| Andrew Taylor | Director | 31 May 2015 | 26 Oct 2015 | British | 53 years |
| Bruno Michel Dupety | Director | 30 Sept 2014 | 31 Mar 2020 | French | 70 years |
| David John Finch | Director | 17 Apr 2013 | 19 Jan 2016 | British | 63 years |
| David William Bowler | Director | 20 Dec 2012 | 7 Feb 2018 | British | 81 years |
| Gilles Bruno Marie Godard | Director | 16 Jul 2020 | 30 Sept 2022 | French | 58 years |
| Graham Lambert | Director | 25 Feb 2019 | 8 Jul 2025 | British | 57 years |
| Ian David Hudson | Director | 10 Jan 2019 | 25 Feb 2019 | British | 62 years |
| Jean-pierre Bonnet | Director | 19 Jan 2016 | 10 Jan 2019 | French | 70 years |
| John Oliver Mark Stanion | Director | 4 Jan 2013 | 29 Sept 2014 | British | 74 years |
| Mark Christopher Allan | Director | 1 Dec 2016 | 13 Apr 2020 | British | 54 years |
| Michael Edward Dunn | Director | 20 Dec 2012 | 31 May 2015 | British | 58 years |
| Modwen Corporate Services Limited | Corporate Secretary | 20 Dec 2012 | 5 Dec 2024 | United Kingdom | - |
| Philip Alexander Robins | Director | 9 Apr 2020 | 22 Dec 2020 | British | 48 years |
| Rachel Elizabeth Kentleton | Director | 13 Sept 2021 | 31 Mar 2023 | British | 57 years |
| Robert David Howell Williams | Director | 18 May 2023 | 5 Dec 2024 | British | 56 years |
| Robert Jan Hudson | Director | 26 Oct 2015 | 30 Jul 2021 | British | 53 years |
| Robert John Evans | Director | 1 Aug 2021 | 13 Sept 2021 | British | 53 years |
| Sarwjit Sambhi | Director | 22 Dec 2020 | 4 Dec 2024 | British | 57 years |
| Sharon Ayres | Director | 17 Dec 2012 | 20 Dec 2012 | British | 58 years |
| Stephen James Burke | Director | 17 Dec 2014 | 13 Mar 2017 | British | 67 years |
| Timothy Alex Seddon | Director | 31 Mar 2017 | 7 Feb 2018 | British | 61 years |
| William Alder Oliver | Director | 20 Dec 2012 | 30 Nov 2016 | British | 70 years |