| 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 |
| Carole Ann Colley | Director | 19 Dec 2001 | 31 Dec 2001 | American | 73 years |
| Carole Ann Colley | Secretary | 5 Dec 2000 | 31 Dec 2001 | American | - |
| 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 |
| Harry Charles Stahel Jnr | Director | 1 Jan 1997 | 4 Jun 1999 | British | 62 years |
| Jeffrey Michnowski | Director | 30 Dec 1999 | 31 Dec 2001 | American | 68 years |
| Jose Roberto Davila | Director | 14 Dec 2020 | 14 Aug 2024 | British | 57 years |
| Julia Vera Keeling | Secretary | 25 Jan 2001 | 31 Dec 2001 | British | - |
| Keith Gerard Stamm | Director | 20 Dec 1999 | 11 Dec 2001 | American | 66 years |
| Kieron Patrick Farry | Director | 14 Apr 1998 | 31 Dec 2001 | British | 76 years |
| Mark Ransom Conway | Director | 2 Sept 1993 | 30 Sept 1997 | British | 70 years |
| Martin Stephen William Stanley | Director | 31 Dec 2001 | 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 | 31 Dec 2001 | 21 Oct 2002 | British | 68 years |
| Paul Golby | Director | 21 Oct 2002 | 5 Dec 2005 | British | 75 years |
| Paul Waine | Director | 10 May 1999 | 26 Mar 2001 | British | 73 years |
| René Matthies | Director | 26 Nov 2013 | 31 May 2016 | German | 56 years |
| Robert James Mcnally | Director | 15 Oct 2002 | 21 Oct 2002 | American | 88 years |
| Roger Evans Partington | Director | 31 Dec 2001 | 7 Oct 2002 | British | 70 years |
| Roger Geoffrey Turner | Director | 2 Sept 1993 | 5 Apr 1997 | British | 76 years |
| Roger Henderson | Director | 7 Apr 1997 | 10 Apr 1998 | British | 67 years |
| Sara Lyn Vaughan | Director | 22 Mar 2017 | 26 Nov 2020 | British | 62 years |
| Shaun Kevin Bryant | Secretary | 31 Dec 2001 | 21 Oct 2002 | British | - |
| Stephen David Gebbie | Director | 14 Apr 1998 | 13 Mar 2001 | British | 65 years |
| Swift Incorporations Limited | Corporate Nominee Secretary | 2 Sept 1993 | 2 Sept 1993 | United Kingdom | - |
| Timothy Piers Patrick Neill | Secretary | 2 Sept 1993 | 5 Dec 2000 | British | - |