| Aci Directors Limited | Corporate Nominee Director | 17 Dec 2003 | 17 Dec 2003 | United Kingdom | - |
| Aci Secretaries Limited | Corporate Nominee Secretary | 17 Dec 2003 | 17 Dec 2003 | United Kingdom | - |
| Deborah Jude Nolan | Secretary | 5 Sept 2013 | 12 Jan 2015 | - | - |
| Michael Robert Sergeant | Director | 22 Aug 2005 | 31 Mar 2012 | British | 64 years |
| Michael Robert Sergeant | Secretary | 17 Dec 2003 | 12 Sept 2007 | British | - |
| Nicholas Charles David Craig | Secretary | 14 Jan 2015 | 6 Mar 2015 | - | - |
| Paul Barry Stevens | Secretary | 12 Sept 2007 | 2 Sept 2013 | British | - |
| Sinead Isobel Patton | Director | 5 Oct 2016 | 1 Feb 2017 | Irish | 51 years |
| Steven John Guttridge | Director | 17 Dec 2003 | 31 Dec 2016 | British | 71 years |