| Billing Electrical Services and Testing Limited | Construction | 2023 |
| Bilton Property Company Limited | Construction | 1987 |
| Bingswood Gardens Ltd | Wholesale & retail | 2025 |
| Biomimetica Ltd | Administrative & support | 2016 |
| Bioworld Holdings Limited | Financial services | 2025 |
| Birch Estates Limited | Real estate | 1937 |
| Birch Garden Buildings Limited | Real estate | 2021 |
| Birch Garden Centre Limited | Other services | 2022 |
| Birchwood Gardens TMC Limited | Households | 2024 |
| Birchwood TMC Limited | Households | 2024 |
| Birdhall Lane Service Station Limited | Wholesale & retail | 2020 |
| Birds Food Ltd | Hospitality | 2021 |
| Birklea Service Flats Limited | Households | 1981 |
| Birthday Bouncers Gatley Limited | Arts & recreation | 2012 |
| Birtles Limited | Health & social care | 2024 |
| BJ Gym Limited | Arts & recreation | 2005 |
| BJS Optical Ltd | Wholesale & retail | 2022 |
| BK Electricity Limited | Manufacturing | 2020 |
| BK Sanneh Ltd | Wholesale & retail | 2024 |
| BKF Care & Repair Ltd | Wholesale & retail | 2011 |
| Black Belt Decorator Ltd | Construction | 2025 |
| Blackbird Packaging Limited | Administrative & support | 2022 |
| Blackcloud Network Services Ltd | Information & communication | 2009 |
| Blackfleet Media Group Limited | Professional & scientific | 2023 |
| Blackrock Medical Reporting Ltd | Administrative & support | 2015 |
| Blackstone Financial Management Limited | Financial services | 2014 |
| Blacktooth Limited | Financial services | 2024 |
| Blackwood Investment Group Ltd | Financial services | 2019 |
| Blake Landscapes Ltd | Administrative & support | 2022 |
| Blakeford Recruitment Limited | Administrative & support | 2023 |
| Blank Seams Limited | Wholesale & retail | 2021 |
| Blazing Stars Education Limited | Education | 2021 |
| Blazing Stars Holdings Limited | Professional & scientific | 2024 |
| Blemain Finance Limited | Financial services | 1974 |
| Blend Bar. Ltd | Wholesale & retail | 2024 |
| Bletchers (Manchester) Limited | Professional & scientific | 1964 |
| BLI Properties Ltd | Real estate | 2023 |
| Blink Lashes UK Ltd | Other services | 2020 |
| Blkpastmaple Ltd | Information & communication | 2025 |
| Blonde Property Limited | Real estate | 2020 |
| Bloom Consultancy Ltd | Professional & scientific | 2025 |
| Bloomie Official Ltd | Wholesale & retail | 2026 |
| Bloomsbury Trading Ltd | Financial services | 2025 |
| Bloor`S Construction & Plant Limited | Construction | 2005 |
| Blossoms Farm House Ltd | Real estate | 2024 |
| Blossoms Stables Ltd | Real estate | 2024 |
| BLU Luna Ltd | Hospitality | 2023 |
| Blue Catering Limited | Real estate | 2021 |
| Blue Chilli Leasing Limited | Extraterritorial | 2012 |
| Blue Chip Interactive Limited | Arts & recreation | 1997 |
| Blue Meadow Residents Association Limited | Households | 1981 |
| Blue Moon Farms Ltd | Energy | 2013 |
| Blue Silver .VIP Limited | Hospitality | 2020 |
| Blue Sky Property and Portfolio Developments Limited | Other services | 2021 |
| Blue Vanilla Limited | Arts & recreation | 2025 |
| Blueprint Management Limited | Professional & scientific | 2024 |
| BLUESEA1 Ltd | Administrative & support | 2023 |
| Bluestar MN Limited | Real estate | 2009 |
| Blumor 2 Limited | Real estate | 2025 |
| Blumor Consultants Limited | Professional & scientific | 2021 |
| Blumor Properties Limited | Real estate | 2016 |
| Blush Clothing Manchester Limited | Wholesale & retail | 2025 |
| Bluvista Ltd | Professional & scientific | 2021 |
| Blythe Contractors & Fencing Limited | Manufacturing | 1972 |
| Blythe IT Test Limited | Professional & scientific | 2013 |
| BMB Advisory Ltd | Professional & scientific | 2020 |
| BMB Investments Ltd | Financial services | 2020 |
| Bmcc RTM Company Ltd | Households | 2026 |
| Bmindful Psychology Limited | Health & social care | 2021 |
| BMS Rental Limited | Hospitality | 2024 |
| BMS Software Solutions (Northern) Limited | Information & communication | 2014 |
| Bn&As Ltd | Construction | 2023 |
| Boba Five Limited | Hospitality | 2022 |
| Boba Four Limited | Hospitality | 2022 |
| Boba Holdings Limited | Financial services | 2021 |
| Boba One Limited | Hospitality | 2021 |
| Boba Three Limited | Hospitality | 2021 |
| Boba Two Limited | Hospitality | 2021 |
| BOBAJOB24 Ltd | Administrative & support | 2024 |
| Bobby 88 Ltd | Wholesale & retail | 2025 |
| Body Balance Healthcare Limited | Other services | 2017 |
| Bohemian Heroes Limited | Manufacturing | 2025 |
| Boilertec Hire Holdings Ltd | Financial services | 2022 |
| Boilertec Hire Limited | Manufacturing | 2007 |
| Bollin Court (Wilmslow) Limited | Households | 1969 |
| Bollin House 1 Limited | Professional & scientific | 2017 |
| Bollin House 2 Limited | Professional & scientific | 2017 |
| Bolshaw Farm Management Company Limited | Real estate | 2009 |
| Bolshevik Ltd | Wholesale & retail | 2012 |
| Bolt 365 Ltd | Transport & logistics | 2026 |
| Bonzo Finance Limited | Extraterritorial | 2025 |
| Bookpalm Limited | Real estate | 1982 |
| Booksyria Ltd | Hospitality | 2025 |
| Boreas Services Limited | Construction | 2022 |
| Borrowdale Estates Ltd | Real estate | 2019 |
| Botanic Wellness (UK) Limited | Wholesale & retail | 2020 |
| Bottom Line Corporate Services Limited | Administrative & support | 2005 |
| Bouchell Property Limited | Real estate | 2023 |
| Boulevard Fish and Chip Shop Ltd | Hospitality | 2021 |
| Boundary Properties Limited | Real estate | 2001 |