| Angus John Kennedy | Director | 28 Oct 2009 | 31 Dec 2010 | British | 74 years |
| Ann Catherine Pursey | Director | 1 Jan 2011 | 30 Apr 2015 | British | 62 years |
| Ewan Forsyth | Director | 30 Jun 2022 | 21 Jul 2025 | British | 57 years |
| James Bawn | Director | 22 Nov 2023 | 22 May 2024 | British | 50 years |
| James Christopher Heath | Director | 1 Nov 2018 | 15 Nov 2022 | British | 51 years |
| John Ronald Taylor | Director | 28 Oct 2009 | 7 Mar 2023 | English | 76 years |
| Jonathan Tringham | Director | 23 Sept 2009 | 18 Apr 2011 | British | 58 years |
| Julian Edward John Keyte | Director | 1 Aug 2010 | 30 Jun 2022 | British | 64 years |
| Mark William Grinonneau | Director | 17 Jun 2015 | 22 Nov 2023 | British | 56 years |
| Matthew Stephen Dyer | Director | 28 Jun 2010 | 15 Dec 2015 | British | 55 years |
| Paul Bailey Sherriff | Director | 13 Oct 2014 | 17 Jun 2021 | British | 55 years |
| Peter Wharton | Director | 11 Sept 2009 | 30 Jun 2010 | British | 63 years |
| Rachel Hardy | Director | 1 Feb 2010 | 26 Oct 2010 | British | 59 years |
| Rachel Hardy | Director | 18 Apr 2011 | 31 Mar 2013 | British | 59 years |
| Rachel Louise Turnbull | Director | 8 Nov 2017 | 31 Oct 2018 | British | 48 years |
| Richard Gareth Emery Williams | Director | 10 Oct 2007 | 1 Mar 2020 | British | 62 years |
| Richard Gareth Emery Williams | Secretary | 10 Oct 2007 | 4 Nov 2020 | British | - |
| Richard Handley L'anson Laing | Director | 10 Oct 2007 | 28 Jul 2016 | British | 59 years |
| Ross William Driver | Director | 28 Jul 2016 | 8 Nov 2017 | British | 45 years |
| Sarah Anne Raper | Director | 28 Sept 2010 | 15 Oct 2013 | British | 62 years |
| Simon John Barnes | Director | 15 Oct 2013 | 17 Jun 2015 | British | 58 years |
