| Alasdair Murray Macconnell | Director | 11 Sept 2003 | 23 Jun 2010 | British | 66 years |
| Donald Stewart Mackay | Director | 11 Sept 2003 | 28 Jan 2005 | British | 82 years |
| Gerry Campbell More | Director | 2 Feb 2009 | 31 Mar 2011 | British | 64 years |
| John Francis Brophy | Director | 25 Jun 2006 | 15 Aug 2008 | British | 57 years |
| John Graham Gunn Reid | Director | 22 Jun 2010 | 25 May 2018 | British | 61 years |
| Jonathon Alexander Milne | Director | 11 Sept 2003 | 17 Jan 2011 | British | 55 years |
| Karen Linda Naysmith | Director | 28 Jan 2005 | 12 May 2006 | British | 51 years |
| Kevin James Brady | Director | 11 Sept 2003 | 25 May 2018 | British | 65 years |
| Ledge Services Limited | Corporate Nominee Director | 10 Jun 2003 | 11 Sept 2003 | United Kingdom | - |
| Ledingham Chalmers | Corporate Nominee Secretary | 10 Jun 2003 | 1 Apr 2006 | - | - |
| Paul John Devine | Director | 15 Aug 2008 | 2 Feb 2009 | British | 62 years |
| Robert James Millar | Director | 31 Mar 2011 | 25 May 2018 | British | 72 years |