| Andrew Christopher Bolter | Director | 3 Sept 2012 | 4 Apr 2014 | British | 56 years |
| Charles Fraser Norris | Director | 31 Mar 1998 | 30 Jun 1999 | British | 73 years |
| Charles Fraser Norris | Secretary | 8 Jan 1998 | 30 Mar 2006 | British | - |
| Charles Lindsay Carlow | Director | 1 Nov 1997 | 8 Jan 1998 | British | 50 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 |
| Donald Ross Urquhart | Director | 5 Jun 1991 | 6 Sept 1993 | British | 88 years |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| Graham Samuel Greenhalgh | Director | 8 Jan 1998 | 1 May 2001 | British | 79 years |
| James Henry Forrest | Director | 9 Aug 1989 | 10 Mar 1998 | British | 88 years |
| James Richard Stirk | Director | 11 Jun 2010 | 14 Dec 2012 | British | 67 years |
| James Robert Brown Jamieson | Director | 1 Jun 1998 | 30 Jun 1999 | British | 84 years |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 20 Jan 2014 | 27 Aug 2015 | United Kingdom | - |
| Michael John Choules | Director | 27 Aug 2015 | 9 Apr 2021 | British | 66 years |
| Richard John Wood | Director | 9 Apr 2021 | 30 Sept 2022 | British | 54 years |
| Robert Ian Walter Boyd | Director | 1 May 2001 | 5 Aug 2005 | British | 81 years |
| Ruth Sarah Button | Director | 30 Sept 2022 | 1 Oct 2025 | British | 42 years |
| Tarmac Nominees Limited | Corporate Director | 5 Aug 2005 | 20 Jan 2014 | United Kingdom | - |
| Tarmac Nominees Two Limited | Corporate Secretary | 30 Mar 2006 | 20 Jan 2014 | United Kingdom | - |
| Terence Robert Last | Director | 1 May 2001 | 20 Feb 2004 | British | 76 years |
| William Allan Simon | Director | 9 Aug 1989 | 30 Apr 1998 | British | 72 years |
| William Lindsay Carlow | Director | 9 Aug 1989 | 8 Jan 1998 | British | 80 years |
| William Lindsay Carlow | Secretary | 9 Aug 1989 | 8 Jan 1998 | British | - |
