| Akira Asakura | Director | 22 Sept 1994 | 25 May 2001 | Japanese | 92 years |
| Alan Bennett | Director | 6 Nov 2002 | 31 Oct 2007 | British | 74 years |
| Amanda Jane King | Director | 18 Oct 2005 | 1 Aug 2006 | British | 57 years |
| Andrew Arthur Clements | Director | 5 Apr 1997 | 31 Dec 2000 | British | 83 years |
| Benedict William John Thorpe Wright | Director | 14 Aug 2006 | 31 Oct 2007 | British | 54 years |
| Centrica Secretaries Limited | Corporate Secretary | 4 Oct 2005 | 31 Aug 2017 | United Kingdom | - |
| Clifford Chance Secretaries Limited | Corporate Secretary | 2 Mar 2000 | 25 May 2001 | United Kingdom | - |
| Clifford Chance Secretaries Limited | Corporate Nominee Secretary | 2 Jan 1993 | 29 Oct 1996 | United Kingdom | - |
| Didier Yvan Marie Jaques Chanoine | Director | 22 Mar 2002 | 20 Sept 2005 | French | 78 years |
| Eric Drewery | Director | 22 Sept 1994 | 8 Jan 1998 | British | 87 years |
| Esko Ilmari Salosaari | Director | 2 Jan 1993 | 22 Sept 1994 | Finnish | 76 years |
| Esko Salosaari | Director | 11 Jan 2001 | 25 May 2001 | Finnish | 76 years |
| Francois Debien | Director | 5 Apr 1997 | 19 Jul 2000 | French | 76 years |
| Graeme Stuart Collinson | Director | 13 Feb 2009 | 1 Jan 2014 | British | 70 years |
| Graham Steer | Director | 29 Jul 1997 | 25 May 2001 | British | 75 years |
| Ian Wood | Director | 31 Dec 2001 | 29 Jan 2004 | British | 68 years |
| Jacob Shields Ulrich | Director | 25 May 2001 | 6 Mar 2003 | British | 73 years |
| James Peter Chiodini | Secretary | 4 Jun 2020 | 23 Feb 2023 | - | - |
| James Spence | Director | 31 Oct 2007 | 30 Jun 2010 | British New Zealand | 58 years |
| Jean Pierre Philippe Mateille | Director | 14 Sept 2001 | 20 Sept 2005 | French | 69 years |
| Jean Raymond Joseph Fournier | Director | 25 May 2001 | 14 Sept 2001 | French | 75 years |
| Jean-michel Merzeau | Director | 29 Jul 1997 | 6 Jan 2001 | French | 74 years |
| Jerome Michael Groves | Director | 8 Nov 1994 | 25 May 2001 | British | 86 years |
| Jillian Elizabeth Gallant | Secretary | 25 May 2001 | 4 Oct 2005 | British | - |
| John Albert Gordon Bonner | Director | 7 May 1998 | 30 Jun 2000 | British | 84 years |
| John Anthony Deane | Director | 12 Jul 1995 | 30 Mar 2000 | British | 80 years |
| John Bryant | Director | 22 Sept 1994 | 21 Jul 1999 | British | 80 years |
| John Edward Knight | Director | 1 Jan 2014 | 24 Oct 2014 | British | 60 years |
| John Frederick Watson Watts | Director | 31 Oct 2007 | 22 Apr 2014 | British | 72 years |
| John Marcus Nettelton | Secretary | 31 Aug 2017 | 24 May 2020 | - | - |
| John Nicholas Shears | Director | 25 May 2001 | 31 Dec 2001 | British | 68 years |
| Jonathan Cox | Director | 26 Aug 1998 | 20 Apr 2001 | British | 59 years |
| Jonathan Paul Bradley | Director | 18 Oct 2005 | 11 Mar 2008 | British | 70 years |
| Junichi Tsuruta | Director | 29 Jul 1997 | 27 Jan 2000 | Japanese | 68 years |
| Kari Jalmari Huopalahti | Director | 2 Jan 1993 | 26 Aug 1998 | Finnish | 79 years |
| Luc Yves Jaubert | Director | 20 Sept 2002 | 20 Sept 2005 | French | 63 years |
| Malcolm Preece | Director | 8 Jan 1998 | 25 May 2001 | American | 83 years |
| Mark Ramsey Futyan | Director | 22 Apr 2014 | 31 Aug 2017 | British | 48 years |
| Mark Taylor | Director | 4 Oct 2016 | 31 Aug 2017 | British | 56 years |
| Michael James Langley | Director | 1 Jan 2001 | 25 May 2001 | British | 81 years |
| Michael John Garstang | Director | 22 Mar 2002 | 30 Jun 2008 | British | 78 years |
| Michael Roy Miller | Director | 3 Jul 1995 | 10 Jun 1996 | British | 73 years |
| Michael Roy Miller | Director | 1 Jan 1998 | 7 May 1998 | British | 73 years |
| Michael Roy Miller | Director | 21 Jul 1999 | 25 May 2001 | British | 73 years |
| Minoru Saito | Director | 27 Jan 2000 | 18 Apr 2000 | Japanese | 71 years |
| Nicholas James Dunn | Director | 28 Apr 2005 | 18 Oct 2005 | British | 60 years |
| Peter Frederick Leopold Koch De Gooreynd | Director | 2 Feb 2015 | 5 Sept 2016 | British | 68 years |
| Philippe Jacques Sauquet | Director | 19 Jul 2000 | 20 Sept 2005 | French | 69 years |
| Richard Matthew Mccord | Director | 15 Nov 2013 | 31 Aug 2017 | British | 53 years |
| Sarwjit Sambhi | Director | 11 Mar 2008 | 12 Aug 2013 | British | 57 years |
| Sarwjit Sambhi | Director | 29 Jan 2004 | 28 Apr 2005 | British | 57 years |
| Shohei Yasuda | Director | 19 Apr 2000 | 25 May 2001 | Japanese | 57 years |
| Simon Jonathan Goodwin | Director | 6 Mar 2003 | 31 Oct 2007 | British | 64 years |
| Stephen John Mancey | Director | 7 Sept 2001 | 6 Nov 2002 | British | 71 years |
| Stephen John Mancey | Director | 6 Mar 2003 | 29 Jan 2004 | British | 71 years |
| Stuart Robert Jackson | Secretary | 29 Oct 1996 | 2 Mar 2000 | British | - |
| Thomas Edward Hinton | Director | 30 Jun 2010 | 15 Nov 2013 | British | 47 years |
| Veikko Johannes Anttila | Director | 2 Jan 1993 | 15 Nov 1993 | Finnish | 84 years |
| William Andrew John Poulton | Director | 10 Jun 1996 | 8 Jan 1998 | British | 69 years |