| Alan Bennett | Director | 28 Apr 2005 | 31 Oct 2007 | British | 74 years |
| Alan Kenneth Barlow | Director | 9 Feb 2017 | 5 Jul 2021 | Irish | 62 years |
| Alan Stewart Thompson | Director | 4 Jul 2007 | 28 Sept 2012 | British | 65 years |
| Andrew William Hodges | Director | 30 Jun 2016 | 9 Feb 2017 | British | 59 years |
| Centrica Directors Limited | Corporate Director | 31 Dec 2015 | 9 Feb 2017 | United Kingdom | - |
| Christian Andrew Stella | Director | 31 Jan 2024 | 10 Oct 2025 | Italian,british | 45 years |
| Christopher Richard Pike | Director | 9 Feb 2017 | 1 Sept 2019 | British | 46 years |
| David Anthony James Crowther | Director | 16 Dec 2010 | 28 Nov 2014 | British | 64 years |
| David Roger Pethybridge | Director | 21 Jan 2021 | 30 Sept 2025 | British | 41 years |
| Gearoid Martin Lane | Director | 27 Apr 2004 | 4 Jul 2007 | Irish | 62 years |
| Graeme Stuart Collinson | Director | 13 Feb 2009 | 1 Jan 2014 | British | 70 years |
| Jacob Shields Ulrich | Director | 23 Oct 2003 | 27 Apr 2004 | British | 73 years |
| James Spence | Director | 31 Oct 2007 | 30 Jun 2010 | British New Zealand | 58 years |
| John Edward Knight | Director | 1 Jan 2014 | 24 Oct 2014 | British | 60 years |
| Justin Jacober | Director | 1 May 2022 | 31 Jan 2024 | Canadian | 52 years |
| Michael John Garstang | Director | 13 Aug 2004 | 30 Jun 2008 | British | 78 years |
| Nicola Carroll | Director | 31 Dec 2015 | 30 Jun 2016 | British | 67 years |
| Paul Stephen Lawton | Director | 5 Jul 2021 | 1 May 2022 | British | 60 years |
| Peter Frederick Leopold Koch De Gooreynd | Director | 2 Feb 2015 | 31 Dec 2015 | British | 68 years |
| Peter Michael Zimmerman | Director | 1 Sept 2019 | 21 Jan 2021 | British | 55 years |
| Richard Matthew Mccord | Director | 12 Aug 2013 | 31 Dec 2015 | British | 53 years |
| Rm Nominees Limited | Corporate Director | 23 Oct 2003 | 23 Oct 2003 | - | - |
| Rm Registrars Limited | Corporate Secretary | 23 Oct 2003 | 23 Oct 2003 | United Kingdom | - |
| Sarwjit Sambhi | Director | 23 Oct 2003 | 28 Apr 2005 | British | 57 years |
| Simon Patrick Redfern | Director | 26 Nov 2012 | 31 Dec 2015 | British | 61 years |
| Simon Richard Clark | Director | 27 Apr 2004 | 4 Jul 2007 | British | 62 years |
| Susan Elizabeth Wheeler | Director | 4 Jul 2007 | 16 Dec 2010 | British | 62 years |
| Thomas Edward Hinton | Director | 30 Jun 2010 | 12 Aug 2013 | British | 47 years |