| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ARA ARCHITECTURE LIMITED | 07729784 | 02/05/2023 | Bronze |
| ATV CONTRACT SERVICES LIMITED | 04515676 | 17/12/2021 | One Red Flag |
| BTS GROUP LIMITED | 04299486 | 24/08/2020 | One Red Flag |
| CBEC ECO ENGINEERING UK LIMITED | SC385000 | 01/04/2021 | Amber |
| CX ENERGY LTD | 11626344 | 31/03/2023 | Amber |
| CX GROUP HOLDINGS LIMITED | 14655804 | 31/03/2023 | Silver |
| CX UTILITIES LTD | 09620774 | 31/03/2023 | Bronze |
| HAWKINS ELECTRICAL HOLDINGS LIMITED | 10697268 | 09/03/2023 | Amber |
| HAWKINS ELECTRICAL LIMITED | 03505136 | 09/03/2023 | Bronze |
| RSK HI-LINE LIMITED | 13765064 | 02/03/2022 | One Red Flag |
| RSK UTILITY CONSULTING LIMITED | 11556909 | 31/03/2023 | Silver |
| SPENCER QUANTUM LIMITED | 02928764 | 27/03/2023 | Silver |
| TBF SCAFFOLDING LTD | 01841098 | 24/08/2020 | Bronze |
| TBF TRAFFIC LTD | 04689212 | 24/08/2020 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BTS UTILITY ARB LIMITED | 05597917 | 24/08/2020 | 21/05/2021 | Dissolved |
| SPENCER ECA GROUP LIMITED | 12025776 | 27/03/2023 | 01/03/2024 | Dissolved |
| TBF CONTRACTING LIMITED | 09762168 | 24/08/2020 | 01/03/2024 | Dissolved |