| Bruce Middleton | Director | 4 Dec 2013 | 31 May 2017 | British | 57 years |
| Claus Moller Hjoerringgaard | Director | 31 Mar 2017 | 8 Jun 2018 | Danish | 58 years |
| David Mckenzie Robb | Director | 17 Sept 2013 | 20 Feb 2019 | Scottish | 55 years |
| Ian Adam Irvine | Director | 4 Dec 2013 | 31 Mar 2017 | British | 62 years |
| Robert Alexander Macdonald | Director | 11 Oct 2016 | 31 Jul 2019 | British | 58 years |
| Robert Muirhead Birnie Brown | Secretary | 4 Dec 2013 | 18 Dec 2015 | British | - |
| Stephen John Wayman | Director | 4 Dec 2013 | 11 Oct 2016 | British | 71 years |
| William Edward Leithead | Director | 23 Sept 2013 | 20 Feb 2019 | Scottish | 77 years |