| Amec Nominees Limited | Corporate Director | 8 Jul 1994 | 29 Jul 1996 | United Kingdom | - |
| Bart Management Limited | Corporate Nominee Director | 26 Mar 1993 | 8 Jul 1994 | United Kingdom | - |
| Bart Management Limited | Corporate Nominee Secretary | 26 Mar 1993 | 8 Jul 1994 | United Kingdom | - |
| Bart Secretaries Limited | Corporate Nominee Director | 26 Mar 1993 | 8 Jul 1994 | United Kingdom | - |
| Christopher Laskey Fidler | Director | 31 Aug 2009 | 22 Jul 2016 | British | 71 years |
| Christopher Laskey Fidler | Secretary | 16 Jun 2009 | 31 Aug 2009 | British | - |
| Colin Fellowes | Secretary | 8 Jul 1994 | 16 Jun 2009 | British | - |
| David Robson | Director | 29 Jul 1996 | 31 Jul 2003 | British | 81 years |
| Douglas James Bennie | Director | 16 Mar 1998 | 31 Aug 1999 | British | 79 years |
| Helen Morrell | Secretary | 4 Dec 2015 | 22 Feb 2017 | - | - |
| Jennifer Ann Warburton | Director | 22 Jul 2016 | 27 Jan 2017 | British | 57 years |
| Kim Andrea Hand | Secretary | 31 Aug 2009 | 4 Dec 2015 | British | - |
| Martin Smith | Director | 1 Dec 1997 | 31 Oct 1999 | British | 76 years |
| Michael John Bardsley | Director | 15 Sept 1995 | 29 Jul 1996 | British | 82 years |
| Michael John Marlow | Director | 29 Jul 1996 | 31 Jul 1999 | British | 79 years |
| Nigel James Maxwell Davies | Director | 8 Jul 1994 | 15 Sept 1995 | British | 72 years |
| Peter James Holland | Director | 31 Jul 2003 | 31 Aug 2009 | British | 79 years |
| Roger Douglas Tucker | Director | 29 Jul 1996 | 12 Jul 1997 | British | 78 years |