| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| GREYSTONE CAPITAL LIMITED | 15967616 | 19/09/2024 | Amber |
| HARMONY BF2 LIMITED | 12009304 | 21/05/2019 | Gold |
| HARMONY BW LIMITED | 15609692 | 02/04/2024 | Amber |
| HARMONY CBR LIMITED | 15605529 | 30/03/2024 | Amber |
| HARMONY CS LIMITED | 10913728 | 17/10/2023 | Bronze |
| HARMONY CTF 2 LIMITED | 11558612 | 17/10/2023 | One Red Flag |
| HARMONY CTF LIMITED | 10683553 | 17/10/2023 | One Red Flag |
| HARMONY ENERGY LIMITED | 10141078 | 22/04/2016 | Silver |
| HARMONY FL LIMITED | 15741011 | 25/05/2024 | Amber |
| HARMONY GC LIMITED | 15603379 | 29/03/2024 | Amber |
| HARMONY HB LIMITED | 10683540 | 17/10/2023 | Bronze |
| HARMONY HM LIMITED | 15833780 | 11/07/2024 | Amber |
| HARMONY KT LIMITED | 15819964 | 04/07/2024 | Amber |
| HARMONY MB SOLAR LIMITED | 15664164 | 20/04/2024 | Amber |
| HARMONY MF LIMITED | 13596721 | 20/06/2024 | Silver |
| HARMONY MS LIMITED | 15754938 | 01/06/2024 | Amber |
| HARMONY SH LIMITED | 15611259 | 03/04/2024 | Amber |
| HARMONY SK LIMITED | 13466779 | 21/06/2021 | Silver |
| HARMONY SPV1 LIMITED | 15814621 | 02/07/2024 | Amber |
| HARMONY SPV2 LIMITED | 15815288 | 02/07/2024 | Amber |
| HARMONY SPV3 LIMITED | 15819835 | 04/07/2024 | Amber |
| QUADOAK LIMITED | 11118346 | 19/12/2017 | Dissolved |
| SMART ECO YORKSHIRE LIMITED | 12180398 | 29/08/2019 | Bronze |
| TOUCHSTONE INFRASTRUCTURE AND TECHNICAL SERVICES LIMITED | 11078497 | 23/11/2017 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BROMPTON SOLAR LIMITED | 13488230 | 01/07/2021 | 08/10/2021 | Bronze |
| HARMONY OB LIMITED | 14231848 | 03/03/2023 | 04/03/2023 | Gold |
| HEIT RH LIMITED | 13244588 | 04/03/2021 | 09/11/2021 | Bronze |
| SKEEBY SOLAR LIMITED | 13488103 | 01/07/2021 | 08/10/2021 | Bronze |