| Adrian John Mclean | Director | 7 Jul 1999 | 1 Jul 2003 | Irish | 57 years |
| Alan George Sheppard | Director | 20 Jul 2001 | 31 Oct 2008 | British | 72 years |
| Andrew Christopher Bolter | Director | 3 Sept 2012 | 4 Apr 2014 | British | 56 years |
| Christopher Gordon Reynolds | Secretary | 21 Dec 2000 | 30 Apr 2009 | British | - |
| David Anthony Grady | Director | 2 Sept 2009 | 11 Jun 2010 | British | 57 years |
| Deborah Grimason | Director | 28 Jun 2013 | 20 Nov 2013 | British | 63 years |
| Filbuk (secretaries) Limited | Corporate Nominee Secretary | 1 Mar 1999 | 13 Apr 1999 | - | - |
| Filbuk Nominees Limited | Corporate Nominee Director | 1 Mar 1999 | 13 Apr 1999 | - | - |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| James Richard Stirk | Director | 30 Apr 2009 | 2 Sept 2009 | British | 67 years |
| James Richard Stirk | Director | 11 Jun 2010 | 14 Dec 2012 | British | 67 years |
| James Richard Stirk | Secretary | 30 Apr 2009 | 2 Sept 2009 | British | - |
| John Christopher Barritt | Director | 13 Apr 1999 | 20 Jul 2001 | British | 79 years |
| John Ferguson Bowater | Director | 1 Nov 2000 | 3 Feb 2004 | British | 77 years |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 28 Jun 2013 | 27 Aug 2015 | United Kingdom | - |
| Michael John Choules | Director | 27 Aug 2015 | 9 Apr 2021 | British | 66 years |
| Neil Graham Scott Roberts | Director | 13 Oct 2008 | 30 Apr 2009 | British | 67 years |
| Noel Mclean | Director | 7 Jul 1999 | 1 Jul 2003 | Irish | 51 years |
| Richard John Wood | Director | 9 Apr 2021 | 30 Sept 2022 | British | 54 years |
| Robert Ian Findlater | Director | 13 Apr 1999 | 26 May 2000 | British | 71 years |
| Tarmac Nominees Limited | Corporate Director | 29 Apr 2009 | 29 Jun 2013 | United Kingdom | - |
| Tarmac Nominees Two Limited | Corporate Director | 2 Sept 2009 | 29 Jun 2013 | United Kingdom | - |
| Tarmac Nominees Two Limited | Corporate Secretary | 2 Sept 2009 | 29 Jun 2013 | United Kingdom | - |
| Timothy Charles Jackson | Secretary | 13 Apr 1999 | 21 Dec 2000 | British | - |
| Timothy Conrad Langston Hall | Director | 3 Feb 2004 | 2 Sept 2009 | English | 73 years |
