| Company | Bulk supply transactions |
| Affinity Water
|
AFW bulk supply |
| Anglian Water
|
ANH bulk supply |
| Bristol Water
|
BRL bulk supply |
| Dŵr Cymru
|
WSH bulk supply |
| Hafren Dyfrdwy | HDD bulk supply |
| Independent Water Network | IWNL bulk supply
|
| Leep Networks Water | LNWL bulk supply |
| Northumbrian Water
|
NES bulk supply |
| Portsmouth Water
|
PRT bulk supply |
| Severn Trent Water
|
SVT bulk supply |
| Severn Trent Services
|
STS bulk supply |
| South and East Surrey Water
|
SES bulk supply |
| South East Water
|
SEW bulk supply |
| South Staffs Water
|
SSC bulk supply |
| South West Water
|
SWB bulk supply |
| Southern Water
|
SRN bulk supply |
| Thames Water
|
TMS bulk supply |
| United Utilities
|
UUW bulk supply |
| Veolia Water Projects | VWPL bulk supply |
| Wessex Water
|
WSX bulk supply |
| Yorkshire Water | YKY bulk supply |