| Adam Alexander Crozier | Director | 4 Mar 2003 | 31 Mar 2010 | British | 62 years |
| Alan Ronald Cook | Director | 1 Mar 2006 | 15 Mar 2010 | British | 73 years |
| Allan Leslie Leighton | Director | 2 Apr 2001 | 25 Mar 2009 | British | 73 years |
| Anthony David Mccarthy | Director | 28 Jan 2003 | 7 Dec 2007 | British | 70 years |
| Anthony John Roberts | Director | 24 Jan 2001 | 30 Dec 2002 | British | 82 years |
| Arthur Leslie Owen | Director | 1 Apr 2012 | 25 Sept 2013 | United Kingdom | 77 years |
| Catherine Jane Keers | Director | 1 Apr 2012 | 25 Sept 2013 | British | 61 years |
| Charlotte Emma Gilthorpe | Director | 7 Oct 2024 | 9 Jun 2025 | British | 56 years |
| David Anthony Currie | Director | 1 Apr 2012 | 30 Aug 2012 | British | 80 years |
| David Burden | Director | 28 Jan 2003 | 31 Jul 2007 | British | 79 years |
| David John Mills | Director | 15 Apr 2002 | 31 Dec 2005 | British | 82 years |
| David John Smith | Director | 6 Apr 2010 | 13 Jun 2011 | British | 62 years |
| Donald Hood Brydon | Director | 27 Jan 2009 | 31 Aug 2015 | British | 81 years |
| Drusilla Charlotte Jane Rowe | Nominee Director | 10 Jan 2001 | 22 Jan 2001 | British | 65 years |
| Eleanor Jane Zuercher | Nominee Director | 10 Jan 2001 | 22 Jan 2001 | British | 63 years |
| Eleanor Silver | Director | 22 Jan 2001 | 24 Jan 2001 | British | 52 years |
| Elmar Toime | Director | 4 Mar 2003 | 16 Nov 2004 | Australia | 79 years |
| Emily Shiu Wai Pang | Secretary | 1 Feb 2014 | 26 Jun 2015 | British | - |
| Ian Barnet Duncan | Director | 1 Sept 2006 | 15 Jun 2010 | British | 65 years |
| Ian Roy Griffiths | Director | 6 Feb 2006 | 30 Apr 2007 | British | 76 years |
| Janice May Babiak | Director | 1 Mar 2013 | 25 Sept 2013 | American / British | 68 years |
| Jeffrey Robert Triggs | Director | 22 Jan 2001 | 24 Jan 2001 | British | 66 years |
| Jeremy Ewart Cope | Director | 26 Mar 2001 | 14 Nov 2003 | British | 75 years |
| John Morley Lloyd | Director | 26 Mar 2001 | 25 Mar 2003 | English | 78 years |
| John Murray Allan | Director | 14 Jan 2013 | 25 Sept 2013 | British | 78 years |
| Jonathan Evans | Secretary | 24 Jan 2001 | 27 May 2010 | British | - |
| Jonathan Varley Millidge | Secretary | 27 May 2010 | 31 Jan 2014 | British | - |
| Kevin Raymond Williams | Director | 28 Jan 2003 | 17 Sept 2003 | British | 78 years |
| Kulbinder Kaur Dosanjh | Secretary | 27 Jun 2015 | 1 May 2019 | - | - |
| Maria Luisa Cassoni | Director | 1 Feb 2001 | 17 Nov 2005 | British | 75 years |
| Mark Amsden | Secretary | 1 May 2019 | 30 Sept 2024 | - | - |
| Mark Amsden | Director | 2 Sept 2020 | 30 Sept 2024 | Australian | 63 years |
| Mark Vincent Higson | Director | 5 Nov 2007 | 24 Jul 2014 | British | 70 years |
| Matthew John Lester | Director | 24 Nov 2010 | 20 Jul 2017 | British | 63 years |
| Michael John Jeavons | Director | 18 May 2016 | 18 Mar 2020 | British | 57 years |
| Michael John Jeavons | Director | 2 Sept 2020 | 18 Jan 2024 | British | 57 years |
| Michael John Kinski | Director | 26 Mar 2001 | 12 Feb 2002 | British | 74 years |
| Miles Howard Templeman | Director | 26 Mar 2001 | 25 Mar 2003 | British | 79 years |
| Moya Marguerite Greene | Director | 15 Jul 2010 | 8 Jun 2018 | Canadian | 72 years |
| Neville Clifford Bain | Director | 24 Jan 2001 | 31 Dec 2001 | British | 86 years |
| Nicholas Wenham Horler | Director | 1 Apr 2012 | 25 Sept 2013 | British | 67 years |
| Orna Gabrielle Ni-chionna | Director | 1 Apr 2012 | 25 Sept 2013 | Irish | 70 years |
| Paul Andrew Rich | Director | 28 Jan 2003 | 14 Sept 2004 | British | 70 years |
| Paul Bateson | Director | 28 Jan 2003 | 14 Sept 2004 | British | 77 years |
| Paul Colbeck Murray | Director | 1 Apr 2012 | 25 Sept 2013 | British | 65 years |
| Peter James Long | Director | 1 Sept 2015 | 27 Sept 2016 | British | 74 years |
| Rico Back | Director | 8 Jun 2018 | 15 May 2020 | German | 72 years |
| Rosemary Prudence Thorne | Director | 26 Mar 2001 | 25 Mar 2004 | British | 74 years |
| Sally Ashford | Director | 16 Apr 2020 | 2 Sept 2020 | British | 56 years |
| Simon Thompson | Director | 11 Jan 2021 | 12 May 2023 | British | 60 years |
| Stuart Campbell Simpson | Director | 20 Jul 2017 | 11 Jan 2021 | British | 59 years |
| Trusec Limited | Corporate Nominee Secretary | 10 Jan 2001 | 24 Jan 2001 | United Kingdom | - |
| Vanessa Leeson | Director | 28 Jan 2003 | 14 Sept 2004 | British | 67 years |