| Andrew Gordon Webster | Director | 6 Feb 1995 | 31 Dec 2001 | British | 81 years |
| Andrew Gordon Webster | Director | 5 Oct 2004 | 3 Sept 2007 | British | 81 years |
| Andrew Lonie | Director | 4 Apr 2022 | 30 Nov 2022 | British | 61 years |
| Blackadders Solicitors | Corporate Secretary | 9 Jan 1995 | 6 Feb 1995 | - | - |
| Brian George Tasker | Director | 6 Feb 1995 | 6 Jun 2008 | British | 77 years |
| Bruce William Henry | Director | 3 Sept 2007 | 21 Jan 2010 | British | 93 years |
| Burness Paull Llp | Corporate Secretary | 30 Oct 2015 | 28 May 2020 | United Kingdom | - |
| Dennis Watson Watt | Director | 1 Jul 2013 | 28 Jun 2019 | British | 75 years |
| Derrick Raymond Thomson | Director | 4 Jun 2008 | 30 Sept 2015 | British | 63 years |
| Douglas William Gunstone | Secretary | 6 Feb 1995 | 9 Aug 1998 | British | - |
| Francis Dominic Fairlie | Director | 4 Jun 2008 | 28 May 2020 | British | 68 years |
| Graham Reid | Director | 4 May 2021 | 31 Jul 2025 | Scottish | 45 years |
| Hms Secretaries Limited | Corporate Secretary | 22 Jul 2020 | 29 Feb 2024 | United Kingdom | - |
| James Clarke Graham Johnston | Director | 1 May 1999 | 6 Jun 2008 | British | 79 years |
| James Clarke Graham Johnston | Secretary | 10 Aug 1998 | 6 Jun 2008 | British | - |
| Johnston Peter Campbell Clark | Director | 9 Jan 1995 | 6 Feb 1995 | British | 64 years |
| Joyce Harley Webster | Director | 6 Feb 1995 | 3 Sept 2007 | British | 80 years |
| Michael Luigi Peter Zanre | Secretary | 6 Jun 2008 | 30 Oct 2015 | British | - |
| Michael Luigi Zanre | Director | 3 Sept 2007 | 28 May 2020 | British | 79 years |
| Patrick Joseph Boyle | Director | 4 Apr 2022 | 18 Sept 2023 | Irish | 53 years |
| Roy Smith Dryburgh | Director | 6 Feb 1995 | 6 Jun 2008 | British | 69 years |
| William Martin Bruce | Director | 24 Aug 2016 | 31 Dec 2022 | British | 62 years |
