| Angela Jayne Willetts | Director | 16 May 2016 | 9 Aug 2019 | British | 65 years |
| Barry John Wakefield | Secretary | 17 Apr 2003 | 14 Feb 2005 | British | - |
| Burness (directors) Limited | Corporate Nominee Director | 10 Feb 2000 | 23 Feb 2000 | United Kingdom | - |
| Burness Solicitors | Corporate Nominee Secretary | 10 Feb 2000 | 23 Feb 2000 | - | - |
| Christopher William Shea | Director | 10 Jan 2005 | 14 Feb 2005 | British | 72 years |
| David Joseph Bagley | Secretary | 14 Feb 2005 | 5 Aug 2008 | British | - |
| David Mark Holland Huyton | Director | 28 Dec 2004 | 14 Feb 2005 | British | 66 years |
| Georgios Georgiou | Director | 26 Feb 2013 | 16 May 2016 | Cypriot | 54 years |
| Huw Thompson | Secretary | 5 Aug 2008 | 1 Dec 2008 | British | - |
| John Mccrory | Director | 23 Feb 2000 | 28 Dec 2004 | British | 78 years |
| John Mccrory | Secretary | 23 Feb 2000 | 17 Apr 2003 | British | - |
| Kathrin Lichtner | Director | 14 Feb 2005 | 15 Jan 2013 | German | 59 years |
| Laurence Richard O'connell | Director | 28 Dec 2004 | 14 Feb 2005 | British | 68 years |
| Mark Anthony Drugan | Director | 7 Sept 2011 | 31 Mar 2017 | British | 62 years |
| Olav Rolf Koenig | Director | 11 Jan 2005 | 7 Sept 2011 | German | 59 years |
| Paul Michael Whitney | Director | 23 Feb 2000 | 28 Dec 2004 | British | 78 years |
| Paul Vernon Wright | Director | 28 Dec 2004 | 14 Feb 2005 | British | 72 years |
| Paul Wood | Director | 1 Jul 2024 | 30 Sept 2025 | Scottish | 49 years |
| Ronald Janusz Heath | Director | 31 Mar 2017 | 30 Jun 2024 | British | 75 years |
| Simon Richard Eaves | Director | 16 May 2016 | 6 Mar 2023 | Welsh | 59 years |
| Stefan Ammann | Director | 14 Feb 2005 | 26 Feb 2013 | Swiss | 58 years |
| William John Gripton | Director | 26 Feb 2013 | 16 May 2016 | British | 77 years |
