| 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 |
| 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 Developments PLC | 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 Limited | | | 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 |
| 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 Developments PLC | real estate | environmental violation | 2023 | UK-EA | £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 |
| 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 |
| The Jet Centre dba The Private Jet Company | | | environmental violation | 2016 | UK-EA | £69,345 |
| Buchan (E104) Limited | | | commercial fishing violation | 2019 | UK-MMO | £68,625 |
| J & G Environmental Ltd | | | water pollution violation | 2024 | UK-EA | £68,500 |
| P3P Energy Management Ltd | | | climate change regime violation | 2016 | UK-EA | £66,584 |
| Bel Air Ltd | | | environmental violation | 2016 | UK-EA | £66,124 |
| Severn Trent Water Limited | Severn Trent PLC | utilities and power generation | environmental violation | 2016 | UK-EA | £66,000 |
| Southern Water Services Ltd | Macquarie | financial services | water pollution violation | 2022 | UK-DWI | £65,571 |
| Euro Garages Ltd | EG Group | retailing | Environmental Violation | 2017 | UK-NRW | £65,044 |
| E&J Shellfish Limited | | | commercial fishing violation | 2018 | UK-MMO | £65,010 |
| Equinor U.K. Limited | Equinor | oil and gas | oil drilling violation | 2022 | UK-NSTA | £65,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | water pollution violation | 2017 | UK-EA | £64,500 |
| Focus International Limited | JD Sports Fashion | retailing | environmental violation | 2014 | UK-EA | £64,489 |
| Pentair SSC UK Limited | Emerson Electric | industrial equipment | environmental violation | 2018 | UK-EA | £63,717 |
| Ameycespa (East) Ltd | Amey Limited | miscellaneous energy products and systems | environmental violation | 2016 | UK-EA | £63,336 |
| Seewoo Foods Limited | | | environmental violation | 2010 | UK-EA | £63,000 |
| Severn Trent Water | Severn Trent PLC | utilities and power generation | water pollution violation | 2012 | UK-DWI | £62,663 |
| Severn Trent Water Limited | Severn Trent PLC | utilities and power generation | water pollution violation | 2020 | UK-EA | £60,892 |
| Bahrain Royal Flight | | | environmental violation | 2016 | UK-EA | £60,698 |
| Northern Ireland Water Limited (NIWL) | Northern Ireland Water Limited | utilities and power generation | Environmental Violation | 2018 | UK-NIEA | £60,000 |
| MES Environmental Limited | | | environmental violation | 2020 | UK-EA | £60,000 |
| Network Rail Infrastructure Limited | Network Rail | miscellaneous services | water pollution violation | 2018 | UK-EA | £60,000 |
| Shanks Waste Management Limited nka Renewi UK Services Limited | | | water pollution violation | 2018 | UK-EA | £60,000 |
| Anglian Water Services Limited | Anglian Water Group Limited | utilities and power generation | environmental violation | 2017 | UK-EA | £60,000 |
| 99p Stores Ltd | | | environmental violation | 2012 | UK-EA | £60,000 |
| Novo Nordisk Ltd | Novo Holdings A/S | pharmaceuticals | environmental violation | 2012 | UK-EA | £60,000 |
| R Plevin & Sons Ltd | R Plevin & Sons Ltd | building materials | environmental violation | 2020 | UK-EA | £60,000 |
| Gloucester Gateway Limited | | | water pollution violation | 2020 | UK-EA | £60,000 |
| Taylor Wimpey UK Limited | Taylor Wimpey PLC | construction and engineering | environmental violation | 2021 | UK-EA | £60,000 |
