| Alan Cunningham Mclaren | Director | 4 Feb 1998 | 6 Apr 2000 | British | 66 years |
| Alan Maitland Dewar Mcwilliam | Director | 12 Jul 1988 | 30 Jun 1994 | British | 73 years |
| Alexander Thomson | Director | 12 Jul 1988 | 30 Jun 1996 | British | 93 years |
| Biggart Baillie | Corporate Nominee Secretary | 12 Jul 1988 | 8 Aug 2007 | - | - |
| Biggart Baillie & Gifford Ws | Corporate Nominee Secretary | 12 Jul 1988 | 12 Jul 1988 | - | - |
| Biggart Baillie Llp | Corporate Secretary | 8 Aug 2007 | 14 Aug 2012 | United Kingdom | - |
| Christopher John Noel | Director | 21 Nov 2018 | 31 Aug 2023 | British | 45 years |
| Colin Beaton Mckay | Director | 4 Feb 1998 | 23 Mar 1999 | British | 63 years |
| David Craib Hinshaw Ross | Director | 4 Feb 1998 | 14 Jul 2009 | British | 78 years |
| David Hamilton Kidd | Director | 15 May 1996 | 23 Aug 2010 | British | 77 years |
| David Stewart Allan | Director | 10 Oct 1995 | 16 Jun 2010 | British | 67 years |
| Derek George Mcnicoll Ellery | Director | 4 Feb 1998 | 14 Jun 2019 | British | 65 years |
| Gordon Malcolm Wyllie | Director | 12 Jul 1988 | 5 Jul 2012 | British | 75 years |
| Graeme Alistair Kelly | Director | 15 Aug 2000 | 16 Jan 2014 | British | 64 years |
| Hugh Joseph Lorraine Allan | Director | 12 Jul 1988 | 28 Nov 1997 | British | 91 years |
| Iain James Scott Talman | Director | 24 Aug 2010 | 29 Apr 2016 | British | 74 years |
| Ian Temple Johnstone | Director | 12 Jul 1988 | 10 Oct 1991 | British | 103 years |
| James Craig Szerdy | Director | 17 Aug 2023 | 19 Apr 2024 | American | 62 years |
| James Crawford Mclintock | Director | 12 Jul 1988 | 10 Oct 1991 | British | - |
| John Harold Mutch | Director | 12 Jul 1988 | 1 Jul 1994 | British | 93 years |
| John Robin Bryson Corbett | Director | 4 Jul 1994 | 19 Feb 2015 | British | 71 years |
| Jon Gould | Director | 6 Apr 2017 | 1 Feb 2024 | British | 44 years |
| Murray William Anderson Shaw | Director | 16 Sept 2009 | 13 Dec 2013 | British | 69 years |
| Norman Robert Oliver | Director | 4 Jul 1994 | 11 Jul 1996 | British | 74 years |
| Paul Andrew Brown | Director | 17 Aug 2023 | 10 Sept 2025 | British | 67 years |
| Paul Richard Davies | Director | 18 Feb 2015 | 20 Nov 2018 | British | 54 years |
| Roderick Iain Duncan Anderson | Director | 12 Jul 1988 | 31 Dec 2003 | British | 83 years |
| Thomas Norman Biggart | Director | 12 Jul 1988 | 30 Jun 1995 | British | 96 years |
| William Wilson Campbell Smith | Director | 4 Jul 1994 | 30 Jun 2009 | British | 80 years |