| Andrew Philip | Secretary | 1 Sept 2014 | 15 Feb 2019 | - | - |
| Angus Stuart Armstrong | Secretary | 15 Feb 2019 | 21 Dec 2021 | - | - |
| Barry John Carruthers | Director | 25 Aug 2023 | 26 Feb 2025 | British | 45 years |
| Christopher Michael Stevens | Director | 28 Sept 2004 | 19 Apr 2015 | British | 66 years |
| David Anthony Pringle | Director | 29 Jan 2009 | 21 May 2012 | British | 64 years |
| David Neil Morrison | Director | 15 Dec 2006 | 30 Jul 2007 | British | 68 years |
| Donald James Mcpherson | Secretary | 29 Sept 2004 | 30 Jun 2006 | British | - |
| Emilio Hernandez | Secretary | 24 Nov 2010 | 21 May 2012 | British | - |
| Fiona Coyle | Secretary | 21 Dec 2021 | 9 Aug 2023 | - | - |
| Graham Paul Ramsbottom | Director | 28 Sept 2004 | 29 Jan 2009 | British | 61 years |
| Heather Chalmers White | Director | 15 Feb 2019 | 25 Aug 2023 | British | 62 years |
| John Heasley | Director | 29 Sept 2004 | 15 Dec 2006 | British | 52 years |
| Jonathan Thomas Kirkwood Cole | Director | 9 Oct 2008 | 24 Nov 2010 | British | 49 years |
| Jonathan Thomas Kirkwood Cole | Secretary | 9 Oct 2008 | 24 Nov 2010 | British | - |
| Keith Stuart Anderson | Director | 23 Jun 2005 | 7 Oct 2011 | British | 62 years |
| Kenneth Peberdy | Director | 7 Oct 2011 | 23 Mar 2018 | British | 66 years |
| Marie Isobel Ross | Secretary | 26 Oct 2007 | 9 Oct 2008 | British | - |
| Md Directors Limited | Corporate Nominee Director | 2 Aug 2004 | 29 Sept 2004 | United Kingdom | - |
| Md Secretaries Limited | Corporate Nominee Secretary | 2 Aug 2004 | 29 Sept 2004 | United Kingdom | - |
| Nigel Bryn Holden | Director | 21 May 2012 | 9 Jun 2022 | British | 59 years |
| Rhona Gregg | Secretary | 30 Jun 2006 | 26 Oct 2007 | British | - |
| Robert John Ellis | Director | 19 Apr 2015 | 5 May 2017 | British | 61 years |
| Roger Seshan | Director | 30 Jul 2007 | 1 Feb 2008 | British | 56 years |
| Roy Scott | Director | 24 Nov 2010 | 31 Jan 2019 | British | 62 years |
| Seumus O'gorman | Secretary | 21 May 2012 | 1 Sept 2014 | British | - |
| Stuart Mason | Director | 5 Sept 2018 | 7 Oct 2021 | British | 61 years |
| Susan Mary Reilly | Director | 29 Sept 2004 | 23 Jun 2005 | British | 65 years |
| Yusuf Patel | Director | 10 Dec 2021 | 1 May 2023 | British | 49 years |
