| Beta Commercial Finance Limited | Professional & scientific | 2016 |
| Beta Consultants Limited | Professional & scientific | 2024 |
| Beta Property Management Limited | Real estate | 2014 |
| Betacare Agency Ltd | Administrative & support | 2013 |
| Beth Homes Organisation Limited | Health & social care | 2019 |
| Beth R L Rigby Ltd | Hospitality | 2023 |
| Bethada Consulting Limited | Professional & scientific | 2026 |
| Bethany Transports and Logistics Ltd | Transport & logistics | 2023 |
| Betheden Ltd | Real estate | 2025 |
| Bethel Frank Partnership Ltd | Hospitality | 2024 |
| Betmar Limited | Transport & logistics | 2017 |
| Betom Limited | Other services | 2025 |
| Betsys (Stoke) Ltd | Hospitality | 2022 |
| Bettaelite UK Ltd | Extraterritorial | 2025 |
| Better Daily Ltd | Wholesale & retail | 2026 |
| Better Equipped Educational Supplies Ltd | Wholesale & retail | 2008 |
| Betterblock Developments Limited | Construction | 2026 |
| Betterblock Electrical Limited | Construction | 2026 |
| Betting Models Ltd | Information & communication | 2025 |
| Bewiseutilites Ltd | Energy | 2015 |
| Bexter Developments Limited | Real estate | 2002 |
| Beyond Reformer Pilates Ltd | Other services | 2026 |
| Beyondkare Ltd | Health & social care | 2024 |
| Beyouthful Cosmetics Ltd | Health & social care | 2018 |
| BF Aesthetics Ltd | Other services | 2026 |
| BFM Europe Holdings Limited | Professional & scientific | 2006 |
| BFM Fashions Enterprise Limited | Wholesale & retail | 2024 |
| BFM Staffs Holdings Limited | Financial services | 2022 |
| BGI Design & Print Limited | Manufacturing | 2025 |
| BGJ 1942 Ltd | Financial services | 2019 |
| Bgurung Ltd | Wholesale & retail | 2026 |
| BH Hairdressing Ltd | Other services | 2022 |
| Bhala Nexus Limited | Information & communication | 2026 |
| BHK Trading Ltd | Professional & scientific | 2024 |
| BIA Anto 2023 Ltd | Transport & logistics | 2023 |
| Bianca ABT Ltd | Transport & logistics | 2024 |
| Biasan Energy Ltd | Energy | 2021 |
| Bickerton Properties Ltd | Real estate | 2020 |
| Bicmp | Education | 2014 |
| BID Events Limited | Administrative & support | 2017 |
| Biddulph & Tunstall Chiropody Clinic Ltd | Health & social care | 2006 |
| Biddulph Balloon Centre Limited | Wholesale & retail | 2015 |
| Biddulph BED Warehouse Limited | Wholesale & retail | 2024 |
| Biddulph Exhaust & Tyre Limited | Administrative & support | 2002 |
| Biddulph Mobiles Limited | Wholesale & retail | 2025 |
| Biddulph Schools Partnership Trust | Education | 2012 |
| Biddulph Soaps Carwash Ltd | Wholesale & retail | 2025 |
| Bidprops Consulting Ltd | Professional & scientific | 2024 |
| Big B'Z Stoke Ltd | Hospitality | 2026 |
| Big Bear Buys Ltd | Other services | 2022 |
| Big Dive (UK) Ltd | Financial services | 2023 |
| Big Dog Competitions & Giveaways Ltd | Arts & recreation | 2026 |
| Big Healthcare Limited | Administrative & support | 2015 |
| Big John Transport Ltd | Transport & logistics | 2017 |
| Big on Assets Ltd | Real estate | 2019 |
| Big on Driver Training Ltd | Education | 2010 |
| Big on Logistics Ltd | Transport & logistics | 2019 |
| Big on Properties Ltd | Real estate | 2024 |
| Big on Transport Ltd | Transport & logistics | 2020 |
| Big Orange Solutions Ltd | Manufacturing | 2016 |
| Big Tomato Company Limited | Manufacturing | 2006 |
| BIG5IVE Ltd | Agriculture & fishing | 2025 |
| Bigbuk Limited | Hospitality | 2018 |
| Bigg Recruitment and HSE Advisor Ltd | Construction | 2021 |
| Bikerz Performance Products Ltd | Wholesale & retail | 2013 |
| Bikerz Racing Ltd | Wholesale & retail | 2025 |
| Bilaal's Dessert Bar Ltd | Hospitality | 2026 |
| Bilaal's Fast Food Limited | Hospitality | 2023 |
| Billington (Asset) Holdings Limited | Financial services | 2026 |
| Billington Property Acquisitions Limited | Real estate | 2026 |
| Billington Property Services and Management Consultancy Limited | Real estate | 2026 |
| Bilsborrow Convenience Limited | Wholesale & retail | 2022 |
| BIM Transport Ltd | Transport & logistics | 2015 |
| Biologicx Limited | Public administration | 2025 |
| Biow Exposomics UK Ltd | Extraterritorial | 2021 |
| Birch Green Investments Limited | Construction | 2023 |
| Birch Healthcare Services Ltd | Administrative & support | 2005 |
| Birchendale Limited | Information & communication | 2024 |
| Birchenwood Project Services Limited | Manufacturing | 2007 |
| Birches Head and Northwood CIC | Administrative & support | 2025 |
| Birches Head GET Growing CIC | Agriculture & fishing | 2023 |
| Birchtree Joinery Ltd | Construction | 2021 |
| Birchwood Cavendish Limited | Professional & scientific | 2017 |
| Birchwood Homes Construction & Development Limited | Construction | 2003 |
| Birks Finance Limited | Real estate | 1926 |
| Birmingham Boiler Services Ltd | Construction | 2021 |
| Birmingham Build Ltd | Construction | 2024 |
| Birmingham Glamping Ltd | Hospitality | 2025 |
| Birstone Holdings Limited | Professional & scientific | 2021 |
| Birton Valentin-Mihai Ltd | Manufacturing | 2016 |
| Birzo Ltd | Hospitality | 2022 |
| Bishop Education Consultancy Limited | Education | 2022 |
| Bishopwalk Limited | Construction | 1986 |
| Bisons Distributors Ltd | Wholesale & retail | 2024 |
| Bite and EAT Ltd | Information & communication | 2025 |
| Bitklean Ltd | Financial services | 2025 |
| Bitz (UK) Ltd | Wholesale & retail | 2011 |
| Bitzboost Ltd | Health & social care | 2025 |
| Bivol Ltd | Transport & logistics | 2024 |
| Bizloom Ltd | Wholesale & retail | 2021 |