| Aiden Charles Barwick Clegg | Director | 19 Dec 2018 | 30 Nov 2021 | British | 60 years |
| Andrew James Clark | Director | 20 Sept 2022 | 28 Jan 2025 | British | 48 years |
| Andrew James Mark Lewis Bracey | Director | 19 Dec 2018 | 30 Nov 2021 | British | 59 years |
| Carl Robert Hayward | Director | 1 Jul 2020 | 11 Feb 2021 | British | 45 years |
| John Gordon Firth | Director | 11 Jan 2019 | 27 Apr 2020 | British | 61 years |
| Luke Taylor Creighton | Director | 11 Feb 2021 | 1 Jul 2022 | British | 47 years |
| Michael Christopher Dennis | Director | 7 Dec 2018 | 28 Feb 2019 | British | 50 years |
| Neil Allen Currie | Director | 19 Dec 2018 | 30 Nov 2021 | British | 61 years |
| Peter John Churchus | Director | 11 Jan 2019 | 1 Sept 2020 | British | 72 years |