| Bay MOT Centre Limited | Wholesale & retail | 2006 |
| Bay Orthopaedics Ltd | Health & social care | 2016 |
| Bay Recovery and Transportation Ltd | Transport & logistics | 2026 |
| Bay Retail Group Limited | Wholesale & retail | 2020 |
| Bay Ultrasound Limited | Health & social care | 2016 |
| Bay View Blinds Ltd | Other services | 2026 |
| Bay Windscreens Ltd | Wholesale & retail | 2023 |
| Bayfit Ltd | Arts & recreation | 2015 |
| Bayt M S Limited | Other services | 2020 |
| Baywindowsnw Limited | Construction | 2024 |
| BB Commerce Ltd | Wholesale & retail | 2026 |
| BB Woolwich Limited | Arts & recreation | 2025 |
| Bbuyuk.Com Ltd | Wholesale & retail | 2026 |
| BCD Demolition Ltd | Construction | 2022 |
| BCS (North West) Limited | Professional & scientific | 1986 |
| Bdbp Limited | Wholesale & retail | 2006 |
| Bdel Marketing Ltd | Professional & scientific | 2026 |
| BE Kind Beauty Limited | Wholesale & retail | 2017 |
| Be-Creative Ltd | Wholesale & retail | 2017 |
| BE: Child-Led Inclusion Limited | Education | 2022 |
| BE: for Inclusion CIC | Education | 2024 |
| Beacon of Love Community Interest Company | Education | 2026 |
| Bear AG Ltd | Information & communication | 2022 |
| Bear's Doggy Day Care Ltd | Other services | 2019 |
| Beaumont Ellis Consultancy Limited | Professional & scientific | 2024 |
| BEE Adventures CIC | Arts & recreation | 2022 |
| BEE Smart Holdings Limited | Real estate | 2025 |
| BEE Smart Property Limited | Professional & scientific | 2020 |
| BEE Travel Ltd | Extraterritorial | 2020 |
| Beechfield Limited | Construction | 2005 |
| Beechwood MC Ltd | Households | 2020 |
| Beechwood NW Trading Limited | Real estate | 2020 |
| Beexpeditions Ltd | Extraterritorial | 2022 |
| Being Essential UK Ltd | Education | 2026 |
| Bell Fire Protection Limited | Construction | 2022 |
| Bells Wood Holdings Limited | Extraterritorial | 2017 |
| Bells Wood Park Limited | Hospitality | 2023 |
| BEN Barry Automotive Journalist Limited | Arts & recreation | 2014 |
| BEN Jurin Architecture & Developments Ltd | Construction | 2021 |
| BEN Jurin Architecture Ltd | Professional & scientific | 2011 |
| BEN Tenuto Ltd | Hospitality | 2019 |
| Benchmark Developments Ltd | Construction | 2014 |
| Benn Construction Limited | Construction | 2001 |
| Bennington Enterprises Ltd | Wholesale & retail | 2020 |
| Bentham Community Centre C.I.C. | Health & social care | 2022 |
| Bentham Geoconsulting Limited | Professional & scientific | 2003 |
| Bentham Physiotherapy Clinic Limited | Health & social care | 2003 |
| Bespoke Bathrooms by CRW Ltd | Wholesale & retail | 2021 |
| Bespoke Interiors by CRW Limited | Construction | 2025 |
| Best Girl Productions Ltd | Arts & recreation | 2025 |
| Best Wishes (Cards & Gifts) Ltd | Wholesale & retail | 2002 |
| Better Cycling Ltd | Arts & recreation | 2014 |
| Better Fire Doors Ltd | Construction | 2015 |
| Beyond Vision Ltd | Professional & scientific | 2022 |
| Beyond-Co Ltd | Professional & scientific | 2021 |
| Beyoo Cosmetics Ltd | Health & social care | 2023 |
| Beyoo Limited | Health & social care | 2020 |
| Beyoo Properties Limited | Extraterritorial | 2023 |
| BF Wealth Management Ltd | Financial services | 2022 |
| BG Tips Limited | Professional & scientific | 2022 |
| Bhpt Limited | Extraterritorial | 2024 |
| Big Deep Ltd | Information & communication | 2017 |
| Big Time Events and Entertainment Ltd | Arts & recreation | 2018 |
| BIK Commercial Limited | Professional & scientific | 2025 |
| Billy Smith Garage Services Ltd | Wholesale & retail | 2019 |
| Bina Film Limited | Information & communication | 2020 |
| Binaat and Co Limited | Hospitality | 2025 |
| Binary Star Films Limited | Information & communication | 2017 |
| Bingley Consultancy Limited | Professional & scientific | 2011 |
| BIO AGE UK Limited | Health & social care | 2024 |
| BIO Feed Limited | Manufacturing | 2020 |
| Biome Restoration Ltd | Professional & scientific | 2013 |
| Birkdale Park Properties Limited | Real estate | 2025 |
| Birks & Willow Limited | Wholesale & retail | 2026 |
| Bizergyanov Ltd | Transport & logistics | 2014 |
| BJA (DFG) Ltd | Professional & scientific | 2024 |
| Black Dog Motors North West Ltd | Wholesale & retail | 2025 |
| Black Iris Ltd | Health & social care | 2023 |
| Black Poplar Trading Ltd | Agriculture & fishing | 2021 |
| Blackhurst Swainson Goodier LLP | | 2009 |
| Blackridge Technology Group Limited | Information & communication | 2026 |
| Blemkleen (North West) Limited | Manufacturing | 1984 |
| Blinged-Out.Com Ltd | Professional & scientific | 2017 |
| Blockspree Limited | Professional & scientific | 2020 |
| Bloomfeild Ltd | Construction | 2020 |
| Blossom Bird Limited | Hospitality | 2025 |
| Blossom Tree Camping Ltd | Hospitality | 2025 |
| Blossom Trees Nursery Limited | Education | 2009 |
| BLS Group NW Ltd | Financial services | 2021 |
| Bltn Eats Ltd | Information & communication | 2024 |
| Blue Box Property Ltd | Real estate | 2023 |
| Blue Line Logistics Northern Ltd | Transport & logistics | 2019 |
| Blue PV Limited | Construction | 2023 |
| Blue Rose Management Services Ltd | Other services | 2021 |
| Blue Wolf Adventure Limited | Administrative & support | 2016 |
| Blue Wolf Automobiles Limited | Wholesale & retail | 2021 |
| Blue Wolf Financial Limited | Professional & scientific | 2016 |
| Blue Wolf Holdings Limited | Financial services | 2016 |
| BLY Property Limited | Real estate | 2024 |
| Boak Mechanical Services Ltd | Construction | 2017 |