| Alan George Sheppard | Director | 23 Jan 2003 | 31 Oct 2008 | British | 72 years |
| Andrew Christopher Bolter | Director | 3 Sept 2012 | 4 Apr 2014 | British | 56 years |
| Barbara Kay Ball | Director | 23 Jan 2003 | 25 Feb 2005 | British | 71 years |
| Christopher Nigel Penny | Director | 23 Jan 2003 | 25 Feb 2005 | British | 63 years |
| Deborah Grimason | Director | 28 Jun 2013 | 20 Nov 2013 | British | 63 years |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| James Richard Stirk | Director | 29 Apr 2009 | 14 Dec 2012 | British | 67 years |
| James Richard Stirk | Secretary | 6 Sept 2006 | 30 Nov 2012 | British | - |
| Jeremy Keith Parkes | Secretary | 23 Jan 2003 | 6 Sept 2006 | British | - |
| John Richard Bradshaw | Secretary | 30 Nov 2012 | 29 Jun 2013 | British | - |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 28 Jun 2013 | 27 Aug 2015 | United Kingdom | - |
| Michael John Choules | Director | 27 Aug 2015 | 9 Apr 2021 | British | 66 years |
| Neil Graham Scott Roberts | Director | 23 Jan 2003 | 30 Apr 2009 | British | 67 years |
| Oval Nominees Limited | Corporate Nominee Director | 11 Mar 2002 | 23 Jan 2003 | - | - |
| Ovalsec Limited | Corporate Nominee Director | 11 Mar 2002 | 23 Jan 2003 | - | - |
| Ovalsec Limited | Corporate Nominee Secretary | 11 Mar 2002 | 23 Jan 2003 | - | - |
| Richard John Wood | Director | 9 Apr 2021 | 30 Sept 2022 | British | 54 years |
| Roger Maxwell Penny | Director | 23 Jan 2003 | 25 Feb 2005 | British | 88 years |
| Stephen Alan Ball | Director | 23 Jan 2003 | 25 Feb 2005 | British | 66 years |
| Tarmac Nominees Limited | Corporate Director | 13 Oct 2008 | 29 Jun 2013 | United Kingdom | - |
| Tarmac Nominees Two Limited | Corporate Director | 13 Oct 2008 | 29 Jun 2013 | United Kingdom | - |