| W Stopher Limited | Beccles | 2006 |
| W Times Limited | Beckenham | 2024 |
| W. & I. Craig (Civil Engineering) Limited | London | 1963 |
| W. Harold John (Metals) Limited | Newport | 1972 |
| W. Hayden Limited | Birmingham | 2011 |
| W. LEE Waste Oils Limited | Carnforth | 2002 |
| W. Lister Limited | | 1952 |
| W.& M.Bendrien Limited | Cardiff | 1964 |
| W.A.R.R. (Midlands) Limited | Birmingham | 2012 |
| W.A.S. Limited | Watton | 1989 |
| W.E. Waste Limited | Maidstone | 2020 |
| W.Edge Company Limited | London | 2021 |
| W.H. Chaloner & SON Limited | Wrexham | 1951 |
| W.J. Smith (Insulations) Limited | Essex | 1964 |
| W.J.Curley & Sons Limited | Orsett | 1960 |
| W.J.Hatt Limited | Reading | 1937 |
| W.K.D. Fitted Bedrooms Limited | Leicester | 1984 |
| W.P.E Services Limited | Lincoln | 2025 |
| W.S.D. Scrap Metal Ltd | Bangor | 2023 |
| W.T.S Water Treatment Services Ltd | Hereford | 2012 |
| W4G Ltd | Corby | 2011 |
| W80LFG Limited | Luton | 2025 |
| W9 Waste Removal Ltd | London | 2024 |
| WAD24/7 Ltd | Ferndown | 2025 |
| Wade & Smith Dredging Limited | Sleaford | 2016 |
| Wade Metals and Recycling Limited | London | 2024 |
| WAI Sang (Europe) Recycle Limited | Manchester | 2003 |
| Waine Souter Tippers Limited | Slough | 2019 |
| Waine TY Service Limited | London | 2025 |
| Wakefield Hospice Trading Limited | Wakefield | 1992 |
| Wakefield Recycling Ltd | Leeds | 2018 |
| Wakeham Asbestos Services Limited | Paignton | 2013 |
| Wales and West Property Clearance Ltd | Chepstow | 2024 |
| Wales Environmental Limited | Cardiff | 1990 |
| Walker CLO2 Technical Services Ltd | Redditch | 2016 |
| Walker Skip Hire Ltd | Newport | 2018 |
| Walkers Multi Services Limited | Lingfield | 2026 |
| Walkers Waste Management Ltd | Surrey | 2024 |
| WALL2WALL Carpets and Flooring Limited | Bolton | 2025 |
| Walleys Quarry Ltd | Brighton | 2015 |
| Walmsley Waste Services Ltd | Skipton | 2025 |
| Walnut Contractors Ltd | Bangor | 2023 |
| Walp Limited | Bridgwater | 2026 |
| Walsall Skip & Grab Hire Limited | Walsall | 2016 |
| Walsh Brothers Industrial Services Ltd. | Clackmannanshire | 1998 |
| Walsh Brothers Waste Management Ltd. | | 2007 |
| Walshcourt Limited | Basingstoke | 1980 |
| Walstons Property Services Ltd | Hatfield | 2024 |
| Walter & Sons Waste Management Limited | Walsall | 2006 |
| Walters Land (Rogerstone) Limited | Aberdare | 2012 |
| Waltet Materials Limited | Southampton | 1996 |
| Waltet Recycling Limited | Southampton | 1988 |
| Walthew Green Association (LBG) Limited | Skelmersdale | 2019 |
| Walton Recycling Ltd | Bridgend | 2021 |
| Wandle Waste Management Limited | London | 2013 |
| Wandsworth Transport Limited | Tooting | 2006 |
| Wansford Environmental Services Limited | Scarborough | 2001 |
| Want 1 Service Ltd | Rayleigh | 2025 |
| Want NOT CIC | South Shields | 2024 |
| Wanted Metal Recycling Limited | West Auckland | 2015 |
| Wanted Skip Hire Ltd | Shildon | 2021 |
| Wanted Wood Recycling Ltd | Shildon | 2018 |
| WAP Enabling Limited | Chatham | 2024 |
| WAP Group Limited | London | 2021 |
| WAR on Waste Ltd | Chorley | 2014 |
| WAR Waste Management Ltd | Romford | 2024 |
| Ward Bros Plant Hire Limited | County Durham | 1971 |
| Ward Bros Skip Hire Limited | County Durham | 2025 |
| Ward Bros. (Steel) Limited | Sale | 1976 |
| Ward Environmental Services Limited | Southwick | 2017 |
| Ward Group Holdings Limited | Ilkeston | 2019 |
| Ward Waste Limited | Bickenhill | 2012 |
| Warden Agri Ltd | Spilsby | 2014 |
| Warden Commodities Limited | Boston | 2022 |
| Wards Waste Management Ltd | Pinner | 2021 |
| Ware Skips Limited | Welwyn Garden City | 2020 |
| Wareham & Purbeck Holdings Limited | Bournemouth | 2010 |
| Wareham & Purbeck Skip Hire Limited | Bournemouth | 2003 |
| Warehouse Services & Solutions Limited | Ilford | 2023 |
| Warenton Water Management Company Limited | Berwick Upon Tweed | 2008 |
| Warhurst Landscaping and Property Services Ltd | Kington | 2026 |
| Waring Waste Limited | Market Harborough | 2015 |
| Warley Waste Clearance Ltd | Smethwick | 2025 |
| Warren Waste Limited | Croydon | 2012 |
| Warrens Group Limited | Buntingford | 1986 |
| Warrington Gate Capital Ltd | Warrington | 2026 |
| Warsill Water Limited | Ripon | 2023 |
| Warsop Recycling Ltd | Ilkeston | 2020 |
| Warwickshire Drain Services Ltd | London | 2017 |
| Warwickshire Recycling Services Limited | Nuneaton | 2002 |
| Warwickshire Waste (Kenilworth) Limited | Warwick | 2005 |
| Warwickshire Wood Chip Limited | Lutterworth | 2016 |
| Wascle Limited | Redruth | 2017 |
| Wash Wombles Litter Pickers CIC | London | 2024 |
| Washington GAS Services Limited | Washington | 2013 |
| WAST3RUS Limited | Birmingham | 2025 |
| Wastage Waste Management Limited | North Ferriby | 2014 |
| Waste & Go Ltd | Harrogate | 2025 |
| Waste & Resource Management Ltd. | Nottingham | 2013 |
| Waste & Site Services Limited | Rickmansworth | 2003 |