| Andrew Christopher Bolter | Director | 3 Sept 2012 | 4 Apr 2014 | British | 56 years |
| Barrie Frederick Gill | Director | 31 Jan 1991 | 27 Aug 1999 | British | 77 years |
| Bernard Malcolm Murphy | Director | 6 Mar 1998 | 27 Aug 1999 | British | 68 years |
| Bernard Malcolm Murphy | Secretary | 20 Mar 1995 | 27 Aug 1999 | British | - |
| Christopher Gordon Reynolds | Director | 17 Jan 2008 | 18 May 2009 | British | 73 years |
| Clive Cadwgan James | Director | 27 Aug 1999 | 16 May 2005 | British | 78 years |
| David Anthony Grady | Director | 18 May 2009 | 11 Jun 2010 | British | 57 years |
| David Fyfe | Director | 20 Feb 1998 | 31 May 1999 | American | 83 years |
| Deborah Grimason | Director | 28 Jun 2013 | 20 Nov 2013 | British | 63 years |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| Guy Colson | Director | 20 Feb 1998 | 20 Jan 1999 | Belgian | 72 years |
| Hans Alwin Schmidt | Director | 31 Jan 1991 | 20 Mar 1995 | German | 88 years |
| Hans Alwin Schmidt | Secretary | 31 Jan 1991 | 20 Mar 1995 | German | - |
| Helen Douglas | Director | 27 Aug 1999 | 16 May 2005 | British | 66 years |
| Helen Douglas | Secretary | 27 Aug 1999 | 16 May 2005 | British | - |
| James Richard Stirk | Director | 11 Jun 2010 | 14 Dec 2012 | British | 67 years |
| John Peter Hewitt | Director | 31 Jan 1991 | 31 May 1999 | British | 80 years |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 28 Jun 2013 | 27 Aug 2015 | United Kingdom | - |
| Nicholas Henry Aldous Wood | Director | 27 Aug 1999 | 31 Mar 2005 | British | 75 years |
| Peter Hoare Price | Director | 31 Jan 1991 | 31 Mar 1998 | British | 98 years |
| Philip James Robinson | Director | 3 Jul 1996 | 3 Aug 1998 | British | 69 years |
| Philip William Richards | Director | 31 Jan 1991 | 27 Aug 1999 | British | 70 years |
| Richard Priestley Bennett | Director | 20 Jan 1999 | 27 Aug 1999 | British | 82 years |
| Tarmac Nominees Limited | Corporate Director | 16 May 2005 | 29 Jun 2013 | United Kingdom | - |
| Tarmac Nominees Two Limited | Corporate Director | 16 May 2005 | 29 Jun 2013 | United Kingdom | - |
| Tarmac Nominees Two Limited | Corporate Secretary | 16 May 2005 | 29 Jun 2013 | United Kingdom | - |
