| Adrian Charles Morris | Director | 14 Nov 2002 | 3 Nov 2003 | British | 59 years |
| Alistair George Sinclair Geddes | Director | 21 Aug 2000 | 10 Jul 2002 | British | 64 years |
| Andrew Philip Poole | Secretary | 20 Jan 1999 | 18 Sept 2000 | British | - |
| Bruce Douglas Walker | Director | 3 Nov 2003 | 31 Jul 2008 | British | 73 years |
| Centrica Secretaries Limited | Corporate Secretary | 14 Nov 2002 | 1 Dec 2003 | United Kingdom | - |
| Christopher O'shea | Director | 6 Mar 2019 | 24 Jul 2020 | British | 53 years |
| Darren Oliver | Director | 18 Dec 2018 | 31 Jul 2020 | British | 55 years |
| David Naughton Keane | Director | 21 Mar 2002 | 18 Oct 2002 | British | 75 years |
| David R Roth | Director | 28 Nov 2001 | 8 Jul 2002 | American | 61 years |
| Gary Thomas Cardone | Director | 28 Nov 2001 | 21 Mar 2002 | American | 68 years |
| Graeme Stuart Collinson | Director | 21 Jul 2008 | 20 Jan 2014 | British | 70 years |
| Gregory Craig Mckenna | Director | 11 Feb 2015 | 5 Aug 2021 | British | 60 years |
| Helen Elizabeth Barker | Secretary | 16 Aug 2007 | 31 Mar 2008 | British | - |
| Howard Charles Higgins | Director | 1 Dec 1999 | 1 Feb 2001 | British | 73 years |
| Ian Grant Dawson | Director | 3 Nov 2003 | 6 Mar 2019 | British | 67 years |
| J Kevin Blodgett | Secretary | 26 Jun 2002 | 14 Nov 2002 | British | - |
| Jacob Shields Ulrich | Director | 14 Nov 2002 | 3 Nov 2003 | British | 73 years |
| James David Craig | Director | 1 Oct 2013 | 11 Feb 2015 | British | 58 years |
| James Gordon Ward | Director | 1 Dec 1999 | 9 Mar 2001 | British | 63 years |
| John Edward Henry Griffin | Director | 18 Dec 1996 | 1 Dec 1999 | British | 77 years |
| John Edward Henry Griffin | Secretary | 18 Dec 1996 | 28 Nov 2001 | British | - |
| John Matthew Boardman | Director | 21 Mar 2002 | 26 Sept 2002 | American | 55 years |
| John Richard Oliver | Director | 21 Mar 2002 | 14 Nov 2002 | British | 66 years |
| Johnathan Richard Ford | Director | 24 Jul 2020 | 18 Jan 2021 | British | 57 years |
| Julia Hui Ching Foo | Secretary | 31 Mar 2008 | 25 Sept 2009 | British | - |
| Julia Hui Ching Foo | Secretary | 4 Jan 2010 | 29 Feb 2012 | British | - |
| Katherine Beresford Ringrose | Director | 18 Jan 2021 | 8 Jun 2021 | British,south African | 52 years |
| Linda Anderson | Secretary | 18 Feb 2000 | 17 Nov 2000 | British | - |
| Lisa Quick Metts | Secretary | 28 Nov 2001 | 26 Jun 2002 | American | - |
| Lloyd Mark Pitchford | Director | 1 Dec 1999 | 23 Mar 2001 | British | 55 years |
| Luke Thomas | Director | 3 Nov 1998 | 14 Jan 1999 | British | 60 years |
| Martin Colum Francis Kinoulty | Director | 1 Dec 1999 | 28 Nov 2001 | British | 71 years |
| Matthew Giles Scrimshaw | Director | 10 Jul 2002 | 14 Nov 2002 | British | 61 years |
| Matthew Sebastian Lodge | Secretary | 25 Sept 2009 | 4 Jan 2010 | British | - |
| Michael Edwin Flinn | Director | 21 Mar 2002 | 14 Nov 2002 | American | 67 years |
| Michael John Garstang | Director | 3 Nov 2003 | 27 Jun 2008 | British | 78 years |
| Nigel John Wakefield | Director | 28 Nov 2001 | 14 Nov 2002 | British | 60 years |
| Nigel Richard Shaw | Director | 1 Feb 2001 | 27 Jul 2001 | British | 72 years |
| Philip William Davies | Secretary | 1 Dec 2003 | 16 Aug 2007 | British | - |
| Robert Dupre Doty Jr | Director | 28 Nov 2001 | 29 Jul 2002 | American | 69 years |
| Simon Marc Wills | Director | 31 Jul 2008 | 1 Oct 2013 | British | 59 years |
| Una Markham | Director | 18 Dec 1996 | 1 Dec 1999 | British | 67 years |
| Waterlow Nominees Limited | Corporate Nominee Director | 18 Dec 1996 | 18 Dec 1996 | - | - |
| Waterlow Secretaries Limited | Corporate Nominee Secretary | 18 Dec 1996 | 18 Dec 1996 | United Kingdom | - |
| William Michael Friedrich | Director | 1 Dec 1999 | 28 Nov 2001 | American | 77 years |
| William Paterson Russell | Director | 1 Dec 1999 | 31 Jul 2000 | British | 72 years |
| Yehuda Cohen | Director | 10 Jul 2002 | 14 Nov 2002 | British | 62 years |