| Aci Directors Limited | Corporate Nominee Director | 8 Dec 2005 | 8 Dec 2005 | United Kingdom | - |
| Aci Secretaries Limited | Corporate Secretary | 8 Dec 2005 | 8 Dec 2005 | United Kingdom | - |
| Alison Mary Readman | Secretary | 8 Dec 2005 | 29 May 2009 | British | - |
| Andrew John Parker | Director | 24 Jul 2020 | 31 Jul 2023 | British | 66 years |
| Charles Christian Nicholson | Director | 8 Feb 2006 | 25 Nov 2009 | British | 85 years |
| David Edward Povall | Director | 8 Feb 2006 | 31 Dec 2009 | British | 58 years |
| Euan Hamilton Anstruther -gough -calthorpe Bt | Director | 8 Feb 2006 | 25 Nov 2009 | British | 60 years |
| Graham John Pick | Director | 8 Dec 2005 | 10 Apr 2009 | British | 68 years |
| Joanna Claire Kirk | Director | 13 Feb 2013 | 15 May 2020 | British | 51 years |
| John Richard Allen | Director | 8 Dec 2005 | 30 Sept 2012 | British | 79 years |
| Mark Samuel Wilton Lee | Director | 1 Oct 2009 | 10 Jul 2020 | British | 63 years |
| Mark Samuel Wilton Lee | Secretary | 1 Jun 2009 | 1 Oct 2009 | British | - |
| Martin Brennan Woolhouse | Secretary | 1 Oct 2009 | 23 May 2019 | British | - |
| Michael Thomas Bennett | Secretary | 23 May 2019 | 19 Nov 2021 | - | - |
| Michael William Bunbury | Director | 8 Feb 2006 | 25 Nov 2009 | British | 80 years |
| William Henry George Wilks | Director | 8 Feb 2006 | 25 Nov 2009 | British | 86 years |