| Aart Dane | Director | 27 Jun 2014 | 16 Apr 2018 | Dutch | 54 years |
| Abdul Hamid | Director | 12 Jun 2017 | 23 Jul 2018 | British | 60 years |
| Abdul Hamid | Director | 29 Jan 2020 | 29 Oct 2021 | British | 60 years |
| Alan Edward Birch | Director | 2 Jul 2003 | 27 Aug 2004 | British | 56 years |
| Alan Edward Birch | Director | 8 Nov 2004 | 7 Dec 2006 | British | 56 years |
| Alan Edward Birch | Director | 2 Jan 2008 | 25 Mar 2014 | British | 56 years |
| Andrew John Sutton | Director | 16 May 2003 | 11 Feb 2004 | British | 70 years |
| Barry Simon Williams | Director | 22 Dec 2005 | 14 Aug 2007 | British | 56 years |
| Bruce Warren Dalgleish | Director | 22 Dec 2005 | 7 Dec 2006 | British | 59 years |
| Bryan Robin Geoffrey Gilbert Smith | Director | 20 Oct 2000 | 28 Jun 2002 | British | 82 years |
| Christopher John Blundell | Director | 1 Oct 2008 | 12 Jun 2017 | British | 60 years |
| David Francis Lindesay | Director | 2 Jan 2008 | 1 Oct 2008 | British | 66 years |
| Geoffrey Keith Howard Mason | Director | 5 Jun 2000 | 16 May 2003 | British | 72 years |
| Janet Elizabeth Park | Director | 1 Feb 2023 | 31 May 2023 | British | 60 years |
| Neil Rae | Director | 25 Mar 2014 | 23 Jul 2018 | British | 55 years |
| Patrick Hugh Gardiner | Director | 16 May 2003 | 7 Jun 2004 | British | 77 years |
| Paul George Milner | Director | 22 Jan 2003 | 16 May 2003 | British | 65 years |
| Paul George Milner | Director | 7 Jun 2004 | 15 Jun 2004 | British | 65 years |
| Paul Mcculloch | Director | 8 Nov 2004 | 18 Dec 2006 | British | 61 years |
| Richard Little | Director | 1 Jun 2023 | 1 Sept 2024 | British | 47 years |
| Robert Nigel Johnson | Director | 11 Feb 2004 | 15 Jun 2004 | British | 68 years |
| Robert Sean Mcclatchey | Director | 20 Oct 2000 | 22 Dec 2005 | British | 61 years |
| Robert William Kendall | Director | 5 Jun 2000 | 16 May 2003 | British | 73 years |
| Secretariat Services Limited | Corporate Secretary | 5 Jun 2000 | 1 Sept 2005 | United Kingdom | - |
| Steven Mcgeown | Director | 23 Jul 2018 | 1 Nov 2022 | British | 41 years |
| William Robert Doughty | Director | 26 Aug 2004 | 2 Jan 2008 | British | 58 years |