Water Companies & Suppliers
- Affinity Water
- Albion Water
- Bournemouth Water
- Bristol Water
- Dee Valley Water
- DWR Cymru Welsh Water
- Independent Water Networks Limited
- Northumbrian Water
- Peel Water
- Portsmouth Water
- Severn Trent Water
- Southern Water
- South East Water
- South Staffs Water
- South West Water
- SSE Water Limited
- Sutton and East Surrey Water
- Thames Water
- United Utilities
- Wessex Water
- Yorkshire Water
- Affinity for Business
- Affinity for Business (Retail) Limited
- Cambrian Utilities Limited
- Clear Business Water Limited
- Invicta Water Limited
- Pennon Water Services Limited
- Regent Water Limited
- Scottish Water Business Stream Limited
- Sutton and East Surrey Water Services Limited
- Three Sixty Water Limited
- The Water Retail Company
- Water Plus
- Wave (a joint venture between Anglian Water Business and NWG Business)