| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ADVANCE ENVIRONMENTAL LIMITED | 03735393 | 16/11/2023 | Not Trading |
| AGRITECK SOLUTIONS LIMITED | 10345605 | 16/11/2023 | Dissolved |
| AQUATREAT CHEMICAL PRODUCTS LIMITED | 01861601 | 16/11/2023 | Dissolved |
| AQUATREAT GROUP LIMITED | 01149661 | 16/11/2023 | Dissolved |
| ATANA LTD | 04345865 | 16/11/2023 | One Red Flag |
| CEDAR WATER CONSULTANCY LIMITED | 11395396 | 04/06/2018 | Dissolved |
| CLEARWATER GROUP LIMITED | 02494701 | 16/11/2023 | Silver |
| CLEARWATER TECHNOLOGY LTD | 03659610 | 16/11/2023 | One Red Flag |
| G.P.C.S LIMITED | 06633594 | 16/11/2023 | Dissolved |
| GUARDIAN WATER TREATMENT LTD | 03913977 | 16/11/2023 | One Red Flag |
| HYDRO-X AIR LIMITED | 10312166 | 16/11/2023 | Bronze |
| HYDRO-X ENGINEERING LIMITED | 12869490 | 16/11/2023 | Bronze |
| HYDRO-X GROUP LIMITED | 09208285 | 16/11/2023 | Not Trading |
| HYDRO-X TRAINING LIMITED | 11552549 | 16/11/2023 | Bronze |
| HYDRO-X WATER TREATMENT LIMITED | 01818133 | 16/11/2023 | Bronze |
| KINGFISHER ENVIRONMENTAL SERVICES LIMITED | 03823185 | 16/11/2023 | Silver |
| N-OV8 GROUP LIMITED | 06389937 | 16/11/2023 | One Red Flag |
| PCS ASBESTOS CONSULTANTS LIMITED | 06999763 | 16/11/2023 | Bronze |
| PHASE TECHNOLOGY (HOLDINGS) LIMITED | 04667814 | 16/11/2023 | Bronze |
| PHASE TECHNOLOGY 2GEN HOLDINGS LIMITED | 10327059 | 16/11/2023 | One Red Flag |
| PHASE TECHNOLOGY LIMITED | 02846944 | 16/11/2023 | Amber |
| SANTIA ACCESS SOLUTIONS LIMITED | 11270573 | 16/11/2023 | One Red Flag |
| SANTIA ASBESTOS MANAGEMENT LIMITED | 07511557 | 16/11/2023 | Strike Off |
| SANTIA CONSTRUCTION MANAGEMENT LIMITED | 05289555 | 16/11/2023 | One Red Flag |
| SANTIA HOLDINGS LIMITED | 10509119 | 16/11/2023 | Not Trading |
| SANTIA LIMITED | 11091094 | 16/11/2023 | One Red Flag |
| STERLING HYDROTECH HOLDINGS LIMITED | 12123123 | 16/11/2023 | Not Trading |
| STERLING HYDROTECH LIMITED | 02275897 | 16/11/2023 | Gold |
| TERSUS CONSULTANCY LIMITED | 01912115 | 16/11/2023 | One Red Flag |
| TUESDAY CLUB INVESTMENTS LIMITED | 11418050 | 15/06/2018 | Dissolved |
| WCS ENVIRONMENTAL ENGINEERING LTD | 02583411 | 16/11/2023 | One Red Flag |
| WCS ENVIRONMENTAL LIMITED | 02184649 | 16/11/2023 | One Red Flag |
| WCS ENVIRONMENTAL SOUTH EAST LTD | 03157322 | 16/11/2023 | Gold |
| WCS SERVICES INVICTA LIMITED | 02735065 | 16/11/2023 | Silver |
| WCS SERVICES LIMITED | 05300448 | 16/11/2023 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CEDAR WATER POOL AND SNOOKER LIMITED | 11474568 | 01/04/2021 | 29/06/2023 | Bronze |
| TOLL DRAGON LIMITED | 14806629 | 17/04/2023 | 26/09/2024 | Bronze |