| Ancosec Limited | Corporate Secretary | 25 Jun 2007 | 1 Jul 2013 | United Kingdom | - |
| Andrew James Johnston | Director | 30 Jun 2008 | 1 Jul 2013 | British | 68 years |
| Andrew John Cheesman | Director | 23 Mar 2012 | 1 Mar 2016 | British | 59 years |
| Beth Salena Chater | Director | 14 Sept 1998 | 31 Oct 2008 | British | 65 years |
| Christopher Delahunt | Director | 1 Jan 2005 | 31 Dec 2009 | British | 65 years |
| David Mark Johnston Duffield | Director | 14 Sept 1998 | 14 Sept 2007 | British | 77 years |
| David Mark Johnston Duffield | Secretary | 25 Jun 1999 | 23 Jul 2001 | British | - |
| David Russell Workman | Director | 20 Aug 2013 | 15 Jan 2015 | British | 63 years |
| David Stanley Parkes | Director | 1 Jan 2005 | 23 Mar 2012 | British | 63 years |
| Emily Jane Neilson | Director | 17 Jun 2010 | 19 Feb 2015 | British | 51 years |
| Godfrey Alwin Allen | Director | 5 Nov 1992 | 25 Jun 1996 | British | 90 years |
| Gordon Thomas Birdwood | Secretary | 1 Jul 2013 | 15 Jan 2017 | - | - |
| Howard Evans | Director | 16 Sept 2014 | 30 Nov 2019 | British | 60 years |
| Iain Donald Ferguson | Secretary | 5 Nov 1992 | 25 Sept 1996 | British | - |
| Ian Edward Cody | Director | 20 Mar 2019 | 10 Oct 2019 | Irish | 64 years |
| Ian Edward Cody | Director | 6 Jul 2016 | 31 Jan 2019 | Irish | 64 years |
| Jakes David Ferguson | Secretary | 5 Nov 1992 | 23 Mar 1993 | British | - |
| James Joseph Flynn | Director | 5 Mar 2015 | 31 Mar 2019 | Irish | 69 years |
| James Justin Turpin | Director | 11 May 2021 | 3 Nov 2022 | British | 44 years |
| James Justin Turpin | Director | 3 Nov 2022 | 10 Mar 2024 | British | 44 years |
| James Martin Cornell | Director | 31 Dec 2009 | 1 Jul 2013 | British | 52 years |
| James Patrick Hewitt | Director | 7 Mar 2024 | 21 May 2025 | British | 39 years |
| Jane Denise Cann | Director | 5 Nov 1992 | 14 Sept 1998 | British | 67 years |
| Jeffrey Mark Pulsford | Director | 14 Sept 1998 | 30 Jun 2008 | British | 67 years |
| Jonathan David Read | Secretary | 23 Jul 2001 | 25 Jun 2007 | British | - |
| Jonathan Martin Austen | Director | 30 Sept 2006 | 28 May 2008 | British | 70 years |
| Julian Francis Bates | Director | 20 Aug 2013 | 15 Jan 2015 | British | 63 years |
| Lynda Carole Johnstone | Director | 31 Dec 2009 | 18 Jan 2018 | British | 60 years |
| Mark Andrew Reason | Director | 1 Mar 2016 | 3 Nov 2022 | British | 67 years |
| Mark Geoffrey Smith | Director | 19 May 2016 | 30 Nov 2019 | British | 55 years |
| Michael Andrew Tibbetts | Director | 31 Dec 2009 | 17 Jun 2010 | British | 61 years |
| Michael James O'sullivan | Director | 30 Jun 2008 | 31 Dec 2009 | Australian | 60 years |
| Nicholas Andrew Deburgh Jones | Director | 5 Mar 2015 | 19 May 2016 | British | 45 years |
| Nicholas Stuart Granville Murray | Director | 17 Nov 1994 | 14 Sept 1998 | British | 64 years |
| Nigel Howard Pope | Director | 30 Jun 2008 | 31 Dec 2009 | British | 62 years |
| Oliver Smith | Director | 24 Sept 1993 | 17 Nov 1994 | British | 59 years |
| Patrick Deigman | Director | 22 Dec 1992 | 30 Sept 2006 | British | 74 years |
| Paul Thomas Wray | Director | 6 Jul 2016 | 31 Jan 2019 | British | 72 years |
| Piers Christopher Chapman | Director | 1 Jul 2013 | 30 Nov 2019 | British | 55 years |
| Richard James Potter | Director | 17 Jun 2015 | 31 Jul 2017 | British | 60 years |
| Robert Davis | Director | 31 Mar 2019 | 30 Nov 2019 | British | 57 years |
| Robert Paul Reed | Director | 23 May 2011 | 31 Jul 2017 | British | 58 years |
| Roger Barry Johnson | Director | 5 Nov 1992 | 24 Sept 1993 | British | 81 years |
| Sarah Jane Lyne | Secretary | 25 Sept 1996 | 25 Jun 1999 | British | - |
| Satish Mohanlal | Director | 31 Oct 2008 | 30 Sept 2009 | British | 62 years |
| Simon John Newton | Director | 1 Jul 2013 | 30 Nov 2019 | British | 68 years |
| Stephen Jeremy Day | Director | 23 Oct 2018 | 31 Jan 2021 | British | 65 years |
| Stephen John Ellis | Director | 10 Oct 2019 | 18 Jul 2022 | British | 67 years |
| Stephen Paul Bradley | Director | 20 Mar 2019 | 10 Oct 2019 | British | 61 years |
| Stephen Paul Bradley | Director | 10 Oct 2019 | 18 Jul 2022 | British | 61 years |