| Balco Plant Services Ltd | Manufacturing | 2020 |
| Balerdi Ganzarain Ltd | Health & social care | 2016 |
| Balico Ltd | Health & social care | 2020 |
| Balistan Limited | Professional & scientific | 2023 |
| Ballasalla Investments Ltd | Real estate | 2004 |
| Balloon Land UK Ltd | Wholesale & retail | 2022 |
| Balloons Symphony Ltd | Wholesale & retail | 2023 |
| Bally OFF Licence Ltd | Wholesale & retail | 2021 |
| Ballybane Brickens Ltd | Extraterritorial | 2019 |
| Ballzone Education C.I.C. | Arts & recreation | 2010 |
| Balmoral Management Company Limited | Households | 2002 |
| Bamford Way Recycling Ltd | Water & waste | 2018 |
| Banan Care Medical Company Limited | Health & social care | 2025 |
| Bancroft Protection Plans Ltd | Professional & scientific | 2024 |
| BAND86 Ltd | Arts & recreation | 2025 |
| Bangla Beats Limited | Arts & recreation | 2020 |
| Bangladeshifoods Ltd | Hospitality | 2026 |
| Bankhall Developments Limited | Real estate | 2016 |
| Banktop Industries Ltd | Hospitality | 2018 |
| Banstead Kitchen Studio Limited | Manufacturing | 2015 |
| Bantu Blends Ltd | Manufacturing | 2026 |
| Bar 21 Limited | Hospitality | 2009 |
| Barakah Property Group Ltd | Real estate | 2025 |
| Barber Construction Limited | Construction | 2023 |
| Barby (UK) Ltd | Wholesale & retail | 2009 |
| Barcroft Mortgage, Finance and Insurance Services Ltd. | Financial services | 1990 |
| Bardsley Car Sales Ltd | Wholesale & retail | 2024 |
| Bardsley Property Holdings Ltd | Real estate | 2022 |
| Bardsley Property Solutions Limited | Real estate | 2025 |
| Bardsley Vale Nursery Ltd | Education | 2013 |
| Barefoot Social Care Services Limited | Health & social care | 2019 |
| Barfab (NW) Limited | Manufacturing | 2019 |
| Bargain Boarding Ltd | Construction | 2025 |
| Bargain Express Online Ltd | Wholesale & retail | 2020 |
| Bargainmax Online Limited | Wholesale & retail | 2024 |
| Bargains 4 Less Ltd | Wholesale & retail | 2016 |
| Bargains for Everyone Ltd | Wholesale & retail | 2025 |
| Barham Investment Group Ltd | Financial services | 2024 |
| Bark.London Ltd | Professional & scientific | 2019 |
| Barkin Construction Limited | Construction | 1988 |
| Barnt Green Dental Centre Limited | Health & social care | 2008 |
| Barnt Green Dental Ltd | Health & social care | 2017 |
| Baron Properties Investment Limited | Hospitality | 2025 |
| Barry Cars Private Hire Ltd | Transport & logistics | 2024 |
| Barter Systems Limited | Construction | 2021 |
| Barton Electrical Holdings Limited | Construction | 2018 |
| Baruch-Yah Limited | Wholesale & retail | 2021 |
| Basco Limited | Wholesale & retail | 2025 |
| Basharat Properties Ltd | Real estate | 2023 |
| Basketball North West Development CIC | Arts & recreation | 2025 |
| Basol Engineering England Ltd | Professional & scientific | 2021 |
| Basra Transport Services Ltd | Transport & logistics | 2024 |
| Bata Limited | Information & communication | 2026 |
| Bates and Laycock Properties Limited | Real estate | 2026 |
| Bath to the Future Limited | Wholesale & retail | 2017 |
| Baum Construction Management Ltd | Construction | 2019 |
| Bavaro Group UK Limited | Manufacturing | 2008 |
| Baveuk Ltd | Wholesale & retail | 2020 |
| Bawa Property Holdings Ltd | Real estate | 2022 |
| Baxandalls Cafe Limited | Hospitality | 2016 |
| Baxter Plumbing & Heating Solutions Limited | Wholesale & retail | 2008 |
| Bayscope Trading Limited | Administrative & support | 2015 |
| Bayse Fitness Club Altrincham Limited | Arts & recreation | 2022 |
| Bayse Fitness Club Wilmslow Ltd | Arts & recreation | 2024 |
| Bayse Reformer Pilates Bolton Ltd | Other services | 2025 |
| Baytree Brunch and Coffee House Ltd | Hospitality | 2025 |
| BAZ Arjomand Ltd | Professional & scientific | 2019 |
| BAZ Autos Ltd | Wholesale & retail | 2025 |
| Bazooka Futsal Limited | Arts & recreation | 2018 |
| BB Access Limited | Professional & scientific | 2019 |
| BB Legal Consultancy Limited | Administrative & support | 2017 |
| BBK Properties Ltd | Construction | 2012 |
| BBK Rentals Ltd | Real estate | 2023 |
| BBQ Bissli Holdings Ltd | Financial services | 2024 |
| BBQ Flames Ltd | Hospitality | 2016 |
| BBQ Platters Limited | Hospitality | 2026 |
| BBQ Steak Limited | Hospitality | 2025 |
| BBS Catering Ltd | Hospitality | 2023 |
| BC Engines & Gearboxes Ltd | Wholesale & retail | 2022 |
| Bcan Solutions Ltd | Manufacturing | 2025 |
| Bcda Logistic Limited | Transport & logistics | 2020 |
| Bcharlie Ltd | Construction | 2018 |
| BCJ Ltd | Professional & scientific | 2018 |
| BCS Garage and Tyres Ltd | Wholesale & retail | 2026 |
| BD Sarees Ltd | Wholesale & retail | 2023 |
| BDL Development Ltd | Construction | 2020 |
| BDM Marketing Ltd | Information & communication | 2025 |
| BDM Services Limited | Construction | 2018 |
| Bdmm Associate Ltd | Administrative & support | 2024 |
| BE in Bloom Therapy Ltd | Public administration | 2025 |
| BE Transformed Clinics Ltd | Other services | 2024 |
| BE VIP Black Card Limited | Administrative & support | 2022 |
| BE VIP Clothing Ltd | Wholesale & retail | 2021 |
| BE! and IT IS! CIC | Other services | 2023 |
| Beacare Services Ltd | Health & social care | 2025 |
| Beacon Books & Media Limited | Information & communication | 2012 |
| Beacon GP Care Limited | Health & social care | 2014 |
| Beadazzled Ltd | Arts & recreation | 2025 |
| Beal HEY Animal Feeds Ltd | Wholesale & retail | 2008 |
| Beammaster Ltd | Wholesale & retail | 2025 |