| Based Bookkeeping Ltd | Professional & scientific | 2021 |
| Baslaw Consulting Services Ltd | Information & communication | 2013 |
| Bass Clusker Consulting Limited | Professional & scientific | 2002 |
| BAT Commercial Limited | Professional & scientific | 2019 |
| Bath Art Ltd | Wholesale & retail | 2015 |
| Battery Power Ltd | Construction | 2026 |
| Bauer Transport Ltd | Transport & logistics | 2016 |
| Bawi Holdings Limited | Financial services | 2022 |
| Baxhija Investment Properties Limited | Real estate | 2022 |
| Bayhouse Property Limited | Real estate | 2023 |
| Bayleaf Financial Limited | Professional & scientific | 2017 |
| Bayleaf Group Limited | Administrative & support | 2024 |
| Bayley Brothers Hereford Limited | Other services | 1938 |
| Bayliss Limited | Wholesale & retail | 2009 |
| Bayplus Limited | Other services | 1989 |
| Baytree Breaks Ltd | Hospitality | 2022 |
| BAZ Chapman Ltd | Education | 2016 |
| BB Bikes Midlands Ltd | Administrative & support | 2018 |
| BB Care Derby Limited | Construction | 2020 |
| BB Care Erdington Limited | Construction | 2020 |
| BB Care Hellingly Limited | Construction | 2020 |
| BB Care Telford Limited | Construction | 2020 |
| BB Randlay Limited | Construction | 2020 |
| BBH Property Management Ltd | Real estate | 2025 |
| Bbhr Limited | Hospitality | 2026 |
| Bblh Services Limited | Professional & scientific | 2020 |
| Bbll Limited | Hospitality | 2026 |
| Bbrc Ltd | Construction | 2020 |
| Bbsco Limited | Real estate | 2012 |
| BBX Fitness Limited | Education | 2021 |
| BC Johnson Properties Ltd | Real estate | 2021 |
| BCB Advisory Ltd | Professional & scientific | 2025 |
| BCM (West Midlands) Limited | Information & communication | 2013 |
| Bcrj Management Services Ltd. | Professional & scientific | 2017 |
| BCS Property Solutions Ltd | Real estate | 2020 |
| BD Fencing Supplies Ltd | Manufacturing | 2022 |
| Bdam Ltd | Extraterritorial | 2022 |
| Bdoh Ltd | Extraterritorial | 2022 |
| Bdtuition Limited | Education | 2025 |
| BE the Star Posters Group Ltd | Administrative & support | 2019 |
| BE Well Psychological Services Limited | Professional & scientific | 2014 |
| BE. More Homely Holdings Ltd | Other services | 2022 |
| BE. More Homely Ltd | Hospitality | 2019 |
| Beacon & Ledger Accounting and Consulting Ltd | Information & communication | 2025 |
| Beacon Autos (West Midlands) Limited | Administrative & support | 2005 |
| Beacon Family Services CIC | Health & social care | 2018 |
| Beacon Rubber and Plastics Limited | Manufacturing | 2002 |
| Beacon Sales and Consulting Limited | Professional & scientific | 2016 |
| Beacon Services Resources CIC | Information & communication | 2021 |
| Beaconsfield Court Limited | Households | 1980 |
| Beancounter Accountants Limited | Professional & scientific | 2021 |
| Bearded Ltd | Wholesale & retail | 2018 |
| Beat the Odds Limited | Other services | 2021 |
| Beatrice Court (Lichfield) Freehold Limited | Households | 2019 |
| Beats Financial Planning Ltd | Professional & scientific | 2013 |
| Beats Pro Ltd | Health & social care | 2025 |
| Beaufort Investments Limited | Administrative & support | 1997 |
| Beauly Properties Limited | Real estate | 2002 |
| Beaumont Stores Limited | Wholesale & retail | 2005 |
| Beauty and Belle Limited | Arts & recreation | 2025 |
| Beauty Box 34 Ltd | Other services | 2017 |
| Beauty Kitchen International Limited | Wholesale & retail | 2023 |
| Beauty Products Trading Limited | Wholesale & retail | 2023 |
| Beauty Services & Training by SB Ltd | Education | 2026 |
| Beckett Design Limited | Professional & scientific | 2025 |
| Becontree Accountants Ltd | Professional & scientific | 2018 |
| Becosan UK Ltd | Construction | 2021 |
| Bedroom Gallery Limited | Wholesale & retail | 2018 |
| Beds Emporium Ltd | Wholesale & retail | 2025 |
| BEE Places Ltd | Hospitality | 2021 |
| Beebahsal Consulting Limited | Health & social care | 2020 |
| Beech Hill Grange Limited | Health & social care | 2001 |
| Beechcroft Court Limited | Households | 1998 |
| Beeches Kids and Training Limited | Health & social care | 2012 |
| Beehive Developments Limited | Real estate | 2007 |
| Beem Electrical Services Limited | Construction | 2022 |
| Beflow Consultancy Ltd | Professional & scientific | 2020 |
| Bel-Mar Russell Limited | Administrative & support | 2011 |
| Belcon Limited | Real estate | 2022 |
| Belfry Electrical Services Ltd | Construction | 2021 |
| Belindabay Limited | Wholesale & retail | 2025 |
| Bell LAX Consultants Limited | Professional & scientific | 2011 |
| Bella Sophia Ltd | Other services | 2023 |
| Bellamy Aircraft Technical Services Limited | Manufacturing | 2017 |
| Belmoc Care Ltd | Health & social care | 2016 |
| Belmont Capital Holdings Ltd | Financial services | 2025 |
| Belwell Construction & Facilities Ltd | Administrative & support | 2018 |
| Belwell Drive Residents Association Limited | Households | 2009 |
| Belwell Gardens Medical Ltd | Health & social care | 2023 |
| Belwell Gardens RTM Company Limited | Hospitality | 2009 |
| Belwell Lane Management Company Limited | Households | 1999 |
| Belwell Property Investments Limited | Real estate | 2017 |
| Bemi Investments Limited | Financial services | 2023 |
| BEN Parsons Design Limited | Professional & scientific | 2003 |
| Bencoms Ltd | Real estate | 2026 |
| Bendaisy Properties Limited | Real estate | 2012 |
| Benevolence Retail Group Limited | Wholesale & retail | 2023 |
| Beningbrough Ltd | Transport & logistics | 2021 |
| Benli Ltd | Real estate | 2012 |
| Benlott Consultants Limited | Professional & scientific | 2024 |