| Amec Nominees Limited | Corporate Director | 13 May 1999 | 7 Jul 2000 | United Kingdom | - |
| Clifford Chance Secretaries Limited | Corporate Secretary | 15 Apr 1999 | 16 Sept 2005 | United Kingdom | - |
| Colin Fellowes | Secretary | 27 Oct 1991 | 15 Apr 1999 | British | - |
| Ewan Thomas Anderson | Director | 16 Sept 2005 | 29 Mar 2011 | British | 60 years |
| Geoffrey Harold Fogden | Director | 30 Apr 2001 | 31 Jan 2003 | British | 76 years |
| John Hampson | Director | 27 Oct 1991 | 30 Jun 1995 | British | 77 years |
| John Steel Richards | Director | 16 Sept 2005 | 18 Nov 2013 | British | 69 years |
| Keith Manson Miller | Director | 16 Sept 2005 | 31 Mar 2015 | British | 77 years |
| Malcolm Albert Hawe | Director | 27 Oct 1991 | 12 Jun 1992 | British | 88 years |
| Michael John Cox | Director | 12 Jun 1992 | 15 Apr 1999 | British | 68 years |
| Pamela June Smyth | Secretary | 16 Sept 2005 | 16 May 2012 | British | - |
| Paul Mario Bak | Director | 15 Apr 1999 | 16 Sept 2005 | British | 71 years |
| Robert John Wood | Director | 14 Mar 2003 | 16 Sept 2005 | British | 74 years |
| Roger Isaac | Director | 27 Oct 1991 | 30 Jun 1995 | British | 80 years |
| Stanley Mills | Director | 16 Sept 2005 | 30 Sept 2009 | British | 78 years |
| Stanley Robertson Jackson | Director | 1 Nov 1996 | 15 Apr 1999 | British | 77 years |
| Stanley Robertson Jackson | Director | 30 Apr 2001 | 16 Sept 2005 | British | 77 years |
| Stephen Colm Devine | Director | 27 Oct 1991 | 1 Nov 1996 | Irish | 79 years |
| Stewart Antony Baseley | Director | 15 Apr 1999 | 16 Sept 2005 | British | 68 years |
| Timothy Hough | Director | 16 Sept 2005 | 29 Mar 2011 | British | 69 years |