| David Christopher Harbord | Director | 30 Sept 2016 | 2 Aug 2019 | British | 65 years |
| Graham Ernest Shaw | Director | 29 Nov 2021 | 15 Dec 2021 | British | 76 years |
| Jonathan James Lovell | Director | 2 Aug 2019 | 25 Nov 2021 | British | 33 years |
| Julian Michael Pertwee | Director | 19 Aug 2015 | 30 Sept 2016 | British | 62 years |
| Mark Edward Thistlethwayte | Director | 15 Sept 2015 | 2 Aug 2019 | British | 62 years |
| Michael Alexander Smyth-osbourne | Director | 19 Aug 2015 | 30 Sept 2016 | British | 59 years |
| Paul Lambert | Director | 15 Sept 2015 | 2 Aug 2019 | English | 52 years |
| Richard James Thompson | Director | 2 Aug 2019 | 2 Aug 2019 | British | 43 years |
| Timothy Giles Redpath | Director | 19 Aug 2015 | 30 Sept 2016 | British | 61 years |
| Warren Richard Cann | Director | 15 Sept 2015 | 2 Aug 2019 | British | 55 years |