| A G Secretarial Limited | Corporate Secretary | 15 Mar 2004 | 31 Mar 2007 | United Kingdom | - |
| Adrian John Lawton-wallace | Director | 1 Apr 2014 | 22 Sept 2016 | British | 55 years |
| Alasdair Liddell | Director | 17 Nov 2005 | 31 Oct 2008 | British | 77 years |
| Caroline Anne Hewitt | Director | 22 Apr 2013 | 21 May 2015 | British | 62 years |
| Charles Denis Lenox Conyngham | Director | 15 Dec 2005 | 1 Dec 2010 | British | 91 years |
| Clive Harry Pitt | Director | 1 Nov 2011 | 23 Jul 2013 | British | 63 years |
| Darrell Boyd | Director | 22 Sept 2016 | 5 Jun 2018 | British | 58 years |
| David William Bowler | Director | 28 Mar 2008 | 25 Mar 2010 | British | 81 years |
| Eugene Martin Prinsloo | Director | 17 Nov 2005 | 1 Dec 2010 | British | 55 years |
| Fulcrum Infrastructure Management Limited | Corporate Secretary | 14 May 2007 | 1 Aug 2019 | United Kingdom | - |
| Geoffrey Price | Director | 17 Dec 2009 | 17 Dec 2009 | British | 69 years |
| Graham Michael Spence | Director | 23 Apr 2014 | 12 Nov 2014 | British | 65 years |
| Humphrey Kenneth Haslam Claxton | Director | 1 Dec 2010 | 1 May 2013 | British | 80 years |
| Ian Booth | Director | 24 Jan 2008 | 1 Dec 2010 | British | 77 years |
| Ian Mark Willett | Director | 16 Aug 2022 | 4 Mar 2024 | British | 47 years |
| Inhoco Formations Limited | Corporate Nominee Director | 15 Mar 2004 | 16 Jul 2004 | United Kingdom | - |
| James Stuart Thomson | Director | 16 Jul 2004 | 28 Mar 2008 | British | 52 years |
| Jamie Russell Andrews | Director | 18 Jun 2015 | 7 Aug 2017 | British | 56 years |
| Jamie Russell Andrews | Director | 6 Jun 2018 | 6 May 2022 | British | 56 years |
| John Frederick Whitehead | Director | 5 Jun 2018 | 30 Nov 2018 | British | 62 years |
| Kevin Barton | Director | 17 Nov 2005 | 23 Oct 2008 | British | 69 years |
| Malcolm John Hines | Director | 24 Jan 2008 | 1 Dec 2010 | British | 68 years |
| Mark Andrew Pears | Director | 17 Nov 2005 | 14 May 2007 | British | 64 years |
| Nafees Arif | Director | 25 Mar 2010 | 1 Nov 2011 | British | 53 years |
| Neil Terence Mcelduff | Director | 1 Dec 2010 | 6 Mar 2015 | British | 65 years |
| Nicola Ann Theron | Director | 23 Jul 2014 | 18 Jun 2015 | British | 64 years |
| Oliver David Hannan | Director | 1 May 2019 | 6 May 2022 | British | 53 years |
| Paul Andrew Eyres | Director | 28 Jun 2007 | 28 Jun 2007 | British | 63 years |
| Paul Martin Brickell | Director | 28 Sept 2006 | 31 Oct 2010 | British | 69 years |
| Philippa Dawn Robinson | Director | 6 May 2022 | 22 Nov 2024 | New Zealander | 71 years |
| Richard Mark Ashcroft | Director | 25 Mar 2010 | 20 May 2015 | British | 59 years |
| Simon Christopher Waters | Director | 22 Nov 2024 | 17 Jun 2025 | British | 54 years |
| Sylvie Pierce | Director | 17 Nov 2005 | 25 Mar 2010 | British | 78 years |
| Tom Dobrashian | Director | 7 Aug 2017 | 6 Jun 2018 | British | 63 years |