| Alan James Cullens | Director | 1 Jul 2014 | 15 Jun 2022 | British | 63 years |
| Alun Hughes Griffiths | Director | 11 Jun 2003 | 30 Jul 2014 | British | 72 years |
| Amanda Jane Emilia Massie | Director | 25 Feb 1998 | 28 Mar 2002 | British | 56 years |
| Amanda Jane Emilia Massie | Secretary | 25 Feb 1998 | 3 Nov 1999 | British | - |
| Amanda Jane Emilia Massie | Secretary | 29 Nov 1999 | 15 Sept 2004 | British | - |
| Clifford Chance Secretaries Limited | Corporate Nominee Secretary | 12 Jan 1998 | 25 Feb 1998 | United Kingdom | - |
| David John Pett | Director | 31 Oct 2006 | 30 Nov 2008 | British | 70 years |
| Edward Arthur Burleigh | Director | 25 Feb 1998 | 27 Sept 2011 | British | 80 years |
| Heath Stewart Drewett | Director | 27 Sept 2017 | 15 Dec 2017 | British | 60 years |
| Helen Alice Baker | Secretary | 1 Jan 2008 | 4 Nov 2016 | British | - |
| Irene Margaret Wood | Director | 27 Sept 2011 | 27 Sept 2017 | British | 75 years |
| Jonathan Frank Evans | Director | 1 Jun 2011 | 30 Nov 2014 | British | 66 years |
| Katie Charmian David | Secretary | 5 Aug 2002 | 4 Nov 2002 | British | - |
| Kevin George Thompson | Director | 24 Jun 2005 | 31 Oct 2006 | British | 68 years |
| Mark Stephen Anderson | Director | 27 Sept 2017 | 17 May 2021 | British | 61 years |
| Martin Edgar Richards | Nominee Director | 12 Jan 1998 | 25 Feb 1998 | British | 83 years |
| Nigel William Reid | Director | 15 Dec 2008 | 1 Jun 2011 | British | 72 years |
| Paul Nicholas Randall | Director | 1 Dec 2014 | 27 Sept 2017 | British | 66 years |
| Peter John Charlton | Nominee Director | 12 Jan 1998 | 25 Feb 1998 | British | 71 years |
| Philip Stephen James Davis | Secretary | 9 May 2005 | 30 Sept 2007 | British | - |
| Richard Howarth Tomalin | Director | 25 Feb 1998 | 28 Mar 2002 | British | 82 years |
| Richard Howarth Tomalin | Secretary | 3 Nov 1999 | 29 Nov 1999 | British | - |
| Richard John Piper | Director | 25 Feb 1998 | 1 Oct 2002 | British | 74 years |
| Richard Webster | Secretary | 4 Nov 2002 | 31 Aug 2017 | British | - |
| Robin Thomas Tremaine | Director | 9 Mar 1998 | 31 Oct 2006 | British | 70 years |
| Stephen Robert Billingham | Director | 1 Oct 2002 | 11 Jun 2003 | British | 68 years |
| Victoria Elizabeth Hames | Secretary | 15 Sept 2004 | 3 Jan 2005 | British | - |