| Catherine Anne Newton O'kelly | Director | 17 Sept 2021 | 26 Sept 2025 | British | 42 years |
| Charles Lee Mcleod | Director | 30 Jun 2021 | 4 Nov 2022 | British | 54 years |
| Christopher Adam Ling | Director | 11 Dec 2013 | 10 Oct 2016 | British | 52 years |
| Christopher Phillip Anthony Weston | Director | 11 Dec 2013 | 30 Dec 2014 | British | 62 years |
| Gab Saturnio Barbaro | Director | 10 Oct 2016 | 31 Aug 2020 | Italian | 55 years |
| Gregory Craig Mckenna | Director | 8 Mar 2021 | 3 Jun 2024 | British | 60 years |
| Ivan Edward Ronald | Director | 24 Jan 2018 | 5 Jul 2019 | British | 54 years |
| Jorge Pablo Pikunic | Director | 24 Jul 2020 | 8 Mar 2021 | British | 50 years |
| Justine Michelle Campbell | Director | 11 Dec 2013 | 27 Apr 2017 | British | 56 years |
| Lavan Rubasingham | Director | 11 Dec 2013 | 19 Feb 2016 | British | 55 years |
| Lindsay Ronald Pearson | Director | 11 Dec 2013 | 10 Oct 2016 | British | 52 years |
| Mark Steven Hodges | Director | 10 Oct 2016 | 28 Feb 2019 | British | 61 years |
| Michael David Kirwan | Director | 1 Apr 2019 | 31 Aug 2020 | Irish | 55 years |
| Michael Robin Uzielli | Director | 11 Dec 2013 | 31 May 2015 | British | 56 years |
| Peter Michael Martin-simon | Director | 24 Jul 2020 | 17 Sept 2021 | British | 51 years |
| Sarah Elizabeth Mussenden | Director | 1 Jul 2019 | 30 Jun 2021 | British | 61 years |
| Sarwjit Sambhi | Director | 10 Oct 2016 | 11 Jun 2020 | British | 57 years |
| Steven John Buck | Director | 31 May 2015 | 24 Jan 2018 | British | 57 years |
| Stuart Craig Dee | Director | 12 Oct 2015 | 20 Oct 2017 | British | 54 years |
