| Best Recycling Ltd | Bournemouth | 2025 |
| Best-Flow Drainage Solutions Ltd | London | 2024 |
| Best-One Skip Limited | Liverpool | 2022 |
| Besttex Ltd | Belfast | 2020 |
| Bestway Recycling Ltd | South Croydon | 2023 |
| Beta Jetting Services Ltd | Burton-On-Trent | 2008 |
| Better Call Haul Limited | Johnstone | 2024 |
| Better Reuse Limited | Wendover | 2019 |
| Better Sparkle Ltd | Altrincham | 2013 |
| Betts Group Limited | Birmingham | 2019 |
| Beverley Water Treatment Limited | Hove | 2000 |
| Bevlyn Limited | Kingswinford | 1995 |
| Bewdley & Kidderminster Skip Hire Ltd | Stourbridge | 2018 |
| Bexley Metal Recycling Limited | Milton Keynes | 2020 |
| Bexley Recycling Ltd | Canterbury | 2018 |
| Bexley Skip Hire Ltd | Milton Keynes | 2018 |
| Bexley-M-R Limited | Bushey | 2026 |
| Beyclean Brands Ltd | London | 2015 |
| BF Recycling Ltd | Batley | 2023 |
| BFG Clearance Limited | Worthing | 2024 |
| BGD21 Ltd | Portsmouth | 2022 |
| BGM Norfolk Limited | Norwich | 2024 |
| BGP Realisations PLC | Leeds | 1938 |
| BH Recycling Limited | Beaconsfield | 2017 |
| BH Service Group Limited | London | 2024 |
| BH Tankering Ltd | Manchester | 2026 |
| BH2GROUP Limited | Enfield | 2023 |
| Bhader Waste Management Ltd | Oldbury | 2018 |
| BHB Drainage & Plumbing Ltd | Sevenoaks | 2022 |
| BHD Group Limited | | 2001 |
| BHD Showers Limited | | 1989 |
| BHL Woodworking Limited | London | 1973 |
| Bhoomichatra (UK) PVT Ltd | Ipswich | 2019 |
| Biaglen Limited | Leicester | 2022 |
| Bibby Hygiene Limited | Wigan | 2012 |
| Bicester Glass Collection Ltd | Bicester | 2024 |
| Bicycle Links CIC | Norwich | 2011 |
| Biddles Scrap Metal Ltd | Market Harborough | 2007 |
| Bidenvo Limited | Northampton | 2013 |
| Biel Bros Limited | London | 2016 |
| Bierlow Ltd | Grimsby | 2016 |
| Biffa (Corby) Limited | High Wycombe | 1996 |
| Biffa (WES) Limited | High Wycombe | 1992 |
| Biffa (West Sussex) Recycling Limited | High Wycombe | 2003 |
| Biffa Corporate Holdings Limited | High Wycombe | 2005 |
| Biffa Environmental Municipal Services Limited | High Wycombe | 1967 |
| Biffa GS (FC) Limited | High Wycombe | 2003 |
| Biffa GS (M&B) Limited | High Wycombe | 1974 |
| Biffa GS Environmental Limited | High Wycombe | 1997 |
| Biffa GS Holdings Limited | High Wycombe | 2002 |
| Biffa GS UK Holdings Limited | High Wycombe | 2003 |
| Biffa Holdings Limited | High Wycombe | 1971 |
| Biffa Landfill Solutions Limited | High Wycombe | 1978 |
| Biffa Leicester Limited | High Wycombe | 2002 |
| Biffa Municipal Limited | High Wycombe | 2001 |
| Biffa Treatment Services Limited | High Wycombe | 1989 |
| Biffa UK Group Limited | High Wycombe | 1998 |
| Biffa UK Limited | High Wycombe | 1998 |
| Biffa Waste Limited | High Wycombe | 2000 |
| Biffa Waste Management Limited | High Wycombe | 1973 |
| Biffa Waste Services Limited | High Wycombe | 1969 |
| Biffa West Sussex Limited | High Wycombe | 2008 |
| Big BAG Waste Ltd | London | 2025 |
| Big BIN Services Ltd | Hounslow | 2019 |
| Big Bins Skip Hire Ltd | Westerham | 2022 |
| Big Blue Computers Limited | Wirral | 2006 |
| Big Blue Plastics Limited | Wirral | 2006 |
| Big Blue Recycling Group Limited | Heswall | 2006 |
| Big Blue Recycling Limited | Wirral | 2006 |
| Big Blue Skip Hire Ltd | Ashton-Under-Lyne | 2025 |
| Big Daddy Rubbish Clearance Ltd | Cardiff | 2026 |
| Big Eco Bins Ltd | Maidstone | 2019 |
| Big Joes Sales Recovery’S LDT Ltd | Newry | 2026 |
| Big John Grab Service Ltd | Greenford | 2018 |
| Big Recycling Limited | Swanscombe | 2024 |
| Big Skip Bins Ltd | Port Talbot | 2023 |
| Big T’S Waste Recycling Solutions Limited | London | 2026 |
| Big Zoltan Logistics Ltd | Selby | 2022 |
| Big-Tnz UK Ltd | London | 2025 |
| Bikepartsfarm Ltd | Gateshead | 2025 |
| Bilfinger Salamis UK Limited | Aberdeen | 1973 |
| Bill and BEN Skip Hire Ltd | Congleton | 2012 |
| Bill Will Waste Management Limited | Swansea | 2015 |
| Billansa Waste Ltd | Nottingham | 2020 |
| Billy Bloom Ltd | Belfast | 2024 |
| Billy Bowie Special Projects Limited | Ayrshire | 1999 |
| BIM Merchants Ltd | Nottingham | 2021 |
| BIN & Gone Essex Limited | Holland-On-Sea | 2025 |
| BIN & Gone Ltd | Ascot | 2024 |
| BIN 'N' Gone Waste Clearance Limited | Romsey | 2018 |
| BIN and Collected Recycling Ltd | Ashton-Under-Lyne | 2020 |
| BIN B Gone Limited | Chester | 2025 |
| BIN Blast Ltd | Ruislip, | 2025 |
| BIN Buddies Ltd | Seahouses | 2024 |
| BIN Buddy Ltd | London | 2025 |
| BIN Busters Waste Removals Ltd | Lincoln | 2025 |
| BIN IT to WIN IT Ltd | Corby | 2026 |
| BIN MAN Limited | London | 2022 |
| BIN N Gone Limited | Stanmore | 2012 |
| BIN N Gone Scotland Ltd | Forfar | 2025 |