| Alastair James Riddell | Director | 18 Nov 2013 | 22 Sept 2015 | Uk | 76 years |
| Ali Mortazavi | Director | 2 Aug 2012 | 4 Jun 2018 | British | 54 years |
| Alistair William Gray | Director | 12 Nov 2015 | 30 Apr 2024 | British | 77 years |
| Andrew John Mcglashan Richards | Director | 14 Sept 2016 | 16 Apr 2019 | British | 65 years |
| Annalisa Jenkins | Director | 16 Oct 2017 | 20 Aug 2018 | British | 60 years |
| Annette Clancy | Director | 1 Jul 2008 | 2 Aug 2012 | British | 71 years |
| Annie Cheng | Director | 30 May 2013 | 2 Sept 2014 | United States | 49 years |
| Anthony Sedgwick | Director | 9 Feb 2012 | 2 Aug 2012 | British | 70 years |
| Barbara Ruskin | Secretary | 1 Dec 2020 | 28 Sept 2022 | - | - |
| Bernd Otto Wetzel | Director | 11 Jul 2005 | 5 Jan 2010 | German | 81 years |
| Company Directors Limited | Corporate Nominee Director | 18 Nov 1994 | 18 Nov 1994 | United Kingdom | - |
| Cynthia Ann Stanford | Director | 18 Nov 1994 | 25 Mar 1998 | British | 87 years |
| David Anthony Kennard | Director | 12 May 1997 | 17 Jul 2003 | British | 65 years |
| David Charles U'prichard | Director | 11 Jul 2005 | 31 Dec 2011 | American,british | 77 years |
| David Hill | Director | 19 May 2003 | 18 Jun 2004 | New Zealand | 75 years |
| David Horn Solomon | Director | 17 Jul 2018 | 17 Dec 2019 | Canadian | 65 years |
| David John Ellam | Director | 18 Jul 2016 | 9 Jan 2019 | British | 62 years |
| David John Ellam | Secretary | 18 Jul 2016 | 9 Jan 2019 | - | - |
| David Mack | Director | 5 Jan 2010 | 26 Jun 2013 | British | 64 years |
| Duncan Geddes | Director | 21 Aug 2000 | 22 May 2002 | British | 83 years |
| Eric James Boyle | Director | 18 Nov 1994 | 20 May 2004 | British | 72 years |
| Giles Victor Campion | Director | 19 May 2020 | 9 Jun 2020 | British | 71 years |
| Giles Victor Campion | Director | 9 Jun 2020 | 1 Jul 2023 | British | 71 years |
| Graham Arthur William Rook | Director | 18 Nov 1994 | 27 Sept 2001 | British | 79 years |
| Hugh Ronald Peter Reynolds | Director | 20 May 2004 | 5 Jan 2010 | British | 87 years |
| Iain Gladstone Ross | Director | 7 Jan 2003 | 4 Mar 2003 | British | 71 years |
| Iain Gladstone Ross | Director | 28 May 2004 | 27 Feb 2010 | British | 71 years |
| Iain Nils Hessey Rugheimer | Director | 19 Dec 1994 | 1 Jul 2008 | British | 72 years |
| James Lawrence Ede-golightly | Director | 25 Apr 2019 | 26 Jun 2025 | British | 46 years |
| James Topper | Director | 5 Jan 2010 | 29 Jul 2011 | British | 63 years |
| Jeffery Scott Vick | Director | 27 Jul 2007 | 17 Jul 2008 | Usa | 63 years |
| Jeremy Anthony Philip Randall | Director | 1 Jul 2008 | 18 Nov 2013 | British | 61 years |
| Jeremy Lawrence Curnock Cook | Director | 11 Jul 2005 | 5 Jan 2010 | British | 76 years |
| John Anthony Lambert | Director | 18 Sept 2000 | 20 May 2004 | British | 73 years |
| John Lawson Stanford | Director | 18 Nov 1994 | 27 Sept 2001 | British | 87 years |
| John Pattison | Director | 18 Nov 1994 | 31 Aug 1999 | British | 83 years |
| John Wilson Carswell | Director | 18 Nov 1994 | 1 Mar 1995 | British | 88 years |
| Jon Melvyn Davies | Director | 18 Nov 1994 | 27 Feb 2010 | British | 69 years |
| Jon Melvyn Davies | Secretary | 18 Nov 1994 | 27 Feb 2010 | British | - |
| Lars Georg Emanuel Karlsson | Director | 8 Jan 2015 | 5 Apr 2016 | Swedish And Us Joint | 65 years |
| Mark Rothera | Director | 14 Sept 2020 | 22 Feb 2022 | British | 63 years |
| Max Stephen Herrmann | Secretary | 14 May 2010 | 2 Aug 2012 | - | - |
| Max Stephen Herrmann | Director | 14 May 2010 | 2 Aug 2012 | British | 59 years |
| Michael Davidson | Director | 6 Jan 2021 | 11 Aug 2025 | American | 69 years |
| Michael Mohamed Tarik Khan | Director | 18 Sept 2012 | 17 Jun 2016 | British | 65 years |
| Philip Haworth | Director | 5 Jan 2010 | 1 Aug 2011 | British | 70 years |
| Robert Quinn | Secretary | 9 Jan 2019 | 1 Dec 2020 | - | - |
| Sarah Murphy | Secretary | 28 Sept 2022 | 22 Dec 2023 | - | - |
| Simon John Sturge | Director | 21 Aug 2013 | 18 Jan 2016 | Uk | 66 years |
| Simon Oliver Henry Warren | Director | 18 Nov 1994 | 25 Mar 1998 | British | 68 years |
| Stephen Barry Parker | Director | 18 Nov 2013 | 25 Apr 2019 | United Kingdom | 67 years |
| Steven Romano | Director | 29 Jul 2019 | 1 Apr 2023 | American | 66 years |
| Stuart John Myles Collinson | Director | 18 Jan 2016 | 5 Apr 2016 | British | 65 years |
| Temple Secretaries Limited | Corporate Nominee Director | 18 Nov 1994 | 18 Nov 1994 | - | - |
| Temple Secretaries Limited | Corporate Nominee Secretary | 18 Nov 1994 | 18 Nov 1994 | - | - |
| Thomas Christely | Director | 19 Sept 2011 | 9 Feb 2012 | German | 66 years |
| Thomas Lang | Director | 10 Feb 1998 | 21 May 2002 | British | 76 years |
| Tim Freeborn | Secretary | 2 Aug 2012 | 19 Jul 2016 | - | - |
| Timothy Chard | Director | 21 Feb 1997 | 20 Jul 2003 | English | 88 years |
| Timothy Charles Adrian Freeborn | Director | 8 Oct 2012 | 17 Jun 2016 | British | 67 years |