| Severn Trent Water Limited | Severn Trent PLC | utilities and power generation | water pollution violation | 2016 | UK-EA | £120,000 |
| Harron Homes Limited | | | water pollution violation | 2017 | UK-EA | £120,000 |
| Springhill Farms (Pershore) Ltd | | | environmental violation | 2022 | UK-EA | £120,000 |
| Execujet Middle East Llc | | | environmental violation | 2017 | UK-EA | £115,300 |
| Northumbrian Water Limited | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2021 | UK-EA | £115,000 |
| Associated Waste Management Ltd | Macquarie | financial services | environmental violation | 2017 | UK-EA | £112,500 |
| Weetabix Limited | Post Holdings | food products | water pollution violation | 2019 | UK-EA | £112,000 |
| Severn Trent Water Limited | Severn Trent PLC | utilities and power generation | water pollution violation | 2021 | UK-EA | £112,000 |
| CHARLES ROBERTSON (DEVELOPMENTS) LIMITED | | | environmental violation | 2011 | UK-EA | £111,000 |
| Taw and Torridge Coaches Ltd | | | water pollution | 2024 | UK-EA | £110,382 |
| Anglo Beef Processors UK | | | water pollution violation | 2020 | UK-EA | £110,000 |
| Affinity Water Limited | Daiwater Investment Limited | utilities and power generation | water pollution violation | 2018 | UK-EA | £110,000 |
| Southern Water Services Ltd | Macquarie | financial services | water pollution violation | 2018 | UK-DWI | £109,620 |
| VolkerFitzpatrick Ltd | | | solid waste violation | 2019 | UK-NRW | £109,000 |
| Exhaust Tyres and Batteries (Worcester) Limited | | | environmental violation | 2023 | UK-EA | £107,463 |
| Welsh Water Ltd | Dwr Cymru Cyfyngedig (Welsh Water) | utilities and power generation | water pollution violation | 2024 | UK-EA | £104,275 |
| Addo Food Group Limited | | | environmental violation | 2023 | UK-EA | £104,000 |
| B Braun Medical Limited | B. Braun Melsungen | medical equipment and supplies | environmental violation | 2012 | UK-EA | £103,000 |
| Suez Recycling and Recovery UK Limited | Suez Group | waste management and environmental services | water pollution violation | 2018 | UK-EA | £101,700 |
| Prax Lindsey Oil Refinery Limited | Prax Group | oil and gas | environmental violation | 2023 | UK-EA | £100,000 |
| Thames Water Utilities Limited | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2023 | UK-EA | £100,000 |
| Sellafield Limited | Sellafield Limited | miscellaneous services | environmental violation | 2013 | UK-EA | £100,000 |
| Sellafield Limited | Sellafield Limited | miscellaneous services | environmental violation | 2013 | UK-EA | £100,000 |
| Sellafield Limited | Sellafield Limited | miscellaneous services | environmental violation | 2013 | UK-EA | £100,000 |
| Sellafield Limited | Sellafield Limited | miscellaneous services | environmental violation | 2013 | UK-EA | £100,000 |
| Sellafield Limited | Sellafield Limited | miscellaneous services | environmental violation | 2013 | UK-EA | £100,000 |
| Sellafield Limited | Sellafield Limited | miscellaneous services | environmental violation | 2013 | UK-EA | £100,000 |
| NEO Energy Production UK Limited | | | oil drilling violation | 2024 | UK-NSTA | £100,000 |
| Axil Integrated Services Limited | | | hazardous waste violation | 2024 | UK-EA | £100,000 |
| Anglian Water Services Limited | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2020 | UK-EA | £100,000 |
| Severn Trent Water Limited | Severn Trent PLC | utilities and power generation | water pollution violation | 2020 | UK-EA | £100,000 |
| SUEZ Recycling and Recovery Southern Limited | Suez Group | waste management and environmental services | water pollution violation | 2020 | UK-EA | £100,000 |
| Tesco Distribution Limited | Tesco PLC | retailing | environmental violation | 2018 | UK-EA | £100,000 |
| Anglian Water Services Limited | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2017 | UK-EA | £100,000 |
| Anglian Water Services Limited | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2017 | UK-EA | £100,000 |
| Anglian Water Services Limited | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2017 | UK-EA | £100,000 |
| ALBERT HILL SKIP HIRE LIMITED | | | environmental violation | 2013 | UK-EA | £100,000 |
| SELLAFIELD LIMITED | Sellafield Limited | miscellaneous services | environmental violation | 2014 | UK-EA | £100,000 |
| SELLAFIELD LIMITED | Sellafield Limited | miscellaneous services | environmental violation | 2014 | UK-EA | £100,000 |
| SELLAFIELD LIMITED | Sellafield Limited | miscellaneous services | environmental violation | 2014 | UK-EA | £100,000 |
| SELLAFIELD LIMITED | Sellafield Limited | miscellaneous services | environmental violation | 2014 | UK-EA | £100,000 |
| SELLAFIELD LIMITED | Sellafield Limited | miscellaneous services | environmental violation | 2014 | UK-EA | £100,000 |
| SELLAFIELD LIMITED | Sellafield Limited | miscellaneous services | environmental violation | 2014 | UK-EA | £100,000 |
| ROLLS ROYCE MARINE POWER OPERATIONS LIMITED | Rolls-Royce | aerospace and military contracting | environmental violation | 2014 | UK-EA | £100,000 |
| THAMES WATER UTILITIES LIMITED | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2014 | UK-EA | £100,000 |
| Albany Homes International Ltd | | | environmental violation | 2015 | UK-EA | £100,000 |
| Essar Oil (UK)Ltd | Essar Group | diversified | environmental violation | 2015 | UK-EA | £100,000 |
| Essar Oil (UK)Ltd | Essar Group | diversified | environmental violation | 2015 | UK-EA | £100,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | water pollution violation | 2015 | UK-EA | £100,000 |
| Powerday PLC | | | environmental violation | 2016 | UK-EA | £100,000 |
| Miller Homes Limited | Apollo Global Management | private equity (including portfolio companies) | environmental violation | 2016 | UK-EA | £100,000 |
| Mid UK Recycling Limited | | | environmental violation | 2018 | UK-EA | £100,000 |
| John Jones Civil Engineering and Groundworks Ltd | | | environmental violation | 2018 | UK-EA | £100,000 |
| Anglian Water Services Ltd | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2021 | UK-EA | £100,000 |
| BDW Trading Limited | Barratt Redrow | real estate | water pollution violation | 2021 | UK-EA | £100,000 |
| Whites Recycling Limited | TPG Capital | private equity (including portfolio companies) | environmental violation | 2022 | UK-EA | £100,000 |
| Phillips 66 Limited | Phillips 66 | oil and gas | environmental violation | 2022 | UK-EA | £100,000 |
| Thames Water Utilities Limited | Thames Water Utilities Ltd. | utilities and power generation | environmental violation | 2022 | UK-EA | £100,000 |
| Muller UK & Ireland Group Limited | Muller Group | food products | environmental violation | 2023 | UK-EA | £100,000 |
| Bellway Homes Limited | Bellway PLC | construction and engineering | environmental violation | 2023 | UK-EA | £100,000 |
| Keepmoat Homes Ltd | | | environmental violation | 2023 | UK-EA | £100,000 |
| SOUTHERN WATER SERVICES LIMITED | Macquarie | financial services | water pollution violation | 2011 | UK-EA | £96,000 |
| Pretty Time Shipping | | | water pollution violation | 2011 | UK-MCA | £95,000 |
| GLJ Recycling Ltd | | | Environmental Violation | 2022 | UK-NRW | £94,294 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2014 | UK-DWI | £92,070 |
| Cranswick Country Foods PLC | Cranswick PLC | food products | water pollution violation | 2022 | UK-EA | £90,000 |
| Hinkcroft Transport Limited | | | environmental violation | 2011 | UK-EA | £87,837 |
| Associated Waste Management Ltd | Macquarie | financial services | environmental violation | 2017 | UK-EA | £87,500 |
| Smart Garden Products Limited | | | solid waste violation | 2024 | UK-EA | £86,477 |
| Mizkan Euro Ltd | | | environmental violation | 2017 | UK-EA | £84,826 |
| Trade Effluent Services Limited | | | Environmental Violation | 2017 | UK-NRW | £83,900 |
| Donald Ward Ltd | | | environmental violation | 2016 | UK-EA | £82,500 |
| Archimica Chemicals Ltd | | | Environmental Violation | 2013 | UK-NRW | £80,000 |
| European Metal Recycling Limited | Ausurus Group Ltd | metals | environmental violation | 2020 | UK-EA | £80,000 |
| Thames Water Utilities Limited | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2018 | UK-EA | £80,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | water pollution violation | 2015 | UK-EA | £80,000 |
| Thames Water Utilities Ltd. | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2016 | UK-EA | £80,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | water pollution violation | 2017 | UK-EA | £80,000 |
| FIRTH RIXSON METALS LTD | Howmet Aerospace | aerospace and military contracting | water pollution violation | 2017 | UK-EA | £80,000 |
| UPM | UPM | paper and packaging | Environmental Violation | 2017 | UK-NRW | £78,000 |
| United Utilities Water Limited | United Utilities Group PLC | utilities and power generation | water pollution violation | 2018 | UK-EA | £76,000 |
| DBC Site Services 2005 Ltd | | | Environmental Violation | 2021 | UK-NRW | £75,411 |
| BDW Trading Limited | Barratt Redrow | real estate | environmental violation | 2023 | UK-EA | £75,000 |
| DSM Nutritional Products (UK) Limited | DSM-Firmenich | chemicals | climate change regime violation | 2023 | UK-SEPA | £75,000 |
| ONE-Dyas UK Limited | | | oil or gas drilling violation | 2024 | UK-NSTA | £75,000 |
| Wessex Water Services Limited | YTL Power International | utilities and power generation | water pollution violation | 2017 | UK-EA | £75,000 |
| Metal and Waste Recycling Limited | | | environmental violation | 2011 | UK-EA | £75,000 |
| Metal and Waste Recycling Limited | | | environmental violation | 2011 | UK-EA | £75,000 |
| Imerys Minerals Limited | Groupe Bruxelles Lambert | diversified | water pollution violation | 2017 | UK-EA | £75,000 |
| Sitec Limited | | | environmental violation | 2011 | UK-EA | £75,000 |
| Suez UK Environment Limited | Suez Group | waste management and environmental services | environmental violation | 2021 | UK-EA | £75,000 |
| Trago Mills (South Devon) Limited | | | environmental violation | 2011 | UK-EA | £74,000 |
| TATA Steel UK Limited | Tata Group | diversified | environmental violation | 2017 | UK-EA | £73,000 |
| CLEANSING SERVICE GROUP LIMITED | | | environmental violation | 2023 | UK-EA | £72,127 |
| UK Wood Recycling Limited | | | environmental violation | 2016 | UK-EA | £72,000 |
| Associated Waste Management Ltd | Macquarie | financial services | environmental violation | 2011 | UK-EA | £72,000 |
| Dwr Cymru Cyfyngedig | Dwr Cymru Cyfyngedig (Welsh Water) | utilities and power generation | water pollution violation | 2016 | UK-NRW | £70,000 |
| Elizabeth the Chef | | | water pollution | 2024 | UK-EA | £70,000 |
| Imerys Minerals Limited | Groupe Bruxelles Lambert | diversified | water pollution violation | 2017 | UK-EA | £70,000 |
| E & JW Glendinning Limited | | | water pollution violation | 2016 | UK-EA | £70,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | environmental violation | 2017 | UK-EA | £70,000 |
