| Alan John Sheehan | Director | 3 May 1994 | 27 Aug 1999 | British | 79 years |
| Alan William Mccarthy-wyper | Director | 15 Sept 2010 | 17 Jun 2011 | British | 60 years |
| Andrew Leonard Wallis | Secretary | 13 Jul 1989 | 30 Sept 1989 | British | - |
| Andrew Leonard Wallis | Director | 8 Jun 1989 | 30 Sept 1989 | British | 87 years |
| Anthony John Thompson | Director | 1 May 1993 | 31 Jul 1996 | British And Austrailian | 63 years |
| Anthony Peter Hutchison | Director | 30 Mar 2006 | 23 Feb 2007 | British | 78 years |
| Bnoms Limited | Corporate Secretary | 1 Jan 2013 | 8 Sept 2015 | United Kingdom | - |
| Christopher Hurst Downton | Secretary | 8 Jun 1989 | 13 Jul 1989 | British | - |
| Colin Murphy | Director | 30 Mar 2006 | 17 Aug 2009 | British | 64 years |
| Colin Murphy | Director | 1 Jul 1998 | 30 Mar 2006 | British | 64 years |
| Colin Murphy | Secretary | 27 Aug 1999 | 7 Oct 1999 | British | - |
| Colin Weallans | Director | 4 Aug 2003 | 11 Dec 2003 | British | 70 years |
| David Eyre | Director | 12 Apr 2001 | 30 Mar 2006 | British | 65 years |
| David Eyre | Director | 30 Mar 2006 | 1 Dec 2007 | British | 65 years |
| Donald Edward Hammond | Director | 1 Jun 1993 | 31 May 2001 | Usa | 71 years |
| Eric Arthur Brightmore | Director | 8 Jun 1989 | 13 Dec 1993 | British | 85 years |
| Gary Andrew Newman | Director | 1 Jun 1998 | 1 Apr 2001 | British | 66 years |
| George Castan | Director | 27 Aug 1999 | 7 Oct 1999 | Australian | 89 years |
| Gerald Thornton Brown | Director | 30 Jul 2004 | 31 May 2005 | British | 76 years |
| Graham Joseph Smorgon | Director | 27 Aug 1999 | 7 Oct 1999 | Australian | 77 years |
| Henry Evan Rees | Director | 1 Oct 1989 | 1 Mar 1996 | Australian | 88 years |
| Iain Kenneth Morgan | Director | 30 Mar 2006 | 1 Dec 2007 | British | 68 years |
| Ian Ronald Bonnette | Director | 1 Oct 1989 | 31 Mar 1995 | Australian | 76 years |
| Jane Teresa Hudson | Director | 17 Jun 2011 | 1 Jan 2013 | British | 61 years |
| Jane Teresa Hudson | Secretary | 30 Mar 2006 | 1 Jan 2013 | British | - |
| John Andrew Coomer | Secretary | 1 Aug 1997 | 31 Mar 1998 | British | - |
| John Keith Hampson | Director | 17 Aug 2009 | 20 Apr 2010 | British | 64 years |
| Keith Harold Churm | Director | 30 Mar 2006 | 17 Aug 2009 | British | 69 years |
| Kenneth Mathieson | Director | 8 Jun 1989 | 29 Sept 1989 | British | 87 years |
| Mark Ian O'neill | Director | 7 Oct 1999 | 24 Jun 2003 | British | 58 years |
| Mark William Bullock | Director | 3 Sept 2012 | 10 Feb 2021 | British | 63 years |
| Martin Christopher White | Director | 5 Jul 2010 | 18 Feb 2011 | British | 71 years |
| Matthew Richard Steele | Director | 10 Feb 2021 | 31 Mar 2024 | British | 48 years |
| Maxwell Colin Voigt | Director | 28 Jun 1991 | 1 May 1993 | Australian | 72 years |
| Michael James Austin | Director | 24 Aug 2000 | 5 Oct 2005 | British | 66 years |
| Michael John Edmund Houghton | Director | 8 Jun 1989 | 9 Jun 1989 | British | 80 years |
| Michael Kane Dallas | Secretary | 17 Sept 2015 | 30 Nov 2018 | - | - |
| Mowlem Management Limited | Corporate Director | 31 May 2005 | 30 Mar 2006 | - | - |
| Mowlem Secretariat Limited | Corporate Secretary | 7 Oct 1999 | 30 Mar 2006 | - | - |
| Paul Richard Mainwaring | Director | 31 May 2005 | 30 Mar 2006 | British | 63 years |
| Peter John Louis Zinkin | Director | 30 Mar 2006 | 30 Mar 2006 | British | 73 years |
| Peter Leslie Macready | Director | 7 Oct 1999 | 29 Jul 2005 | British | 83 years |
| Peter Stuart Anderson | Director | 17 Aug 2009 | 3 Sept 2012 | British | 60 years |
| Peter William Frederick Wilson | Director | 24 Jan 1990 | 27 Aug 1999 | British | 82 years |
| Peter William Frederick Wilson | Secretary | 1 Apr 1998 | 27 Aug 1999 | British | - |
| Raymond John Turnell | Director | 7 Oct 1999 | 24 Aug 2000 | Australian | 76 years |
| Richard Hawthorn Adams | Director | 17 Aug 2009 | 7 Jan 2011 | British | 70 years |
| Robert Alan Laird | Director | 1 Sept 1994 | 30 Mar 2006 | British | 79 years |
| Robert Alan Laird | Director | 30 Mar 2006 | 17 Aug 2009 | British | 79 years |
| Robert Ian Maclean | Director | 1 Dec 2007 | 17 Jun 2011 | British | 67 years |
| Robert Ian Thomson | Director | 8 Jun 1989 | 11 Jul 1997 | British | 68 years |
| Robert Russell | Director | 8 Jun 1989 | 1 Oct 1989 | British | 95 years |
| Roy Malcolm Pilgrim | Director | 1 Sept 1992 | 31 Jul 1997 | British | 78 years |
| Roy Malcolm Pilgrim | Secretary | 30 Nov 1992 | 31 Jul 1997 | British | - |
| Terence Francis Dunlevy | Director | 24 Jan 1990 | 30 Nov 1992 | Australian | 77 years |
| Terence Francis Dunlevy | Secretary | 1 Oct 1989 | 30 Nov 1992 | Australian | - |
| Timothy Paul Gorman | Director | 5 Jul 2010 | 17 Jun 2011 | British | 73 years |
| William Brendan Smith | Director | 17 Jun 2003 | 30 Mar 2006 | British | 78 years |