| Andrew Christopher Bolter | Director | 28 Mar 2013 | 4 Apr 2014 | British | 56 years |
| Charles David Anderson Jones | Director | 23 May 1994 | 22 Sept 1994 | British | 87 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 | - |
| Colin Vaughan Mcleod | Director | 23 May 1994 | 30 Sept 1998 | British | 76 years |
| 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 | - |
| Denis Pierre Rene Berthon | Director | 23 Aug 1996 | 31 Oct 1998 | French | 71 years |
| Dominique Georges Jacques Hooreman | Director | 16 Sept 1996 | 29 May 2002 | French | 81 years |
| Edward Andrew Perronet Sells | Director | 23 May 1994 | 27 Dec 1995 | British | 78 years |
| Evelyn Maria Meenaghan | Nominee Secretary | 19 May 1994 | 23 May 1994 | British | - |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| Gerald Richard Gray Berwick | Director | 22 Sept 1994 | 30 Jan 1997 | British | 91 years |
| Hugh Gordon Beevor | Director | 22 Sept 1994 | 28 Sept 1995 | British | 83 years |
| Ian Maclean Reid | Director | 1 Nov 1998 | 4 Apr 2003 | British | 81 years |
| Jean Claude Block | Director | 30 Jul 1997 | 14 Apr 2000 | French | 59 years |
| John Richard Rolph | Director | 22 Sept 1994 | 28 Sept 1995 | British | 77 years |
| John Richard Rolph | Secretary | 22 Sept 1994 | 28 Sept 1995 | British | - |
| John Thomas Clark | Director | 28 Sept 1995 | 24 Apr 1997 | British | 87 years |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 1 Feb 2010 | 27 Aug 2015 | United Kingdom | - |
| Malcolm Gibbins | Secretary | 28 Sept 1995 | 20 Aug 1998 | British | - |
| 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 |
| Peter Gauntlett Fox-andrews | Secretary | 23 May 1994 | 22 Sept 1994 | British | - |
| Peter Sidney Worsley | Director | 23 May 1994 | 22 Sept 1994 | British | 78 years |
| Peter William Joseph Mills | Director | 6 Apr 2003 | 30 Jun 2010 | British | 73 years |
| Phillip Thomas Edward Lanyon | Director | 16 Aug 2010 | 28 Mar 2013 | British | 62 years |
| Raymond Alfred Elliott | Director | 1 Nov 1998 | 13 Apr 2007 | British | 79 years |
| Raymond Alfred Elliott | Secretary | 20 Aug 1998 | 13 Apr 2007 | British | - |
| Rebecca Joan Powell | Director | 5 Jan 2011 | 1 Sept 2011 | British | 54 years |
| Reginald Illingworth | Director | 23 May 1994 | 22 Sept 1994 | British | 97 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 |
| Stuart Neil Seaton | Nominee Director | 19 May 1994 | 23 May 1994 | British | 70 years |
| Tarmac Directors (uk) Limited | Corporate Director | 2 Jun 2016 | 15 Aug 2016 | United Kingdom | - |
| Timothy Stuart Ross | Director | 8 May 1996 | 30 Jan 1997 | British | 78 years |