| Amec Nominees Limited | Corporate Director | 31 Jul 2003 | 11 Aug 2020 | United Kingdom | - |
| Andrew Stuart Mclean | Director | 11 Aug 2020 | 31 Aug 2024 | British | 56 years |
| Anthony Daykin Oldershaw | Director | 8 Jun 1992 | 14 Oct 1996 | British | 81 years |
| Christopher Laskey Fidler | Director | 31 Aug 2009 | 22 Jul 2016 | British | 71 years |
| Christopher Laskey Fidler | Secretary | 8 Jun 1992 | 31 Aug 2009 | British | - |
| Courtney Hugh Cornish | Director | 8 Jun 1992 | 14 Oct 1996 | British | 76 years |
| David Robson | Director | 29 Jan 1998 | 31 Jul 2003 | British | 81 years |
| Derek Eyres | Director | 8 Jun 1992 | 31 Mar 1993 | British | 93 years |
| Edward George Smyth | Director | 8 Jun 1992 | 14 Oct 1996 | British | 72 years |
| Helen Morrell | Secretary | 4 Dec 2015 | 22 Feb 2017 | - | - |
| Iain Angus Jones | Secretary | 16 Feb 2018 | 12 Jun 2024 | - | - |
| Jennifer Ann Warburton | Director | 22 Jul 2016 | 16 Feb 2018 | British | 57 years |
| Jennifer Ann Warburton | Secretary | 22 Feb 2017 | 16 Feb 2018 | - | - |
| John Arthur Ronald Cornwall | Director | 8 Jun 1992 | 31 Dec 1992 | British | 88 years |
| John Bernard Harrison | Director | 8 Jun 1992 | 31 Mar 2005 | British | 78 years |
| John Rodney Anderson | Director | 1 Jan 1993 | 6 Apr 1997 | British | 85 years |
| Kim Andrea Hand | Secretary | 31 Aug 2009 | 4 Dec 2015 | British | - |
| Malcolm Kenyon Eckersall | Director | 8 Jun 1992 | 29 Jan 1998 | British | 81 years |
| Mark James Watson | Director | 16 Feb 2018 | 31 Dec 2020 | British | 62 years |
| Peter James Holland | Director | 31 Mar 2005 | 31 Aug 2009 | British | 79 years |
| Peter John York | Director | 8 Jun 1992 | 14 Oct 1996 | British | 83 years |
| Stewart Martin Atkinson | Director | 8 Jun 1992 | 14 Oct 1996 | British | 79 years |