| Charles Eugene Shackleton Strickland | Secretary | 23 Sept 2015 | 30 Jun 2020 | - | - |
| David Evison | Director | 9 Apr 2018 | 30 Nov 2022 | British | 62 years |
| Desmond John Davidson | Director | 6 Sept 1966 | 28 Feb 2002 | British | 85 years |
| George Watson | Secretary | 6 Sept 1966 | 2 May 2006 | British | - |
| Jenny Nancy Loncaster | Secretary | 2 May 2006 | 20 Nov 2013 | - | - |
| Joanna Carolyn Richardson | Director | 3 Jan 2007 | 27 Feb 2008 | British | 57 years |
| John Sloan Martin | Director | 6 Sept 1966 | 15 Jan 2007 | British | 83 years |
| Jonathan Paul Barrett | Secretary | 20 Nov 2013 | 23 Sept 2015 | - | - |
| Neil Joseph Dodds | Secretary | 30 Jun 2020 | 31 Aug 2024 | - | - |
| Neil Jowsey | Director | 20 Nov 2013 | 9 Apr 2018 | British | 62 years |
| Nicholas Alexander Cyril Hildyard | Director | 10 Mar 2008 | 20 Nov 2013 | British | 72 years |
| Thomas Gordon Martin | Director | 1 Mar 2002 | 9 Jun 2008 | British | 62 years |
| William Irwin Graham Miller | Director | 6 Sept 1966 | 31 Jan 1999 | British | 87 years |
