| Alan Baker | Director | 24 Nov 2005 | 11 Mar 2008 | Scottish | 60 years |
| Alexander Hughes Honeyman | Director | 13 Feb 2020 | 31 Dec 2021 | British | 66 years |
| Alexandra Leta Malone | Director | 1 Apr 2022 | 7 Jul 2025 | British | 43 years |
| Annant Shah | Director | 15 Sept 2021 | 24 Jul 2023 | British | 44 years |
| Barry O'regan | Director | 13 Feb 2020 | 1 Apr 2023 | Irish | 49 years |
| Caoimhe Mary Giblin | Director | 28 Jul 2010 | 22 Sept 2014 | Irish | 50 years |
| Crescent Trust Co | Corporate Secretary | 3 Nov 2008 | 2 Dec 2011 | - | - |
| Cypher Services Limited | Corporate Secretary | 6 Feb 2004 | 3 Nov 2008 | United Kingdom | - |
| Daniel Mark Pearson | Director | 21 Mar 2023 | 21 Oct 2025 | British | 50 years |
| David Gardner | Director | 19 Oct 2010 | 12 Oct 2012 | British | 63 years |
| Donal Francis Flynn | Director | 5 Dec 2007 | 28 Jul 2010 | Irish | 53 years |
| Edward O'connor | Director | 12 Mar 2004 | 1 Feb 2008 | Irish | 80 years |
| Elaine Harley | Director | 13 Feb 2020 | 2 Oct 2023 | British | 57 years |
| Finlay Alexander Mccutcheon | Director | 13 Feb 2020 | 31 Dec 2020 | British | 49 years |
| Finlay Alexander Mccutcheon | Director | 1 Apr 2022 | 17 May 2024 | British | 49 years |
| Fraser Mcgregor Alexander | Director | 15 Feb 2008 | 25 Feb 2013 | British | 63 years |
| James Isaac Smith | Director | 29 Sept 2008 | 3 Feb 2015 | British | 64 years |
| James Isaac Smith | Director | 1 Jun 2017 | 1 Feb 2022 | British | 64 years |
| Jennifer Ann Ebbage | Director | 6 Feb 2004 | 12 Mar 2004 | British | 60 years |
| Jeremy Williamson | Director | 13 Feb 2020 | 1 Apr 2022 | British | 60 years |
| John Anthony Downes | Director | 13 Feb 2020 | 1 Apr 2022 | British | 56 years |
| John Gillard | Director | 16 Dec 2011 | 27 Apr 2012 | Irish | 46 years |
| Kate Johanna Wallace Lockhart | Director | 3 Mar 2025 | 19 Sept 2025 | British | 35 years |
| Lawrence John Vincent Donnelly | Secretary | 2 Dec 2011 | 1 Dec 2014 | - | - |
| Louis Fitzgerald | Director | 12 Mar 2004 | 15 Feb 2008 | Irish | 78 years |
| Mark Ennis | Director | 24 Nov 2005 | 15 Mar 2013 | British | 70 years |
| Martin Mcadam | Director | 11 Mar 2008 | 31 Jul 2008 | Irish | 65 years |
| Nicola Dwyer | Director | 20 May 2011 | 16 Dec 2011 | Irish | 47 years |
| Paul Cyril Dowling | Director | 29 Sept 2008 | 28 Jan 2011 | Irish | 61 years |
| Paul Gerald Cooley | Director | 3 Feb 2015 | 1 Apr 2023 | Irish | 55 years |
| Paul Richard Smith | Director | 15 Mar 2013 | 31 May 2016 | British | 63 years |
| Sally Fairbairn | Secretary | 1 Dec 2014 | 7 Aug 2019 | - | - |
| Senan Murphy | Director | 18 Aug 2005 | 5 Dec 2007 | Irish | 57 years |
| Simon Murray Heyes | Director | 29 Sept 2008 | 19 Oct 2010 | British | 63 years |
| Stephen Vincent Cross | Director | 6 Feb 2004 | 12 Mar 2004 | British | 58 years |
| Stephen Wheeler | Director | 1 Oct 2010 | 1 Jun 2017 | Irish | 53 years |
| Steve Cowie | Director | 24 Nov 2005 | 5 Jun 2008 | English | 62 years |
