| BFS Holdings Ltd | Financial services | 2017 |
| BG Furnishings Ltd | Wholesale & retail | 2026 |
| BG Quantity Surveying Ltd | Professional & scientific | 2024 |
| BG Stores Bolton Limited | Wholesale & retail | 2019 |
| BG Traders Limited | Wholesale & retail | 2011 |
| Bgate Limited | Hospitality | 2026 |
| BGB Entrance & Access Solutions Ltd | Financial services | 2010 |
| BGB Perimeter Security Ltd | Other services | 2021 |
| BGC Holdings Limited | Financial services | 1999 |
| BGC Visitor Income Limited | Arts & recreation | 2020 |
| Bgdt Limited | Agriculture & fishing | 2008 |
| BGR Roofing and Waterproofing Limited | Construction | 2018 |
| BGS Pro Tuning Ltd | Wholesale & retail | 2024 |
| Bgxp Ltd | Information & communication | 2025 |
| BH Consultancy Services Limited | Information & communication | 2019 |
| BH Home Care Ltd | Health & social care | 2022 |
| BH Investments NW Ltd | Real estate | 2022 |
| BH Residential Care Home Limited | Health & social care | 2022 |
| BH Shineright Ltd | Administrative & support | 2025 |
| Bhad Rental Ltd | Real estate | 2023 |
| Bhad Rentcom Ltd | Real estate | 2025 |
| Bhadcomhold Ltd | Real estate | 2025 |
| Bhadoom Limited | Wholesale & retail | 2017 |
| Bhadreshold Ltd | Real estate | 2025 |
| Bhaiji Properties Ltd | Real estate | 2026 |
| Bharathi Investments Limited | Real estate | 2020 |
| Bhata Pharm Ltd | Wholesale & retail | 2021 |
| Bhatti Convenience Store Ltd | Wholesale & retail | 2019 |
| BHC Project Management Ltd | Professional & scientific | 2022 |
| BHD Foods Limited | Hospitality | 2025 |
| Bhghc Limited | Financial services | 2018 |
| BHM Transport Services Ltd | Transport & logistics | 2026 |
| Bhola Food and Caterers Ltd | Hospitality | 2023 |
| Bhos Ltd | Wholesale & retail | 2021 |
| BHW Print Group Limited | Professional & scientific | 2015 |
| Biad Construction Ltd | Construction | 2017 |
| Biad Ltd | Construction | 2017 |
| Bianca Raffaella Ltd | Arts & recreation | 2025 |
| BIB Aesthetics Limited | Other services | 2016 |
| BIB Ventures Ltd | Financial services | 2024 |
| Bibble Nibble Limited | Hospitality | 2023 |
| Bibby Logistics Limited | Extraterritorial | 2013 |
| Bibby Palletised Logistics Ltd. | Transport & logistics | 2012 |
| Bibbys Farm Limited | Arts & recreation | 2004 |
| Bibliometrica Limited | Professional & scientific | 2020 |
| Bicadel Ltd | Health & social care | 2015 |
| BID Factors Limited | Professional & scientific | 2018 |
| BID Retrofit Ltd | Professional & scientific | 2024 |
| Biddi Limited | Wholesale & retail | 2024 |
| Bidstar Ventures Ltd | Financial services | 2024 |
| Big BEN Tech Associates Ltd | Wholesale & retail | 2024 |
| Big BOY Blumbergs Ltd | Wholesale & retail | 2022 |
| Big Exposure Print Limited | Wholesale & retail | 2005 |
| Big G'S Health and Fitness Ltd | Arts & recreation | 2015 |
| Big Ladz Kitchen Limited | Hospitality | 2023 |
| Big Mamma Limited | Hospitality | 2016 |
| Big Properties Investment Limited | Real estate | 2022 |
| Big ROB Haulage Limited | Transport & logistics | 2020 |
| Big T'S Interior and Gardening Services Ltd | Construction | 2024 |
| Big T’S Property Transformation Services Ltd | Administrative & support | 2026 |
| Big Wash Ltd | Administrative & support | 2024 |
| Big Wolf Group Ltd | Administrative & support | 2019 |
| Bigbe Ltd | Wholesale & retail | 2026 |
| Bigdale Ltd | Wholesale & retail | 2024 |
| Bigg Pants Ltd | Professional & scientific | 2022 |
| Bigger Picture Entertainment Ltd | Arts & recreation | 2017 |
| Bigjacketjid Ltd | Professional & scientific | 2025 |
| Bijou Europe Ltd | Manufacturing | 2025 |
| Bijoucars Ltd | Transport & logistics | 2022 |
| Bikai Consulting Limited | Professional & scientific | 2013 |
| Bilal (Bolton) Ltd | Administrative & support | 2018 |
| Bilal Ahmad Traders Ltd | Wholesale & retail | 2025 |
| Bilatiis Ltd | Other services | 2025 |
| Bill & COO Ltd | Hospitality | 2020 |
| Bill Building & Constructions Ltd | Construction | 2014 |
| Billatoto Ltd | Wholesale & retail | 2026 |
| Billingtons Building Contractors Ltd | Construction | 2023 |
| Billion Air Edge Limited | Wholesale & retail | 2026 |
| Billtok Limited | Wholesale & retail | 2026 |
| Billvale Limited | Administrative & support | 2014 |
| Billy Anne Limited | Real estate | 2025 |
| Billy Bobs FBA Limited | Wholesale & retail | 2023 |
| Billys Tyres Ltd | Wholesale & retail | 2024 |
| Billyseth Ltd | Wholesale & retail | 2023 |
| Bilstein UK Ltd | Manufacturing | 2005 |
| Bimciti Limited | Wholesale & retail | 2025 |
| Bimserv Engineering Limited | Professional & scientific | 2024 |
| Bimserv Limited | Professional & scientific | 2017 |
| Binary Cloud Consulting Limited | Information & communication | 2017 |
| Binarybridge Trading Co. Ltd | Wholesale & retail | 2023 |
| BINBLASTERS2025 Ltd | Administrative & support | 2025 |
| Bindu Properties Ltd | Real estate | 2019 |
| BIO Farma Ltd | Manufacturing | 2010 |
| BIO Skin Tech Ltd | Wholesale & retail | 2024 |
| Biobug UK Ltd | Wholesale & retail | 2019 |
| Bioearths Pro Limited | Wholesale & retail | 2023 |
| Bioenhancer Systems Ltd | Information & communication | 2023 |
| Biomech Therapy & Performance Ltd | Arts & recreation | 2016 |
| Biorenew Ltd | Wholesale & retail | 2025 |
| Biorevibe Ltd | Wholesale & retail | 2025 |