| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| KEMBLE WATER INVESTMENTS LIMITED | 05859428 | 01/05/2017 | Dissolved |
| KEMBLE WATER LIBERTY LIMITED | 05819270 | 01/05/2017 | Dissolved |
| KEMBLE WATER LIMITED | 05859424 | 01/05/2017 | Dissolved |
| KEMBLE WATER STRUCTURE LIMITED | 05819276 | 01/05/2017 | Dissolved |
| THAMES WATER HOLDINGS LIMITED | 05685587 | 01/05/2017 | Dissolved |
| THAMES WATER NOMINEES LIMITED | 02614522 | 01/04/2017 | Dissolved |
| THAMES WATER OVERSEAS CONSULTANCY LIMITED | 00757959 | 13/04/2018 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| INNOVA PARK MANAGEMENT COMPANY LIMITED | 03080140 | 15/11/2017 | 26/07/2019 | One Red Flag |
| KENNET PROPERTIES LIMITED | 02498997 | 15/11/2017 | 26/07/2019 | One Red Flag |
| PWT PROJECTS LIMITED | 00090710 | 29/09/2017 | 26/07/2019 | Not Trading |
| SHAPESHARE LIMITED | 04389988 | 15/11/2017 | 26/07/2019 | Dissolved |
| THAMES WATER (KEMBLE) FINANCE PLC | 07516930 | 13/10/2017 | 26/07/2019 | Bronze |
| THAMES WATER COMMERCIAL SERVICES LIMITED | 08021020 | 29/01/2021 | 30/07/2021 | One Red Flag |
| THAMES WATER COMMERCIAL VENTURES FINANCE LIMITED | 08766303 | 13/04/2018 | 26/07/2019 | One Red Flag |
| THAMES WATER COMMERCIAL VENTURES HOLDINGS LIMITED | 08765700 | 13/04/2018 | 26/07/2019 | Amber |
| THAMES WATER INTERNATIONAL SERVICES HOLDINGS LIMITED | 01920229 | 13/04/2018 | 26/07/2019 | Dissolved |
| THAMES WATER INTERNATIONAL SERVICES LIMITED | 01939768 | 13/04/2018 | 26/07/2019 | Dissolved |
| THAMES WATER INVESTMENTS LIMITED | 02567126 | 01/04/2018 | 26/07/2019 | Silver |
| THAMES WATER OVERSEAS LIMITED | 02909020 | 29/09/2017 | 26/07/2019 | Amber |
| THAMES WATER PENSION TRUSTEES (MIS) LIMITED | 02403835 | 02/10/2017 | 30/07/2021 | Not Trading |
| THAMES WATER PENSION TRUSTEES LIMITED | 02228533 | 02/10/2017 | 30/07/2021 | Bronze |
| THAMES WATER PROPERTY SERVICES LIMITED | 02606112 | 01/04/2018 | 26/07/2019 | One Red Flag |
| THAMES WATER UTILITIES FINANCE PLC | 02403744 | 27/09/2017 | 26/07/2018 | Silver |
| WALES & WEST UTILITIES PENSION SCHEME TRUSTEES LIMITED | 05750643 | 01/09/2013 | 09/12/2015 | Not Trading |