| Andrew William Mulvaney | Director | 17 Feb 2003 | 7 Oct 2005 | British | 56 years |
| Ankur Dhingra | Director | 18 Aug 2022 | 2 Apr 2024 | American | 50 years |
| Anthony Weir | Director | 17 Nov 2008 | 23 Mar 2009 | British | 65 years |
| Anthony Weir | Secretary | 17 Nov 2008 | 23 Mar 2009 | British | - |
| Barry John Price | Director | 18 Jan 2011 | 4 Apr 2012 | British | 82 years |
| Campbell Hair | Director | 6 Dec 2021 | 10 Aug 2022 | British | 63 years |
| Darren Michael Millington | Director | 9 May 2006 | 19 Sept 2008 | British | 49 years |
| Darren Michael Millington | Secretary | 6 Jun 2005 | 19 Sept 2008 | British | - |
| David Jonathan Powell | Director | 29 Jan 2021 | 26 Nov 2021 | Irish | 57 years |
| David Robert Norwood | Director | 17 Feb 2003 | 31 Jan 2008 | British | 57 years |
| Glyn Owain Edwards | Director | 4 Apr 2012 | 5 Jun 2020 | British | 70 years |
| Hale And Dorr Secretaries Limited | Corporate Secretary | 14 Jan 2003 | 8 Mar 2004 | - | - |
| Hugh Feargal O'neill | Secretary | 30 Jun 2020 | 8 Jun 2021 | - | - |
| James Christopher Taylor | Director | 9 Aug 2006 | 31 Jan 2008 | British | 64 years |
| Jeffrey Maranian | Director | 6 Dec 2021 | 21 Jan 2022 | American | 44 years |
| John Alexander Montgomery | Director | 17 Feb 2003 | 26 Sept 2006 | British | 82 years |
| John Alexander Montgomery | Secretary | 8 Mar 2004 | 6 Jun 2005 | British | - |
| Melissa Claire Strange | Secretary | 17 Oct 2016 | 30 Jun 2020 | - | - |
| Richard Storer | Director | 26 Apr 2006 | 21 Nov 2012 | British | 78 years |
| Robert William Duggan | Director | 5 Jun 2020 | 5 Jun 2020 | American | 81 years |
| Sharon Jeen Benning Prince | Secretary | 19 Sept 2008 | 17 Nov 2008 | British | - |
| Stephen Graham Davies | Director | 17 Feb 2003 | 28 Feb 2013 | British | 75 years |
| Steven Koon Ching Lee | Director | 28 Apr 2003 | 3 Dec 2010 | British | 59 years |
| Ventzislav Kirilov Stefanov | Director | 27 May 2020 | 4 Dec 2020 | Bulgarian | 58 years |
| Ventzislav Kirilov Stefanov | Director | 5 Jun 2020 | 5 Jun 2020 | Bulgarian | 58 years |
| Wcphd Directors Limited | Corporate Director | 14 Jan 2003 | 17 Feb 2003 | United Kingdom | - |
