| Alan Peter Fordyce | Director | 21 Dec 2009 | 27 Sept 2013 | British | 59 years |
| Andrew David Cowan | Director | 28 Apr 2011 | 5 Dec 2012 | British | 60 years |
| Angela Louise Roshier | Director | 29 Jan 2010 | 13 May 2010 | British | 51 years |
| Anna Louise Dellis | Director | 13 May 2010 | 22 Jan 2015 | British | 53 years |
| Christine Truesdale | Director | 6 Oct 2009 | 7 Oct 2009 | British | 66 years |
| David Fulton Gilmour | Director | 1 Nov 2015 | 3 Jan 2020 | British | 63 years |
| Gary Martin Steven | Director | 1 Jul 2021 | 28 Sept 2022 | British | 49 years |
| Hannah O'gorman | Director | 17 Aug 2011 | 1 Nov 2015 | British | 55 years |
| Infrastructure Managers Limited | Corporate Secretary | 1 Apr 2016 | 31 Mar 2022 | United Kingdom | - |
| James Band | Secretary | 9 Apr 2015 | 1 Apr 2016 | - | - |
| John Ivor Cavill | Director | 24 Feb 2016 | 3 Jan 2020 | British | 54 years |
| John Mcdonagh | Director | 27 Sept 2013 | 16 Nov 2017 | British | 57 years |
| John Stephen Gordon | Director | 24 Feb 2016 | 3 Jan 2020 | British | 64 years |
| Maclay Murray & Spens Llp | Corporate Secretary | 6 Oct 2009 | 21 Dec 2009 | United Kingdom | - |
| Michael Joseph Ryan | Director | 27 Sept 2013 | 24 Feb 2016 | Irish | 60 years |
| Neil Edmund King | Director | 29 Jan 2010 | 2 Aug 2011 | British | 63 years |
| Peter Kenneth Johnstone | Secretary | 21 Dec 2009 | 9 Apr 2015 | British | - |
| Philip Joseph White | Director | 29 Jan 2010 | 15 May 2014 | British | 64 years |
| Richard William Francis Burge | Director | 9 Apr 2015 | 8 May 2019 | British | 67 years |
| Rory William Christie | Director | 16 Nov 2017 | 1 Jul 2021 | British | 68 years |
| Steven Lyon | Director | 21 Dec 2009 | 28 Apr 2011 | British | 64 years |
| Vindex Limited | Corporate Director | 6 Oct 2009 | 21 Dec 2009 | United Kingdom | - |
| Vindex Services Limited | Corporate Director | 6 Oct 2009 | 21 Dec 2009 | United Kingdom | - |
| William George Robertson | Director | 21 Dec 2009 | 27 Sept 2013 | British | 81 years |
