| Andrew David Poulter | Director | 12 Jul 2001 | 18 Sept 2002 | British | 72 years |
| Andrew Murphy | Director | 12 May 2011 | 5 Apr 2013 | British | 59 years |
| Anthony John Jackson | Director | 15 Jun 1992 | 31 Dec 1994 | British | 93 years |
| Charles Gerard Young | Director | 15 Jun 1992 | 24 Aug 1995 | British | 79 years |
| Charles Law | Director | 4 Apr 2013 | 5 Dec 2016 | French | 62 years |
| Christopher Robert Howard Bull | Director | 25 Oct 1996 | 12 Jul 2001 | British | 84 years |
| Christopher Samuel Tugendhat | Director | 25 Jan 1996 | 12 Jul 2001 | British | 89 years |
| Christopher Terrel Wyatt | Director | 15 Jun 1992 | 22 May 1996 | British | 99 years |
| Clive Jonathan Mottram | Director | 15 Jun 2009 | 2 Jun 2010 | British | 67 years |
| Clive Jonathan Mottram | Secretary | 15 Jun 2009 | 2 Jun 2010 | British | - |
| Cyrille Ragoucy | Director | 4 Apr 2013 | 19 Jan 2016 | French | 70 years |
| Daniel Timothy Creedon | Director | 30 Oct 2015 | 10 Jan 2018 | Irish | 61 years |
| David Francis George Lovett | Director | 1 Jul 1992 | 1 Sept 2000 | Canadian | 84 years |
| David Nicholas Walkerdine | Director | 18 Sept 2002 | 23 Jul 2004 | British | 70 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 | - |
| Dyfrig Morgan James | Director | 15 Sept 2011 | 7 Jan 2013 | British | 72 years |
| Erdogan Sadettin Pekenc | Director | 22 Jan 2007 | 20 May 2011 | British Turkish | 75 years |
| Eric William Thomson Dalkin | Secretary | 15 Jun 1992 | 31 Dec 1993 | British | - |
| Fiona Puleston Penhallurick | Director | 22 May 2015 | 15 Mar 2016 | British | 59 years |
| Francis Colhoun | Director | 31 Jan 2009 | 5 Apr 2013 | British | 53 years |
| Francis John Mckay | Director | 16 Oct 1995 | 31 Oct 1999 | British | 81 years |
| Geoffrey Hazlitt Wilson | Director | 15 Jun 1992 | 23 May 1997 | British | 97 years |
| Guy Franklin Young | Director | 4 Apr 2013 | 31 Oct 2015 | South African | 57 years |
| Hugh Gordon Beevor | Director | 15 Jun 1992 | 30 Jun 1993 | British | 83 years |
| Ian Stuart Varley Mckenzie | Director | 15 Jun 1992 | 7 Apr 1998 | British | 88 years |
| James Rushworth Hope Loudon | Director | 15 Jun 1992 | 12 Jul 2001 | British | 83 years |
| James William Mccolgan | Director | 15 Jun 1992 | 30 Sept 1992 | British | 96 years |
| Jean Carlos Angulo | Director | 12 Jul 2001 | 13 Nov 2008 | France | 77 years |
| Jean Francois Sautin | Director | 1 Aug 2003 | 31 Jan 2007 | French | 79 years |
| Jean Pierre Cloiseau | Director | 12 Jul 2001 | 23 May 2006 | French | 82 years |
| Jean-jacques Jacques Gauthier | Director | 12 Jul 2001 | 13 Nov 2008 | British | 67 years |
| Jeremy Michael Greenwood | Director | 22 May 2015 | 30 Nov 2020 | British | 60 years |
| Johanna O'driscoll | Director | 10 Jan 2018 | 28 Feb 2023 | Irish | 50 years |
| John Anthony Quelch | Director | 1 Nov 2000 | 12 Jul 2001 | Usa | 75 years |
| John Foster Bray Hunter | Director | 15 Jun 1992 | 12 Jul 2001 | British | 89 years |
| Karl Russell Seal | Director | 25 Oct 1996 | 12 Jul 2001 | British | 84 years |
| Keith Orrell-jones | Director | 15 Jun 1992 | 15 Jul 1999 | British | 89 years |
| Lafarge Cementos S A | Corporate Director | 27 May 2003 | 12 Dec 2008 | - | - |
| Lord Moore Of Lower Marsh | Corporate Director | 1 Mar 1993 | 12 Jul 2001 | - | - |
| Marie-cecile Collignon | Director | 8 Sept 2011 | 31 Dec 2011 | French | 50 years |
| Mark Thomas Wood | Director | 21 Nov 2022 | 31 Aug 2025 | British | 53 years |
| Mark Wilson Joel | Director | 22 May 2015 | 21 Aug 2017 | British | 63 years |
| Martin Kenneth Riley | Director | 22 May 2015 | 30 Mar 2021 | British | 59 years |
| Michael Anthony Eberlin | Director | 7 Jun 2017 | 31 Dec 2021 | British | 64 years |
| Nicholas Michael Peall | Director | 23 May 2006 | 5 Apr 2013 | British,australian | 71 years |
| Patrice Marie Michel Tourliere | Director | 12 Jul 2001 | 13 Nov 2008 | French | 72 years |
| Paul Fleetham | Director | 22 May 2015 | 30 Apr 2022 | British | 65 years |
| Peter Buckley | Director | 30 Mar 2021 | 30 Oct 2024 | Irish | 61 years |
| Peter Campbell Mcauslan | Director | 23 Jul 2004 | 31 Jan 2009 | Dual British Canadi | 72 years |
| Peter Ingram Walters | Director | 15 Jun 1992 | 22 May 1996 | British | 95 years |
| Pierre Deleplanque | Director | 12 Jul 2001 | 2 Jul 2002 | French | 62 years |
| Rajeev Ramankutty | Director | 12 May 2011 | 5 Apr 2013 | Australian | 64 years |
| Raymond Alfred Elliott | Director | 23 May 2006 | 13 Apr 2007 | British | 79 years |
| Raymond Alfred Elliott | Secretary | 14 Dec 2001 | 13 Apr 2007 | British | - |
| Rebecca Joan Powell | Secretary | 6 Sept 2010 | 1 Sept 2011 | - | - |
| Rebecca Joan Powell | Director | 6 Sept 2010 | 1 Sept 2011 | British | 54 years |
| Richard David Cairns Hubbard | Director | 15 Jun 1992 | 22 May 1996 | British | 90 years |
| Richard Francis Tapp | Secretary | 1 Jan 1996 | 14 Dec 2001 | British | - |
| Richard Neil Haythornthwaite | Director | 1 Oct 1997 | 12 Jul 2001 | British | 70 years |
| Richard Stuart Olsen | Director | 12 Jul 2001 | 9 Sept 2003 | British | 71 years |
| Richard West Henchley | Secretary | 1 Jan 1994 | 31 Dec 1995 | British | - |
| Robin David Broadley | Director | 15 Jun 1992 | 25 May 1994 | British | 93 years |
| Robin John Doody | Director | 21 Nov 2022 | 30 Jun 2024 | British | 51 years |
| Roy Gary Gentles | Director | 1 Sept 2000 | 14 Feb 2001 | United States | 77 years |
| Seamus Lynch | Director | 1 Dec 2021 | 2 Aug 2023 | Irish | 66 years |
| Sonia Fennell | Secretary | 7 Jun 2010 | 6 Sept 2010 | - | - |
| Stephen James Barker | Director | 27 Jan 2025 | 18 Aug 2025 | British | 53 years |