| Alain Hecquet | Director | 14 May 1992 | 27 Sept 2007 | French | 79 years |
| Andrew Christopher Bolter | Director | 3 Sept 2012 | 4 Apr 2014 | British | 56 years |
| Bryan William Baker | Director | 14 May 1992 | 30 Nov 1992 | British | 94 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 |
| David Blount | Director | 1 Feb 1993 | 31 Dec 2003 | British | 79 years |
| Deborah Grimason | Director | 28 Jun 2013 | 20 Nov 2013 | British | 63 years |
| Eric John Pountain | Director | 14 May 1992 | 31 Dec 1992 | British | 93 years |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| Graham Thompson | Director | 14 May 1992 | 11 Jan 1993 | British | 88 years |
| James Richard Stirk | Director | 11 Jun 2010 | 14 Dec 2012 | British | 67 years |
| James Richard Stirk | Secretary | 31 Aug 1996 | 30 Nov 2012 | British | - |
| John David Lovering | Director | 19 May 1994 | 12 Sept 1995 | British | 77 years |
| 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 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 | - |
| Leslie Anthony Ellis Hopkins | Director | 1 Aug 1994 | 31 Aug 1996 | British | 84 years |
| Michael John Choules | Director | 27 Aug 2015 | 9 Apr 2021 | British | 66 years |
| Michael John King | Director | 14 May 1992 | 30 Sept 1995 | British | 87 years |
| Michael John Saunders | Director | 4 Aug 1994 | 13 Jul 1998 | British | 70 years |
| Michael John Saunders | Director | 1 Jan 2004 | 31 Dec 2005 | British | 70 years |
| Richard Arthur Herbert Perkins | Director | 14 May 1992 | 31 Jan 1993 | British | 87 years |
| Richard John Wood | Director | 9 Apr 2021 | 30 Sept 2022 | British | 54 years |
| Robert Reid Purshouse | Director | 14 May 1992 | 16 Oct 1992 | British | 84 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 | 31 Dec 2005 | 29 Jun 2013 | United Kingdom | - |
| Terence Harold Mason | Director | 14 May 1992 | 14 May 1997 | British | 85 years |
| Timothy Charles Jackson | Director | 4 Jan 1993 | 31 Dec 2003 | British | 74 years |
| Timothy Charles Jackson | Secretary | 14 May 1992 | 31 Aug 1996 | British | - |