| Adrian Murphy | Director | 20 Oct 2006 | 4 May 2012 | British | 82 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 | 5 Sept 2007 | 4 Feb 2014 | British | 56 years |
| Amanda Pinnock | Director | 7 Aug 2024 | 28 May 2025 | British | 52 years |
| Andrew John Sutton | Director | 2 Aug 2001 | 11 Feb 2004 | British | 70 years |
| Andrew Matthews | Director | 28 Jun 2002 | 22 Dec 2005 | British | 64 years |
| Bryan Robin Geoffrey Gilbert Smith | Director | 30 Mar 2001 | 28 Jun 2002 | British | 82 years |
| Carole Ann Pattison | Director | 17 Jun 2016 | 8 Sept 2025 | British | 75 years |
| Christopher James Elliott | Director | 30 Mar 2001 | 15 Sept 2003 | British | 76 years |
| Dennis Hullock | Director | 24 Jul 2001 | 20 Oct 2006 | British | 75 years |
| Dennis Hullock | Director | 20 Oct 2006 | 22 Aug 2007 | British | 75 years |
| Elizabeth Dawn Reynolds | Director | 16 Oct 2023 | 7 Aug 2024 | British | 63 years |
| Geoffrey Keith Howard Mason | Director | 5 Jun 2000 | 15 Sept 2003 | British | 72 years |
| Gordon James Wilson | Director | 19 Mar 2001 | 30 Mar 2001 | British | 59 years |
| Henry Lafferty | Director | 30 Mar 2001 | 2 Aug 2001 | British | 73 years |
| Julia Sarah Mccabe | Director | 29 Oct 2012 | 3 Apr 2017 | British | 56 years |
| Karen Rowling | Director | 13 Nov 2012 | 9 May 2016 | British | 56 years |
| Kevin Humphreys | Director | 12 May 2008 | 12 Jan 2009 | British | 63 years |
| Masood Ahmed | Director | 13 Jul 2016 | 23 May 2019 | British | 58 years |
| Molly Walton | Director | 24 Jul 2001 | 27 Aug 2004 | British | 92 years |
| Nigel Wythen Middleton | Director | 15 Sept 2003 | 22 Dec 2005 | British | 70 years |
| Patrick Hugh Gardiner | Director | 19 Mar 2001 | 27 Aug 2004 | British | 77 years |
| Paul Ferguson Fisher | Director | 29 Jun 2016 | 30 Mar 2017 | British | 71 years |
| Paul George Milner | Director | 3 Sept 2004 | 19 Nov 2004 | British | 65 years |
| Paul Mcculloch | Director | 8 Nov 2004 | 10 Mar 2006 | British | 61 years |
| Robert Nigel Johnson | Director | 11 Feb 2004 | 15 Jun 2004 | British | 68 years |
| Robert Sean Mcclatchey | Director | 30 Mar 2001 | 22 Dec 2005 | British | 61 years |
| Robert William Kendall | Director | 5 Jun 2000 | 30 Mar 2001 | British | 73 years |
| Secretariat Services Limited | Corporate Secretary | 5 Jun 2000 | 1 Sept 2005 | United Kingdom | - |
| Shabir Pandor | Director | 18 Aug 2015 | 13 Jul 2016 | British | 61 years |
| Stephen Paul Hornby | Director | 10 Mar 2006 | 7 Dec 2006 | British | 69 years |
| Stephen Paul Hornby | Director | 12 Jan 2009 | 31 May 2023 | British | 69 years |
| Vivienne Rosalind Kendrick | Director | 5 Aug 2011 | 21 May 2015 | British | 77 years |
| Will Simpson | Director | 30 Sept 2021 | 16 Oct 2023 | British | 30 years |
| William Robert Doughty | Director | 26 Aug 2004 | 12 May 2008 | British | 58 years |