| Barralie Limited | Real estate | 2014 |
| Barrow PMO Solutions Limited | Administrative & support | 2013 |
| Barry Lewis Investments Limited | Financial services | 2014 |
| Barry Lewis Limited | Professional & scientific | 2010 |
| Barton's Convenience Stores Limited | Wholesale & retail | 2006 |
| Bauphasen Ltd | Construction | 2003 |
| Bayleyweir Associates Limited | Construction | 2009 |
| Baylis Business Support Ltd | Administrative & support | 2021 |
| BBQ Cavern Ltd | Wholesale & retail | 2022 |
| BC6 Ltd | Real estate | 2022 |
| BE Helpful Home Care Services Ltd | Health & social care | 2021 |
| Bear and Bean Co Ltd | Hospitality | 2026 |
| Bear Town Car Wash Limited | Administrative & support | 2025 |
| Bear Town Hand Car Wash Ltd | Other services | 2025 |
| Beardmore Motors Limited | Wholesale & retail | 2024 |
| Bearings & Drives Holdings Limited | Financial services | 2026 |
| Bearings & Drives Limited | Wholesale & retail | 1998 |
| Bearton Risk Solutions Ltd | Professional & scientific | 2020 |
| Beartown 1 Limited | Hospitality | 2009 |
| Beartown Barbers Ltd | Other services | 2026 |
| Beartown Brewery Limited | Manufacturing | 2013 |
| Beartown Brewhouse Ltd | Hospitality | 2018 |
| Beartown Coffee Company Ltd | Wholesale & retail | 2026 |
| Beartown Hospitality Ltd | Hospitality | 2026 |
| Beartown Tyres Ltd | Wholesale & retail | 2015 |
| Bearwood Ltd | Professional & scientific | 2016 |
| Beauty Couture Therapy Ltd | Other services | 2012 |
| Beckenham Engineering Group EOT Limited | Financial services | 2025 |
| Beckenham Engineering Group Limited | Professional & scientific | 2013 |
| Becky Sherrington Speech Language and Communication Therapy Limited | Health & social care | 2025 |
| Bednall Limited | Professional & scientific | 2011 |
| Beech Motor Company Ltd | Wholesale & retail | 2012 |
| Beelivery International Ltd | Information & communication | 2024 |
| Beeverman Limited | Professional & scientific | 2011 |
| Beeyou Support Hive Community Interest Company | Health & social care | 2024 |
| Beijing City Limited | Hospitality | 2023 |
| Belfield & Taylor Brickwork Ltd | Construction | 2019 |
| Bell Events Venue Finding Agency Limited | Administrative & support | 2017 |
| BEN Rowe Ltd | Transport & logistics | 2015 |
| Benissa Property Limited | Real estate | 2009 |
| Benitachell Property Limited | Professional & scientific | 2009 |
| Benny Browne & Co Limited | Wholesale & retail | 2004 |
| Bentley of Cheshire Ltd | Wholesale & retail | 2024 |
| Bentora Limited | Professional & scientific | 2016 |
| Berisfords Limited | Manufacturing | 1992 |
| Bermon Limited | Professional & scientific | 2012 |
| Bertime Limited | Professional & scientific | 2011 |
| Betahav Limited | Professional & scientific | 2015 |
| BEX Travel Ltd | Administrative & support | 2024 |
| BFD Property Investments Limited | Real estate | 2025 |
| Biddle Leisure Limited | Arts & recreation | 2002 |
| Big Decks Ltd | Administrative & support | 2018 |
| Big Impact Events Ltd | Hospitality | 2020 |
| Big Mooli Ltd | Information & communication | 2026 |
| Big Sports Ltd | Arts & recreation | 2022 |
| Big YUM BAO Limited | Hospitality | 2024 |
| Bike Lane Limited | Wholesale & retail | 2025 |
| Bill and BEN Skip Hire Ltd | Water & waste | 2012 |
| Binder Fastener Systems (U.K.) Limited | Wholesale & retail | 1991 |
| Bio-Infusions UK Ltd | Other services | 2021 |
| Bionic Gloves Technology Europe Limited | Wholesale & retail | 2008 |
| BK Scaffolding Congleton Limited | Construction | 2020 |
| Bl&C Services Limited | Professional & scientific | 2013 |
| Black Dog Education Limited | Professional & scientific | 2013 |
| Black Dog Sound Limited | Other services | 2014 |
| Black Firs Consultancy Limited | Professional & scientific | 2022 |
| Black LAB Group Ltd | Construction | 2019 |
| Blade Machinery Limited | Wholesale & retail | 2013 |
| Blake & Co Investments Limited | Real estate | 2026 |
| Blanco Property Limited | Professional & scientific | 2009 |
| BLM Leasing Ltd | Wholesale & retail | 2019 |
| Blue Cloud (Northwest) Limited | Construction | 2011 |
| Blue EGG Ltd | Information & communication | 2005 |
| Blue Horizon Media Limited | Information & communication | 2025 |
| Blue Hornet Properties Limited | Real estate | 2018 |
| Blue Raccoon Limited | Information & communication | 2014 |
| Blue Rock Property (Staffs) Limited | Real estate | 2024 |
| Blue Sky Cleaning Solutions Ltd | Administrative & support | 2017 |
| Blue Stars Services Limited | Hospitality | 2019 |
| Blue White Brown Limited | Professional & scientific | 2004 |
| Bluebell Property Ventures Limited | Real estate | 2026 |
| Blueberry Partners Limited | Manufacturing | 2010 |
| Blueberrywizard Limited | Real estate | 2024 |
| Blueroc Limited | Other services | 2004 |
| Blum Healthcare Ltd | Administrative & support | 2022 |
| BM Fulfilment Ltd | Transport & logistics | 2024 |
| BNG Habitat Banks Limited | Real estate | 2022 |
| BNG Habitat Limited | Real estate | 2022 |
| BNG Maintenance Limited | Real estate | 2022 |
| Boalloy Industries Limited | Wholesale & retail | 2006 |
| Bodhi Vruksh Limited | Manufacturing | 2020 |
| Bojangles Congleton Limited | Hospitality | 2018 |
| Bookey Clothing Limited | Wholesale & retail | 2016 |
| Booth's Tyre and Auto Services Limited | Wholesale & retail | 2017 |
| Bootique Services Ltd | Administrative & support | 2016 |
| Born to BE Crowned Ltd | Administrative & support | 2026 |
| Borrby Ltd | Real estate | 2024 |
| Bostock's Coaches Limited | Transport & logistics | 1997 |
| Bounce Productions Limited | Extraterritorial | 2010 |
| Boundary Farm Developments Ltd | Construction | 2016 |