| Andrew Christopher Bolter | Director | 28 Mar 2013 | 4 Apr 2014 | British | 56 years |
| Andrew James Parris | Director | 9 Jan 2017 | 19 Jun 2019 | British | 58 years |
| Angela Dines | Secretary | 31 Jul 2014 | 31 Aug 2017 | - | - |
| Clive Jonathan Mottram | Director | 15 Jun 2009 | 2 Jun 2010 | British | 67 years |
| Colin James Campbell | Director | 30 Jun 1998 | 30 Nov 1998 | British | 74 years |
| Deborah Grimason | Director | 29 Mar 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 | - |
| Derek Burbidge | Director | 14 Jul 1999 | 23 Oct 2006 | British | 67 years |
| Fiona Puleston Penhallurick | Director | 4 Apr 2014 | 15 Mar 2016 | British | 59 years |
| Guy Franklin Young | Director | 28 Mar 2013 | 31 Oct 2015 | South African | 57 years |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 30 Jun 2010 | 27 Aug 2015 | United Kingdom | - |
| Lawrence William Hagan | Secretary | 13 Oct 2014 | 26 May 2017 | - | - |
| Marie-cecile Collignon | Director | 1 Sept 2011 | 31 Dec 2011 | French | 50 years |
| Mark Leslie Crump | Director | 30 Jun 1998 | 31 Mar 1999 | British | 63 years |
| Michael Edward Anderton Chant | Director | 30 May 1992 | 30 Apr 1998 | British | 86 years |
| Michael John Choules | Director | 27 Aug 2015 | 9 Apr 2021 | British | 66 years |
| Oliver John Greer White | Director | 30 May 1992 | 7 Apr 2000 | British | 81 years |
| Paul Anthony Chitty | Director | 31 Mar 1999 | 6 Apr 2003 | British | 73 years |
| Paul Francis William Cottrell | Director | 24 Aug 2017 | 26 Jul 2024 | British | 60 years |
| Peter William Joseph Mills | Director | 30 Jun 1998 | 1 Jun 1999 | British | 73 years |
| Peter William Joseph Mills | Director | 6 Apr 2003 | 30 Jun 2010 | British | 73 years |
| Phillip Thomas Edward Lanyon | Director | 16 Aug 2010 | 23 May 2014 | British | 62 years |
| Raymond Alfred Elliott | Director | 31 Mar 1999 | 13 Apr 2007 | British | 79 years |
| Raymond Alfred Elliott | Secretary | 30 Jun 1998 | 13 Apr 2007 | British | - |
| Rebecca Joan Powell | Director | 7 Feb 2011 | 1 Sept 2011 | British | 54 years |
| Richard Charles Monro | Secretary | 30 May 1992 | 30 Jun 1998 | British | - |
| Richard John Wood | Director | 19 Jun 2019 | 30 Sept 2022 | British | 54 years |
| Richard Keen | Secretary | 5 Jan 2011 | 31 Jul 2014 | - | - |
| Richard Keen | Director | 5 Jan 2011 | 7 Feb 2011 | British | 58 years |
| Robert David Andrews | Director | 30 May 1992 | 30 Jun 1998 | British | 84 years |
| Ruth Sarah Button | Director | 30 Sept 2022 | 1 Oct 2025 | British | 42 years |
| Sandra Onions | Director | 28 Mar 2013 | 31 Mar 2015 | British | 60 years |
| Sonia Fennell | Director | 7 Jun 2010 | 5 Jan 2011 | British | 67 years |
| Sonia Fennell | Secretary | 19 Jun 2009 | 5 Jan 2011 | British | - |
| Stefan Hutwohl | Director | 31 Mar 1999 | 16 Jan 2002 | German | 62 years |
| Stephen John East | Director | 3 Nov 1995 | 1 Nov 1996 | British | 68 years |
| Stephen Rothwell O'brien | Director | 30 May 1992 | 31 Mar 1998 | British | 69 years |
| Tarmac Directors (uk) Limited | Corporate Director | 15 Aug 2016 | 9 Jan 2017 | United Kingdom | - |