| Alexander Brian Cooper Short | Director | 1 Jan 2015 | 4 Jul 2016 | British | 59 years |
| Barrie Mason Jackson | Director | 1 Jun 1989 | 31 May 2005 | British | 71 years |
| Ian Barrett Curle | Director | 18 May 2006 | 1 Jan 2015 | British | 65 years |
| John Alexander Rose Macphail | Director | 1 Jun 1989 | 31 Dec 1993 | British | 103 years |
| John Campbell Dunlop | Director | 1 Jun 1989 | 31 Oct 1993 | British | 92 years |
| John Campbell Dunlop | Secretary | 1 Jun 1989 | 1 May 1993 | British | - |
| John James Griffen Good | Director | 1 Jun 1989 | 18 May 2006 | British | 83 years |
| Martin Alexander Cooke | Director | 18 May 2006 | 1 Sept 2020 | British | 65 years |
| Martin Alexander Cooke | Secretary | 1 May 1993 | 1 Sept 2020 | British | - |
| Richard Jackson Arrol Hunter | Director | 1 Jun 1989 | 1 Jul 2014 | British | 71 years |