| Alistair Mark Todd | Director | 1 Apr 2014 | 28 Mar 2018 | British | 51 years |
| Brian Jackson | Director | 1 Feb 2014 | 21 Mar 2016 | British | 57 years |
| Centrica Directors Limited | Corporate Director | 26 Mar 2012 | 18 Sept 2012 | United Kingdom | - |
| Christopher John Stern | Director | 13 Jul 2015 | 30 Sept 2018 | English | 69 years |
| Claire Miles | Director | 1 Feb 2014 | 30 Nov 2014 | British | 54 years |
| David Keith Young | Director | 1 Feb 2015 | 10 Oct 2016 | British | 63 years |
| Gab Saturnio Barbaro | Director | 1 Feb 2014 | 10 Oct 2016 | Italian | 55 years |
| Ivan Edward Ronald | Director | 28 Mar 2018 | 5 Jul 2019 | British | 54 years |
| Jana Siber | Director | 1 Dec 2022 | 28 Feb 2025 | British | 54 years |
| Jeffrey Bell | Director | 30 Jul 2010 | 1 Feb 2014 | Canadian | 59 years |
| Marc Anthony Angell | Director | 1 Feb 2014 | 14 Apr 2014 | British | 46 years |
| Matthew James Bateman | Director | 17 Sept 2021 | 18 Feb 2022 | British | 58 years |
| Moira Lynne Turner | Director | 20 Jan 2009 | 30 Jul 2010 | British | 64 years |
| Paul Ian Hedley | Director | 20 Jan 2009 | 22 Jul 2009 | British | 57 years |
| Peter Michael Martin-simon | Director | 25 Jul 2017 | 17 Sept 2021 | British | 51 years |
| Robert David Alan Morton | Director | 18 Sept 2012 | 14 May 2015 | British | 60 years |
| Sarah Elizabeth Mussenden | Director | 1 Jul 2019 | 30 Jun 2021 | British | 61 years |
| Steven John Buck | Director | 18 Sept 2012 | 1 Apr 2014 | British | 57 years |
| Stuart David Phillips | Director | 30 Jun 2021 | 1 Dec 2022 | British | 49 years |
| Tony Alan Kendall | Director | 22 Jul 2009 | 26 Mar 2012 | British | 70 years |
| William John Orr | Director | 14 Apr 2014 | 10 Jul 2017 | British | 56 years |
