| Alexander Forrest Welsh | Director | 13 Feb 2018 | 21 Sept 2018 | British | 65 years |
| Alexander Neil Ferguson Pirie | Director | 28 Aug 2012 | 6 Dec 2016 | British | 65 years |
| Anna Rowena Evans | Director | 4 Sept 2006 | 1 Jan 2010 | British | 57 years |
| Anna Rowena Evans | Director | 4 Dec 2012 | 22 Aug 2017 | British | 57 years |
| Benjamin Dale | Director | 7 Aug 2013 | 22 Aug 2017 | British | 49 years |
| Catherine Lizbeth Garner | Director | 22 Aug 2017 | 28 Feb 2018 | British | 75 years |
| Colin Kenneth Rae | Director | 5 Dec 2017 | 24 May 2019 | British | 62 years |
| Daniel Dermott Quinn | Director | 14 Jan 2005 | 28 Sept 2010 | British | 89 years |
| David John Shaw | Director | 9 Dec 2014 | 1 Jan 2016 | British | 65 years |
| Donald Cameron Easterbrook Gorrie | Director | 14 Jan 2005 | 30 Nov 2005 | British | 93 years |
| Elizabeth Mary Fairbairn | Director | 14 Jan 2005 | 1 Jan 2010 | British | 88 years |
| Elliott Allan Stiling | Director | 1 Jan 2010 | 9 Dec 2014 | British | 48 years |
| Graham John Waddell | Director | 22 Aug 2017 | 20 Sept 2022 | British | 69 years |
| Heather Claridge | Director | 7 Feb 2024 | 9 Dec 2024 | British | 42 years |
| Jane Griffiths | Director | 14 Jan 2005 | 22 Nov 2005 | British | 83 years |
| John Mctaggart Glover | Director | 14 Jan 2005 | 1 Jan 2010 | British | 91 years |
| Katie Smart | Director | 13 Dec 2023 | 1 Apr 2025 | British | 39 years |
| Kenneth James Fraser | Director | 13 Dec 2023 | 27 Jan 2025 | British | 64 years |
| Kevin Alexander James Anderson | Director | 28 Aug 2012 | 6 Feb 2013 | British | 63 years |
| Neil Thomson Boyes Miller | Director | 28 Sept 2010 | 7 Aug 2013 | British | 61 years |
| Patrick Robert Prenter | Director | 14 Jan 2005 | 22 Nov 2005 | British | 87 years |
| Paula Jane Rice | Director | 21 Sept 2018 | 12 Feb 2020 | British | 55 years |
| Richard Jennings | Director | 1 Jan 2017 | 12 Oct 2020 | British | 52 years |
| Richard Jennings | Secretary | 1 Jan 2017 | 12 Oct 2020 | - | - |
| Roderick Macdonald | Director | 13 Dec 2023 | 27 Oct 2024 | British | 64 years |
| Stephen Oswald | Director | 10 Apr 2018 | 16 Sept 2021 | British | 66 years |
| Susan Deborah Aktemel | Director | 7 Aug 2013 | 23 Aug 2016 | British | 58 years |
| Thomas Christopher Norris | Director | 12 Oct 2020 | 13 Dec 2023 | Scottish | 40 years |
| Thomas Christopher Norris | Secretary | 12 Oct 2020 | 1 Jul 2023 | - | - |
| Thomas Hamilton Clark | Director | 14 Jan 2005 | 25 Nov 2005 | British | 85 years |
| Timothy John Weightman | Director | 1 Jan 2016 | 13 Dec 2023 | British | 55 years |
| William Alister Steele | Director | 1 Jan 2010 | 1 Jan 2017 | British | 69 years |
| William Alister Steele | Secretary | 14 Jan 2005 | 1 Jan 2017 | British | - |
| William Jeffrey Stoddart | Director | 14 Jan 2005 | 1 Jan 2010 | British | 91 years |
| William Mcgrouther Lockhart | Director | 21 Aug 2019 | 13 Dec 2023 | British | 63 years |
