| Alan Cecil Hogg | Director | 13 Apr 2005 | 28 Jan 2010 | British | 72 years |
| Alan Lee Rasmussen | Director | 13 Apr 2005 | 2 Mar 2007 | American | 72 years |
| Charles Nicholas Brown | Director | 30 Jan 2009 | 28 Jul 2012 | British | 79 years |
| David Mcgregor | Director | 13 Apr 2005 | 6 Oct 2008 | British | 74 years |
| David Mcgregor | Secretary | 7 Mar 2001 | 13 Apr 2005 | British | - |
| Derek Stuart Blackwood | Director | 13 Apr 2005 | 31 Dec 2012 | British | 72 years |
| Graham Rodney Levett-prinsep | Director | 13 Apr 2005 | 30 Jan 2009 | American | 78 years |
| Iain Smith & Company | Corporate Nominee Secretary | 9 Aug 1991 | 9 Aug 1991 | - | - |
| Ian James Murray | Director | 15 Sept 1988 | 7 Mar 2001 | British | 79 years |
| Ian Johnson | Secretary | 13 Apr 2005 | 1 Sept 2010 | British | - |
| Ian Sclater Joy | Director | 13 Apr 2005 | 30 Jan 2009 | United Kingdom | 68 years |
| Ivan Andrew Mather | Director | 15 Sept 1988 | 31 Dec 1989 | British | - |
| James Thomas Casher | Director | 15 Sept 1988 | 31 May 2009 | British | 82 years |
| James Thomas Casher | Secretary | 15 Sept 1988 | 7 Mar 2001 | British | - |
| Kathleen Lesley Anne Glass | Director | 30 Jan 2009 | 31 Dec 2012 | British | 51 years |
| Mark William Docherty | Director | 28 Jul 2012 | 17 Oct 2014 | British | 65 years |
| Robert Muirhead Birnie Brown | Secretary | 1 Sept 2010 | 18 Dec 2015 | - | - |
| William Cochrane | Director | 10 May 2010 | 31 Dec 2012 | British | 70 years |