| Aidan Philip Mcconkey | Director | 9 Dec 2005 | 1 May 2007 | British | 57 years |
| Alan Michael Jones | Director | 24 Feb 1992 | 15 Apr 1992 | British | 67 years |
| Andrew David Woosey | Director | 30 Sept 1996 | 12 Jan 1998 | British | 59 years |
| Anthony Nicholas Whitney | Director | 11 Jan 1993 | 21 Dec 1995 | British | 75 years |
| Arie Christian Tupker | Director | 31 May 1992 | 11 Jan 1993 | Canadian | 81 years |
| Caroline Mary Anne Rainbird | Director | 9 May 2005 | 31 Oct 2008 | British | 59 years |
| Catriona White | Director | 26 Apr 2019 | 30 Sept 2020 | British | 61 years |
| Ciro Tomagnini | Director | 1 Sept 1997 | 30 Jun 1999 | Italian | 62 years |
| Claudio Corradini | Director | 9 May 2005 | 8 Mar 2007 | Italian | 57 years |
| Clifford Chance Secretaries Limited | Corporate Nominee Secretary | 24 Feb 1992 | 15 Apr 1992 | United Kingdom | - |
| David John Gregory | Director | 12 Jun 2006 | 31 Dec 2006 | British | 70 years |
| David Joseph Plucinsky | Director | 15 Apr 1992 | 31 May 1992 | American | 76 years |
| David Joseph Plucinsky | Director | 1 Jun 1992 | 7 Feb 1994 | American | 76 years |
| Frederick William Hulton | Director | 15 Apr 1992 | 31 May 1992 | British | 87 years |
| Gary James Paterson | Director | 9 Jan 1998 | 30 Jul 1999 | British | 62 years |
| Giles Edwin Thomas Fitzpatrick | Director | 30 Sept 1996 | 30 Nov 2004 | British | 64 years |
| Ingo Van Waesberghe | Director | 7 Jan 2000 | 31 Dec 2000 | Dutch | 79 years |
| Jane Anne Curtis | Director | 30 Jun 1998 | 14 May 1999 | British | 60 years |
| Jenny Stevinson | Secretary | 15 Apr 1992 | 21 Mar 2002 | British | - |
| Joannes Jacobus Andre Marie Stuyt | Director | 31 May 1992 | 27 Aug 1996 | British | 76 years |
| Katherine Liza Antoinetta Fernandes | Secretary | 13 May 1992 | 31 Aug 2014 | British | - |
| Keith Anthony Bullen | Director | 1 Jan 2001 | 13 Jun 2006 | British | 72 years |
| Keith Edginton | Director | 4 Dec 1998 | 31 Aug 2002 | British | 69 years |
| Martin Edgar Richards | Nominee Director | 24 Feb 1992 | 15 Apr 1992 | British | 82 years |
| Martin Ronald Smith | Director | 7 Jul 1999 | 30 Jul 1999 | British | 69 years |
| Martin Ronald Smith | Director | 1 Aug 1999 | 10 Jan 2006 | British | 69 years |
| Michael Cole | Director | 3 Dec 2018 | 26 Apr 2019 | British | 51 years |
| Michael Peter Geslak | Director | 26 Mar 2007 | 11 Dec 2018 | American | 61 years |
| Nicholas William Ayrton Bannister | Director | 30 Sept 1996 | 31 Oct 2001 | British | 66 years |
| Oliver Charles Davidson | Director | 26 Mar 2007 | 15 Oct 2008 | British | 54 years |
| Peter Richard Meinertzhagen | Director | 23 Mar 1995 | 2 Apr 2004 | British | 79 years |
| Rbs Secretarial Services Limited | Corporate Secretary | 31 Aug 2014 | 3 Dec 2018 | United Kingdom | - |
| Richard John Lawrence | Director | 15 Oct 2008 | 3 Dec 2018 | British | 53 years |
| Robert Andrew Horrocks | Director | 30 Jan 2015 | 9 Jan 2019 | British | 49 years |
| Robert Edward Lindo | Director | 26 Mar 2007 | 29 Apr 2008 | British | 71 years |
| Simon John Clegg | Director | 24 Oct 1994 | 31 Dec 1996 | British | 68 years |
| Simon John Mould | Director | 26 Mar 2007 | 30 Jan 2015 | British | 65 years |
| Stuart John William Bailey | Director | 15 Apr 1992 | 31 May 1992 | British | 75 years |
| Stuart John William Bailey | Director | 1 Jun 1992 | 30 Sept 1996 | British | 75 years |