| Taylor Wimpey UK Limited | Taylor Wimpey PLC | construction and engineering | environmental violation | 2021 | UK-EA | £60,000 |
| Interserve Construction Ltd | | | water pollution violation | 2017 | UK-EA | £59,955 |
| Chilli Marketing Brand Management Limited | | | environmental violation | 2015 | UK-EA | £59,405 |
| Walsh Mushrooms | | | water pollution violation | 2017 | UK-EA | £58,888 |
| Parry & Evans Recycling Services Ltd | | | Environmental Violation | 2017 | UK-NRW | £58,000 |
| Tower Regeneration Limited | | | water pollution violation | 2021 | UK-NRW | £56,781 |
| Midroc Aviation | | | environmental violation | 2016 | UK-EA | £56,460 |
| Guiding Light Ltd | | | commercial fishing violation | 2023 | UK-MMO | £56,103 |
| Sundorne Products (Llanidloes) Ltd | | | Environmental Violation | 2019 | UK-NRW | £55,400 |
| Tulip Limited | | | environmental violation | 2017 | UK-EA | £55,125 |
| RWG (Repair and Overhauls) Limited | | | climate change regime violation | 2018 | UK-SEPA | £55,106 |
| Secanim Ltd | | | climate change regime violation | 2017 | UK-EA | £55,022 |
| Costain Limited | Costain Group PLC | construction and engineering | water pollution violation | 2023 | UK-EA | £55,000 |
| Walsh Mushrooms Unlimited | | | environmental violation | 2020 | UK-EA | £54,880 |
| Edenstone Homes Limited | | | water pollution violation | 2024 | UK-NRW | £54,762 |
| United Utilities Water Limited | United Utilities Group PLC | utilities and power generation | water pollution violation | 2019 | UK-EA | £53,760 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | water pollution violation | 2017 | UK-EA | £53,334 |
| Donald Ward Ltd | | | environmental violation | 2016 | UK-EA | £52,500 |
| Scottish Water | Scottish Water | utilities and power generation | water pollution violation | 2021 | UK-SEPA | £52,298 |
| Embraer SA | Embraer | aerospace and military contracting | environmental violation | 2016 | UK-EA | £52,136 |
| Batt Cables PLC | | | environmental violation | 2014 | UK-EA | £52,000 |
| Spirit Pub Company (Services) Ltd | CK Asset Holdings Limited | diversified | water pollution violation | 2015 | UK-EA | £51,572 |
| Spirit Pub Company (Services) Ltd | CK Asset Holdings Limited | diversified | water pollution violation | 2015 | UK-EA | £51,572 |
| Spirit Pub Company (Services) Ltd | CK Asset Holdings Limited | diversified | water pollution violation | 2015 | UK-EA | £51,572 |
| Mccann Plant NW Limited | | | environmental violation | 2011 | UK-EA | £51,000 |
| Tripp Limited | | | environmental violation | 2018 | UK-EA | £50,750 |
| Northumbrian Water Limited | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2023 | UK-EA | £50,000 |
| Northumbrian Water | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2024 | UK-EA | £50,000 |
| Northumbrian Water Limited | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2018 | UK-EA | £50,000 |
| Integrated Waste Management Limited | FCC Group | construction and engineering | environmental violation | 2017 | UK-EA | £50,000 |
| BP | BP | oil and gas | oil drilling violation | 2021 | UK-NSTA | £50,000 |
| Southern Water Services Limited | Macquarie | financial services | environmental violation | 2012 | UK-EA | £50,000 |
| Safapac Limited | | | water pollution violation | 2013 | UK-EA | £50,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | water pollution violation | 2014 | UK-EA | £50,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | water pollution violation | 2014 | UK-EA | £50,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | water pollution violation | 2014 | UK-EA | £50,000 |
| Ace Waste Haulage Ltd | | | environmental violation | 2015 | UK-EA | £50,000 |
| Molson Coors Brewing Company (UK) Ltd | Molson Coors Beverage | beverages | water pollution violation | 2016 | UK-EA | £50,000 |
| Molson Coors Brewing Company (UK) Ltd | Molson Coors Beverage | beverages | water pollution violation | 2016 | UK-EA | £50,000 |
| Envirosol Ltd | RED Industries | waste management and environmental services | hazardous waste violation | 2016 | UK-EA | £50,000 |
| Envirosol Ltd | RED Industries | waste management and environmental services | hazardous waste violation | 2016 | UK-EA | £50,000 |
| Envirosol Ltd | RED Industries | waste management and environmental services | hazardous waste violation | 2016 | UK-EA | £50,000 |
| Chemtech Waste Management Ltd | RED Industries | waste management and environmental services | hazardous waste violation | 2016 | UK-EA | £50,000 |
| Chemtech Waste Management Ltd | RED Industries | waste management and environmental services | hazardous waste violation | 2016 | UK-EA | £50,000 |
| Chemtech Waste Management Ltd | RED Industries | waste management and environmental services | hazardous waste violation | 2016 | UK-EA | £50,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | water pollution violation | 2017 | UK-EA | £50,000 |
| John Jones Civil Engineering and Groundworks Ltd | | | environmental violation | 2019 | UK-EA | £50,000 |
| Anglian Water Services Limited | Anglian Water Group Limited | utilities and power generation | water pollution violation | 2021 | UK-EA | £50,000 |
| Dunhills (Pontefract) PLC | | | water pollution violation | 2021 | UK-EA | £50,000 |
| International Flavours & Fragrances IFF (Great Britain) Limited | International Flavors & Fragrances | chemicals | water pollution violation | 2021 | UK-EA | £50,000 |
| J Suttle Transport Limited | | | environmental violation | 2010 | UK-EA | £50,000 |
| Noble Foods Co | | | water pollution violation | 2020 | UK-EA | £50,000 |
| Southern Water Services Limited | Macquarie | financial services | water pollution violation | 2011 | UK-EA | £50,000 |
| Thames Water Utilities Limited | Thames Water Utilities Ltd. | utilities and power generation | water pollution violation | 2010 | UK-EA | £50,000 |
| Shell UK Limited | Shell PLC | oil and gas | oil drilling violation | 2022 | UK-NSTA | £50,000 |
| Spirit Energy North Sea Limited | Centrica | utilities and power generation | oil drilling violation | 2022 | UK-NSTA | £50,000 |
| Dwr Cymru Cyfyngedig (Welsh Water) | Dwr Cymru Cyfyngedig (Welsh Water) | utilities and power generation | water pollution violation | 2023 | UK-EA | £50,000 |
| Gama Healthcare Limited | | | environmental violation | 2023 | UK-EA | £49,689 |
| 2 SISTERS FOOD GROUP LIMITED | Boparan Holdings Limited | food products | environmental violation | 2010 | UK-EA | £49,500 |
| BZ Air Ltd | | | environmental violation | 2017 | UK-EA | £49,169 |
| Dwr Cymru Welsh Water | Dwr Cymru Cyfyngedig (Welsh Water) | utilities and power generation | water pollution violation | 2019 | UK-NRW | £49,151 |
| Muirhouse Landfill and Dow Waste Management Limited | | | environmental violation | 2018 | UK-SEPA | £49,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | environmental violation | 2014 | UK-EA | £49,000 |
| Ammanford Recycling Limited | | | environmental violation | 2024 | UK-NRW | £48,652 |
| T I Midwood & Co Limited | | | environmental violation | 2022 | UK-EA | £48,628 |
| Tyco Holdings (UK) Limited | Johnson Controls | automotive parts | environmental violation | 2018 | UK-EA | £48,309 |
| THAMES WATER UTILITIES LIMITED | Thames Water Utilities Ltd. | utilities and power generation | environmental violation | 2010 | UK-EA | £48,000 |
| BLUE ANCHOR LEISURE LIMITED | | | environmental violation | 2010 | UK-EA | £47,500 |
| Lea & Sandeman Company Limited | | | environmental violation | 2015 | UK-EA | £47,050 |
| Weir Waste Services Ltd | Energy Capital Partners | private equity (including portfolio companies) | environmental violation | 2016 | UK-EA | £46,250 |
| Fonthill Waters Limited | | | environmental violation | 2021 | UK-EA | £46,119 |
| Whites Recycling Limited | TPG Capital | private equity (including portfolio companies) | water pollution violation | 2017 | UK-EA | £46,000 |
| Pretoria Energy Company (Arable) Limited | | | environmental violation | 2019 | UK-EA | £45,648 |
| GP Biotec Ltd | | | Environmental Violation | 2018 | UK-NRW | £45,320 |
| Sazerac UK Limited | | | environmental violation | 2022 | UK-EA | £45,088 |
| Buxton Power Limited (In Administration) | | | environmental violation | 2021 | UK-EA | £45,020 |
| Recyclogical Limited | | | environmental violation | 2023 | UK-EA | £45,000 |
| Northumbrian Water Limited | Northumbrian Water Limited | utilities and power generation | water pollution violation | 2019 | UK-EA | £45,000 |
| Poundworld Retail Ltd | | | environmental violation | 2015 | UK-EA | £45,000 |
| NOCTON LIMITED | | | environmental violation | 2011 | UK-EA | £45,000 |
| EDWARDS WASTE PAPER LIMITED | | | environmental violation | 2013 | UK-EA | £45,000 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | environmental violation | 2015 | UK-EA | £45,000 |
| Yorkshire Water Services Limited | Kelda Group | utilities and power generation | environmental violation | 2017 | UK-EA | £45,000 |
| FERNS PROPERTY DEVELOPMENT LIMITED | | | environmental violation | 2010 | UK-EA | £45,000 |
| LEEDS BRADFORD INTERNATIONAL AIRPORT LIMITED | | | environmental violation | 2011 | UK-EA | £45,000 |
| NOCTON LIMITED | | | environmental violation | 2011 | UK-EA | £45,000 |
| Cwrt Malle Ltd | | | Environmental Violation | 2017 | UK-NRW | £44,500 |
| Furniture Choice Limited | | | environmental violation | 2023 | UK-EA | £44,488 |
| South West Water Limited | Pennon Group PLC | utilities and power generation | environmental violation | 2019 | UK-EA | £44,000 |
| Abingdon Flooring Limited | | | Environmental Violation | 2019 | UK-NRW | £43,957 |
| Bee Health Limited | | | environmental violation | 2021 | UK-EA | £43,750 |
| Westminster Dredging Company Limited | | | dredging violation | 2015 | UK-MMO | £43,654 |
| All Pallets Limited | | | environmental violation | 2019 | UK-EA | £43,183 |
| Siteserv Recycling (SW) Ltd | | | Environmental Violation | 2019 | UK-NRW | £43,122 |
| Diepzee Visserij Maatschappij Cornelis Vrolijk II BV | | | commercial fishing violation | 2015 | UK-MMO | £43,120 |
| Adriaantje Holdings BV | | | commercial fishing violation | 2015 | UK-MMO | £42,821 |
| SBR Group Developments Limited | | | environmental violation | 2023 | UK-EA | £42,640 |
| 20 Fenchurch Street Limited Partnership | | | environmental violation | 2021 | UK-EA | £42,323 |
| Loid Global Ltd | | | environmental violation | 2015 | UK-EA | £42,217 |
| Severn Trent Water Limited | Severn Trent PLC | utilities and power generation | water pollution violation | 2020 | UK-EA | £40,500 |
| Timothy Taylor and Co Limited | | | environmental violation | 2020 | UK-EA | £40,400 |
