| Andrew Mark Stoker | Director | 3 Dec 2014 | 30 Sept 2023 | British | 59 years |
| Antigone Loudiadis | Director | 26 Nov 2013 | 3 Apr 2025 | Greek | 63 years |
| Chad Rustan Pike | Director | 19 Dec 2013 | 20 May 2016 | British | 55 years |
| Charles David Pickup | Director | 26 Nov 2013 | 31 Mar 2024 | British | 70 years |
| Constant Eduard Maria Beckers | Director | 1 Oct 2017 | 1 Oct 2023 | Belgian | 74 years |
| Dermot William Mcdonogh | Director | 26 Nov 2013 | 18 Dec 2017 | Irish | 62 years |
| Douglas Gordon James Paterson | Director | 26 Nov 2013 | 31 Dec 2015 | British | 83 years |
| Gemma Grace Cross | Secretary | 22 Mar 2018 | 18 Jan 2019 | - | - |
| Glenn Peter Jonathan Earle | Director | 1 Jan 2015 | 10 Jan 2018 | British | 68 years |
| Hannah Wilby | Secretary | 29 Aug 2013 | 14 May 2014 | - | - |
| Jacqueline Hunt | Director | 12 Jul 2022 | 30 Apr 2023 | British,new Zealander | 58 years |
| James John Dickson | Secretary | 26 Nov 2013 | 22 Mar 2017 | - | - |
| Jane Carolyn Hanson | Director | 1 Jan 2021 | 30 Jun 2022 | British | 59 years |
| Keith Satchell | Director | 26 Nov 2013 | 30 Mar 2016 | British | 75 years |
| May Quan Elwin Chai | Director | 19 Dec 2013 | 9 Sept 2015 | Singaporean | 46 years |
| Michael Sidney Sherwood | Director | 26 Nov 2013 | 20 May 2016 | British | 61 years |
| Naguib Kheraj | Director | 1 Oct 2014 | 30 Jun 2025 | British | 62 years |
| Ray King | Director | 1 Apr 2014 | 30 Jun 2022 | British | 73 years |
| Richard David Antony Berliand | Director | 1 Oct 2014 | 28 Feb 2019 | British | 64 years |
| Simon Paul Morris | Director | 14 Feb 2019 | 13 Feb 2021 | British | 56 years |
| Syed Qasim Abbas | Director | 19 Dec 2013 | 1 Dec 2020 | British | 50 years |
| Timothy James Grayson | Secretary | 26 Nov 2013 | 14 Mar 2014 | - | - |
| Vinit Nagarajan | Director | 9 Sept 2015 | 20 May 2016 | British | 43 years |
| William Alexander Thomas Gillions | Secretary | 14 May 2014 | 20 Dec 2022 | - | - |
| William John Robertson | Director | 1 Jan 2016 | 30 Sept 2023 | British | 73 years |