| Andrew Michael Pratt | Director | 23 Jul 2007 | 31 Dec 2010 | British | 76 years |
| Andrew Rolland Cunningham | Director | 5 Sept 2003 | 31 Dec 2015 | British | 70 years |
| Antony Lewis Pierce | Director | 4 Jul 2016 | 12 Jul 2016 | British | 50 years |
| Brian Aidan Crumbley | Director | 5 Sept 2003 | 30 Sept 2005 | British | 68 years |
| Debra Rachel Yudolph | Director | 19 Jan 2005 | 19 Dec 2008 | British | 62 years |
| Geoffrey Joseph Davis | Director | 5 Sept 2003 | 2 Nov 2006 | British | 69 years |
| Geoffrey Joseph Davis | Secretary | 5 Sept 2003 | 1 Oct 2003 | British | - |
| Helen Christine Gordon | Director | 31 Dec 2015 | 6 Mar 2019 | British | 67 years |
| Marie Louise Glanville | Secretary | 1 Oct 2003 | 22 Dec 2008 | English | - |
| Mark Greenwood | Director | 7 Dec 2010 | 22 Dec 2015 | British | 67 years |
| Mark Jeremy Robson | Director | 20 Jan 2005 | 6 Mar 2019 | British | 67 years |
| Michael Patrick Windle | Secretary | 18 Dec 2008 | 4 Mar 2016 | British | - |
| Nicholas Mark Fletcher Jopling | Director | 7 Dec 2010 | 20 Dec 2017 | British | 65 years |
| Nicholas Peter On | Director | 23 Jan 2009 | 30 Sept 2016 | British | 63 years |
| Paul Trevor Barber | Director | 25 Oct 2007 | 12 Jul 2016 | British | 59 years |
| Peter Christopher George Schwerdt | Director | 19 Jan 2005 | 30 Jun 2007 | British | 68 years |
| Peter Quentin Patrick Couch | Director | 17 Jun 2005 | 31 Jan 2014 | British | 68 years |
| Prima Director Limited | Corporate Director | 23 Jul 2003 | 5 Sept 2003 | United Kingdom | - |
| Prima Secretary Limited | Corporate Secretary | 23 Jul 2003 | 5 Sept 2003 | United Kingdom | - |
| Rupert Jerome Dickinson | Director | 5 May 2004 | 20 Oct 2009 | British | 67 years |
| Sean Anthony Slade | Director | 5 May 2004 | 12 Nov 2004 | British | 62 years |