| Aidan Christopher Smith | Director | 3 May 2001 | 31 Mar 2008 | British | 67 years |
| Barbara Gibbes | Director | 16 Jan 2017 | 16 Aug 2019 | British | 51 years |
| Brian Anthony Jolly | Director | 15 Feb 1994 | 10 Aug 1994 | British | 81 years |
| Caroline Kirby | Director | 11 Oct 2005 | 17 Oct 2011 | British | 58 years |
| Colin Flinn | Director | 4 Sept 2018 | 15 Apr 2020 | British | 57 years |
| Colin Flinn | Director | 19 Nov 2020 | 1 Jul 2021 | British | 57 years |
| David Andrew Fischel | Director | 15 Feb 1994 | 26 Apr 2019 | British | 68 years |
| Douglas Ross Leslie | Director | 11 Oct 1994 | 27 Mar 2001 | British | 79 years |
| Edward Matthew Giles Roberts | Director | 13 Aug 2010 | 15 Apr 2020 | British | 63 years |
| Hackwood Directors Limited | Corporate Nominee Director | 17 Dec 1993 | 15 Feb 1994 | United Kingdom | - |
| Hackwood Secretaries Limited | Corporate Nominee Secretary | 17 Dec 1993 | 15 Feb 1994 | United Kingdom | - |
| Hugh Michael Ford | Director | 3 Nov 2011 | 15 Apr 2020 | British | 59 years |
| Jeremy Stephen Bottle | Secretary | 15 Feb 1994 | 7 Jan 2000 | British | - |
| John George Abel | Director | 15 Feb 1994 | 30 Sept 2005 | British | 82 years |
| Jonathan Mark Ainsley | Director | 1 Mar 2007 | 31 Mar 2009 | British | 61 years |
| Julian Nicholas Wilkinson | Director | 4 Sept 2018 | 31 Jan 2020 | British | 63 years |
| Katharine Ann Bowyer | Director | 17 Sept 2014 | 30 Sept 2016 | British | 57 years |
| Kathryn Anne Grant | Director | 1 Mar 2007 | 31 Mar 2009 | British | 53 years |
| Kathryn Anne Grant | Director | 4 Sept 2018 | 15 Apr 2020 | British | 53 years |
| Kathryn Anne Grant | Director | 19 Nov 2020 | 1 Jul 2021 | British | 53 years |
| Kay Elizabeth Chaldecott | Director | 3 May 2001 | 30 Sept 2011 | British | 64 years |
| Loraine Woodhouse | Director | 3 Nov 2008 | 18 Jun 2010 | British | 58 years |
| Martin David Ellis | Director | 11 Oct 2005 | 31 Mar 2009 | British | 62 years |
| Martin David Ellis | Director | 13 Aug 2010 | 31 Dec 2015 | British | 62 years |
| Martin Richard Breeden | Director | 1 Mar 2007 | 31 Mar 2009 | British | 59 years |
| Martin Richard Breeden | Director | 4 Sept 2018 | 19 Nov 2020 | British | 59 years |
| Michael Rapp | Director | 15 Feb 1994 | 3 May 2001 | British | 91 years |
| Minakshi Kidia | Director | 16 Aug 2019 | 15 Apr 2020 | British | 48 years |
| Nick Round | Director | 4 Sept 2018 | 15 Apr 2020 | British | 64 years |
| Peter Charles Barton | Director | 23 Jun 2004 | 12 Sept 2006 | British | 66 years |
| Peter Colin Badcock | Director | 23 Dec 1994 | 21 Oct 2005 | British | 82 years |
| Peter Weir | Director | 3 Nov 2011 | 17 Sept 2014 | British | 61 years |
| Philip Duncan Wardle | Director | 1 Mar 2007 | 9 Jun 2008 | British | 63 years |
| Rebecca Mary Sarah Elizabeth Ryman | Director | 4 Sept 2018 | 19 Nov 2020 | British | 51 years |
| Richard Malcolm Cable | Director | 3 May 2001 | 31 Oct 2008 | British | 67 years |
| Sean Crosby | Director | 16 Aug 2019 | 1 Jul 2021 | Canadian | 38 years |
| Susan Marsden | Secretary | 7 Feb 2000 | 31 Dec 2020 | British | - |
| Trevor Pereira | Director | 13 Nov 2007 | 31 Mar 2009 | British | 61 years |
| Trevor Pereira | Director | 13 Aug 2010 | 31 Jan 2020 | British | 61 years |