| Brickkiln Civil Engineering Contractors Limited | Derry | 1991 |
| Brickkiln Skip Hire Ltd | Derry | 2015 |
| Brickkiln Waste Limited | Belfast | 2000 |
| Brickwork Residents Association RTM Company Limited | Cambridgeshire | 2005 |
| Brida Solutions Limited | Glasgow | 2022 |
| Bridge Recycling Limited | Bridgwater | 2025 |
| Bridge Waste Disposal Limited | Derby | 2004 |
| Bridge Works CWB Ltd | Port Glasgow | 2025 |
| Bridgelinkservices Ltd | London | 2025 |
| Bridgemarts Limited | London | 1988 |
| Bridgewood Recycling Ltd | Kettering | 2024 |
| Bridgnorth Septic Tanks (Shropshire) Ltd | Bridgnorth | 2023 |
| Bridgwater Plant and Recycling Services Ltd | Birmingham | 2019 |
| Bridgwater Recycling Limited | Bristol | 2025 |
| Bridmin Limited | Sutton Coldfield | 1993 |
| Briery Meadow Treatment Plant Company Limited | Cockermouth | 2021 |
| Briggs Environmental Services Limited | Burntisland | 1988 |
| Briggs Metals Limited | Newark | 2006 |
| Bright Green Environmental Solutions Limited | Edinburgh | 2017 |
| Bright Innovations Group Ltd | Chester | 2018 |
| Bright Red Home Maintenance Ltd | Dunfermline | 2019 |
| Brighthands Services Ltd | Wembley | 2025 |
| Brighton & Hove 4DELIVERY Limited | London | 2008 |
| Brighton & Hove Wood Recycling Project | Brighton | 1998 |
| Brighton and Hove Clearance Ltd | Brighton | 2020 |
| Brighton Rubbish Solutions Limited | Brighton | 2017 |
| Brighton Waste & Recycling Limited | Brighton | 2023 |
| Brighton Waste Removal Ltd | London | 2025 |
| Brightside Haulage Ltd | Greenford | 2020 |
| Brightwaste Ltd | Musselburgh | 2017 |
| Brightwater Technology Limited | Harleston | 2014 |
| Briliant Services 93 Ltd | Ilford | 2021 |
| Brimor Environmental Services Ltd | Aberdare | 2025 |
| Brish Group Limited | Harlow | 2026 |
| Brish Wood Recycling Ltd | Harlow | 2023 |
| Brisons Stainless Limited | Brierley Hill | 1978 |
| Bristol & Bath Services Ltd | Bristol | 2018 |
| Bristol Asbestos Limited | Hotwells | 2019 |
| Bristol Clear Ltd | Bristol | 2022 |
| Bristol Environmental Services Ltd. | Bristol | 1991 |
| Bristol Express Rubbish Clearance Ltd | Bristol | 2023 |
| Bristol Junk Limited | Warmley | 2025 |
| Bristol R C Limited | Bristol | 2016 |
| Bristol Recycling Limited | Bristol | 2022 |
| Bristol Waste Centre Ltd | Bristol | 2019 |
| Bristol Waste Clearance Limited | Bristol | 2007 |
| Bristol Waste Company Limited | Bristol | 2015 |
| Bristol Water PLC | Bristol | 1991 |
| Britaniacrest Recycling Limited | Horley | 1993 |
| Britannia Housekeeping.Co.Uk Ltd | London | 2023 |
| Britannia Inspection Services Ltd | Bolton | 2020 |
| Britannia Skips Ltd | Dagenham | 2012 |
| Britannia Waste Ltd | London | 2025 |
| Brite GEM Cleaning Limited | Linlithgow | 2025 |
| Britewater Environmental (NI) Limited | Derry | 2020 |
| British Woodwares Limited | Thomas More Square | 1939 |
| Britreidi Limited | Cardiff | 2020 |
| Britt Construction Ltd | Tunbridge Wells | 2017 |
| Britteco Ltd | Banbury | 2017 |
| Britton Group Ltd | Orpington | 2020 |
| Brittons Waste Clearance Services Ltd | March | 2023 |
| BRK Recycling Ltd | Harrow | 2025 |
| BRL Southern Ltd | Portchester | 2019 |
| BRN Holdings Ltd | Camberley | 2017 |
| BRO Waste Management Ltd | Dunstable | 2024 |
| Bro's & Son's Skip Hire Ltd | Sutton Coldfield | 2020 |
| Broadband Recycling Limited | Telford | 2006 |
| Broadland Toilet Hire Ltd | Huntingdon | 2021 |
| Brockdam Utilities Management Company Ltd. | Alnwick | 2017 |
| Brodextrident Limited | Tamworth | 2010 |
| Brody Bassett Metals Limited | Hull | 2024 |
| Bromborough Plastics Limited | Deeside | 1995 |
| Bromborough Skip & Recycling Ltd | Bolton | 2020 |
| Bromborough Skips (NW) Ltd | Wallasey | 2023 |
| Bromley Maintenance Limited | Bromley | 2023 |
| Bromley Scrap Metals Recycling Limited | South Street | 2016 |
| Brongest Management Limited | Newcastle Emlyn | 2010 |
| Brook Band Limited | Tipton | 2020 |
| Brook Brothers (Yorkshire) Limited | Wakefield | 2019 |
| Brookes Regeneration Limited | Nantwich | 2020 |
| Brookmans Group Limited | Potters Bar | 2019 |
| Brookmarsh Furniture Limited | East Sussex | 1996 |
| Brookmine Limited | Manchester | 2021 |
| Brookrose Limited | Southampton | 2013 |
| Brooks Clearance Ltd | London | 2020 |
| Brooks Metals & Waste Limited | Crewe | 2002 |
| Brooks Waste Limited | Basildon | 2008 |
| Brookshaw Developments Limited | Manchester | 2010 |
| Broomhey Ltd | Wigan | 2023 |
| Brosters Environmental Limited | Wigan | 2015 |
| Brothers Drain Services Ltd | Benfleet | 2016 |
| Brothers Maintenance Services Ltd | Benfleet | 2023 |
| Brothers Removal Ltd | Dagenham | 2025 |
| Brough Skip Hire Ltd | Brough | 2021 |
| Broughton Astley Skip Hire Ltd | Lutterworth | 2010 |
| Brown Recycling Limited | Stoke-On-Trent | 1989 |
| Browns Reclamation Ltd | Wrexham | 2024 |
| Browns Recycling Group Limited | Llanelli | 2014 |
| Browns Tank Cleaning Limited | Bristol | 1988 |
| Browns Waste Limited | Grimsby | 2021 |