| Andrew Hampden Hobart | Director | 9 Feb 2011 | 14 May 2012 | British | 64 years |
| Birse Group Services Limited | Corporate Secretary | 26 Mar 2004 | 22 Sept 2004 | United Kingdom | - |
| Declan John Tierney | Secretary | 21 Dec 2007 | 9 Sept 2011 | British | - |
| Hammonds Directors Limited | Corporate Nominee Director | 15 Mar 2004 | 26 Mar 2004 | - | - |
| Hammonds Secretaries Limited | Corporate Nominee Secretary | 15 Mar 2004 | 26 Mar 2004 | - | - |
| John Stanley Marlor | Director | 21 Dec 2007 | 8 Jun 2009 | British | 77 years |
| Kevin David Craven | Director | 21 Dec 2007 | 12 Dec 2013 | British | 65 years |
| Louise Williamson | Director | 26 Mar 2004 | 21 Dec 2007 | British | 62 years |
| Mark Gallacher | Director | 1 Jan 2016 | 10 Jan 2018 | British | 47 years |
| Melanie Allan | Secretary | 13 Jan 2012 | 12 Dec 2013 | - | - |
| Nicholas James Wargent | Secretary | 1 Aug 2011 | 13 Jan 2012 | - | - |
| Richard John Blumberger | Director | 15 Jan 2009 | 31 Jan 2016 | British | 51 years |
| Simone Tudor | Secretary | 12 Dec 2013 | 5 Jan 2015 | - | - |
| Terry Colin Woodhouse | Director | 14 May 2012 | 19 Aug 2014 | British | 62 years |
| Wendy Caroline Ellis | Secretary | 22 Sept 2004 | 21 Dec 2007 | British | - |
| Wilfrid John Petrie | Director | 12 Dec 2013 | 15 Dec 2014 | French | 61 years |