| Alan Browning Mackay | Director | 1 Apr 2010 | 3 Oct 2013 | British | 63 years |
| Burness (directors) Limited | Corporate Nominee Director | 27 Jun 2003 | 24 Jul 2003 | United Kingdom | - |
| Burness Solicitors | Corporate Nominee Secretary | 27 Jun 2003 | 19 Dec 2003 | - | - |
| Charles John Sherard Beazley | Director | 5 Jul 2004 | 30 Jun 2006 | British | 66 years |
| Dean Leonard Clarke | Director | 27 Nov 2009 | 1 Apr 2010 | British | 56 years |
| Dean Leonard Clarke | Secretary | 19 Dec 2003 | 1 Apr 2010 | British | - |
| Gareth Mervyn Owens | Director | 5 Jul 2004 | 31 Jul 2005 | British | 70 years |
| Glyn Parry Jones | Director | 24 Jul 2003 | 30 Dec 2004 | British | 73 years |
| Helen Julia Walsh | Director | 7 Aug 2015 | 30 Sept 2022 | British | 63 years |
| Janine Nicholls | Director | 6 Jan 2011 | 28 Jun 2013 | British | 58 years |
| Jeffrey Stuart Meyer | Director | 28 Jun 2006 | 1 Apr 2010 | American | 67 years |
| Karen Jane Sands | Director | 7 Aug 2015 | 6 Feb 2024 | British | 48 years |
| Keith Andrew Starling | Director | 1 Oct 2007 | 1 Apr 2010 | British | 61 years |
| Kevin Stephen Crossett | Director | 1 Oct 2007 | 13 Aug 2008 | American | 65 years |
| Leslie Allan Aitkenhead | Director | 28 Jun 2006 | 1 Jul 2009 | British | 74 years |
| Magnus James Goodlad | Director | 18 Sept 2013 | 27 Jun 2014 | British | 53 years |
| Mark Robertshaw | Director | 24 Jul 2003 | 31 Jul 2004 | British | 57 years |
| Paul William Feeney | Director | 5 Jul 2004 | 13 Nov 2007 | British | 62 years |
| Peter Gale | Director | 1 Apr 2010 | 9 May 2024 | British | 69 years |
| Quintin Rupert Salter Price | Director | 5 Jul 2004 | 6 May 2005 | British | 64 years |
| Roger Michael Bartley | Director | 5 Jul 2004 | 31 Jul 2006 | British | 73 years |
| Simon Gareth Moss | Director | 14 Jul 2014 | 14 Feb 2024 | British | 51 years |
| Steen Steincke | Director | 5 Jul 2004 | 31 Aug 2004 | Danish | 77 years |
| Stephen Allen | Director | 14 Jul 2014 | 7 Aug 2015 | British | 64 years |
| Susan Deborah Leigh Flynn | Director | 1 Apr 2010 | 28 Jun 2010 | British | 69 years |
| Susanna Frances Davies | Director | 5 Jul 2004 | 31 Jan 2005 | British | 66 years |
| William Lindsay Mcgowan | Director | 27 Nov 2009 | 1 Apr 2010 | British | 57 years |