| Adrian Joseph Chatterton | Director | 10 Dec 2012 | 13 Nov 2020 | British | 63 years |
| Alice Kyne Delahunty | Director | 22 Oct 2015 | 31 Mar 2018 | Irish | 45 years |
| Brian Caffyn | Director | 2 Feb 2001 | 24 Jul 2002 | Us | 67 years |
| Chantal Thomas | Secretary | 1 Aug 2008 | 29 Mar 2011 | British | - |
| Clare Jan Forbes | Director | 1 Jul 2020 | 6 Dec 2023 | British | 54 years |
| Daniel Steven Shaw | Director | 22 Oct 2015 | 1 Mar 2017 | British | 68 years |
| David Gerald Rogers | Director | 1 Jan 2008 | 10 Dec 2012 | British | 72 years |
| E.on Uk Secretaries Limited | Corporate Secretary | 10 Dec 2012 | 30 Sept 2019 | United Kingdom | - |
| Emma Trevis | Secretary | 3 May 2005 | 1 Aug 2008 | British | - |
| Gareth Elwyn Howells | Secretary | 20 May 2011 | 25 Sept 2012 | - | - |
| Guy Carlyle Thackwray | Director | 8 Aug 2002 | 24 Nov 2003 | British | 59 years |
| Ian John Sharpe | Director | 30 Jan 2001 | 24 Nov 2003 | British | 72 years |
| Ian Peter Fairclough | Secretary | 20 May 2011 | 20 May 2011 | - | - |
| Ian Peter Fairclough | Secretary | 14 Jan 2005 | 3 May 2005 | British | - |
| Instant Companies Limited | Corporate Nominee Director | 30 Jan 2001 | 30 Jan 2001 | United Kingdom | - |
| Jason Scagell | Director | 24 Nov 2003 | 19 Dec 2006 | British | 59 years |
| Jonathan Miles Cornelius | Secretary | 19 May 2006 | 20 May 2011 | British | - |
| Keith Plowman | Director | 19 Dec 2006 | 1 Jan 2008 | British | 68 years |
| Nicholas John Fathers | Secretary | 24 Nov 2003 | 14 Jan 2005 | British | - |
| Paul John Webster | Director | 24 Nov 2003 | 22 Jun 2012 | British | 71 years |
| Paul Mulvihill | Director | 10 Dec 2012 | 22 Oct 2015 | British | 67 years |
| Ralf Drüppel | Director | 10 Dec 2012 | 22 Oct 2015 | German | 59 years |
| Rudolf Neuwirth | Director | 10 Dec 2012 | 30 Jun 2015 | German | 53 years |
| Simon Prousch | Director | 18 Jun 2018 | 1 Jul 2020 | German | 46 years |
| Simon Prousch | Director | 13 Nov 2020 | 22 Mar 2022 | German | 46 years |
| Steven George Downs | Secretary | 30 Jan 2001 | 24 Nov 2003 | British | - |
| Swift Incorporations Limited | Corporate Nominee Secretary | 30 Jan 2001 | 30 Jan 2001 | United Kingdom | - |
| Timothy James Bell | Director | 1 Mar 2017 | 30 Jun 2020 | British | 53 years |
