| Aci Directors Limited | Corporate Nominee Director | 1 Dec 2003 | 23 Jan 2004 | United Kingdom | - |
| Aci Secretaries Limited | Corporate Nominee Secretary | 1 Dec 2003 | 23 Jan 2004 | United Kingdom | - |
| David James Beament | Director | 24 Apr 2006 | 30 Mar 2007 | British | 69 years |
| Elizabeth Anne Jackson | Director | 1 Apr 2010 | 1 Mar 2012 | British | 73 years |
| Geoffrey John Booth | Director | 23 Jan 2004 | 31 Mar 2006 | British | 69 years |
| Harriet Grace Kemp | Director | 27 Jul 2009 | 31 Mar 2010 | British | 64 years |
| Matthew Sinnott | Director | 15 Jan 2018 | 13 May 2022 | British | 54 years |
| Michelle Blayney | Director | 5 Nov 2020 | 21 Dec 2021 | British | 57 years |
| Paul Christopher Farley | Director | 16 Jun 2005 | 31 May 2009 | British | 62 years |
| Paul Jonathan Hucknall | Director | 1 Mar 2012 | 31 Dec 2017 | British | 54 years |
| Stephen John Hopkins | Secretary | 23 Jan 2004 | 28 Feb 2010 | British | - |
| Timothy Michael Dobree Wilson | Director | 23 Jan 2004 | 4 Apr 2005 | British | 76 years |