| Andrew James Morrish | Director | 23 Mar 2018 | 16 Apr 2021 | British | 58 years |
| Andrew Michael Wilkinson | Director | 2 Nov 2020 | 28 Jul 2023 | British | 56 years |
| Aviva Company Secretarial Services Limited | Corporate Secretary | 1 Jul 1998 | 12 Jul 2007 | United Kingdom | - |
| Bridget Fiona Mcintyre | Director | 31 Mar 2001 | 9 Jun 2005 | British | 65 years |
| Caroline Francis Ramsay | Director | 23 Jan 2004 | 26 Apr 2004 | British | 64 years |
| Claire Margaret Valentine | Secretary | 15 Nov 2013 | 12 Dec 2016 | - | - |
| Clifford James Abrahams | Director | 26 Jul 2010 | 22 Oct 2013 | British | 59 years |
| Colm Joseph Holmes | Director | 20 Jun 2014 | 30 Jun 2016 | Irish | 60 years |
| Cornelis Antonius Carolus Maria Schrauwers | Director | 1 Dec 1998 | 14 Nov 2000 | Dutch | 79 years |
| David Gavin Macdonald | Director | 1 Dec 1998 | 14 Nov 2000 | British | 73 years |
| David John Lovely | Director | 27 Mar 2015 | 23 Mar 2018 | American | 64 years |
| David John Lovely | Director | 27 Jul 2021 | 22 Nov 2021 | American | 64 years |
| David John Ramsay Mcmillan | Director | 11 Aug 2008 | 1 Sept 2008 | British | 60 years |
| David John Ramsay Mcmillan | Director | 4 Nov 2008 | 2 Jan 2009 | British | 60 years |
| David John Ramsay Mcmillan | Director | 23 Feb 2010 | 17 Sept 2012 | British | 60 years |
| David Kenneth Watson | Director | 2 Jan 2009 | 31 Mar 2010 | British | 67 years |
| Dominic John Clayden | Director | 24 Feb 2012 | 1 Apr 2013 | British | 60 years |
| Igal Mordeciah Mayer | Director | 13 Jul 2007 | 31 Dec 2009 | Israeli | 65 years |
| Igal Mordeciah Mayer | Director | 14 Nov 2000 | 31 Mar 2001 | Canadian | 65 years |
| Jacqueline Hunt | Director | 1 Jan 2007 | 4 Sept 2008 | British | 58 years |
| James Robert Sturman | Director | 28 Mar 2023 | 31 Jul 2024 | English | 46 years |
| Jane Carmel Poole | Director | 23 Aug 2021 | 9 Apr 2024 | British | 46 years |
| Jennifer Jane Wilman | Secretary | 12 Aug 2013 | 15 Nov 2013 | - | - |
| John Gordon Thomas Carter | Director | 19 Mar 1992 | 31 Dec 1993 | British | 89 years |
| John Howard Webb | Director | 19 Mar 1992 | 31 Dec 1993 | British | 92 years |
| John Robert Kitson | Director | 9 May 2006 | 31 Mar 2010 | British | 66 years |
| John Seaton | Director | 19 Jun 2006 | 9 Oct 2006 | British | 68 years |
| John Seaton | Director | 13 Aug 2007 | 1 Sept 2007 | British | 68 years |
| Julian Ray Woodford | Director | 22 Oct 2013 | 20 Jun 2014 | British | 63 years |
| Keith Nigel Grant | Director | 19 Mar 1992 | 30 Jun 1998 | British | 72 years |
| Keith Nigel Grant | Secretary | 19 Mar 1992 | 30 Jun 1998 | British | - |
| Mark Steven Hodges | Director | 31 Mar 2001 | 9 May 2006 | British | 61 years |
| Martin Graham Sykes | Director | 1 Apr 2013 | 23 Mar 2018 | British | 63 years |
| Michael Nicholas Biggs | Director | 14 Nov 2000 | 31 Mar 2001 | British | 74 years |
| Patrick Joseph Robert Snowball | Director | 14 Nov 2000 | 9 May 2006 | British | 76 years |
| Paul Anthony Found | Director | 1 Dec 1998 | 14 Nov 2000 | British | 78 years |
| Paul Senior | Director | 25 May 2021 | 7 Dec 2022 | British | 53 years |
| Peter Geoffrey Ward | Director | 1 Jan 1994 | 30 Nov 1998 | English | 84 years |
| Peter James Foster | Director | 1 Jan 1994 | 30 Nov 1998 | British | 80 years |
| Philip Charles Easter | Director | 9 Jun 2005 | 1 Jan 2007 | British | 73 years |
| Richard Andrew Whitaker | Director | 1 Jul 1998 | 30 Nov 1998 | British | 74 years |
| Richard Harold Spicker | Secretary | 12 Jul 2007 | 12 Aug 2013 | British | - |
| Robert Ian Leyman Townend | Director | 22 Nov 2016 | 20 Dec 2019 | British | 59 years |
| Robert Newton | Director | 1 Dec 1998 | 14 Nov 2000 | British | 76 years |
| Robin Lloyd Spencer | Director | 19 Sept 2012 | 11 Oct 2013 | British | 56 years |
| Sarah Maillet | Director | 5 Feb 2020 | 18 Dec 2020 | British | 60 years |
| Sean Egan | Director | 1 Apr 2010 | 24 Feb 2012 | Irish | 70 years |
| Simon Christopher Machell | Director | 9 May 2006 | 12 Jul 2007 | British | 63 years |
| Thomas James Latter | Director | 4 May 2018 | 8 Nov 2020 | British | 49 years |
| Thomas James Latter | Director | 22 Mar 2021 | 23 Aug 2021 | British | 49 years |
| Waseem Ullah Malik | Director | 28 Feb 2023 | 25 Apr 2025 | British | 50 years |