| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ECO ENVIRONMENTAL ENGINEERING LTD | 09075553 | 06/06/2014 | Amber |
| HEAT RADIATION LIMITED | 00835097 | 06/10/2017 | One Red Flag |
| HEATING AND COOLING SERVICES (OXFORD) LIMITED | 09769499 | 09/06/2021 | One Red Flag |
| KPS SOUTHERN LIMITED | 03040955 | 31/10/2017 | Gold |
| MURCH & BAKER HEATING LIMITED | 05005561 | 03/02/2020 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| OUTSOURCED ENERGY LIMITED | 12631552 | 09/06/2020 | 24/10/2023 | Amber |