| Alistair John Dormer | Director | 31 Jan 2012 | 3 Apr 2018 | British | 63 years |
| Andrew Stephen Pearson | Director | 22 Apr 2014 | 28 Sept 2021 | British | 62 years |
| Andrew Thomas Barr | Director | 22 Apr 2014 | 29 Jan 2016 | British | 53 years |
| Barbara Jane Moorhouse | Director | 9 Oct 2015 | 23 Jun 2021 | British | 68 years |
| Hidetoshi Miura | Director | 22 Apr 2014 | 17 Apr 2015 | Japanese | 52 years |
| Isao Hasegawa | Director | 12 Apr 2019 | 11 Jan 2021 | Japanese | 54 years |
| Jacobus Marinus Commandeur | Director | 3 Apr 2018 | 26 Aug 2020 | Dutch | 66 years |
| Jane Aine Mee | Director | 29 Jan 2016 | 6 Nov 2020 | British | 61 years |
| Keith William Jordan | Director | 22 Apr 2014 | 19 Nov 2015 | British | 74 years |
| Kurt Daniel Shuman | Director | 18 Jul 2022 | 23 Jul 2024 | American | 52 years |
| Mark John Westbrook | Director | 31 Jan 2012 | 24 Sept 2018 | Australian | 58 years |
| Michael Edward Binnington | Director | 23 Jun 2021 | 25 Sept 2025 | British | 59 years |
| Montgomery Peter Garrett Clarke | Director | 23 Jul 2024 | 9 Oct 2025 | British | 29 years |
| Nestor Augusto Castillo Borrero | Director | 24 Sept 2018 | 26 Oct 2020 | British | 53 years |
| Pierfrancesco Garimberti | Director | 6 Nov 2020 | 11 Jan 2021 | Italian | 56 years |
| Thomas Hawkesworth | Director | 6 Nov 2020 | 30 Jan 2025 | British | 39 years |
| Yusuke Fukaya | Director | 19 Nov 2015 | 12 Apr 2019 | Japanese | 44 years |