| Andrew Rolland Cunningham | Director | 1 Sept 2005 | 31 Dec 2015 | British | 70 years |
| David Alexander Smith | Director | 22 Feb 2010 | 20 Dec 2016 | British | 67 years |
| Helen Christine Gordon | Director | 31 Dec 2015 | 6 Mar 2019 | British | 67 years |
| Marie Louise Glanville | Director | 30 Aug 2006 | 18 Dec 2008 | English | 52 years |
| Marie Louise Glanville | Secretary | 1 Sept 2005 | 22 Dec 2008 | English | - |
| Mark Greenwood | Director | 6 Dec 2010 | 22 Dec 2015 | British | 67 years |
| Michael Patrick Windle | Secretary | 18 Dec 2008 | 4 Mar 2016 | British | - |
| Nicholas Mark Fletcher Jopling | Director | 6 Dec 2010 | 20 Dec 2017 | British | 65 years |
| Nicholas Peter On | Director | 23 Jan 2009 | 30 Sept 2016 | British | 63 years |
| Peter Quentin Patrick Couch | Director | 6 Dec 2010 | 31 Jan 2014 | British | 68 years |
| Prima Director Limited | Corporate Director | 27 Jul 2005 | 1 Sept 2005 | United Kingdom | - |
| Prima Secretary Limited | Corporate Secretary | 27 Jul 2005 | 1 Sept 2005 | United Kingdom | - |
| Rupert Jerome Dickinson | Director | 1 Sept 2005 | 20 Oct 2009 | British | 67 years |