| Amanda Miller | Secretary | 2 Nov 2017 | 16 Jan 2023 | - | - |
| Andrew Gordon Trouton | Director | 18 Apr 2018 | 30 Jun 2020 | British | 61 years |
| Andrew John Scaife | Director | 19 Sept 2012 | 1 Dec 2015 | British | 49 years |
| Brian James Fisher | Director | 1 Mar 2017 | 22 Dec 2017 | British | 58 years |
| Christian Alexander Rigg | Director | 8 Mar 2016 | 27 Jan 2017 | British | 51 years |
| Christopher John Mugglestone | Director | 21 Jun 2005 | 1 Jul 2010 | British | 86 years |
| Craig Robert Swinhoe | Secretary | 1 Dec 2015 | 2 Nov 2017 | - | - |
| David Alan Sanson | Director | 1 Mar 2017 | 30 Jun 2021 | British | 66 years |
| Gerard Thomas Murray | Director | 23 Jan 2017 | 2 Nov 2017 | British | 62 years |
| Graham Ronald Thomson | Director | 2 Nov 2017 | 30 Jun 2018 | British | 49 years |
| Julia Carolina Von Samson Himmelstjerna | Director | 1 Aug 2017 | 14 Feb 2022 | German | 41 years |
| Latha Parvataneni | Director | 20 Apr 2016 | 31 Oct 2018 | British | 59 years |
| Margaret Elizabeth Martin | Director | 21 Aug 2012 | 19 Sept 2012 | British | 61 years |
| Martin John Such | Director | 19 Sept 2012 | 8 Mar 2016 | British | 51 years |
| Nicola Jayne Massey | Director | 9 Nov 2015 | 31 Jan 2017 | British | 57 years |
| Scott Robert John Donald | Director | 3 Jan 2017 | 18 Apr 2018 | British | 54 years |
| Simon Paul Raynor | Director | 22 Jun 2011 | 30 Jun 2016 | British | 59 years |
| Simon Paul Raynor | Secretary | 26 Nov 2012 | 1 Dec 2015 | - | - |
| Stephen Jeremy Martin | Director | 21 Jun 2005 | 1 Nov 2017 | Uk | 60 years |
| Stephen Jeremy Martin | Secretary | 21 Jun 2005 | 26 Nov 2012 | Uk | - |
| Thomas Engelen | Director | 1 Sept 2011 | 11 Nov 2016 | Dutch | 67 years |
