| Alan Campbell Ritchie | Director | 14 Dec 2009 | 9 Nov 2011 | British | 59 years |
| Andrew Andreou | Director | 16 Aug 2004 | 30 Jun 2008 | British | 67 years |
| Angeliki Maria Exakoustidou | Director | 26 Sept 2022 | 7 Nov 2022 | Greek | 35 years |
| Anthony Charles Roper | Director | 9 Nov 2011 | 2 Nov 2017 | British | 66 years |
| Brian Mervyn Semple | Director | 30 Jun 2008 | 26 Aug 2009 | British | 80 years |
| Bruce Warren Dalgleish | Director | 19 Jun 2009 | 26 Aug 2009 | British | 59 years |
| Bruce Warren Dalgleish | Director | 14 Dec 2009 | 9 Nov 2011 | British | 59 years |
| Christopher Mark David Gill | Director | 31 Jul 2020 | 1 Jul 2024 | British | 41 years |
| Craig Smailes | Director | 19 Jul 2006 | 16 Jul 2008 | British | 64 years |
| David Alexander John Foot | Director | 15 May 2020 | 25 Apr 2022 | British | 58 years |
| David Honeyman | Director | 1 Dec 2005 | 29 Sept 2006 | British | 59 years |
| David Martin Hedge | Secretary | 31 May 2007 | 22 Apr 2009 | British | - |
| Elena Giorgiana Wegener | Director | 31 Oct 2018 | 31 Jan 2019 | British | 51 years |
| Gary David Simpson | Director | 7 Aug 2013 | 8 May 2015 | British | 71 years |
| Geoffrey Alan Quaife | Director | 9 Nov 2011 | 30 Jan 2012 | British | 71 years |
| Geoffrey Paul Walters | Secretary | 16 Aug 2004 | 31 May 2007 | British | - |
| Graeme Doctor | Director | 16 Jul 2008 | 9 Nov 2011 | British | 69 years |
| Graeme Doctor | Director | 30 Jan 2018 | 31 Jul 2020 | British | 69 years |
| Iain Alton Wallace | Director | 9 Nov 2011 | 7 Aug 2013 | British | 68 years |
| Iain Alton Wallace | Director | 8 May 2015 | 3 Jun 2019 | British | 68 years |
| Ian John Skinmore | Director | 21 Oct 2005 | 30 Mar 2006 | British | 55 years |
| Ian Robert Whitehouse | Director | 9 Nov 2004 | 30 Nov 2005 | British | 74 years |
| Jayne Cheadle | Secretary | 22 Apr 2009 | 8 Oct 2025 | British | - |
| John Joseph Barrett | Director | 16 Jan 2007 | 30 Jun 2008 | English | 59 years |
| Julian Mark Rudd-jones | Director | 16 Aug 2004 | 9 Nov 2011 | British | 71 years |
| Kevin Humphreys | Director | 30 Jun 2008 | 12 Jan 2009 | British | 63 years |
| Mark Christopher Wayment | Director | 9 Nov 2011 | 31 Jul 2012 | British | 68 years |
| Mark Geoffrey David Holden | Director | 31 Jul 2012 | 16 Mar 2023 | British | 69 years |
| Morton Bruce Corbitt | Director | 16 Aug 2004 | 28 Sept 2005 | British | 78 years |
| Natalia Poupard | Director | 31 Jan 2019 | 1 Nov 2019 | British | 49 years |
| Noburo Aokoi | Director | 16 Aug 2004 | 16 Dec 2004 | Japanese | 70 years |
| Paul Mcculloch | Director | 19 Jun 2009 | 14 Dec 2009 | British | 61 years |
| Paul Noake | Director | 16 Dec 2004 | 21 Dec 2004 | British | 68 years |
| Pinsent Masons Director Limited | Corporate Director | 27 Jul 2004 | 16 Aug 2004 | United Kingdom | - |
| Pinsent Masons Secretarial Limited | Corporate Secretary | 27 Jul 2004 | 16 Aug 2004 | United Kingdom | - |
| Rachel Louise Turnbull | Director | 2 Nov 2017 | 31 Oct 2018 | British | 48 years |
| Robert James Newton | Director | 30 Jan 2012 | 14 Feb 2014 | British | 70 years |
| Roger Albert Coomber | Director | 29 Sept 2006 | 16 Jan 2007 | British | 75 years |
| Ross William Driver | Director | 14 Feb 2014 | 15 May 2020 | British | 45 years |