| Belgrave & Rogers Investments Limited | Real estate | 2020 |
| Belgrave Mind Ltd | Other services | 2021 |
| Beljere Investments Limited | Financial services | 2019 |
| Beljere Limited | Financial services | 2014 |
| Bella Desserts Ltd | Hospitality | 2025 |
| Bella Zeynep Ltd | Other services | 2025 |
| Bellevie Living Limited | Health & social care | 2025 |
| Bellissimo Studio Limited | Other services | 2021 |
| Bellker Ltd | Financial services | 2024 |
| Belsize Music Limited | Information & communication | 1970 |
| Bemerton Property Ltd | Real estate | 2025 |
| Bemi Media Limited | Professional & scientific | 2025 |
| BEN and Lisa Simpson Holdings Ltd | Financial services | 2024 |
| Benchframe Limited | Administrative & support | 2020 |
| Bendi Ltd | Professional & scientific | 2004 |
| Benmaud Properties Limited | Real estate | 2024 |
| Bennett & Bowman Interiors Limited | Professional & scientific | 1983 |
| Bennytee Healthcare Services Ltd | Health & social care | 2018 |
| Benson Williams Ltd | Professional & scientific | 2025 |
| Benson Williams Professional Will Writers Limited | Professional & scientific | 2003 |
| Bentley Communications Limited | Construction | 2025 |
| Benzojie International Ltd | Real estate | 2022 |
| Beorma Leather Company Limited | Manufacturing | 2022 |
| Beowulf Brewing Company Ltd | Manufacturing | 2022 |
| Berki Motors Trading Limited | Wholesale & retail | 2020 |
| Berkley Leisure Limited | Hospitality | 2010 |
| Berlec Ltd | Construction | 2025 |
| Bernstein Ltd | Wholesale & retail | 1986 |
| Bertram 2 Holdings Limited | Professional & scientific | 2016 |
| BERTRAM2 Limited | Real estate | 2016 |
| Bescot Carwash Ltd | Wholesale & retail | 2026 |
| Bescot Walsall Limited | Financial services | 2024 |
| Bespoke Blessings Ltd | Wholesale & retail | 2024 |
| Bespoke Career Solutions Ltd | Administrative & support | 2024 |
| Bespoke Executive Transfers Ltd | Transport & logistics | 2020 |
| Bespoke Glazing Limited | Construction | 2014 |
| Bespoke Glazing Supply & Fitting Ltd | Construction | 2022 |
| Bespoke Handling Solutions Ltd | Manufacturing | 2012 |
| Bespoke Hardware Ltd | Wholesale & retail | 2020 |
| Bespoke Joinery Specialists Ltd | Construction | 2012 |
| Bespoke Quality Care Ltd | Health & social care | 2020 |
| Bespoke Seating Limited | Manufacturing | 2019 |
| Bespoke Van Conversions Ltd | Manufacturing | 2023 |
| Best Bind Carpet Binding Ltd | Manufacturing | 2021 |
| Best Creative Path Ltd | Information & communication | 2023 |
| Best Deals Private Limited | Wholesale & retail | 2022 |
| Best Educators Ltd | Education | 2025 |
| Best Hot Stuff Limited | Wholesale & retail | 2025 |
| Best MAN Official Ltd | Hospitality | 2018 |
| Best MMT Limited | Public administration | 2024 |
| Best NO1 Ltd | Other services | 2025 |
| Best One Car Sales Limited | Wholesale & retail | 2025 |
| Best One Food Ltd | Wholesale & retail | 2024 |
| Best Payroll Solution Limited | Professional & scientific | 2018 |
| Best Prestige Autos Ltd | Wholesale & retail | 2024 |
| Best Vape Walsall Ltd | Wholesale & retail | 2026 |
| Bestco Carpets & Flooring Ltd | Wholesale & retail | 2025 |
| Bestway Enterprises Ltd | Transport & logistics | 2023 |
| BET Investments Limited | Real estate | 2024 |
| Betaflo Heating UK Ltd | Construction | 2026 |
| Betalic Limited | Professional & scientific | 2013 |
| Betteridge Butchers Limited | Wholesale & retail | 2014 |
| Between YOU and ME Seva Ltd | Health & social care | 2005 |
| Beulah Land Properties Limited | Financial services | 2019 |
| Beulah Totalcare Limited | Real estate | 2025 |
| BEULAH4ME Properties Limited | Real estate | 2024 |
| Beverley Maybury Limited | Other services | 2003 |
| BEX Shiner Limited | Wholesale & retail | 2023 |
| BGI Holdings Ltd | Real estate | 2020 |
| Bglam Ltd | Wholesale & retail | 2023 |
| BGS Solutions & Logistics Ltd | Transport & logistics | 2014 |
| Bgsto Limited | Transport & logistics | 2025 |
| BH Bloxwich Limited | Hospitality | 2019 |
| BH Online Limited | Wholesale & retail | 2008 |
| Bhakta Healthcare Limited | Health & social care | 2015 |
| Bhakta Properties Limited | Real estate | 2019 |
| Bhambra Investments U.K. Ltd | Real estate | 2025 |
| Bhandal Haulage and Surfacing Ltd | Transport & logistics | 2016 |
| Bhardwaj GAS and Boiler Services Limited | Wholesale & retail | 2025 |
| Bharti Properties Ltd | Construction | 2025 |
| Bhatia Services Limited | Transport & logistics | 2021 |
| BHB Group Ltd | Construction | 2023 |
| BHG Group Limited | Financial services | 2023 |
| BHG Group Properties Limited | Real estate | 2023 |
| Bhnk (Subco) Ltd | Real estate | 2024 |
| Bhnk Ltd. | Real estate | 2003 |
| Bhooms Ltd | Health & social care | 2019 |
| Bhsa Limited | Households | 2025 |
| Bhullar Building Construction Limited | Construction | 2021 |
| Bianca Glamour Beauty Training Academy Ltd | Other services | 2025 |
| Bianca Ltd | Financial services | 2024 |
| Bianca Productions Ltd | Administrative & support | 2025 |
| Biancasparkstudio Ltd | Manufacturing | 2026 |
| BIB Bakehouse Limited | Hospitality | 2022 |
| Bibi Properties (Walsall) Limited | Real estate | 2008 |
| Biblocare Venture Limited | Health & social care | 2021 |
| Bickton Close (61-67 Odds) Management Company Limited | Households | 2003 |
| Biddle Air Curtains Limited | Extraterritorial | 1980 |
| Biddle Air Systems Limited | Extraterritorial | 2022 |
| Biddle Limited | Extraterritorial | 1955 |