| Alan Edward Moore | Director | 1 Nov 1994 | 16 Apr 2003 | British | 89 years |
| Allen Eric Appen | Director | 29 Apr 2016 | 5 Jun 2020 | American | 64 years |
| Anna Katharine Goldsmith | Director | 24 Aug 2007 | 11 Aug 2016 | British | 58 years |
| Christopher Canham | Director | 5 Jun 2020 | 5 Jul 2021 | British | 57 years |
| Colin Neville Joseph Wilks | Director | 27 Mar 1992 | 31 Dec 1994 | British | 89 years |
| Deborah Ann Saunders | Secretary | 27 Mar 1992 | 6 Jan 2010 | Other | - |
| Helen Alison Weir | Director | 4 Feb 2005 | 10 Oct 2007 | British | 63 years |
| John Hardt | Director | 24 Jan 2006 | 20 Aug 2007 | American | 71 years |
| John Robert Turner | Director | 26 Apr 2023 | 30 Jan 2024 | British | 61 years |
| John Thomas Davies | Director | 28 Apr 1994 | 31 Jul 1998 | British | 92 years |
| Jonathan Scott Foster | Director | 9 Oct 2007 | 5 Mar 2015 | British | 67 years |
| Kerry James Hawkins | Director | 27 Mar 1992 | 28 Apr 1994 | British | 79 years |
| Lloyds Secretaries Limited | Corporate Secretary | 16 Jan 2012 | 18 Nov 2015 | United Kingdom | - |
| Michael Edward Fairey | Director | 23 Apr 1998 | 10 Oct 2007 | British | 77 years |
| Michael Harry Rex Thompson | Director | 28 Apr 1994 | 30 Mar 1995 | British | 94 years |
| Michael Kent Atkinson | Director | 1 Jan 1995 | 31 May 2002 | Anglo Brazilian | 80 years |
| Michelle Antoinette Angela Johnson | Secretary | 18 Nov 2015 | 30 Nov 2017 | - | - |
| Paul John Tabberner | Director | 5 Jul 2021 | 26 Apr 2023 | British | 51 years |
| Peter George Edwin Ayliffe | Director | 19 Jun 2003 | 31 Jan 2005 | British | 72 years |
| Philip Roy Hampton | Director | 20 Jun 2002 | 12 Jan 2004 | British | 72 years |
| Prasad Nagnath Pitale | Director | 29 Sept 2009 | 28 Jun 2019 | British | 54 years |
| Raymond Alan Wakefield | Director | 27 Mar 1992 | 28 Apr 1994 | British | 86 years |
| Richard Geoffrey Meade Conway | Director | 9 Oct 2007 | 8 Feb 2016 | British | 65 years |
| Richard Warren | Director | 18 Aug 2015 | 30 Nov 2015 | British | 61 years |