| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| METERPLUS LIMITED | 03020536 | 29/06/2012 | Dissolved |
| REBYL LIMITED | 04043701 | 31/12/2012 | Dissolved |
| SCARCROFT INVESTMENTS LIMITED | 02798178 | 29/06/2012 | Dissolved |
| SUPERIOR PLUMBING INSTALLATIONS GROUP LIMITED | 05982888 | 30/01/2009 | Dissolved |
| SUPERIOR PLUMBING INSTALLATIONS HOLDINGS LIMITED | 05982875 | 30/01/2009 | Dissolved |
| YE GAS LIMITED | 02571590 | 29/06/2012 | Dissolved |
| YORKSHIRE ENERGY LIMITED | 02571588 | 29/06/2012 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| E.ON NEXT ENERGY LIMITED | 03782443 | 07/07/2009 | 29/06/2012 | Silver |
| ELECTRICITY PLUS SUPPLY LIMITED | 05199936 | 07/07/2009 | 20/12/2013 | Gold |
| GAS PLUS SUPPLY LIMITED | 05199935 | 07/07/2009 | 20/12/2013 | Silver |
| NPOWER BUSINESS AND SOCIAL HOUSING LIMITED | 00893718 | 01/02/2020 | 02/01/2022 | Dissolved |
| NPOWER COMMERCIAL GAS LIMITED | 03768856 | 09/02/2009 | 29/06/2012 | Silver |
| NPOWER FINANCIAL SERVICES LIMITED | 03925068 | 07/07/2009 | 02/01/2022 | Dissolved |
| NPOWER GAS LIMITED | 02999919 | 07/07/2009 | 02/01/2022 | Not Trading |
| NPOWER GROUP LIMITED | 08241182 | 03/12/2019 | 02/01/2022 | Bronze |
| NPOWER LIMITED | 03653277 | 01/10/2008 | 02/01/2022 | Silver |
| NPOWER NORTHERN LIMITED | 03432100 | 09/02/2009 | 02/01/2022 | Not Trading |
| NPOWER NORTHERN SUPPLY LIMITED | 02845740 | 29/06/2012 | 02/01/2022 | Not Trading |
| NPOWER YORKSHIRE LIMITED | 03937808 | 09/02/2009 | 02/01/2022 | Not Trading |
| NPOWER YORKSHIRE SUPPLY LIMITED | 04212116 | 29/06/2012 | 02/01/2022 | Not Trading |
| OCTOPUS ELECTRICAL LIMITED | 00830299 | 30/01/2009 | 31/05/2015 | Dissolved |
| PLUS SHIPPING SERVICES LIMITED | 04508350 | 07/07/2009 | 01/03/2021 | Amber |
| PS ENERGY UK LIMITED | 09850654 | 30/10/2015 | 02/01/2022 | Not Trading |
| RWE GENERATION UK PLC | 03892782 | 23/03/2009 | 31/12/2012 | Gold |