| Alan Campbell Ritchie | Director | 13 Mar 2009 | 14 Oct 2009 | British | 59 years |
| Alan Dean Mawdsley | Director | 15 Oct 1996 | 16 Jun 1999 | Us Citizen | 69 years |
| Andrew David Cowan | Director | 31 Oct 2010 | 9 Nov 2010 | British | 60 years |
| Biif Corporate Services Limited | Corporate Director | 28 Feb 2013 | 26 Sept 2016 | United Kingdom | - |
| Christopher John Brook | Director | 29 Jun 2007 | 9 Apr 2008 | British | 67 years |
| Colin Philip Maloney | Director | 29 Aug 2008 | 15 May 2009 | British | 68 years |
| David Flint | Nominee Director | 4 Oct 1996 | 15 Oct 1996 | British | 71 years |
| David Flint | Nominee Secretary | 4 Oct 1996 | 11 Dec 1996 | British | - |
| David Fulton Gilmour | Director | 27 Jul 2012 | 26 Nov 2021 | British | 63 years |
| David John Kilgour | Director | 16 Jun 2000 | 2 May 2008 | British | 65 years |
| David Leonard Fuller | Director | 14 Sept 2006 | 12 Apr 2007 | British | 66 years |
| David Leonard Fuller | Director | 2 May 2008 | 18 Aug 2008 | British | 66 years |
| Didier Paul-louis Quint | Director | 16 Jun 1999 | 22 Mar 2001 | French | 81 years |
| Duncan John Lucas Bates | Director | 9 Nov 2010 | 23 Dec 2010 | British | 68 years |
| Gordon Arthur Ivan Waters | Director | 14 Jan 1998 | 1 Nov 2001 | British | 79 years |
| Gordon Joseph Martin Tregaskis | Director | 14 Jan 1998 | 16 Jun 2000 | British | 71 years |
| Gordon Ross Clark | Director | 16 Aug 2019 | 31 Mar 2023 | British | 63 years |
| Graham Robinson Keegan | Director | 15 May 2009 | 31 Oct 2010 | British | 68 years |
| Henry Richard Croft | Director | 11 Dec 1996 | 14 Jan 1998 | British | 84 years |
| Ian Dickson | Nominee Director | 4 Oct 1996 | 15 Oct 1996 | British | 76 years |
| John Anthony Barnes | Director | 2 May 2008 | 18 Aug 2008 | British | 72 years |
| John Findlay Mcfadzean | Director | 11 Dec 1996 | 11 Feb 2002 | British | 78 years |
| John Findlay Mcfadzean | Director | 28 Aug 2009 | 1 Nov 2013 | British | 78 years |
| John Morrison | Secretary | 11 Dec 1996 | 18 Feb 2000 | British | - |
| John Wrinn | Director | 26 Nov 2021 | 28 Feb 2024 | British | 64 years |
| Jonathan Clark | Director | 21 Oct 2003 | 14 Sept 2006 | British | 72 years |
| Joseph Marian Geary | Director | 11 Dec 1996 | 16 Jun 1999 | American | 79 years |
| Joseph Michael Martin | Director | 15 Oct 1996 | 1 Aug 2000 | British | 74 years |
| Leslie Anthony Bell | Director | 1 Nov 2001 | 21 Oct 2003 | British | 76 years |
| Leslie Anthony Bell | Director | 15 May 2009 | 9 Nov 2010 | British | 76 years |
| Macroberts (solicitors) | Corporate Secretary | 18 Feb 2000 | 14 Apr 2008 | - | - |
| Malcolm Richard Saunders | Director | 9 Nov 2010 | 5 May 2015 | British | 68 years |
| Martin Frederick Bradbury | Director | 30 Jun 1997 | 30 Jun 1997 | British | 71 years |
| Matthew Reginald Wright | Director | 12 Apr 2007 | 13 May 2008 | British | 61 years |
| Michael John Edwards | Director | 29 Aug 2008 | 15 May 2009 | British | 71 years |
| Nicholas Huson Scott-barrett | Director | 30 Jun 2004 | 9 Jan 2009 | British | 76 years |
| Nigel John Paterson | Director | 5 May 2015 | 16 Aug 2019 | British | 69 years |
| Nigel Stuart Jones | Director | 30 Jun 2004 | 29 Jun 2007 | British | 72 years |
| Nigel Wythen Middleton | Director | 14 Oct 2009 | 18 Feb 2013 | British | 70 years |
| Patrick Raymond Jeantet | Director | 22 Mar 2001 | 30 Jun 2004 | French | 66 years |
| Richard George Bradbury | Director | 15 Oct 1996 | 14 Jan 1998 | British | 75 years |
| Robert Souter Fullerton | Director | 1 Aug 2000 | 11 Feb 2002 | British | 74 years |
| Ronald Gilfillan Jack | Director | 13 Dec 2007 | 18 Sept 2009 | British | 71 years |
| Steven Frank Deatley | Director | 16 Jun 1999 | 30 Jun 2004 | American | 65 years |