| Ainsley Neelaranjitharajah Chrishan | Director | 15 Apr 2009 | 5 Mar 2013 | British | 51 years |
| Benjamin Jonathan James Walker | Director | 10 Mar 2006 | 8 Nov 2017 | British | 51 years |
| Bryn Mansell Lewis Young | Director | 19 Aug 2013 | 8 Nov 2017 | British | 50 years |
| Claudia Ann Wallace | Director | 28 Oct 2005 | 17 Jan 2006 | Australian | 52 years |
| Gordon Adams | Director | 22 Mar 2006 | 27 Mar 2013 | British | 57 years |
| James Garner Smith Macdonald | Director | 28 Oct 2005 | 14 Sept 2010 | British | 76 years |
| John Paul Nowacki | Director | 30 Nov 2007 | 14 Sept 2010 | British | 47 years |
| John Paul Nowacki | Director | 14 Sept 2010 | 27 Jan 2017 | British | 47 years |
| Jonathan Eden Keighley | Director | 1 Nov 2005 | 30 Oct 2015 | British | 76 years |
| Neil David Townson | Director | 13 Oct 2017 | 31 Aug 2018 | British | 66 years |
| Robert William Berry | Director | 28 Oct 2005 | 27 Jan 2017 | British | 71 years |
| Vinoy Rajanah Nursiah | Director | 14 Sept 2010 | 30 Oct 2015 | British | 53 years |
| Vinoy Rajanah Nursiah | Director | 27 Jan 2017 | 13 Oct 2017 | British | 53 years |