| Blackstone Bhaji Limited | Hospitality | 2026 |
| Blackstone Solutions NW Ltd | Administrative & support | 2023 |
| Blacktern Transportation and Logistics Ltd | Transport & logistics | 2025 |
| Blake Performance Fabrics Limited | Extraterritorial | 1951 |
| Blanka Trading Ltd | Wholesale & retail | 2012 |
| Blessed Couriers Limited | Transport & logistics | 2017 |
| Blinds in (North West) Limited | Manufacturing | 2020 |
| Blinds Inn (North West) Ltd | Manufacturing | 2021 |
| Blinds Inn Limited | Manufacturing | 2014 |
| Blinkstudioco Ltd | Professional & scientific | 2026 |
| Bliskcam Ltd | Professional & scientific | 2025 |
| Bliss Flights Ltd | Administrative & support | 2022 |
| Bliss Moves Ltd | Administrative & support | 2018 |
| Bliss N Blossom Ltd | Manufacturing | 2025 |
| Blisscorner Ltd | Wholesale & retail | 2023 |
| Bloc 80 Ltd | Manufacturing | 2026 |
| Blonda Network Ltd | Administrative & support | 2023 |
| Blonde Star Limited | Information & communication | 2008 |
| Bloom Photography Limited | Professional & scientific | 2022 |
| Bloom&Zoom Ltd | Wholesale & retail | 2025 |
| Bloombizgrowth Ltd | Professional & scientific | 2026 |
| Blossom (NW) Limited | Other services | 2019 |
| Blossom in NW C.I.C. | Health & social care | 2017 |
| Blossomcare NW Limited | Health & social care | 2021 |
| BLU Sky Digital Ltd | Professional & scientific | 2025 |
| BLU Sky Holdings Ltd | Financial services | 2025 |
| Blue Bell MOT & Service Centre Limited | Wholesale & retail | 2012 |
| Blue Box Home Deliveries Limited | Administrative & support | 2013 |
| Blue Box Management Ltd | Real estate | 2013 |
| Blue Diamond Restaurant Rochdale Ltd | Hospitality | 2014 |
| Blue Nile Stockport Ltd | Hospitality | 2024 |
| Blue PIT Mill Ltd. | Construction | 2025 |
| Blue PIT Mill Storage Limited | Real estate | 2007 |
| Blue Pits Housing Action | Hospitality | 2011 |
| Blue Star Plant Ltd | Wholesale & retail | 2016 |
| Bluearrow Connect Ltd | Transport & logistics | 2026 |
| Bluebell Children's Care Ltd | Public administration | 2022 |
| Bluebird Minibus Hire Ltd | Transport & logistics | 2026 |
| Blueburn Ltd | Real estate | 2013 |
| Blueclay Limited | Professional & scientific | 2015 |
| Blueclay Properties Limited | Real estate | 2025 |
| Blueline Delivery Ltd | Transport & logistics | 2026 |
| Blueoak Ventures Ltd | Wholesale & retail | 2025 |
| Bluestone Contracts UK Ltd | Construction | 2025 |
| BM Holdco Limited | Real estate | 2023 |
| BM Securities Limited | Administrative & support | 2022 |
| BMF Cleaning Services Ltd | Administrative & support | 2023 |
| Bnbcare Ltd | Administrative & support | 2025 |
| Boardr Limited | Professional & scientific | 2020 |
| Boatman Furniture Limited | Manufacturing | 2025 |
| BOB Engineering Limited | Manufacturing | 2022 |
| BOB Instruments Ltd | Manufacturing | 2026 |
| Bob's Skip Hire Limited | Administrative & support | 1994 |
| Boba Bakes Limited | Hospitality | 2025 |
| Bobauk Supplies Ltd | Wholesale & retail | 2024 |
| Bobs Biltong Ltd | Wholesale & retail | 2022 |
| Body Cakes Limited | Wholesale & retail | 2025 |
| Bodymatters II Limited | Arts & recreation | 2001 |
| Bodytherapy UK Ltd | Health & social care | 2006 |
| Bodyworks (Rochdale) Ltd | Wholesale & retail | 2017 |
| Boilerbros Ltd | Construction | 2024 |
| Bolton Spares & Repairs Ltd | Administrative & support | 2011 |
| BON Shonet Limited | Information & communication | 2007 |
| Bonkers Bargains Online Limited | Wholesale & retail | 2023 |
| Boom Prime UK Limited | Wholesale & retail | 2012 |
| Boom Pro Inc Ltd | Wholesale & retail | 2024 |
| Booth Air Conditioning (Service) Ltd | Manufacturing | 2008 |
| Booze N Basics Ltd | Wholesale & retail | 2023 |
| Boro Holdings Limited | Financial services | 2024 |
| Boro Trans Limited | Transport & logistics | 2015 |
| Bottomley's Print Services Ltd | Manufacturing | 2021 |
| Boutique Balloons Ltd | Wholesale & retail | 2024 |
| Bouwen Services Design Ltd | Professional & scientific | 2021 |
| Bowen Walters Independent Surveyors Ltd | Construction | 2026 |
| Bower Car & Commercial Ltd | Wholesale & retail | 2019 |
| Bowley Equestrian Ltd | Agriculture & fishing | 2025 |
| Bows R US (UK) Ltd | Wholesale & retail | 2015 |
| BOX2BOX Bar Ltd | Hospitality | 2023 |
| Boxing Coaching Consultant Ltd | Education | 2026 |
| BPC Electrical Ltd | Construction | 2017 |
| BPO Law Limited | Extraterritorial | 2024 |
| BR Electrical Ltd | Construction | 2016 |
| BR Trinity Homes Ltd | Real estate | 2025 |
| Bradley Fold Estates Limited | Real estate | 1992 |
| Bradley Fold Travel Limited | Transport & logistics | 2003 |
| Braille Signs UK Ltd | Manufacturing | 2023 |
| Brake Caliper Refurbishments Ltd | Wholesale & retail | 2024 |
| Bramhall Plumbing Services Limited | Administrative & support | 2012 |
| Bramm Trading Ltd | Wholesale & retail | 2025 |
| BRAMMER4U Ltd | Health & social care | 2019 |
| Brand for UK Limited | Wholesale & retail | 2025 |
| Brand Shack Ltd | Wholesale & retail | 2020 |
| Brandexa Ltd | Wholesale & retail | 2026 |
| Brandley Ltd | Professional & scientific | 2019 |
| Brandon Diamond CUT Alloys Ltd | Wholesale & retail | 2021 |
| Brands LAB Group Ltd | Wholesale & retail | 2021 |
| Branj 2 Limited | Other services | 2023 |
| Branj Limited | Real estate | 2018 |
| Brantwood Design & Build Limited | Construction | 2002 |
| Bravreya Hendalg Ltd | Financial services | 2026 |