| Andrew Christopher Bolter | Director | 3 Sept 2012 | 4 Apr 2014 | British | 56 years |
| Christopher Gordon Reynolds | Director | 17 Jan 2008 | 18 May 2009 | British | 73 years |
| David Anthony Grady | Director | 18 May 2009 | 11 Jun 2010 | British | 57 years |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| James Richard Stirk | Director | 11 Jun 2010 | 14 Dec 2012 | British | 67 years |
| James Richard Stirk | Secretary | 31 Aug 1996 | 3 Feb 2004 | British | - |
| John Derrick Sims | Director | 14 May 1992 | 30 Jun 1992 | British | 99 years |
| John Ferguson Bowater | Director | 14 May 1992 | 8 Jan 1993 | British | 77 years |
| John Ferguson Bowater | Director | 31 Aug 1996 | 3 Feb 2004 | British | 77 years |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 28 Jun 2013 | 27 Aug 2015 | United Kingdom | - |
| Leslie Anthony Ellis Hopkins | Director | 1 Aug 1994 | 31 Aug 1996 | British | 84 years |
| 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 James Harrison | Director | 1 Jul 1992 | 1 Aug 1994 | British | 79 years |
| Ruth Sarah Button | Director | 30 Sept 2022 | 1 Oct 2025 | British | 42 years |
| Tarmac Nominees Limited | Corporate Director | 2 Feb 2004 | 28 Jun 2013 | United Kingdom | - |
| Tarmac Nominees Two Limited | Corporate Director | 2 Feb 2004 | 28 Jun 2013 | United Kingdom | - |
| Tarmac Nominees Two Limited | Corporate Secretary | 3 Feb 2004 | 28 Jun 2013 | United Kingdom | - |
| Timothy Charles Jackson | Director | 4 Jan 1993 | 31 Dec 2003 | British | 74 years |
| Timothy Charles Jackson | Secretary | 14 May 1992 | 31 Aug 1996 | British | - |
