| Adrian Ross Thomas Marsh | Director | 21 Feb 2011 | 23 Sept 2013 | British | 60 years |
| Alexander David Jablonowski | Director | 10 Nov 2015 | 11 Jul 2016 | British | 53 years |
| Amit Soni | Director | 21 Nov 2016 | 14 Oct 2022 | Indian | 58 years |
| Andrew David Yaxley | Director | 27 Jul 2018 | 24 Oct 2022 | British | 59 years |
| Ashwin Prasad | Director | 28 Oct 2022 | 16 Jun 2025 | New Zealander | 50 years |
| Christopher John Robinson | Director | 8 Nov 2013 | 10 Nov 2015 | British | 57 years |
| David Alexander Reddoch Berry | Director | 10 Nov 2015 | 20 Jun 2022 | British | 54 years |
| David Wayne Surdeau | Director | 6 Nov 2014 | 18 Sept 2015 | British | 70 years |
| George Gordon Wright | Director | 8 May 2017 | 23 Aug 2018 | British | 60 years |
| Glen Attewell | Director | 18 Oct 2011 | 14 Mar 2014 | British | 67 years |
| Helen O'keefe | Secretary | 21 Jan 2011 | 15 Oct 2013 | - | - |
| James Liddon Mario Padovan | Director | 14 Mar 2014 | 10 Nov 2015 | British | 60 years |
| Jamie Ross Walker | Director | 21 Feb 2013 | 10 Nov 2015 | British | 58 years |
| Jason Mark Tarry | Director | 6 Nov 2014 | 16 Jul 2018 | British | 59 years |
| Jerzy Glinka | Director | 18 Oct 2011 | 6 Nov 2014 | Polish | 71 years |
| Joanne Wilson | Director | 6 Nov 2014 | 11 May 2015 | Irish | 51 years |
| John Campbell Scouler | Director | 18 Oct 2011 | 4 Dec 2014 | British | 58 years |
| Jonathan Mark Lloyd | Director | 21 Jan 2011 | 6 Nov 2014 | British | 60 years |
| Kay Elizabeth Majid | Director | 24 Apr 2013 | 10 Nov 2015 | British | 51 years |
| Lucy Jeanne Neville-rolfe | Director | 21 Jan 2011 | 2 Jan 2013 | British | 73 years |
| Martin John Field | Director | 6 Nov 2014 | 10 Nov 2015 | British | 66 years |
| Matthew James Simister | Director | 16 Feb 2011 | 1 Apr 2017 | British | 53 years |
| Shubhi Suryaji Rao | Director | 30 Mar 2015 | 10 Nov 2015 | American | 60 years |
| Stephanie Wood | Director | 30 Jan 2019 | 14 May 2022 | British | 43 years |
