| Adam George Waddington | Director | 23 Oct 2014 | 24 Nov 2021 | British | 52 years |
| Andrew Derek Freeman | Director | 17 Nov 2014 | 6 Sept 2018 | British | 48 years |
| Angela Louise Roshier | Director | 19 Oct 2010 | 15 Nov 2011 | British | 51 years |
| Angela Louise Roshier | Director | 16 Jan 2014 | 3 Feb 2021 | British | 51 years |
| Asif Ghafoor | Director | 1 Jul 2013 | 13 Mar 2020 | British | 56 years |
| Asif Ghafoor | Director | 28 Feb 2007 | 5 Oct 2007 | British | 56 years |
| Charles William Grant Herriott | Director | 26 Nov 2015 | 21 Aug 2017 | British | 40 years |
| Christopher Charles Webster | Director | 5 Oct 2007 | 11 Apr 2010 | British | 68 years |
| Declan Vincent Canavan | Director | 5 Oct 2007 | 1 Sept 2010 | Irish | 56 years |
| Declan Vincent Canavan | Director | 1 Sept 2010 | 1 Sept 2010 | Irish | 56 years |
| Eleanor Laura Lipsey | Director | 7 Sept 2011 | 7 Jun 2013 | British | 70 years |
| Engel Johan Roelof Koolhaas | Director | 15 Nov 2011 | 8 Sept 2016 | Dutch | 66 years |
| Erwan Benoit Fournis | Director | 29 Jan 2019 | 31 Dec 2019 | French | 54 years |
| Gerard Anthony Cawley | Director | 28 Feb 2007 | 1 Feb 2012 | Irish | 62 years |
| Helen Mary Murphy | Director | 3 Feb 2021 | 11 Sept 2024 | Irish | 45 years |
| Hugh John Boyle | Director | 30 Sept 2013 | 17 Nov 2014 | Irish | 55 years |
| Iain Rawdon Barbour | Director | 7 Jun 2013 | 30 Sept 2013 | British | 65 years |
| Imagile Secretariat Services Limited | Corporate Secretary | 12 Mar 2015 | 1 Jul 2021 | United Kingdom | - |
| Jack William Woodruff | Director | 24 Nov 2021 | 3 Oct 2022 | British | 33 years |
| Jill Harrower-steele | Director | 24 Apr 2014 | 23 Oct 2014 | British | 49 years |
| John Gerard Connelly | Director | 12 Jul 2010 | 6 Sept 2016 | British | 66 years |
| John Gerard Connelly | Director | 23 Apr 2020 | 7 Mar 2022 | British | 66 years |
| Julian Malcolm St John Deering | Director | 27 Jul 2012 | 17 Nov 2014 | British | 58 years |
| Katherine Anne Louise Pearman | Director | 22 Jun 2018 | 13 Mar 2020 | British | 65 years |
| Keith Cottrell | Director | 28 Feb 2007 | 30 Jun 2013 | British | 71 years |
| Kevin Anthony Lagan | Director | 1 Feb 2013 | 23 Oct 2014 | British | 44 years |
| L&b Secretarial Limited | Corporate Secretary | 28 Feb 2007 | 12 Dec 2007 | - | - |
| Louis Javier Falero | Director | 8 Sept 2016 | 12 Oct 2022 | British | 49 years |
| Mamg Company Secretarial Services Limited | Corporate Secretary | 15 Mar 2015 | 15 Mar 2015 | United Kingdom | - |
| Martin Channon | Director | 20 May 2008 | 4 Apr 2011 | British | 69 years |
| Michael Anthony Lagan | Director | 28 Feb 2007 | 23 Oct 2014 | Irish | 71 years |
| Michael Irving Notman | Director | 6 Feb 2013 | 30 Sept 2013 | British | 64 years |
| Moira Turnbull-fox | Director | 16 Jan 2014 | 7 Jan 2019 | British | 55 years |
| Nadiia Kaznacheieva | Director | 3 Oct 2022 | 6 Jul 2023 | Ukrainian | 47 years |
| Nicholas John Dawson | Director | 5 Oct 2007 | 20 May 2008 | British | 65 years |
| Pario Limited | Corporate Secretary | 18 Feb 2014 | 31 Jan 2015 | United Kingdom | - |
| Paul William Nash | Director | 17 Nov 2014 | 26 Nov 2015 | British | 59 years |
| Peter John Leahy | Director | 6 Sept 2016 | 22 Jun 2018 | British | 68 years |
| Rodney Derek Filshie | Director | 28 Nov 2023 | 6 Mar 2024 | British | 67 years |
| Scott James Martin | Director | 24 Apr 2014 | 23 Oct 2014 | British | 58 years |
| Sherard Secretariat Services Limited | Corporate Secretary | 12 Dec 2007 | 28 Feb 2014 | United Kingdom | - |
| Stephen John Withers | Director | 13 Jul 2010 | 6 Feb 2013 | British | 68 years |
| Stuart Paul David | Director | 7 Sept 2011 | 27 Jul 2012 | British | 63 years |