| Anne Rutherford Stewart | Director | 8 Mar 2007 | 30 Jun 2010 | British | 65 years |
| Barbara Ida Mary Turnbull | Director | 5 May 2004 | 30 Jun 2010 | British | 69 years |
| Douglas Alister Middleton | Director | 30 Jun 2010 | 12 Mar 2012 | British | 57 years |
| Graeme Ronald Rae Hogg | Director | 5 May 2004 | 10 Sept 2019 | British | 61 years |
| Graeme Ronald Rae Hogg | Secretary | 5 May 2004 | 12 Dec 2012 | British | - |
| Hugh Michael William Macnish Porter | Director | 5 May 2004 | 3 Sept 2004 | British | 58 years |
| John David Corstorphine | Director | 5 May 2004 | 4 Apr 2008 | British | 81 years |
| John Hamilton | Director | 30 Nov 2011 | 29 Sept 2014 | British | 68 years |
| Karen Jane Hirst | Director | 25 Feb 2013 | 27 May 2016 | British | 58 years |
| Liam Hugh Fennell | Director | 3 Aug 2006 | 30 Jun 2010 | British | 66 years |
| Md Directors Limited | Corporate Nominee Director | 27 Nov 2003 | 5 May 2004 | United Kingdom | - |
| Md Secretaries Limited | Corporate Nominee Secretary | 27 Nov 2003 | 5 May 2004 | United Kingdom | - |
| Paul Adrian Walker | Director | 7 Dec 2009 | 23 Apr 2012 | British | 68 years |
| Peter Connor | Director | 27 Apr 2004 | 14 Dec 2019 | British | 85 years |
| Richard George Wynne | Director | 5 May 2004 | 17 May 2017 | British | 70 years |
| Robert Osborne | Director | 3 Aug 2006 | 7 Dec 2009 | British | 72 years |
| Roderick Andrew Elliott | Director | 30 Jun 2010 | 12 Mar 2012 | Irish | 66 years |
| Stuart Currie Sanders | Director | 3 Sept 2004 | 3 Aug 2006 | British | 76 years |