| Alan Ewing Mills | Secretary | 30 Jan 1992 | 27 Jan 2005 | British | - |
| Alan Sinclair Devine | Director | 17 Mar 2011 | 27 Jan 2016 | British | 65 years |
| Alan Wallace Mckean | Director | 12 Jul 1993 | 18 Aug 1993 | British | 71 years |
| Andrew James Macfie | Director | 6 Apr 2001 | 11 Jun 2004 | British | 69 years |
| Annabel Susan Graham | Secretary | 14 Nov 2005 | 1 Sept 2006 | British | - |
| Brian Buchanan Scouler | Director | 18 Aug 1993 | 25 May 2001 | British | 66 years |
| Carol Lyn Carmichael Edmunds | Director | 13 Dec 2006 | 2 Jul 2007 | South African | 55 years |
| Catriona White | Director | 26 Apr 2019 | 30 Sept 2020 | British | 61 years |
| David Elston | Director | 30 Jan 1992 | 18 Aug 1993 | British | 74 years |
| David Ronald Giffin | Director | 17 Jan 2000 | 31 Oct 2007 | British | 64 years |
| Derek Stephen Sach | Director | 1 Dec 1993 | 31 Mar 1997 | British | 77 years |
| Douglas Grahame Hawkins | Director | 24 Nov 2004 | 16 Jul 2007 | British | 54 years |
| Douglas Richard Kearney | Director | 18 Aug 1993 | 19 Dec 2000 | British | 70 years |
| Eric George William Tough | Director | 30 Jan 1992 | 18 Aug 1993 | British | 68 years |
| Euan Graeme Hamilton | Director | 23 Jan 2008 | 16 Mar 2011 | Scottish | 64 years |
| Guy Howard Cato | Director | 4 Sept 2014 | 8 Nov 2017 | British | 54 years |
| Hamish Robert Muir Mackenzie | Director | 1 Aug 1994 | 31 Mar 1997 | British | 64 years |
| Helen Ann Grimshaw | Director | 27 Jan 2016 | 8 Nov 2017 | British | 50 years |
| Henry William Gregson | Director | 30 Mar 2000 | 17 May 2004 | British | 67 years |
| Iain Leith Johnston Robertson | Director | 23 Jan 2008 | 27 Apr 2009 | British | 73 years |
| Iain Samuel Robertson | Director | 30 Aug 1993 | 19 Dec 2000 | British | 80 years |
| Ian David Beattie | Director | 14 Jan 2002 | 20 Jan 2003 | British | 59 years |
| Ian Mcgillivray | Director | 13 Feb 2003 | 22 Jan 2008 | British | 60 years |
| John Alastair Nigel Cameron | Director | 24 Jun 1999 | 12 Dec 2006 | British | 71 years |
| John Donald Black Workman | Director | 20 Feb 1997 | 12 Dec 2006 | British | 73 years |
| John Donald Black Workman | Director | 23 Jan 2008 | 27 Oct 2011 | British | 73 years |
| John Eamon Dillon | Director | 17 Nov 1998 | 6 Jun 2002 | British | 65 years |
| John Patrick Hourican | Director | 23 Jan 2008 | 4 Jun 2008 | Irish | 55 years |
| Joseph Mcgrane | Director | 18 Aug 1993 | 3 Dec 1999 | British | 71 years |
| Keith Damian Pereira | Director | 8 Nov 2017 | 1 May 2024 | British | 47 years |
| Kennedy Campbell Foster | Director | 12 Jul 1993 | 18 Aug 1993 | British | 75 years |
| Lindsey Mcmurray | Director | 13 Dec 2005 | 22 Jan 2008 | British | 54 years |
| Marcos Castro | Secretary | 1 Sept 2006 | 1 Aug 2008 | Other | - |
| Marina Louise Thomas | Secretary | 28 Jan 2005 | 18 Nov 2005 | British | - |
| Mark Mccracken Bailie | Director | 3 Nov 2003 | 27 Jan 2005 | British | 52 years |
| Mark Patrick Nicholls | Director | 5 Jun 1997 | 31 Mar 2003 | British | 76 years |
| Miller Roy Mclean | Director | 30 Jan 1992 | 18 Aug 1993 | British | 76 years |
| Nicholas Mark Jordan | Director | 23 Jan 2008 | 25 Mar 2011 | British | 65 years |
| Paul Denzil John Sullivan | Director | 24 Feb 2009 | 4 Sept 2014 | British | 59 years |
| Paul Isaacs | Director | 17 Dec 1997 | 5 Sept 2002 | British | 65 years |
| Rachel Elizabeth Fletcher | Secretary | 1 Aug 2008 | 27 Apr 2012 | British | - |
| Rbs Secretarial Services Limited | Corporate Secretary | 27 Apr 2012 | 25 Sept 2019 | United Kingdom | - |
| Robert Dyllan Hook | Director | 27 Jan 2016 | 8 Nov 2017 | British | 55 years |
| Rory Malcolm Cullinan | Director | 13 Feb 2003 | 21 Jul 2004 | British | 66 years |
| Scott Mcfarlane Thomson | Director | 24 Feb 2009 | 18 Nov 2011 | British | 54 years |
| Sean Michael Dinnen | Director | 1 Oct 1998 | 15 Sept 1999 | British | 57 years |
| Simon Antony Peckham | Director | 19 Dec 2000 | 16 Apr 2003 | British | 63 years |
| Simon Jonathan Chrispin | Director | 6 Apr 2001 | 22 Mar 2002 | British | 63 years |
| Stephen Paul Nixon | Director | 8 Nov 2017 | 26 Apr 2019 | British | 55 years |
| Steven Scott | Director | 20 Feb 1997 | 17 Sept 1999 | British | 60 years |
| Stuart William Yates | Director | 1 Oct 1998 | 30 Sept 1999 | British | 58 years |
| Timothy Barham Neville Farazmand | Director | 1 Aug 1994 | 19 Aug 2002 | British | 65 years |
| Timothy John Donald Boag | Director | 23 Jan 2008 | 10 Jun 2008 | British | 61 years |