| Abigail Jane Dunning | Director | 11 Nov 2021 | 15 Feb 2022 | British | 51 years |
| Andrew James Gray Thomson | Director | 2 Dec 2008 | 19 Mar 2014 | British | 59 years |
| Andrew John Berger-north | Director | 2 Dec 2008 | 7 Aug 2020 | British | 65 years |
| David John Atkins | Director | 2 Dec 2008 | 1 Oct 2009 | British | 60 years |
| Dominic Martin Etienne Page | Director | 15 Feb 2022 | 31 May 2023 | British | 58 years |
| Lawrence Francis Hutchings | Director | 2 Dec 2008 | 29 Aug 2012 | British | 60 years |
| Mark Richard Bourgeois | Director | 17 Mar 2017 | 11 Nov 2021 | British | 58 years |
| Martin Clive Jepson | Director | 2 Dec 2008 | 31 Jul 2011 | British | 64 years |
| Martin Plocica | Director | 22 Jul 2014 | 17 Mar 2017 | American | 64 years |
| Nicholas Alan Scott Hardie | Director | 2 Dec 2008 | 14 Oct 2011 | British | 71 years |
| Paul Justin Denby | Director | 11 Nov 2021 | 28 Apr 2023 | British | 55 years |
| Peter Frank Cooper | Director | 22 Jul 2014 | 30 Apr 2019 | British | 63 years |
| Peter William Beaumont Cole | Director | 2 Dec 2008 | 30 Apr 2019 | British | 67 years |
| Simon Charles Travis | Director | 30 Apr 2019 | 7 Aug 2025 | British | 57 years |
| Stuart John Haydon | Secretary | 2 Dec 2008 | 22 Sept 2011 | British | - |
| Thomas Cochrane | Director | 7 Aug 2020 | 19 May 2021 | British | 44 years |