| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| B & D ENERGY LIMITED | 10088491 | 18/05/2023 | Amber |
| HERRIARD VILLAGE CHARITY | 03857596 | 13/02/2023 | Gold |
| WILLS ADVISORY LIMITED | 13982728 | 17/03/2022 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BACTON STORAGE COMPANY LIMITED | 06827589 | 24/03/2009 | 01/10/2013 | Dissolved |
| BAIRD UNDERGROUND GAS STORAGE LIMITED | 06481606 | 16/09/2009 | 01/10/2013 | Dissolved |
| BARROW GAS STORAGE LIMITED | 07293852 | 12/07/2010 | 18/12/2012 | Dissolved |
| CAYTHORPE GAS STORAGE LIMITED | 05283117 | 15/09/2008 | 01/10/2013 | Amber |
| CENTRICA BAIRD LIMITED | 06655659 | 16/09/2009 | 01/10/2013 | Dissolved |
| CENTRICA ENERGY STORAGE LIMITED | 03294124 | 31/07/2008 | 01/10/2013 | Bronze |
| CENTRICA OFFSHORE UK LIMITED | 04248952 | 31/07/2008 | 01/10/2013 | Bronze |
| CENTRICA ONSHORE PROCESSING UK LIMITED | 04037670 | 31/07/2008 | 18/12/2012 | Dissolved |
| CENTRICA STORAGE HOLDINGS LIMITED | 04573558 | 31/07/2008 | 01/10/2013 | Gold |
| CENTRICA TRUST (NO.1) LIMITED | 05461852 | 05/11/2013 | 11/06/2020 | Amber |
| COASTAL ENERGY LIMITED | 04421942 | 07/11/2006 | 28/07/2008 | Dissolved |
| COOTS LTD | 05949882 | 07/11/2006 | 28/07/2008 | Dissolved |
| EP LANGAGE LIMITED | 03462783 | 04/07/2007 | 28/04/2008 | Gold |
| GEMSERV LIMITED | 04419878 | 01/11/2014 | 01/11/2020 | Bronze |
| SPIRIT ENERGY LIMITED | 10854461 | 08/12/2017 | 04/05/2018 | Silver |