| Alan William Fullerton Mcvicker | Director | 25 Jan 2006 | 21 Jul 2006 | British | 59 years |
| Alistair Daniel Brookes | Director | 1 Jan 2016 | 27 Jul 2016 | British | 50 years |
| Andrew Keith Harmer | Director | 29 Sept 2010 | 18 Oct 2012 | British | 62 years |
| Andrew Stephen Pearson | Director | 23 Apr 2012 | 27 Aug 2013 | British | 62 years |
| Burness | Corporate Nominee Secretary | 18 Mar 2003 | 1 Aug 2004 | - | - |
| Burness (directors) Limited | Corporate Nominee Director | 18 Mar 2003 | 11 Nov 2004 | United Kingdom | - |
| Burness Llp | Corporate Secretary | 1 Aug 2004 | 8 Nov 2004 | United Kingdom | - |
| Carolyn Ann Gibson | Secretary | 1 Feb 2007 | 30 Apr 2008 | British | - |
| Christopher Brian Waples | Director | 29 Sept 2010 | 23 Apr 2012 | British | 67 years |
| Christopher Surch | Director | 1 May 2009 | 29 Sept 2010 | British | 65 years |
| Darren Stockley | Director | 25 Jan 2006 | 31 Jul 2009 | British | 57 years |
| David John Downes | Director | 8 Nov 2004 | 31 Dec 2005 | British | 81 years |
| David Kevin Mulligan | Director | 1 Apr 2014 | 31 Dec 2015 | British | 57 years |
| David Michael Hardy | Director | 29 Sept 2010 | 16 May 2011 | British | 69 years |
| Fraser Andrew Norton Welham | Director | 1 Jan 2006 | 27 May 2009 | British | 62 years |
| Ian Frederick Goodfellow | Director | 29 Sept 2010 | 31 Mar 2013 | British | 72 years |
| Jeremy John Cobbett Simpson | Director | 1 Aug 2011 | 31 Mar 2014 | British | 55 years |
| Joanna Griffiths | Director | 27 Aug 2013 | 29 Jul 2016 | British | 47 years |
| Julian Ashley Tranter | Director | 29 Jan 2010 | 29 Sept 2010 | British | 59 years |
| Mark Alfred Cowan | Director | 28 Jul 2016 | 22 Jan 2018 | British | 56 years |
| Mark Ian Saunders | Director | 1 Jul 2009 | 31 Jul 2011 | British | 58 years |
| Michael Charles Edward Averill | Director | 8 Nov 2004 | 30 Sept 2007 | British | 75 years |
| Michael James Clarke | Director | 8 Nov 2004 | 30 Apr 2005 | British | 68 years |
| Nigel Ian Aitchison | Director | 8 Nov 2004 | 23 Jan 2008 | British | 58 years |
| Paul Kaye | Secretary | 11 Nov 2004 | 31 Jan 2007 | British | - |
| Peter Damian Eglinton | Director | 15 Apr 2013 | 31 Mar 2015 | British | 57 years |
| Robert Ian Cartwright | Director | 1 Apr 2015 | 25 Feb 2016 | British | 71 years |
| Stephen Leslie Ray | Director | 23 Jan 2008 | 29 Jan 2010 | British | 53 years |