| Brownbill Creatives Ltd | Arts & recreation | 2025 |
| Brownes Barbers Co Limited | Other services | 2022 |
| Browning Developments (Liverpool) Ltd | Construction | 2016 |
| Brownlee Performance Limited | Health & social care | 2017 |
| Brownlow in the Community CIC | Health & social care | 2025 |
| Brownlow Partners Ltd | Real estate | 2024 |
| Brownlows 2024 Limited | Hospitality | 2024 |
| Brownlows Inn Guest House 2021 Limited | Hospitality | 2021 |
| Brownlows Inn Northwest Hotel Limited | Hospitality | 2018 |
| Brownlows Inn Rooms Limited | Hospitality | 2023 |
| Brownlows Mount Limited | Hospitality | 2019 |
| Brownmoor Bistro Ltd | Hospitality | 2026 |
| Brownmoor Estates Limited | Real estate | 2014 |
| Brownmoor Express Ltd | Wholesale & retail | 2021 |
| Browns (Shopfitting & Construction) Limited | Construction | 2007 |
| Browns Cost Solutions Ltd | Administrative & support | 2017 |
| Browns Medical Provider Ltd | Health & social care | 2022 |
| Browns UK Holdings Ltd | Construction | 2018 |
| Brox Landscaping & Civils Ltd | Construction | 2023 |
| Brox Transport Ltd | Transport & logistics | 2021 |
| BRP Estimating Limited | Construction | 2024 |
| BRP Recreational Products UK Limited | Administrative & support | 2001 |
| BRR Trans Ltd | Transport & logistics | 2014 |
| Bruce Prentice Ltd | Health & social care | 2015 |
| Bruch Property Management Ltd | Real estate | 1998 |
| Brucklay House Management Company Limited | Households | 2001 |
| Brufut Residences Ltd | Real estate | 2025 |
| Brunch Cafe (NW) Limited | Hospitality | 2025 |
| Brunchlunch Ltd | Hospitality | 2025 |
| Bruncho MAN Limited | Hospitality | 2026 |
| Brunel Civils (NW) Ltd | Administrative & support | 2017 |
| Brunelli International Limited | Wholesale & retail | 2025 |
| Brunello Resourcing Limited | Administrative & support | 2007 |
| Brunoradeconsults Limited | Information & communication | 2019 |
| Brunswick Building Management Limited | Construction | 2019 |
| Brunswick Business Park Limited | Real estate | 1997 |
| Brunswick Computers Ltd | Information & communication | 2007 |
| Brunswick Fire Protection Ltd | Other services | 2010 |
| Brunswick Go-Local Ltd | Wholesale & retail | 2025 |
| Brunswick MOT & Service Centre Ltd | Wholesale & retail | 2011 |
| Brunswick Nutrition 1 Ltd | Hospitality | 2019 |
| Brunswick Parade Management Company Limited | Extraterritorial | 1989 |
| Brunswick Way LLP | | 2011 |
| Brunswicks Law Limited | Extraterritorial | 2014 |
| Bruntford Limited | Other services | 2022 |
| BRUSH2CLEAN Ltd | Administrative & support | 2025 |
| Brutuslc Limited | Administrative & support | 2011 |
| Bruzino Services Ltd | Hospitality | 2020 |
| Bryan & Bryant Construction Solutions Limited | Professional & scientific | 2019 |
| Bryan Gaskill Properties Limited | Real estate | 1997 |
| Brydie Logistics Limited | Transport & logistics | 2025 |
| Bryken (Holdings) Limited | Professional & scientific | 2010 |
| Bryken Limited | Manufacturing | 1982 |
| Brymore NO 1 Ltd | Real estate | 2018 |
| Brymore NO 2 Ltd | Real estate | 2018 |
| Brymore NO 3 Ltd | Real estate | 2018 |
| Bryn Defaid Holiday Park Limited | Hospitality | 2023 |
| Bryn Howel Caravans Limited | Hospitality | 1974 |
| Brynwell Farm Solar Limited | Energy | 2020 |
| Bryony Security Group Limited | Administrative & support | 2026 |
| Bryson Investments Limited | Real estate | 2025 |
| Bryten Ltd | Real estate | 2025 |
| Brytive Limited | Information & communication | 2015 |
| Bryxdene Enterprises Limited | Professional & scientific | 2014 |
| BS Ascent Limited | Wholesale & retail | 2026 |
| Bsafe Services Ltd | Professional & scientific | 2025 |
| BSC Events Ltd | Hospitality | 2025 |
| BSC Glossop Ltd | Hospitality | 2025 |
| BSC Hanger Ltd | Hospitality | 2025 |
| BSC Market Ltd | Hospitality | 2025 |
| BSC Plaza Ltd | Hospitality | 2023 |
| Bscl Realisations Limited | Wholesale & retail | 1988 |
| Bskw Ltd | Other services | 2019 |
| BSL Interpreting Solutions Ltd | Health & social care | 2014 |
| BSM Group Ltd | Construction | 2021 |
| BSS Investments Ltd | Financial services | 2025 |
| BT Facades Ltd | Construction | 2021 |
| BT Harrison Investments Limited | Real estate | 2018 |
| BT RAM Properties Limited | Real estate | 2025 |
| Btcw Limited | Wholesale & retail | 2019 |
| BTE Lettings Ltd | Real estate | 2015 |
| BTG Contracting Ltd | Construction | 2021 |
| Btgmedia Travel Group Ltd | Hospitality | 2020 |
| BTH Limited | Construction | 2017 |
| BTJ Construction Services Ltd | Construction | 2025 |
| BTL Gyms Ltd | Arts & recreation | 2021 |
| BTL Land & Property Ltd | Real estate | 2022 |
| BTL MD Consulting Limited | Professional & scientific | 2022 |
| BTM Design Ltd | Construction | 2025 |
| BTMH20 Company Ltd | Other services | 2025 |
| Btsl Instrumentation & Calibration Ltd | Professional & scientific | 2020 |
| BTX Medical Limited | Health & social care | 2019 |
| Bubble & Berry Ltd | Wholesale & retail | 2018 |
| Bubble and Squeak Balloons Ltd | Wholesale & retail | 2023 |
| Bubble Media Group Limited | Information & communication | 2025 |
| Bubble Waffle Liverpool Ltd | Hospitality | 2025 |
| Bubbledelights Ltd | Hospitality | 2024 |
| Bubbles Cafe Ltd | Hospitality | 2026 |
| Bubbles N Buffers Ltd | Administrative & support | 2025 |
| Bublapp Ltd | Information & communication | 2025 |