| Alexander Forbes Davidson | Director | 30 Nov 1989 | 26 Apr 2003 | British | 99 years |
| Burness Paull Llp | Corporate Secretary | 30 Oct 2015 | 28 May 2020 | United Kingdom | - |
| Dennis Watson Watt | Director | 1 May 2003 | 28 Jun 2019 | British | 75 years |
| Francis Dominic Fairlie | Director | 30 May 1996 | 28 May 2020 | British | 68 years |
| Gillian Nancy Fairlie | Director | 13 Jan 1989 | 30 Nov 1989 | British | - |
| Hms Secretaries Limited | Corporate Secretary | 22 Jul 2020 | 29 Feb 2024 | United Kingdom | - |
| Ian F Roberts & Bain | Corporate Secretary | 13 Jan 1989 | 30 Nov 1989 | - | - |
| James And George Collie | Corporate Secretary | 30 Nov 1989 | 1 Aug 1995 | - | - |
| Lawrence Brian Milne | Director | 5 Feb 1990 | 26 Apr 2003 | British | 80 years |
| Michael John Taylor | Director | 5 Feb 1990 | 26 May 2011 | British | 80 years |
| Michael Luigi Peter Zanre | Director | 2 Apr 1990 | 28 May 2020 | British | 79 years |
| Michael Luigi Peter Zanre | Secretary | 1 Aug 1995 | 30 Oct 2015 | British | - |
| Ronald Davidson | Director | 30 Nov 1989 | 26 Apr 2003 | British | 93 years |
| Stephen Burnett | Director | 5 Feb 1990 | 3 May 2011 | British | 76 years |
| Valerie Margaret Leeming | Director | 13 Jan 1989 | 30 Nov 1989 | British | - |
| William Henry Bruce | Director | 13 Jan 1989 | 25 Nov 2019 | British | 93 years |
| William Lind Macleod | Director | 30 Sept 1993 | 28 May 2020 | British | 77 years |
| William Martin Bruce | Director | 14 Jun 1991 | 31 Dec 2022 | British | 62 years |
