| Aberdeen Asset Management Plc | Corporate Secretary | 22 Oct 2014 | 5 Jun 2015 | - | - |
| Alice Nisbet | Director | 10 Aug 2012 | 11 Sept 2012 | British | 44 years |
| Andrew Brian Deacon | Director | 14 Feb 2017 | 12 Aug 2019 | British | 46 years |
| Andrew David Clapp | Director | 23 Oct 2019 | 27 Aug 2021 | British | 51 years |
| Edward Arthur Wilson | Director | 5 Dec 2017 | 23 Oct 2019 | British | 61 years |
| Gershon Daniel Cohen | Director | 6 Sept 2012 | 5 Dec 2017 | British | 62 years |
| Graeme Robert Andrew Shankland | Director | 15 Oct 2007 | 4 Aug 2010 | British | 66 years |
| Graham John Mcdonald | Director | 30 Jan 2008 | 25 Sept 2009 | British | 66 years |
| Graham John Mcdonald | Director | 3 Jun 2010 | 6 Sept 2012 | British | 66 years |
| Infrastructure Managers Limited | Corporate Secretary | 25 Jan 2019 | 25 Jan 2019 | United Kingdom | - |
| Infrastructure Managers Limited | Corporate Secretary | 1 Feb 2019 | 21 Feb 2022 | United Kingdom | - |
| Instant Companies Limited | Corporate Nominee Director | 15 Oct 2007 | 30 Jan 2008 | United Kingdom | - |
| Ivan Hong-yee Wong | Director | 6 Sept 2012 | 5 Dec 2017 | British | 47 years |
| James Anthony O'halloran | Director | 23 Dec 2015 | 14 Feb 2017 | British | 51 years |
| Jennifer Elizabeth Nielsen | Secretary | 30 Jan 2008 | 2 Jul 2012 | British | - |
| Karen Margaret Bothwell | Director | 3 Jun 2010 | 2 Jul 2012 | British | 64 years |
| Kevin Brown | Director | 8 Sept 2015 | 23 Dec 2015 | British | 50 years |
| Lloyds Secretaries Limited | Corporate Secretary | 2 Jul 2012 | 22 Oct 2014 | United Kingdom | - |
| Mark William Hammond | Director | 30 Jan 2008 | 4 Aug 2010 | British | 58 years |
| Mohammed Sameer Amin | Director | 6 Sept 2012 | 5 Dec 2017 | British | 53 years |
| Nicholas Tommy Cole | Director | 5 Dec 2017 | 30 Apr 2019 | British | 48 years |
| Pamela Simone Dickson | Director | 2 Jul 2012 | 6 Sept 2012 | Scottish | 59 years |
| Paula Burgess | Director | 5 Dec 2017 | 18 Dec 2020 | British | 51 years |
| Pinecroft Corporate Services Limited | Corporate Director | 18 Dec 2020 | 3 Mar 2025 | United Kingdom | - |
| State Street (guernsey) Limited | Corporate Secretary | 5 Jun 2015 | 25 Jan 2019 | United Kingdom | - |
| Swift Incorporations Limited | Corporate Nominee Secretary | 15 Oct 2007 | 30 Jan 2008 | United Kingdom | - |
| William James Haughey | Director | 6 Sept 2012 | 8 Sept 2015 | British | 52 years |
| William Wordie Stancer | Director | 30 Jan 2008 | 9 Oct 2009 | British | 62 years |
