| Andrew Christopher Bolter | Director | 3 Sept 2012 | 4 Apr 2014 | British | 56 years |
| Basil Wyncliffe Larter | Director | 25 Jun 1996 | 2 Sept 2005 | British | 83 years |
| Brian Jeffrey Howarth | Director | 12 Jul 1991 | 27 Dec 1995 | British | 85 years |
| Charles Anthony Wentzel | Secretary | 28 Dec 1995 | 25 Jun 1996 | British | - |
| David Bruce Moore | Director | 5 Jan 1996 | 7 May 1999 | British | 75 years |
| David Jones | Director | 25 Jun 1996 | 16 May 2005 | British | 77 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 Franklin Young | Director | 1 Feb 2011 | 29 Jun 2013 | South African | 57 years |
| Invensys Secretaries Limited | Corporate Secretary | 1 Feb 1995 | 5 Jan 1996 | United Kingdom | - |
| James Demmink Thom | Director | 1 Mar 1995 | 27 Dec 1995 | British | 80 years |
| James Richard Stirk | Secretary | 16 May 2005 | 30 Nov 2012 | British | - |
| Johannes Frederick Van Blerk Serfontein | Director | 1 Aug 2006 | 1 Feb 2011 | South African | 58 years |
| John Draper | Director | 5 Jan 1996 | 11 Oct 1999 | British | 85 years |
| John Kerr Lindsay | Secretary | 17 Jun 2004 | 16 May 2005 | British | - |
| John Richard Bradshaw | Secretary | 30 Nov 2012 | 29 Jun 2013 | British | - |
| Kenneth Alfred Riley | Director | 12 Jul 1991 | 4 Mar 2002 | British | 85 years |
| Lafarge Tarmac Directors (uk) Limited | Corporate Director | 28 Jun 2013 | 27 Aug 2015 | United Kingdom | - |
| Robert Casson Brown | Director | 1 Dec 1994 | 27 Dec 1995 | British | 87 years |
| Robert Ian Walter Boyd | Director | 25 Jun 1996 | 16 May 2005 | British | 81 years |
| Robert Ian Walter Boyd | Secretary | 12 Jul 1991 | 1 Feb 1995 | British | - |
| Robert Ian Walter Boyd | Secretary | 25 Jun 1996 | 17 Jun 2004 | British | - |
| Terence Robert Last | Director | 16 May 2005 | 29 Jun 2013 | British | 76 years |
| Timothy Charles Jackson | Director | 16 May 2005 | 31 Jul 2006 | British | 74 years |
