| Office of Water Services (Ofwat)
| Ev 1, 22, 23
|
| Department for Environment, Food and Rural Affairs
| Ev 26 |
| Water UK | Ev 44
|
| Anglian Water Services Ltd | Ev 48
|
| Thames Water Utilities Ltd | Ev 51
|
| United Utilities plc | Ev 55, 67
|
| WaterVoice | Ev 68, 80
|
| Environment Agency | Ev 88
|
| Northumbrian Water Ltd | Ev 100
|
| Chartered Institution of Water and Environmental Management (CIWEM)
| Ev 103 |
| Royal Society for the Protection of Birds (RSPB)
| Ev 105 |
| Institution of Civil Engineers Water Board |
Ev 108 |
| Association of British Insurers | Ev 109
|
| English Nature | Ev 114
|
| Pippa Woods | Ev 117
|
| National Consumer Council | Ev 117
|
| Office for National Statistics | Ev 121
|
| Department for Work and Pensions | Ev 121
|
| Unison | Ev 121
|
