| Adrian John Bannister | Director | 15 Oct 2003 | 5 Aug 2010 | British | 62 years |
| Andrew Lundie Glen | Director | 1 Sept 2011 | 17 Sept 2014 | British | 63 years |
| David Cockburn | Director | 16 Jun 2004 | 10 Jan 2011 | British | 72 years |
| Douglas Alan Sedge | Director | 10 Jan 2011 | 7 Apr 2014 | British | 71 years |
| Graham Thomson | Director | 16 Jun 2004 | 30 Jun 2010 | British | 67 years |
| Kenneth Myles Scott | Director | 15 Oct 2003 | 27 Oct 2006 | British | 75 years |
| Leigh James Howarth | Director | 10 Jan 2011 | 31 Aug 2011 | British | 62 years |
| Maclay Murray & Spens Llp | Corporate Nominee Secretary | 31 Mar 2008 | 7 Feb 2011 | United Kingdom | - |
| Malcolm Wilson | Director | 16 Jun 2004 | 31 Mar 2010 | British | 80 years |
| Md Secretaries Limited | Corporate Secretary | 15 Feb 2011 | 5 Nov 2012 | United Kingdom | - |
| Neil Austin Johnson | Director | 17 Sept 2014 | 17 May 2023 | British | 57 years |
| P & W Directors Limited | Corporate Nominee Director | 26 Aug 2003 | 15 Oct 2003 | - | - |
| P & W Secretaries Limited | Corporate Nominee Secretary | 26 Aug 2003 | 15 Oct 2003 | United Kingdom | - |
| Paull & Williamsons | Corporate Secretary | 15 Oct 2003 | 31 Mar 2008 | United Kingdom | - |
| Richard Alexander Wilson | Director | 10 Jan 2011 | 6 Oct 2014 | British | 61 years |
| Stewart Andrew Alan Mitchell | Director | 7 Apr 2014 | 17 May 2023 | British | 60 years |
