| Alan Edward Birch | Director | 15 Jun 2004 | 27 Aug 2004 | British | 56 years |
| Alan Edward Birch | Director | 23 Oct 2007 | 31 Oct 2017 | British | 56 years |
| Andrew John Sutton | Director | 2 Aug 2001 | 11 Feb 2004 | British | 70 years |
| Bernard Leslie Westbrook | Director | 20 Feb 2007 | 23 Oct 2007 | British | 80 years |
| Geoffrey Keith Howard Mason | Director | 14 Feb 2001 | 31 May 2007 | British | 72 years |
| Henry Lafferty | Director | 14 Feb 2001 | 2 Aug 2001 | British | 73 years |
| Ian Richard Gethin | Director | 23 Oct 2007 | 15 Sept 2011 | British | 55 years |
| Jonathan Michael Simpson | Director | 31 Oct 2017 | 31 Mar 2023 | British | 53 years |
| Kjell Konrad Karlsen | Director | 20 Feb 2007 | 23 Oct 2007 | Norwegian | 69 years |
| Ppp Nominee Directors Limited | Corporate Director | 15 Sept 2011 | 31 Oct 2017 | United Kingdom | - |
| Ray Gordon | Director | 13 Dec 2004 | 29 Apr 2005 | British | 66 years |
| Robert Anthony Wallace | Director | 27 Aug 2004 | 13 Dec 2004 | British | 76 years |
| Robert Nigel Johnson | Director | 11 Feb 2004 | 15 Jun 2004 | British | 68 years |
| Secretariat Services Limited | Corporate Secretary | 14 Feb 2001 | 23 Oct 2007 | United Kingdom | - |
| Stuart Wilson Laird | Director | 20 Feb 2007 | 23 Oct 2007 | British | 73 years |