| Chris James Wentworth Laxton | Director | 23 May 2012 | 15 Sept 2012 | British | 66 years |
| David Stephen Skinner | Director | 23 May 2012 | 16 Jul 2019 | British | 57 years |
| James Robson Edwin Tarry | Director | 14 Dec 2023 | 30 Jun 2024 | British | 52 years |
| Julian Taylor | Director | 23 May 2012 | 27 Mar 2018 | British | 58 years |
| Laurence Ghislaine Claude Monnier | Director | 13 Apr 2018 | 31 Dec 2021 | British,french | 60 years |
| Lucien Johannes Willibrordus Martinus Jacobs | Director | 19 Oct 2012 | 16 Feb 2016 | Dutch | 61 years |
| Richard John Day | Director | 14 Jul 2022 | 8 Dec 2023 | British | 46 years |
| Ricky Dawson | Director | 14 Oct 2019 | 27 Jun 2022 | British | 56 years |