| Alan Mcquade | Director | 23 Jan 2019 | 8 Mar 2024 | British | 45 years |
| Alastair Crofts Gibb | Secretary | 6 Dec 1996 | 27 Aug 1998 | British | - |
| Alexander Hall Bruce | Director | 10 May 2001 | 4 Jul 2008 | British | 87 years |
| Andrew Bruce | Director | 22 Dec 2014 | 22 Dec 2016 | British | 68 years |
| Blackwood Partners Llp | Corporate Secretary | 18 Dec 2015 | 6 Dec 2016 | - | - |
| D.w. Company Services Limited | Corporate Secretary | 30 Jan 2017 | 25 Oct 2019 | United Kingdom | - |
| Gordon Davidson | Secretary | 8 Aug 2011 | 30 Nov 2015 | - | - |
| Graham Birnie | Director | 1 Jul 2002 | 28 Feb 2010 | British | 78 years |
| Iain Wolstenholme | Secretary | 4 Jul 2011 | 8 Aug 2011 | - | - |
| John Lewis Langler | Director | 28 Aug 1992 | 1 Jun 2009 | British | 77 years |
| John Robertson Kennedy Brothcie | Director | 23 Jun 2008 | 31 May 2013 | British | 65 years |
| Ledingham Chalmers Llp | Corporate Secretary | 27 Aug 1998 | 31 Mar 2006 | United Kingdom | - |
| Macandrew & Company | Corporate Secretary | 28 Aug 1992 | 30 Nov 1995 | - | - |
| Mark Ritchie | Director | 8 Dec 2016 | 23 Nov 2018 | British | 47 years |
| Maurice Mcbride | Director | 20 Sept 2021 | 5 May 2022 | British | 72 years |
| Md Secretaries Limited | Corporate Nominee Secretary | 1 Apr 2006 | 1 Jun 2009 | United Kingdom | - |
| Messrs Raeburn Christie Clark & Wallace | Corporate Secretary | 1 Jun 2009 | 4 Jul 2011 | United Kingdom | - |
| Roger Alexander Esson | Director | 14 Oct 2013 | 31 Dec 2015 | British | 52 years |
| Simon Richard Frost | Director | 18 Aug 2008 | 22 Dec 2016 | British | 70 years |
| William George Rennie | Director | 1 Jun 2009 | 22 Dec 2014 | British | 60 years |
| William George Rennie | Director | 9 Dec 2019 | 1 Sept 2021 | British | 60 years |
| William John Bayliss | Director | 8 Dec 2016 | 9 Dec 2019 | British | 64 years |
