| Andrew Christopher Bolter | Director | 28 Mar 2013 | 4 Apr 2014 | British | 56 years |
| Clive Jonathan Mottram | Director | 15 Jun 2009 | 2 Jun 2010 | British | 67 years |
| Clive Jonathan Mottram | Secretary | 19 Jun 2009 | 4 Jan 2010 | British | - |
| Deborah Grimason | Director | 13 Apr 2007 | 19 Jun 2009 | British | 63 years |
| Deborah Grimason | Director | 1 Jan 2012 | 20 Nov 2013 | British | 63 years |
| Deborah Grimason | Secretary | 13 Apr 2007 | 19 Jun 2009 | British | - |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 1 Feb 2010 | 27 Aug 2015 | United Kingdom | - |
| Marie-cecile Collignon | Director | 1 Sept 2011 | 31 Dec 2011 | French | 50 years |
| Michael John Choules | Director | 27 Aug 2015 | 9 Apr 2021 | British | 66 years |
| Michael Patrick Campbell | Director | 12 Sept 2005 | 11 Nov 2005 | Irish | 57 years |
| Michael Patrick Campbell | Secretary | 12 Sept 2005 | 11 Nov 2005 | Irish | - |
| Paul Antony Clarke | Director | 12 Sept 2005 | 11 Nov 2005 | British | 55 years |
| Peter William Joseph Mills | Director | 11 Nov 2005 | 30 Jun 2010 | British | 73 years |
| Phillip Thomas Edward Lanyon | Director | 16 Aug 2010 | 28 Mar 2013 | British | 62 years |
| Raymond Alfred Elliott | Director | 11 Nov 2005 | 13 Apr 2007 | British | 79 years |
| Raymond Alfred Elliott | Secretary | 11 Nov 2005 | 13 Apr 2007 | British | - |
| Rebecca Joan Powell | Director | 5 Jan 2011 | 1 Sept 2011 | British | 54 years |
| Richard John Wood | Director | 9 Apr 2021 | 30 Sept 2022 | British | 54 years |
| Ruth Sarah Button | Director | 30 Sept 2022 | 1 Oct 2025 | British | 42 years |
| Sonia Fennell | Director | 7 Jun 2010 | 5 Jan 2011 | British | 67 years |
