| Adam George Waddington | Director | 22 Aug 2011 | 18 Apr 2013 | British | 51 years |
| Alistair John Handford | Director | 14 Dec 2006 | 18 Mar 2020 | British | 74 years |
| Alnery Incorporations No 1 Limited | Corporate Nominee Director | 27 Apr 2006 | 28 Nov 2006 | - | - |
| Alnery Incorporations No 1 Limited | Corporate Nominee Secretary | 27 Apr 2006 | 28 Nov 2006 | - | - |
| Alnery Incorporations No 2 Limited | Corporate Nominee Director | 27 Apr 2006 | 28 Nov 2006 | - | - |
| Asif Ghafoor | Director | 6 Mar 2007 | 5 Jun 2007 | British | 55 years |
| Asif Ghafoor | Director | 22 Aug 2013 | 1 Mar 2017 | British | 55 years |
| Benjamin Matthew Cashin | Director | 11 Jul 2008 | 11 Aug 2011 | British | 53 years |
| Christopher Francis Chapman | Director | 5 Nov 2019 | 8 Mar 2023 | English | 58 years |
| Christopher Joseph Kinsella | Director | 14 Mar 2023 | 12 Jan 2024 | British | 69 years |
| Christopher Victor Fenton | Director | 6 May 2007 | 30 May 2008 | British | 63 years |
| Cindy Peek | Director | 9 Feb 2009 | 31 Mar 2015 | British | 73 years |
| Daniel Colin Ward | Director | 10 Apr 2020 | 18 Dec 2020 | British | 43 years |
| Daniel Colin Ward | Director | 18 Dec 2020 | 30 Apr 2025 | British | 43 years |
| David Boyd Lindsey | Director | 14 Dec 2006 | 11 Jul 2008 | British | 66 years |
| Gary William Mills | Director | 9 Sept 2008 | 10 Aug 2020 | British | 69 years |
| Ian Smart | Director | 25 Nov 2011 | 31 Mar 2015 | British | 60 years |
| Ian Smart | Director | 31 Mar 2015 | 31 Jan 2017 | British | 60 years |
| James Alexander Spencer Withey | Director | 10 Oct 2011 | 29 Oct 2012 | British | 51 years |
| Joanne Marie Hyde | Director | 24 Sept 2018 | 5 Nov 2019 | British | 55 years |
| Johanna Elizabeth Miller | Director | 15 Jun 2007 | 1 Oct 2007 | British | 58 years |
| John Gerard Connelly | Director | 12 Jul 2010 | 7 Mar 2022 | British | 65 years |
| John Pilkington | Director | 28 Nov 2006 | 30 May 2008 | British | 76 years |
| Katherine Anne Louise Pearman | Director | 1 Mar 2017 | 7 Mar 2022 | British | 64 years |
| Keith Cottrell | Director | 28 Nov 2006 | 30 Jun 2013 | British | 70 years |
| Marium Gulshan Haque | Director | 8 Feb 2019 | 5 Nov 2019 | British | 52 years |
| Marium Gulshan Haque | Director | 5 Nov 2019 | 8 Mar 2023 | British | 52 years |
| Marium Gulshan Haque | Director | 14 Mar 2023 | 12 Jan 2024 | British | 52 years |
| Martin Channon | Director | 5 Jun 2007 | 4 Apr 2011 | British | 68 years |
| Matthew James Cooper | Director | 1 Oct 2007 | 5 Aug 2008 | British | 53 years |
| Michael Peter Jameson | Director | 31 Jan 2017 | 29 Jan 2018 | British | 64 years |
| Michael Peter Jameson | Director | 26 Mar 2018 | 24 Sept 2018 | British | 64 years |
| Michael Peter Jameson | Director | 24 Sept 2018 | 8 Feb 2019 | British | 64 years |
| Morton Bruce Corbitt | Director | 14 Dec 2006 | 9 Sept 2008 | British | 77 years |
| Nicholas Andrew Sharman | Director | 10 Jun 2008 | 31 Mar 2010 | British | 78 years |
| Nicholas James Mackee | Director | 20 May 2013 | 18 Dec 2020 | British | 49 years |
| Nick Stuart English | Director | 22 Aug 2011 | 1 Aug 2012 | British | 65 years |
| Parveen Akhtar | Director | 26 Mar 2018 | 24 Sept 2018 | British | 47 years |
| Peter Miles Richardson | Director | 21 Sept 2009 | 31 Mar 2010 | British | 71 years |
| Peter Miles Richardson | Director | 13 Jul 2010 | 10 Oct 2011 | British | 71 years |
| Sherard Secretariat Services Limited | Corporate Secretary | 28 Nov 2006 | 23 Mar 2022 | United Kingdom | - |
| Stuart Mckinnon-evans | Director | 31 Jan 2017 | 29 Jan 2018 | British | 63 years |
| Susan Anne Elizabeth Mawson | Director | 14 Dec 2006 | 14 Oct 2011 | British | 71 years |
| Susan Heather Charlotte Brand | Director | 4 Apr 2011 | 10 Jun 2013 | British | 70 years |
| Terence Kevin Davis | Director | 31 Mar 2015 | 31 Jan 2017 | British | 67 years |