| Adrian Roger Wyatt | Director | 28 Jun 2010 | 25 May 2012 | British | 77 years |
| Alexander Edward Compton Hare | Director | 15 Aug 2017 | 14 Sept 2021 | British | 40 years |
| Angus Alexander Dodd | Director | 27 Jun 2016 | 15 Aug 2017 | British | 58 years |
| James Michael Edward Saunders | Director | 31 Mar 2015 | 15 Aug 2017 | British | 59 years |
| Maxwell David Shaw James | Director | 5 Jul 2011 | 27 Jun 2016 | British | 58 years |
| Nicholas Simon Keith Shattock | Director | 28 Jun 2010 | 24 Mar 2011 | British | 66 years |
| Rebecca Jane Worthington | Director | 28 Jun 2010 | 31 Oct 2012 | British | 54 years |
| Richard James Stearn | Director | 1 Aug 2012 | 31 Mar 2015 | British | 57 years |
| Sandra Judith Odell | Secretary | 1 Jan 2013 | 5 Oct 2016 | - | - |
| Simon Andrew Tatford | Director | 15 Aug 2017 | 23 Jun 2022 | British | 47 years |
| Simon Geoffrey Carter | Director | 26 May 2015 | 13 Jan 2017 | British | 50 years |
| Susan Elizabeth Dixon | Secretary | 28 Jun 2010 | 1 Jan 2013 | - | - |