| Alan George Sheppard | Director | 20 Jul 2001 | 14 Dec 2004 | British | 72 years |
| Charles Fraser Norris | Secretary | 14 Jul 1998 | 5 Oct 2001 | British | - |
| Charles Fraser Norris | Secretary | 14 Dec 2004 | 12 Sept 2014 | British | - |
| Christopher Gordon Reynolds | Secretary | 5 Oct 2001 | 14 Dec 2004 | British | - |
| Fiona Puleston Penhallurick | Director | 27 Aug 2015 | 15 Mar 2016 | British | 59 years |
| Ian Matthews | Director | 14 Jul 1998 | 7 Dec 2000 | British | 83 years |
| James Robert Brown Jamieson | Director | 14 Jul 1998 | 30 Jun 1999 | British | 84 years |
| John Anderson Steel Hillhouse | Director | 14 Jul 1998 | 23 Aug 2001 | British | 89 years |
| John Christopher Barritt | Director | 7 Dec 2000 | 20 Jul 2001 | British | 79 years |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 12 Sept 2014 | 27 Aug 2015 | United Kingdom | - |
| Md Secretaries Limited | Corporate Nominee Director | 21 Apr 1998 | 14 Jul 1998 | United Kingdom | - |
| Md Secretaries Limited | Corporate Nominee Secretary | 21 Apr 1998 | 14 Jul 1998 | United Kingdom | - |
| Michael John Choules | Director | 12 Sept 2014 | 9 Apr 2021 | British | 66 years |
| Richard John Wood | Director | 9 Apr 2021 | 30 Sept 2022 | British | 54 years |
| Roy Giovanni Battista Di Duca | Director | 7 Dec 2000 | 12 Sept 2014 | British | 72 years |
| Ruth Sarah Button | Director | 30 Sept 2022 | 1 Oct 2025 | British | 42 years |
| Steve Anson | Director | 1 Mar 2004 | 30 Sept 2004 | British | 61 years |