| Adrian Robert Kinkaid | Director | 15 Jun 2015 | 27 Nov 2019 | British | 59 years |
| Alexandra Jacquetta Lindsay | Director | 25 Feb 2022 | 19 Aug 2022 | British | 45 years |
| David Eric Evans | Director | 25 Apr 2018 | 11 Jul 2019 | British | 66 years |
| James Michael Syrotiuk | Director | 30 Jun 2020 | 1 Mar 2021 | British | 41 years |
| Jim Reid | Director | 1 Nov 2016 | 25 Feb 2022 | British | 69 years |
| Mercia Fund Management (nominees) Limited | Corporate Director | 1 Apr 2015 | 28 Sept 2018 | United Kingdom | - |
| Michael Robert Evans | Director | 25 Feb 2022 | 18 Jan 2025 | British | 68 years |
| Michelle Emma Collis | Director | 20 May 2022 | 4 Jul 2024 | British | 50 years |
| Nathan Edward Stuart Heath | Director | 1 Mar 2021 | 26 Mar 2024 | British | 40 years |
| Nicola Ann Broughton | Director | 28 Sept 2018 | 30 Apr 2020 | British | 55 years |
| Richard Lawrence Hamilton Moore | Director | 19 Aug 2022 | 1 Dec 2022 | British | 54 years |
| Sergiy Anatoliyevych Piletsky | Director | 11 Mar 2015 | 24 Jan 2018 | British | 62 years |
| Sharon Rosalie Spencer | Director | 11 Mar 2015 | 24 Jan 2018 | British | 64 years |
| Stephane Francois Frederic Argivier | Director | 30 Apr 2020 | 29 Feb 2024 | French | 52 years |
| William Brooks | Director | 30 Jun 2020 | 19 Feb 2024 | British | 65 years |