| Alan Campbell Ritchie | Director | 7 Oct 2009 | 14 Oct 2009 | British | 58 years |
| Biif Corporate Services Limited | Corporate Director | 14 Oct 2009 | 17 Mar 2016 | United Kingdom | - |
| David William Howitt Steeds | Director | 24 May 2005 | 30 Jun 2007 | British | 76 years |
| Dws Directors Limited | Corporate Nominee Director | 2 Apr 2004 | 26 May 2004 | - | - |
| Dws Secretaries Limited | Corporate Nominee Secretary | 2 Apr 2004 | 12 Jul 2004 | - | - |
| John Mcdonagh | Director | 30 Jun 2007 | 7 Oct 2009 | British | 56 years |
| Jonathan Peter Doberman | Director | 17 Mar 2016 | 10 Apr 2024 | British | 48 years |
| Laurence Seymour Clarke | Director | 7 Oct 2009 | 1 Jun 2012 | British | 53 years |
| Maclay Murray & Spens | Corporate Nominee Secretary | 24 May 2005 | 23 Nov 2006 | United Kingdom | - |
| Maclay Murray & Spens Llp | Corporate Secretary | 23 Nov 2006 | 6 Nov 2009 | United Kingdom | - |
| Mcdermott Will & Emery | Corporate Secretary | 12 Jul 2004 | 24 May 2005 | - | - |
| Michael Forrest | Director | 1 Jun 2012 | 3 Apr 2014 | British | 46 years |
| Michael Joseph Ryan | Director | 30 Jun 2007 | 7 Oct 2009 | Irish | 59 years |
| Nestor Augusto Castillo Borrero | Director | 3 Apr 2014 | 4 Sept 2015 | British | 52 years |
| Richard Wilson Jewson | Director | 28 May 2005 | 1 Jun 2007 | British | 81 years |
| The Pfi Infrastructure Company Plc | Corporate Director | 26 May 2004 | 17 Mar 2016 | United Kingdom | - |
