| Aidan Joseph Connolly | Director | 23 Jul 2010 | 31 Dec 2011 | British | 69 years |
| Alan Gilpin | Director | 1 Jan 2012 | 19 Mar 2014 | British | 53 years |
| Andrew Paul Burton | Director | 23 Jul 2010 | 4 Nov 2015 | British | 57 years |
| Ian Raymond Edwards | Director | 23 Jul 2010 | 1 Jun 2022 | British | 65 years |
| Jean Mary Renton | Director | 1 Nov 2019 | 1 Nov 2019 | British | 58 years |
| John Craig Hunter | Director | 22 Jul 2010 | 23 Jul 2010 | British | 65 years |
| Justin David Hopwood | Director | 6 Mar 2020 | 20 Apr 2023 | British | 52 years |
| Laurent Paul Joseph Arnaudo | Director | 3 May 2017 | 1 Nov 2019 | French | 59 years |
| Laurent Paul Joseph Arnaudo | Director | 1 Nov 2019 | 6 Mar 2020 | French | 59 years |
| Michael Alan Burton | Director | 23 Jul 2010 | 19 May 2011 | British | 81 years |
| Michael James Goodwin | Director | 8 Feb 2017 | 20 Apr 2023 | British | 41 years |
| Philip Richard Andrew | Director | 1 Jan 2012 | 28 Mar 2013 | British | 55 years |
| Robert Matthew Parnell | Director | 6 Jul 2022 | 20 Apr 2023 | British | 55 years |
| Simon Robert Charles Jefford | Director | 23 Jul 2010 | 31 Jul 2021 | British | 65 years |