| Alan Campbell Ritchie | Director | 5 Jul 2007 | 14 Oct 2009 | British | 59 years |
| Alexander George Bremner | Director | 15 Feb 2008 | 4 Feb 2011 | British | 72 years |
| Alison Groat | Director | 1 Dec 2023 | 6 Feb 2025 | British | 46 years |
| Allan Duncan King | Director | 19 Apr 2006 | 14 Sept 2007 | British | 65 years |
| Andrew Peter Lindsay Walls | Director | 25 Oct 2007 | 20 Feb 2009 | British | 58 years |
| Biif Corporate Services Limited | Corporate Director | 21 Apr 2011 | 4 Feb 2016 | United Kingdom | - |
| Daniel Marinus Maria Vermeer | Director | 15 Dec 2017 | 21 Nov 2022 | Dutch | 45 years |
| David Fulton Gilmour | Director | 21 Apr 2011 | 4 Nov 2021 | British | 63 years |
| David Niall Smith | Director | 1 Apr 2015 | 1 Dec 2023 | British | 55 years |
| Dentons Secretaries Limited | Corporate Secretary | 27 Oct 2017 | 4 Jan 2024 | United Kingdom | - |
| Duncan Henderson Ogilvie | Director | 19 Apr 2006 | 31 Dec 2009 | British | 60 years |
| Duncan Henderson Ogilvie | Director | 31 May 2013 | 1 Apr 2015 | British | 60 years |
| Dylan Fletcher | Director | 27 Feb 2006 | 6 Nov 2007 | British | 55 years |
| Glenn Fraser Whyte Allison | Director | 14 Sept 2007 | 15 Feb 2008 | British | 70 years |
| Glenn Sinclair Pearce | Director | 13 Nov 2024 | 7 Aug 2025 | British | 54 years |
| Jan Karen Love | Director | 19 Apr 2006 | 25 Oct 2007 | British | 54 years |
| John Christian Elliot | Director | 19 Apr 2006 | 5 Jul 2007 | British | 74 years |
| John Ivor Cavill | Director | 4 Feb 2016 | 8 May 2024 | British | 54 years |
| John Wrinn | Director | 4 Nov 2021 | 2 Feb 2023 | British | 64 years |
| Kirsty O'brien | Director | 17 Apr 2020 | 13 Nov 2024 | British | 44 years |
| Maclay Murray & Spens Llp | Corporate Nominee Secretary | 29 Sept 2005 | 27 Oct 2017 | United Kingdom | - |
| Richard James Thompson | Director | 20 Dec 2012 | 15 Dec 2017 | British | 43 years |
| Ronald Gilfillan Jack | Director | 6 Nov 2007 | 31 Mar 2015 | British | 71 years |
| Ronald Gilfillan Jack | Director | 1 Apr 2015 | 17 Apr 2020 | British | 71 years |
| Steven Harry Tolson | Director | 12 Feb 2010 | 31 May 2013 | British | 71 years |
| Stuart Charles Oag | Director | 15 Feb 2008 | 20 Dec 2012 | British | 54 years |
| Victoria Bradley | Director | 14 Oct 2009 | 21 Apr 2011 | British | 55 years |
| Vindex Limited | Corporate Nominee Director | 29 Sept 2005 | 27 Feb 2006 | United Kingdom | - |
| Vindex Services Limited | Corporate Nominee Director | 29 Sept 2005 | 27 Feb 2006 | United Kingdom | - |
