| Alan Bennett | Director | 28 Apr 2005 | 31 Oct 2007 | British | 74 years |
| Alan Stewart Thompson | Director | 4 Jul 2007 | 28 Sept 2012 | British | 65 years |
| Alexis Eduardo Ulens | Director | 7 Mar 2016 | 26 Oct 2022 | British,belgian,argentine | 59 years |
| Centrica Secretaries Limited | Corporate Secretary | 27 Apr 2004 | 7 Mar 2016 | United Kingdom | - |
| Charles Desmond Kyle Reid | Director | 7 Mar 2016 | 12 Apr 2018 | British | 45 years |
| Christopher Laskey Fidler | Secretary | 6 Dec 2002 | 23 Dec 2003 | British | - |
| Colin Fellowes | Secretary | 7 Feb 2001 | 29 May 2003 | British | - |
| Colin Fleming | Director | 11 Mar 2002 | 6 Dec 2002 | British | 67 years |
| David John Hodkinson | Director | 6 Dec 2002 | 23 Dec 2003 | British | 63 years |
| Gearoid Martin Lane | Director | 23 Dec 2003 | 4 Jul 2007 | Irish | 62 years |
| Gerald Stockwood | Director | 11 Mar 2002 | 6 Dec 2002 | British | 80 years |
| Graeme Stuart Collinson | Director | 13 Feb 2009 | 10 Dec 2009 | British | 70 years |
| Grant Richmond Ling | Director | 7 Feb 2001 | 15 Feb 2002 | British | 70 years |
| Ian John Wolstenholme | Director | 6 Dec 2002 | 23 Dec 2003 | British | 60 years |
| James Henry John King | Director | 6 Dec 2002 | 23 Dec 2003 | British | 60 years |
| James Spence | Director | 31 Oct 2007 | 23 Jul 2010 | British New Zealand | 58 years |
| Janet Patricia Chamberlain | Director | 6 Dec 2002 | 23 Dec 2003 | British | 76 years |
| Jean-daniel Walter Borgeaud | Director | 11 Dec 2009 | 7 Mar 2016 | Swiss And American | 68 years |
| Karen Chandler | Secretary | 7 Mar 2016 | 14 Jun 2017 | - | - |
| Karl Ben Smith | Director | 7 Mar 2016 | 26 Oct 2022 | Australian | 49 years |
| Karl Byrne | Director | 27 Oct 2021 | 26 Sept 2024 | Irish | 41 years |
| Keith Mangan | Director | 12 Apr 2018 | 27 Oct 2021 | Irish | 53 years |
| Kurt Adolph Talbot | Director | 23 Jul 2010 | 22 May 2013 | American | 64 years |
| Michael John Garstang | Director | 13 Aug 2004 | 30 Jun 2008 | British | 78 years |
| Neil Alexander Bruce | Director | 7 Feb 2001 | 6 Dec 2002 | British | 66 years |
| Peter George Raftery | Director | 7 Mar 2016 | 26 Sept 2024 | British | 58 years |
| Richard John Corke | Director | 7 Feb 2001 | 11 Mar 2002 | British | 77 years |
| Richard Matthew Mccord | Director | 12 Aug 2013 | 7 Mar 2016 | British | 53 years |
| Robert Blair Thomas | Director | 11 Dec 2009 | 23 Jul 2010 | American | 64 years |
| Sarwjit Sambhi | Director | 23 Dec 2003 | 28 Apr 2005 | British | 57 years |
| Sarwjit Sambhi | Secretary | 23 Dec 2003 | 27 Apr 2004 | British | - |
| Simon Patrick Redfern | Director | 26 Nov 2012 | 7 Mar 2016 | British | 61 years |
| Simon Richard Clark | Director | 27 Apr 2004 | 4 Jul 2007 | British | 62 years |
| Simon Robert Hayden | Director | 22 May 2013 | 7 Mar 2016 | British | 49 years |
| Susan Elizabeth Wheeler | Director | 4 Jul 2007 | 10 Dec 2009 | British | 62 years |
| Susan Taberner | Secretary | 6 Dec 2002 | 20 Jun 2003 | British | - |
| Thomas Edward Hinton | Director | 23 Jul 2010 | 12 Aug 2013 | British | 47 years |