct 2002 | 21 Oct 2002 | American | 72 years |
| Michael Robert French | Director | 14 Dec 2020 | 31 Oct 2021 | German | 58 years |
| Paul Colin Marsh | Director | 1 Mar 2002 | 21 Oct 2002 | British | 68 years |
| Paul Golby | Director | 21 Oct 2002 | 5 Dec 2005 | British | 75 years |
| René Matthies | Director | 26 Nov 2013 | 31 May 2016 | German | 56 years |
| Richard Paul Browning | Director | 22 Aug 2000 | 1 Mar 2002 | British | 68 years |
| Robert Allred Wooldridge | Director | 15 Oct 2002 | 21 Oct 2002 | American | 88 years |
| Roger Evans Partington | Director | 1 Mar 2002 | 7 Oct 2002 | British | 70 years |
| Roger Simon Coltman Phillips | Director | 22 Aug 2000 | 1 Mar 2002 | British | 71 years |
| Sara Lyn Vaughan | Director | 22 Mar 2017 | 26 Nov 2020 | British | 62 years |
| Shaun Kevin Bryant | Secretary | 1 Mar 2002 | 21 Oct 2002 | British | - |
| William Samuel Hugh Laidlaw | Director | 22 Aug 2000 | 30 Sept 2001 | British | 70 years |