| Adrian David Unitt | Director | 19 Mar 2009 | 23 May 2013 | British | 63 years |
| Adriano Maio | Director | 3 Nov 2016 | 2 Mar 2022 | British | 45 years |
| Alan John Avey | Director | 20 Dec 2013 | 3 Nov 2016 | British | 56 years |
| Andrew Thornton Brady | Director | 1 May 2000 | 30 Nov 2008 | British | 62 years |
| Anthony Peter Moul | Secretary | 1 Feb 1993 | 1 Jul 1994 | British | - |
| Anthony William Pidgley | Director | 6 Dec 1994 | 8 Jul 2005 | British | 79 years |
| Benjamin Michael O'rourke | Director | 20 Apr 2011 | 28 Sept 2012 | Australian | 53 years |
| Brian Wynne Evans | Director | 1 May 2000 | 24 Jan 2003 | British | 66 years |
| Capita Company Secretarial Services Limited | Corporate Secretary | 1 Sept 2013 | 28 Aug 2015 | United Kingdom | - |
| Caroline Lynden Saville | Director | 27 Feb 2003 | 19 May 2006 | British | 55 years |
| Claire Marianne Pettett | Director | 9 Jun 2014 | 3 Nov 2016 | British | 51 years |
| Colin Hart | Director | 13 Jan 1997 | 19 May 2006 | British | 80 years |
| David John Teague | Director | 1 May 2001 | 27 Feb 2003 | British | 63 years |
| David John Teague | Director | 16 May 2003 | 31 Jan 2009 | British | 63 years |
| David John Walker | Director | 7 Jan 2003 | 26 Aug 2003 | British | 67 years |
| David Norman Atkinson | Director | 1 May 1994 | 20 Nov 1995 | British | 80 years |
| David William Jackson | Director | 1 Feb 1993 | 10 Sept 1998 | British | 82 years |
| Elizabeth Taylor | Secretary | 12 Feb 2004 | 8 Jul 2005 | British | - |
| Geoffrey Dickens | Director | 13 Jan 1997 | 1 Nov 2001 | British | 77 years |
| Geoffrey Hutchinson | Director | 1 Jul 1994 | 31 Jul 2010 | British | 68 years |
| Geoffrey Jackson-clark | Director | 1 Feb 1993 | 17 Jun 1993 | British | 81 years |
| George Robert Walker | Director | 1 May 1994 | 20 Nov 1995 | British | 78 years |
| Georgina Jane Scott | Director | 20 Dec 2013 | 9 Jun 2014 | British | 51 years |
| Iain Cameron Davidson | Director | 27 Feb 2003 | 24 Sept 2003 | British | 67 years |
| Ian Fogg | Director | 17 Nov 1998 | 1 Nov 2001 | British | 78 years |
| James Randle Heyworth | Director | 1 May 2001 | 19 Aug 2002 | British | 58 years |
| Jennifer Draper | Secretary | 3 Nov 2016 | 21 Dec 2016 | - | - |
| Jeremy Neil Pollitt | Director | 13 Jan 1997 | 31 May 1998 | British | 65 years |
| Joanne Marie Day | Director | 28 Aug 2009 | 30 Sept 2011 | British | 53 years |
| John David Clark | Director | 23 Apr 2018 | 31 Oct 2023 | British | 56 years |
| John Stephen Kenny | Director | 27 Feb 2003 | 24 Sept 2003 | British | 56 years |
| John Stephen Kenny | Secretary | 27 Feb 2003 | 24 Sept 2003 | British | - |
| Justin Davies | Director | 30 Jan 2019 | 18 Feb 2021 | Australian | 50 years |
| Justine Samantha Elliott | Director | 4 Jun 2009 | 30 Jun 2010 | British | 51 years |
| Keith Alan Prior | Director | 4 Sept 1997 | 25 Oct 2000 | British | 76 years |
| Lee Francis Wood | Director | 27 Feb 2003 | 31 Dec 2003 | British | 54 years |
| Malcolm Powell | Director | 1 Feb 1993 | 22 Apr 1999 | British | 87 years |
| Neil Clifford Taylor | Director | 1 Sept 2007 | 31 Jan 2009 | British | 67 years |
| Nicholas Frank Carter | Director | 1 May 1993 | 30 Sept 2002 | British | 64 years |
| Peter Dominic Leonard | Director | 18 Feb 2021 | 31 Oct 2024 | British | 62 years |
| Peter John Francis | Director | 1 Feb 1993 | 1 Dec 1992 | British | 73 years |
| Peter Ross Mcneillie | Director | 3 Mar 2003 | 18 Oct 2007 | British | 73 years |
| Peter Vincent Vella | Director | 28 Sept 2006 | 30 Jun 2009 | British | 60 years |
| Rebecca Jayne Seeley | Director | 3 Nov 2016 | 23 Apr 2018 | British | 46 years |
| Richard Andrew Coppell | Director | 28 Sept 2012 | 31 May 2013 | British | 59 years |
| Richard Edward Oakes | Director | 5 Mar 2004 | 19 May 2006 | British | 59 years |
| Richard John Cook | Director | 23 May 2013 | 31 Jan 2019 | British | 55 years |
| Richard Justin Starkey | Director | 15 Oct 1997 | 20 Apr 2011 | British | 65 years |
| Robert Charles Grenville Perrins | Director | 11 Aug 2004 | 8 Jul 2005 | British | 61 years |
| Roger St John Hulton Lewis | Director | 1 Dec 1992 | 1 Feb 1995 | British | 79 years |
| Simon Christopher Bridge | Director | 23 May 2006 | 30 Jun 2009 | British | 66 years |
| Simon Robert Burrows | Director | 1 Aug 2004 | 26 Sept 2005 | British | 64 years |
| Stephen John Muttock | Director | 23 May 2006 | 30 Jun 2009 | British | 70 years |
| Stephen John Wheatcroft | Director | 1 Nov 1994 | 30 Jun 2009 | British | 69 years |
| Stephen John Wheatcroft | Secretary | 1 May 1994 | 30 Jun 2009 | British | - |
| Thanalakshmi Janandran | Secretary | 8 Jul 2005 | 16 Aug 2013 | British | - |