| SOUTHERN WATER SERVICES LIMITED | Macquarie | financial services | water pollution violation | 2011 | UK-EA | £96,000 |
| Southern Water Services Limited | Macquarie | financial services | water pollution violation | 2011 | UK-EA | £50,000 |
| SOUTHERN WATER SERVICES LTD | Macquarie | financial services | water pollution violation | 2021 | UK-EA | £90,000,000 |
| THAMES WATER UTILITIES LIMITED | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2011 | UK-EA | £204,000 |
| Thames Water Utilities Limited | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2010 | UK-EA | £50,000 |
| Thames Water Utilities Limited | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2021 | UK-EA | £122,520 |
| TOTAL UK LIMITED | TotalEnergies SE | oil and gas | water pollution violation | 2010 | UK-EA | £600,000 |
| YORKSHIRE WATER SERVICES LIMITED | Kelda Group | utilities and power generation | water pollution violation | 2021 | UK-EA | £150,000 |
| MILLER HOMES LIMITED | Apollo Global Management | private equity (including portfolio companies) | water pollution violation | 2021 | UK-EA | £208,670 |
| THAMES WATER UTILITIES LIMITED | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2021 | UK-EA | £4,090,713 |
| SEVERN TRENT WATER LIMITED | Severn Trent PLC | utilities and power generation | water pollution violation | 2021 | UK-EA | £529,182 |
| NORTHUMBRIA WATER LIMITED | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2021 | UK-EA | £682,170 |
| SEVERN TRENT WATER LIMITED | Severn Trent PLC | utilities and power generation | water pollution violation | 2021 | UK-EA | £1,029,182 |
| Yorkshire Water Services Ltd | Kelda Group | utilities and power generation | water pollution violation | 2022 | UK-EA | £251,936 |
| Northumbrian Water Limited | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2022 | UK-EA | £274,000 |
| Northumbrian Water Limited | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2021 | UK-EA | £165,000 |
| Severn Trent Water Limited | Severn Trent PLC | utilities and power generation | water pollution violation | 2021 | UK-EA | £112,000 |
| Severn Trent Water Limited | Severn Trent PLC | utilities and power generation | water pollution violation | 2021 | UK-EA | £270,000 |
| Yorkshire Water Services Limited | Kelda Group | utilities and power generation | water pollution violation | 2021 | UK-EA | £300,000 |
| Yorkshire Water Services Limited | Kelda Group | utilities and power generation | water pollution violation | 2022 | UK-EA | £150,000 |
| Yorkshire Water Services Limited | Kelda Group | utilities and power generation | water pollution violation | 2022 | UK-EA | £250,000 |
| Anglian Water Limited | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2022 | UK-EA | £300,000 |
| Yorkshire Water Services Ltd. | Kelda Group | utilities and power generation | water pollution violation | 2022 | UK-EA | £1,623,032 |
| Chivas Brothers Limited | Pernod Ricard | beverages | water pollution violation | 2022 | UK-SEPA | £19,600 |
| Scottish Water | Scottish Water | utilities and power generation | water pollution violation | 2021 | UK-SEPA | £52,298 |
| ANGLIAN WATER SERVICES LIMITED | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2022 | UK-EA | £368,802 |
| ANGLIAN WATER SERVICES LIMITED | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2022 | UK-EA | £521,302 |
| Cranswick Country Foods PLC | Cranswick PLC | food products | water pollution violation | 2022 | UK-EA | £90,000 |
| ANGLIAN WATER SERVICES LIMITED | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2023 | UK-EA | £510,000 |
| INTERNATIONAL PAINT LIMITED | Akzo Nobel | paints and coatings | water pollution violation | 2023 | UK-EA | £650,000 |
| Dwr Cymru Cyfyngedig (Welsh Water) | Dwr Cymru Cyfyngedig (Welsh Water) | utilities and power generation | water pollution violation | 2023 | UK-EA | £50,000 |
| WINVIC CONSTRUCTION LIMITED | | | water pollution violation | 2023 | UK-EA | £160,000 |
| ANGLIAN WATER SERVICES LIMITED | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2023 | UK-EA | £316,690 |
| South West Water | Pennon Group PLC | utilities and power generation | water pollution violation | 2023 | UK-EA | £2,150,000 |
| Dŵr Cymru | Dwr Cymru Cyfyngedig (Welsh Water) | utilities and power generation | water pollution violation | 2010 | UK-DWI | £0 |
| Thames Water | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2011 | UK-DWI | £0 |
| Northumbrian Water Ltd | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2011 | UK-DWI | £0 |
| Wessex Water | YTL Power International | utilities and power generation | water pollution violation | 2011 | UK-DWI | £0 |
| United Utilities | United Utilities Group PLC | utilities and power generation | water pollution violation | 2013 | UK-DWI | £0 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2017 | UK-DWI | £0 |
| South Staffs Water | Arjun Infrastructure Partners | utilities and power generation | water pollution violation | 2018 | UK-DWI | £0 |
| United Utilities | United Utilities Group PLC | utilities and power generation | water pollution violation | 2018 | UK-DWI | £0 |
| South Staffs Water | Arjun Infrastructure Partners | utilities and power generation | water pollution violation | 2020 | UK-DWI | £0 |
| SES Water | Pennon Group PLC | utilities and power generation | water pollution violation | 2020 | UK-DWI | £0 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2020 | UK-DWI | £0 |
| Thames Water | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2023 | UK-DWI | £0 |
| Southern Water | Macquarie | financial services | water pollution violation | 2023 | UK-DWI | £0 |
| Southern Water Services Ltd | Macquarie | financial services | water pollution violation | 2022 | UK-DWI | £65,571 |
| Thames Water Utilities Ltd | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2019 | UK-DWI | £239,959 |
| Northumbrian Water Ltd | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2019 | UK-DWI | £532,687 |
| Southern Water Services Ltd | Macquarie | financial services | water pollution violation | 2018 | UK-DWI | £109,620 |
| United Utilities Water Ltd | United Utilities Group PLC | utilities and power generation | water pollution violation | 2018 | UK-DWI | £254,000 |
| United Utilities Water Ltd | United Utilities Group PLC | utilities and power generation | water pollution violation | 2017 | UK-DWI | £450,000 |
| Southern Water Services Ltd | Macquarie | financial services | water pollution violation | 2017 | UK-DWI | £530,000 |
| Sembcorp Bournemouth Water | Pennon Group PLC | utilities and power generation | water pollution violation | 2015 | UK-DWI | £133,892 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2014 | UK-DWI | £92,070 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2012 | UK-DWI | £28,663 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2012 | UK-DWI | £22,663 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2012 | UK-DWI | £62,663 |
| Northumbrian Water | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2012 | UK-DWI | £22,502 |
| Southern Water | Macquarie | financial services | water pollution violation | 2012 | UK-DWI | £26,498 |
| Southern Water | Macquarie | financial services | water pollution violation | 2010 | UK-DWI | £31,447 |
| Northumbrian Water | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2023 | UK-DWI | £0 |
| United Utilities | United Utilities Group PLC | utilities and power generation | water pollution violation | 2022 | UK-DWI | £0 |
| SES Water | Pennon Group PLC | utilities and power generation | water pollution violation | 2022 | UK-DWI | £0 |
| Southern Water | Macquarie | financial services | water pollution violation | 2022 | UK-DWI | £0 |
| Affinity Water | Daiwater Investment Limited | utilities and power generation | water pollution violation | 2022 | UK-DWI | £0 |
| Southern Water | Macquarie | financial services | water pollution violation | 2021 | UK-DWI | £0 |
| South Staffordshire Water | Arjun Infrastructure Partners | utilities and power generation | water pollution violation | 2020 | UK-DWI | £0 |
| Dwr Cymru Welsh Water | Dwr Cymru Cyfyngedig (Welsh Water) | utilities and power generation | water pollution violation | 2019 | UK-DWI | £0 |
| SES Water | Pennon Group PLC | utilities and power generation | water pollution violation | 2019 | UK-DWI | £0 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2018 | UK-DWI | £0 |
| Northumbrian Water | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2017 | UK-DWI | £0 |
| United Utilities | United Utilities Group PLC | utilities and power generation | water pollution violation | 2017 | UK-DWI | £0 |
| United Utilities | United Utilities Group PLC | utilities and power generation | water pollution violation | 2017 | UK-DWI | £0 |
| South East Water | | | water pollution violation | 2017 | UK-DWI | £0 |
| SES Water | Pennon Group PLC | utilities and power generation | water pollution violation | 2017 | UK-DWI | £0 |
| Wessex Water | YTL Power International | utilities and power generation | water pollution violation | 2016 | UK-DWI | £0 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2016 | UK-DWI | £0 |
| Wessex Water | YTL Power International | utilities and power generation | water pollution violation | 2016 | UK-DWI | £0 |
| Cambridge Water | Arjun Infrastructure Partners | utilities and power generation | water pollution violation | 2013 | UK-DWI | £0 |
| Pretty Time Shipping | | | water pollution violation | 2011 | UK-MCA | £95,000 |
| OMEX Agriculture Ltd | | | water pollution violation | 2023 | UK-EA | £510,190 |
| Laing O’Rourke Delivery Limited | Laing O'Rourke | construction and engineering | water pollution violation | 2023 | UK-EA | £350,001 |
| Yorkshire Water Services Limited | Kelda Group | utilities and power generation | water pollution violation | 2023 | UK-EA | £235,000 |
| Costain Limited | Costain Group PLC | construction and engineering | water pollution violation | 2023 | UK-EA | £55,000 |
| Anglian Water Services Limited | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2023 | UK-EA | £154,438 |
| THAMES WATER UTILITIES LIMITED | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2023 | UK-EA | £3,458,961 |
| UNITED UTILITIES WATER LIMITED | United Utilities Group PLC | utilities and power generation | water pollution violation | 2023 | UK-EA | £800,000 |
| South West Water Ltd | Pennon Group PLC | utilities and power generation | water pollution violation | 2022 | UK-DWI | £317,470 |
| Wessex Water Services Ltd | YTL Power International | utilities and power generation | water pollution violation | 2023 | UK-DWI | £301,847 |
