| Andreas Joachim Fegbeutel | Director | 12 Oct 2012 | 21 May 2013 | British | 53 years |
| Andreas Joachim Fegbeutel | Director | 21 May 2013 | 7 Nov 2013 | British | 53 years |
| Andrew Stuart Cunningham Church | Secretary | 25 Apr 1994 | 21 Feb 2002 | British | - |
| Barry Peter Perrin | Director | 9 Jan 2008 | 4 Oct 2010 | British | 63 years |
| Beverley Edward John Dew | Director | 7 Nov 2013 | 5 Dec 2014 | British | 55 years |
| Birse Group Services Limited | Corporate Secretary | 21 Feb 2002 | 4 Jan 2005 | United Kingdom | - |
| Charles Nicholas Pollard | Director | 22 Oct 2014 | 1 Jul 2015 | British | 68 years |
| Daniel James Greenspan | Director | 4 Oct 2010 | 26 Oct 2012 | British | 51 years |
| Daniel James Greenspan | Secretary | 30 Mar 2012 | 12 Oct 2012 | British | - |
| David George Goose | Director | 18 Oct 1991 | 23 Jul 1999 | British | 79 years |
| David John Donaldson | Director | 21 May 2013 | 15 Aug 2014 | British | 74 years |
| David John Swales | Secretary | 18 Oct 1991 | 25 Apr 1994 | British | - |
| Dean John Banks | Director | 8 Jun 2015 | 10 Feb 2021 | British | 55 years |
| Gregory William Mutch | Secretary | 12 Oct 2012 | 30 Sept 2015 | British | - |
| Heather Ann Craven | Director | 21 Feb 2002 | 1 Jul 2002 | British | 65 years |
| Jim Ian Lomas Farley | Director | 15 Apr 2002 | 31 Jan 2003 | British | 73 years |
| Julian David Mclaren | Director | 15 Apr 2002 | 22 Aug 2003 | British | 63 years |
| Kevin Terence Tims | Director | 22 Jul 2005 | 31 Jul 2006 | British | 62 years |
| Mark Farrah | Director | 26 Feb 2013 | 13 Aug 2017 | British | 62 years |
| Mark Lloyd Cutler | Director | 11 Mar 2014 | 11 Nov 2014 | British | 58 years |
| Mark William Bullock | Director | 10 Feb 2021 | 31 Dec 2023 | British | 63 years |
| Martin Budden | Director | 13 Apr 1995 | 1 Jul 2002 | British | 69 years |
| Martin John Peat | Director | 15 Apr 2002 | 12 Sept 2005 | British | 78 years |
| Michael Alan Griffin | Director | 20 Apr 1995 | 28 Apr 1995 | British | 73 years |
| Michael John Peasland | Director | 21 May 2013 | 31 Dec 2013 | British | 74 years |
| Paul Lindsey Mitchell | Director | 15 Apr 2002 | 23 Jul 2005 | English | 73 years |
| Peter Andrew Commins | Director | 1 Mar 2008 | 31 Dec 2015 | British | 69 years |
| Peter Gareth Watson | Director | 23 Jul 1999 | 21 Feb 2002 | British | 76 years |
| Peter Malcolm Birse | Director | 18 Oct 1991 | 23 Jul 1999 | British | 84 years |
| Peter Walthall | Director | 25 Aug 2005 | 28 May 2008 | British | 71 years |
| Robert Arthur Heath | Director | 22 Jul 2005 | 30 Apr 2006 | British | 69 years |
| Robert Vincent Walker | Director | 9 Jan 2008 | 24 May 2013 | British | 68 years |
| Stephen Hughes | Secretary | 4 Jan 2005 | 30 Mar 2012 | British | - |
| Stephen John Waite | Director | 9 Jan 2008 | 1 Jul 2013 | British | 74 years |
| Stuart Edward Curl | Director | 5 Dec 2014 | 31 May 2016 | British | 65 years |
| Thomas Allan Edgcumbe | Director | 14 Aug 2017 | 28 Feb 2022 | British | 46 years |
| Victoria Mackenzie Skene | Director | 1 Jan 2004 | 23 Jul 2005 | British | 59 years |
| William Owen Aitchison | Director | 12 Oct 2012 | 30 May 2014 | British | 72 years |