| Browns Waste Management and Recycling Limited | Llanelli | 2003 |
| Broxbourne Environmental Services Trading Limited | Waltham Cross | 2018 |
| Broxwater Limited | Kettering | 2017 |
| Bruce Metals Limited | | 1994 |
| Bruflow Plumbing & Drainage Ltd | London | 2026 |
| Brunel Close and Dove Inn Residents Association Ltd | Basingstoke | 2002 |
| Brunel Recycling Ltd | Saltash | 2012 |
| Brunel Waste Limited | Swindon | 2005 |
| Brunel Water Services Ltd | Bristol | 2026 |
| Bryan Hirst Limited | Canterbury | 2006 |
| Bryant's Waste Management Ltd | Kenley | 2020 |
| Bryn Adda Phase 2 Management Company Limited | Bangor | 2010 |
| Bryn Compost Limited | Hengoed | 2004 |
| Bryn Recycling Limited | Gelligaer | 2013 |
| Brynolwg Ltd | Talybont | 2008 |
| Bryson Recycling Limited | Belfast | 2012 |
| Bryson Rubbish Clearance Limited | Maidstone | 2017 |
| Brytech Solutions Ltd | Bolton | 2003 |
| BS Plus Group Limited | London | 2026 |
| BSA Environmental Limited | Solihull | 2018 |
| BSA Recycling Limited | Birmingham | 2015 |
| BSD Waste Limited | Weymouth | 2018 |
| BSH Logistic Limited | London | 2017 |
| BSH Remediation Limited | Smethwick | 2013 |
| BSM (Metals) Ltd | Morecambe | 2012 |
| BSP (Halstead) Limited | East Grinstead | 2022 |
| BSX Limited | Bolton | 2002 |
| BT Drainage Ltd | Northampton | 2025 |
| BTC Cess and Drainage Services Ltd | Godalming | 2025 |
| BTL Waste Management Limited | London | 2019 |
| BTS Drainage & Utilities Ltd | Newry | 2026 |
| Bubbles and Bins Ltd | St Austell | 2024 |
| Bubs Bogs Ltd | Birmingham | 2025 |
| Buchanan Skip Hire Ltd. | Livingston | 2002 |
| Buchley Ecocentre Limited | Lanarkshire | 2007 |
| Bucket List Holdings Limited | Waterlooville | 2004 |
| Buckley Farming Services Limited | Huddersfield | 2012 |
| Bucks Cleaning Services Limited | Milton Keynes | 2007 |
| Bucks Recycling Limited | Aylesbury | 1997 |
| Bucks Treatment Services Ltd | Tring | 2018 |
| Bucks Waste Removal Solutions Ltd. | London | 2026 |
| Buddie's Waste Limited | Sudbury | 2026 |
| Budget Skip Hire Preston Ltd | Preston | 2025 |
| Budget Skips and Recycling Limited | Borehamwood | 2017 |
| Budget Skips Direct Ltd | Bedford | 2011 |
| Budgetbargainz Limited | Birmingham | 2018 |
| Buftons Recyling Limited | Blackwood | 2025 |
| Build & Maintenance Limited | Shepperton | 2020 |
| Build IT (a & C) Ltd | London | 2016 |
| Builders Skips Ltd | Birmingham | 2017 |
| Buildersbin Limited | Bedford | 2019 |
| Buildesign Group Ltd | London | 2018 |
| Buildview 3D Limited | Aberdeen | 2025 |
| Built Environment Consultancy Ltd | Barnoldswick | 2016 |
| Built London Waste Removal Ltd | London | 2025 |
| Bulk Recycling (Scotland) Ltd | Ayr | 2015 |
| Bulk Ltd | Sheffield | 2011 |
| Bulk Metals Limited | Penistone | 2009 |
| Bulk Transfer Ltd | Rickmansworth | 2006 |
| Bulk Waste Ltd | Sheffield | 2011 |
| Bulk Waste Management Limited | Sheffield | 2011 |
| Bulk Water Deliverys Ltd | Cardiff | 2020 |
| Bulk Water Tankers Ltd | Basingstoke | 2020 |
| Bulkres Group Limited | London | 2017 |
| Bulky Bob's | Liverpool | 2016 |
| Bulkys West Lothian Ltd | Bathgate | 2025 |
| Bull Tankers Ltd | Stokesley | 2019 |
| Bulldog Waste and Services Ltd | Ivybridge | 2025 |
| Bullfield Ltd | 72 Gartside Street | 2001 |
| Bullion Investments & Acquisitions Limited | Poulton-Le-Fylde | 2009 |
| Bullion Tech Ltd | Birkenhead | 2014 |
| Bullseye Cleaning Services Ltd | Coventry | 2015 |
| Bulman's Removals & Storage Ltd | Taunton | 2019 |
| Buma Engineering Company Limited | Newcastle Upon Tyne | 1941 |
| Bunnyhill Pet Crematorium Ltd | Loughborough | 2025 |
| Bunraku Limited | London | 2025 |
| Burgess Metal Recycling Ltd | Wiggenhall St Germans | 2025 |
| Burney Waste Ltd | Manchester | 2024 |
| Burnham Waste Limited | Highbridge | 1997 |
| Burnley Plasterboard & Gypsum Recycling Ltd | Nelson | 2018 |
| Burnley Skip Hire Ltd | Burnley | 2019 |
| Burns Waste Management Ltd | North Shields | 2024 |
| Burnside Energy Ltd | Preston | 2020 |
| Burrows Trading Ltd | Dungannon | 2012 |
| Burton Environmental Services Limited | Matlock | 2005 |
| Burton Farm Barns Management Limited | Langport | 2005 |
| Burton Recycling Limited | Staffordshire | 2007 |
| Burton Skip Hire Limited | Burton Upon Trent | 1999 |
| Burton-Rose Developments Ltd | Epping | 2019 |
| Bury Drains Limited | Cheadle | 2016 |
| Bury Skip Hire Ltd | Bury | 2020 |
| Bury Skip Hire NW Limited | Manchester Road | 2011 |
| Bury Waste Company Limited | Tiverton | 2019 |
| Bushbury Skip Hire Ltd | Wolverhampton | 2022 |
| Bushfield Recycling Ltd | Purley | 2024 |
| Bushtec Limited | Ashton-Under-Lyne | 2021 |
| Business Recycling Group Ltd | Cardiff | 2023 |
| Business Waste Recycling Ltd | Bristol | 2016 |
| Business Waste Services Ltd | Manchester | 2025 |
| Business Waste Solutions Ltd | Norwich | 2022 |