| Andrew Robert Craig Ross | Director | 21 Jan 2016 | 20 Apr 2018 | British | 62 years |
| Charlotte Alexandra Stranner | Director | 12 Oct 2018 | 9 Mar 2021 | British | 47 years |
| David George Templeman | Director | 20 Apr 2021 | 12 Aug 2021 | British | 63 years |
| Julian Gerard Powell Phipps | Director | 21 Jan 2016 | 17 Jul 2018 | British | 60 years |
| Niall Fraser Stirling | Secretary | 3 Jan 2013 | 21 Jan 2016 | - | - |
| Niall Fraser Stirling | Director | 3 Jan 2013 | 21 Jan 2016 | British | 69 years |
| Philip Nicholas Gripton | Director | 1 Dec 2013 | 27 Mar 2015 | British | 57 years |
| Robert Thomas Mark Doughty | Director | 28 Apr 2011 | 19 Jul 2013 | British | 58 years |
| Robert Thomas Mark Doughty | Secretary | 28 Apr 2011 | 3 Jan 2013 | - | - |
| William Dobbie | Director | 28 Apr 2011 | 1 Dec 2013 | British | 67 years |
| William Dobbie | Director | 27 Mar 2015 | 12 Oct 2018 | British | 67 years |