| Wormtech Limited | Cardiff | 2002 |
| Worsthorne Mini Skips Limited | Burnley | 2002 |
| Worth Recycling Limited | Bury | 2025 |
| Worthangac Ltd | London | 2025 |
| Worthy Renewables Limited | Chepstow | 2018 |
| Wplscot Ltd | Glasgow | 2021 |
| WPP Energy UK Limited | Ferndown | 2019 |
| Wprs Limited | West Midlands | 2007 |
| WPT Recovered Fibres Ltd | London | 2021 |
| WR Pacific Ltd | Middlesbrough | 2023 |
| WR Property Services Limited | London | 2015 |
| Wrap Ltd | Wallingford | 1999 |
| Wrawby Contracts Limited | Cleckheaton | 2010 |
| Wrawby Services Limited | Cleckheaton | 1987 |
| Wray Environmental Services Limited | Malpas | 2012 |
| Wraysbury Resource Management Limited | Staines-Upon-Thames | 2024 |
| WRC Recycling Limited | Renfrew | 2009 |
| Wrco Limited | Reading | 2018 |
| WRD Services Ltd | Cheltenham | 2023 |
| Wreck and Waste Limited | London | 2025 |
| Wrecsam Wrecycled Ltd | Wrexham | 2008 |
| Wrekin Drain Services Ltd | Telford | 2012 |
| Wren Renewables Limited | Pembridge | 2014 |
| Wrff Limited | London | 2023 |
| WRG (Midlands) Limited | Airdrie | 1966 |
| WRG (Northern) Limited | Airdrie | 1986 |
| WRG Environmental Limited | Doncaster | 1987 |
| Wrigglesworth Textiles Ltd | Dewsbury | 2003 |
| Wright Recovery Solutions Limited | Kilamarsh | 2018 |
| Wright Recycling Limited | Newtownards | 2010 |
| Wright Signs Manufacturing Limited | Monkspath, Solihull | 1989 |
| Wright Skips Environmental Limited | Colchester | 2021 |
| Wright Skips Limited | Gloucester | 2007 |
| Wright Waste Disposal Limited | Brentwood | 2025 |
| Wright Waste Management Ltd | Newtownards | 2005 |
| Wrights Exterior Cleaning Services Ltd | Waterlooville | 2025 |
| Wrights of Crockey Hill Ltd | York | 2005 |
| Wrights of Twycross Limited | Atherstone | 2015 |
| Wrights Waste Management Ltd | Aylesbury | 2023 |
| Wrightvanremovals Ltd | Colchester | 2025 |
| Wrongfuelquickfit Ltd | Hertford | 2026 |
| Wrsuk Ltd | Exeter | 2025 |
| WRW Global Limited | Tunbridge Wells | 2017 |
| WS Wright Tipping Ltd | Lincoln | 2019 |
| WSK Water Services Ltd | Aylesbury | 2015 |
| WSM Associates Limited | Southampton | 2002 |
| WSM Recycling Limited | Ipswich | 2006 |
| WSM Spares & Salvage Limited | Ipswich | 2006 |
| WSR Recycling Limited | Cheshire | 1990 |
| WSS Services Ltd | London | 2015 |
| WSS Skips & Waste Ltd | Sheffield | 2017 |
| WTC Group Ltd | Chichester | 2025 |
| WTD Group Ltd | Bedworth | 2018 |
| WTE Global Ltd | Basildon | 2019 |
| Wttech Ltd | London | 2026 |
| WU11SON Waste Management Ltd | Ayr | 2020 |
| Wuber Limited | Plymouth | 2026 |
| WW Waste Ltd | Richmond | 2025 |
| WWT Solutions Limited | Dartford | 2024 |
| Wyatt Aggregates Ltd | London | 2022 |
| Wycombe Recycling Limited | High Wycombe | 2007 |
| Wycombe Waste Clearance Ltd | High Wycombe | 2024 |
| WYE Waste Paper Limited | Ledbury | 1998 |
| Wyllie Recycling Limited | Perth | 2003 |
| Wyndham Resources (Group) Limited | Appledore | 2020 |
| Wyndham Resources (UK) Limited | Appledore | 2009 |
| Wynsdale Group Ltd | Kent | 2011 |
| Wyre Forest Drains Limited | Kidderminster | 2010 |
| Wyre Forest Recycling Services Limited | Birmingham | 1996 |
| Wyre Waste Removals Limited | Poulton Le Fylde | 2024 |
| X I Skips Limited | Grimsby | 2015 |
| X-Bert Haulage Limited | London | 2001 |
| X-Met Metals Limited | Wigan | 2012 |
| Xact Skips Ltd | Wrexham | 2017 |
| Xbour Ltd | Basingstoke | 2026 |
| Xcite in Cloud, IT, Telecom, Engineering & Secure IT Recycling, Data Disposals Solutions Ltd | Nuneaton | 2023 |
| Xepure UK Ltd | Ashford | 2025 |
| Xeroc Ltd | Stockton On Tees | 2021 |
| Xeroplas Belfast Limited | Ballyclare | 2019 |
| Xetrov Energy Limited | Daventry | 2018 |
| Xflow Water Treatment Ltd | Cardiff | 2019 |
| Ximo Limited | Bideford | 2023 |
| Xion Water Technologies Ltd | Peterborough | 2019 |
| Xorvex Limited | Failsworth | 2024 |
| Xpert Contracts Ltd | Harwich | 2023 |
| XPO Trading Ltd | Telford | 2017 |
| Xpolyma Recycling Limited | Rochester | 2024 |
| Xpress Business Solutions Ltd | Salisbury | 2009 |
| Xpress Waste Ltd | Birmingham | 2025 |
| Xrecycling Ltd | Leicester | 2021 |
| Xstrade Limited | Potters Bar | 2014 |
| Xtraction Technologies Limited | London | 2024 |
| Xuvinox Ltd | Edinburgh | 2025 |
| Xworks Trading Ltd | London | 2023 |
| YA Management Services Ltd | Southall | 2023 |
| Yahya Traders Ltd | Bury | 2020 |
| Yalu Clearance Ltd | Barnet | 2018 |
| Yanis Andrei Limited | Northampton | 2019 |
| Yard Share Ltd | Morden | 2019 |
| Yate Car Breakers Ltd | Yate, Bristol | 2002 |