| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CARRIER SOLUTIONS UK LTD. | 03723803 | 31/10/2017 | Amber |
| RIELLO LIMITED | 01260734 | 18/08/2023 | One Red Flag |
| SUPERB DEVELOPMENTS LIMITED | 13602358 | 03/09/2021 | Bronze |
| VIESSMANN LIMITED | 02305071 | 01/05/2024 | Silver |
| VOKERA LIMITED | 01047779 | 18/08/2023 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CIAT OZONAIR LTD | 01358498 | 23/09/2016 | 14/10/2021 | Dissolved |