| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| NIJHUIS SAUR INDUSTRIES UK & IRELAND LIMITED | 14261668 | 02/05/2024 | Bronze |
| NORTECH CONSULTANCY SOLUTIONS LIMITED | 09182292 | 17/09/2021 | Strike Off |
| NORTECH ENGINEERING SOLUTIONS LIMITED | 08160361 | 17/09/2021 | Strike Off |
| NORTECH SOLUTIONS GROUP LIMITED | 08586156 | 17/09/2021 | Strike Off |
| NSI COMMERCIAL BUILDINGS SOLUTIONS LTD | 03293847 | 28/11/2019 | Bronze |
| NSI ENGINEERING SOLUTIONS LTD | 07472136 | 17/09/2021 | Bronze |
| NSI ENGINEERING SOLUTIONS STAFFING LTD | 07882795 | 17/09/2021 | Bronze |
| NSI INDUSTRIAL O&M SOLUTIONS LTD | 02528695 | 15/02/2023 | One Red Flag |
| NSI WATER AND WASTEWATER SOLUTIONS LTD | 04785670 | 01/11/2019 | One Red Flag |
| RIVENTA LTD | 03945306 | 22/11/2021 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| EVOQUA WATER TECHNOLOGIES LIMITED | 08608208 | 12/07/2013 | 17/12/2018 | One Red Flag |
| WATER TECHNOLOGIES U.K. LTD | 08804654 | 15/01/2014 | 16/12/2018 | One Red Flag |