| Water-Filter Ltd | London | 2025 |
| Water-Smart-Uk Limited | Barnard Castle | 2023 |
| WATER2BUY Limited | Bromley | 2016 |
| WATER2SAVE Limited | Inverness | 2019 |
| Waterboy Ltd. | Rawtenstall | 2003 |
| Waterbrowns Driving Ltd | Essex | 2025 |
| Watercare Management Services Ltd | Yarm | 2013 |
| Watercare Softeners Limited | Richmond | 2008 |
| Watercare Specialists Limited | Bidford-On-Avon | 2003 |
| Waterchem Ltd | Northwich | 2025 |
| Waterclean Services Limited | Telford | 2009 |
| Watercourse Management Limited | Norwich | 2014 |
| Waterfinity Ltd | Egham | 2026 |
| Waterforce UK Limited | Andover | 2016 |
| Waterguard (London) Limited | Norwich | 2006 |
| Waterhead Close Management (Kingswear) Limited | Dartmouth | 2002 |
| Waterland Events Limited | Brough | 2015 |
| Waterline Environmental Limited | Bolton | 1999 |
| Waterline Products Limited | Antrim | 2013 |
| Waterloo Business Management Ltd | Oldham | 2009 |
| Waterloo Tankers Limited | Preston | 2020 |
| Waterman and SON Ltd | London | 2024 |
| Waterman Environmental Group Limited | Lichfield | 2007 |
| Waterman Waste Management Limited | Cleveland | 1994 |
| Watermills (Water Services) Ltd | Colchester | 2019 |
| Watermills Festivals and Events Limited | Cardiff | 2020 |
| Watermine Limited | Southall | 2017 |
| Waterology Ltd | London | 2020 |
| Waterpartnership Ltd | Prescot | 2021 |
| Waterpro Limited | Liverpool | 2024 |
| Waterr Solutionss Ltd | Ilford | 2025 |
| Watersafe Hygiene Ltd | Cannock | 2024 |
| Waterskills Purification Ltd | Leigh On Sea | 2019 |
| Watersprint Ltd | Birmingham | 2019 |
| Watertec Global Limited | Birmingham | 2024 |
| Watertec Limited | Burntwood | 2017 |
| Watertec Solutions Limited | Enfield | 2016 |
| Watertech Installations Limited | Kidderminster | 2012 |
| Watertight International Ltd | Bangor | 2026 |
| Watertite Limited | Haywards Heath | 1995 |
| Waterway Projects Ltd | Rickmansworth | 2014 |
| Waterways Drainage Specialists Ltd | Salisbury | 2018 |
| Waterwhelm Ltd | Edinburgh | 2018 |
| Waterwise Engineering Ltd | Axminster | 1996 |
| Waterworks (NW) Ltd | Liverpool | 2020 |
| Waterworxuk Ltd | Preston | 2018 |
| Watsons of Bedlington Limited | Bedlington | 2004 |
| Watt Environmental Services Limited | London | 2022 |
| Watts (Rugby) Limited | Rugby | 2003 |
| WAV Resources Limited | Salford | 2016 |
| Wave Environmental Solutions Ltd | Caerphilly | 2016 |
| Wavertree Waste and 3 C'S Skip Hire Limited | Liverpool | 1993 |
| Wayford Water Company Limited | Crewkerne | 2012 |
| Wayne for Drains Ltd | Ilkeston | 2017 |
| Wayne Perry Skips (UK) Ltd | Burntwood | 2005 |
| Wayne's World of Waste Removal Ltd | Swansea | 2019 |
| Waynes Waste & Clearance Ltd | Carshalton | 2026 |
| WB Drainage Ltd | Warrington | 2019 |
| WB Environmental Limited | Wrexham | 2014 |
| WBG Environmental Limited | Milford Haven | 2026 |
| Wblam Mould Removal Ltd | London | 2025 |
| WBM Holdings Limited | Oldham | 2019 |
| WBR Solutions Ltd | Bournemouth | 2024 |
| WC Environmental Ltd | Sheffield | 2024 |
| WCG Environmental Limited | Sheffield | 2015 |
| WCR Resources Ltd | London | 2020 |
| WD Drain Services Ltd | Preston | 2015 |
| WD Skips Limited | Bushey | 2014 |
| WDF Environmental Services Ltd | Oldham | 2026 |
| Wdmb Drainage Ltd | Christchurch | 2022 |
| WE ARE Drainage Ltd | London | 2024 |
| WE ARE Movers Ltd | London | 2024 |
| WE ARE Skips.Com Ltd | Colchester | 2020 |
| WE Buy Circuit Boards Ltd | Mansfield | 2026 |
| WE Buy Waste OIL Ltd | Greater Manchester | 2011 |
| WE Buy Your Metal Ltd | London | 2023 |
| WE CAN Clear IT Ltd | Bury St. Edmunds | 2019 |
| WE CAN Clear Limited | Rochdale | 2025 |
| WE CAN Community CIC | Solihull | 2023 |
| WE Clear ANY Drains Ltd | Derby | 2012 |
| WE Clear ANY Property Ltd | London | 2024 |
| WE Clear Blockages.Com Limited | Preston | 2017 |
| WE Clear Everything Waste Limited | London | 2025 |
| WE Clear Homes Ltd | Stoke-On-Trent | 2025 |
| WE Clear LDN Limited | Belvedere | 2024 |
| WE Clear London Ltd | Beckenham | 2025 |
| WE Clear Ltd | Newark | 2022 |
| WE Collect ANY Waste Limited | Ashtead | 2021 |
| WE Collect I.T. Ltd | West Malling | 2015 |
| WE Collect Limited | West Malling | 2011 |
| WE Collect Tyres Ltd | London | 2024 |
| WE Dispose Ltd | Ilford | 2026 |
| WE DO Drains Ltd | Witham | 2023 |
| WE DO Management Ltd | London | 2017 |
| WE Dump 4 U Ltd | Plymstock | 2021 |
| WE Dump Your Junk Ltd | Bangor | 2024 |
| WE Engineering & Consultancy Ltd | London | 2019 |
| WE Go Green Ltd | London | 2021 |
| WE Like to Move IT Ltd | Ipswich | 2025 |
| WE Load & Go Rubbish Collection Services Ltd Limited | Fawkham | 2003 |