| Arthur James Birchall | Secretary | 4 Dec 1989 | 31 Mar 1993 | British | - |
| Brian John Watkins | Director | 18 Jul 1989 | 28 Feb 1997 | British | 89 years |
| Carillion Management Limited | Corporate Director | 1 Jan 2004 | 2 Sept 2008 | United Kingdom | - |
| Carillion Secretariat Limited | Corporate Director | 30 Apr 2006 | 2 Sept 2008 | United Kingdom | - |
| Charles Richard Barton | Director | 12 Jun 1995 | 13 Jun 1996 | British | 76 years |
| Clive Beck | Director | 18 Jul 1989 | 1 Feb 1993 | British | 89 years |
| Edgar Philip Beck | Director | 18 Jul 1989 | 12 Jun 1995 | British | 92 years |
| Hilary Myra Ellson | Secretary | 31 Dec 1995 | 9 Jun 2006 | British | - |
| James William Ward | Director | 13 Jun 1996 | 1 Jan 2004 | British | 74 years |
| James William Ward | Secretary | 18 Jul 1989 | 4 Dec 1989 | British | - |
| John Roger Marshall | Director | 12 Oct 1992 | 19 Oct 1995 | British | 82 years |
| Keith Woodward | Director | 31 Dec 1995 | 30 Apr 2006 | British | 72 years |
| Mowlem Secretariat Limited | Corporate Secretary | 31 Mar 1993 | 31 Dec 1995 | - | - |
| Paul John Mckenna | Director | 28 Feb 1997 | 8 Jun 2017 | British | 70 years |
| Roger Norman Sainsbury | Director | 18 Jul 1989 | 31 Dec 1995 | British | 86 years |
| Timothy Francis George | Director | 2 Sept 2008 | 30 Jun 2017 | British | 66 years |
| Timothy Francis George | Secretary | 9 Jun 2006 | 30 Jun 2017 | British | - |
| Westley Anthony Maffei | Director | 1 Jul 2017 | 7 Nov 2018 | British | 44 years |
| Westley Maffei | Secretary | 1 Jul 2017 | 7 Nov 2018 | - | - |