| Alistair Graham Ray | Director | 5 Feb 2019 | 27 Mar 2020 | British | 52 years |
| Alistair John Dormer | Director | 31 Jan 2012 | 3 Apr 2018 | British | 63 years |
| Andrew Stephen Pearson | Director | 26 Jul 2012 | 5 Feb 2019 | British | 62 years |
| Andrew Thomas Barr | Director | 26 Jul 2012 | 29 Jan 2016 | British | 53 years |
| Anh Khoa Nguyen | Director | 22 May 2018 | 15 Nov 2019 | British,vietnamese | 37 years |
| Barbara Jane Moorhouse | Director | 9 Oct 2015 | 18 Dec 2018 | British | 68 years |
| David Michael Hardy | Director | 26 Oct 2017 | 18 May 2018 | British | 69 years |
| Gregor Scott Jackson | Director | 5 Feb 2019 | 30 Sept 2020 | British | 52 years |
| Hidetoshi Miura | Director | 26 Jul 2012 | 17 Apr 2015 | Japanese | 52 years |
| Hiroaki Odajima | Director | 30 Apr 2019 | 25 May 2023 | Japanese | 66 years |
| Jacobus Marinus Commandeur | Director | 3 Apr 2018 | 18 Dec 2018 | Dutch | 66 years |
| Jamie Pritchard | Director | 26 Jan 2018 | 5 Feb 2019 | British | 55 years |
| Jamie Pritchard | Director | 30 Sept 2020 | 4 Apr 2023 | British | 55 years |
| Jane Aine Mee | Director | 29 Jan 2016 | 6 Nov 2020 | British | 61 years |
| Keith William Jordan | Director | 26 Jul 2012 | 19 Nov 2015 | British | 74 years |
| Mark John Westbrook | Director | 31 Jan 2012 | 26 Oct 2017 | Australian | 58 years |
| Mark Roy Swindell | Director | 18 Dec 2018 | 1 Mar 2023 | British | 66 years |
| Michael Edward Binnington | Director | 27 Mar 2020 | 25 Sept 2025 | British | 59 years |
| Montgomery Peter Garrett Clarke | Director | 24 Jul 2024 | 9 Oct 2025 | British | 29 years |
| Thomas Hawkesworth | Director | 6 Nov 2020 | 30 Jan 2025 | British | 39 years |
| Yojiro Sakata | Director | 25 May 2023 | 30 Apr 2024 | Japanese | 39 years |
| Yusuke Fukaya | Director | 19 Nov 2015 | 30 Apr 2019 | Japanese | 44 years |