| Birkdale Motorist Centre Ltd | Wholesale & retail | 2015 |
| Birkdale Park Limited | Health & social care | 2023 |
| Birkdale Properties Southport Ltd | Real estate | 2004 |
| Birkdale Property Limited | Real estate | 2021 |
| Birkdale Stationers Ltd | Transport & logistics | 2016 |
| Birkdale Tandoori Ltd | Hospitality | 2024 |
| Birkdale TUK Tuks Ltd | Transport & logistics | 2021 |
| Birkdale Venetian Bathrooms and Tiling Services Ltd | Construction | 2026 |
| Birkdale Wine & Dine Limited | Hospitality | 2022 |
| Birkdale Wines Ltd | Wholesale & retail | 2019 |
| Birkdalepizza Limited | Hospitality | 2022 |
| Birley Court Management (Southport) Limited | Households | 1979 |
| Bishops Caravans & Motorhomes Ltd | Hospitality | 2015 |
| Bishopsbrook Limited | Other services | 2019 |
| BISTRO21 Ltd | Hospitality | 2013 |
| BJS Plastic Surgery Ltd | Health & social care | 2025 |
| Black and White Bodycare Limited | Wholesale & retail | 2023 |
| Black Beam Limited | Construction | 2022 |
| Black Cat Styles Ltd | Arts & recreation | 2022 |
| Black Sheep Agriculture Limited | Agriculture & fishing | 2015 |
| Blackpool Comfort Mobility Limited | Other services | 2018 |
| Blackpool Sands Ltd | Hospitality | 2018 |
| Bladerunners Landscapes Ltd | Administrative & support | 2006 |
| Blakewater Recruitment Limited | Administrative & support | 2023 |
| Blockbuster Furniture Southport Limited | Wholesale & retail | 2019 |
| Blood Culture Ltd | Health & social care | 2025 |
| Bloomcare Greengables Ltd | Health & social care | 2022 |
| Bloomcare Group Ltd | Professional & scientific | 2020 |
| Bloomcare Property Ltd | Real estate | 2022 |
| Bloomfield Medical Limited | Health & social care | 2010 |
| Blossom L & L Ltd | Other services | 2025 |
| Blossom Nails Beauty K3 Ltd | Other services | 2024 |
| Blossom Space Ltd | Other services | 2021 |
| Blue COW Digital Limited | Professional & scientific | 2019 |
| Blue Cube Partnership Limited | Water & waste | 2005 |
| Blue Fish Maintenance Limited | Construction | 2002 |
| Blue Hippo (UK) Ltd | Wholesale & retail | 2013 |
| Blue Hippo Consulting Limited | Financial services | 2024 |
| Blue Oak (Series One) Limited | Other services | 2024 |
| Blue Pear Publishing Limited | Information & communication | 2022 |
| Blue Sky Properties (UK 2017) Limited | Real estate | 2017 |
| Blue Tower Limited | Real estate | 2024 |
| Blueape Limited | Construction | 2021 |
| Blueprint Connect Ltd | Information & communication | 2013 |
| Blundell Consulting Ltd | Information & communication | 2015 |
| Blundell Links Court Management Company Limited | Households | 2001 |
| Blundellsands Kindergarten Ltd | Health & social care | 2013 |
| Blush Studio UK Limited | Wholesale & retail | 2021 |
| Bluto's EAT Burritos Ltd | Hospitality | 2023 |
| Blythe Court (Birkdale) Residents Company Limited | Households | 2002 |
| Blythe Court (Churchtown) Residents Company Limited | Households | 2002 |
| Blythe Village (Ainsdale) Management Company Limited | Households | 2005 |
| BM Trading (North West) Limited | Wholesale & retail | 2026 |
| BMB Plumbing & Heating Ltd | Construction | 2019 |
| Bmga Studios Limited | Professional & scientific | 2025 |
| BMR (NW) Ltd | Administrative & support | 2018 |
| BMR Compliance Limited | Administrative & support | 2005 |
| BMR Consulting Limited | Administrative & support | 2007 |
| Board Matters Limited | Professional & scientific | 2023 |
| Bobcat Itsm Solutions Ltd | Administrative & support | 2023 |
| Bogey Boys Ltd | Manufacturing | 2019 |
| Boho PUP Grooming Ltd | Other services | 2025 |
| Bonus Track Vinyls Ltd | Wholesale & retail | 2023 |
| BOO Holdings Ltd | Real estate | 2017 |
| BOO Khaem Village Thai Cuisine Ltd | Hospitality | 2018 |
| BOOK2025 Transport Ltd | Transport & logistics | 2025 |
| Booth Dental Limited | Health & social care | 2008 |
| Boothwood White Innovation Limited | Construction | 2018 |
| Bootle Motor Company Limited | Wholesale & retail | 2014 |
| Boov Ltd | Information & communication | 2018 |
| Border Cottages Ltd | Real estate | 2025 |
| Borrans Lodge Limited | Households | 1974 |
| Boscow Nurseries Limited | Administrative & support | 2003 |
| Boss Training Solutions Ltd | Administrative & support | 2018 |
| BOSS804 Ltd | Wholesale & retail | 2025 |
| Bosstech Limited | Other services | 2015 |
| Boston Construction & Surveyors Ltd | Construction | 2021 |
| Botaneco Ltd | Administrative & support | 2024 |
| Botanic Hospitality Ltd | Hospitality | 2025 |
| Bottega Della Pasta Limited | Manufacturing | 2024 |
| Bottled GAS Ltd | Wholesale & retail | 2022 |
| Boujeetiq Ltd | Wholesale & retail | 2024 |
| Boundary Street Management Company Limited | Households | 1984 |
| Boundry Ltd | Information & communication | 2017 |
| Bowland Court Limited | Real estate | 1988 |
| Boye Consultancy Limited | Financial services | 2015 |
| Boysenberry Food Group Ltd | Hospitality | 2020 |
| BP Groundwork Ltd | Construction | 2017 |
| Bquartey Limited | Health & social care | 2014 |
| Bradley Electrical Contracting Ltd | Construction | 2019 |
| Bradley Joinery & Construction Ltd | Manufacturing | 2025 |
| Bradleys Building & Property Limited | Construction | 2003 |
| Bradshaw Court Flat Management Company (Southport) Limited | Households | 1997 |
| Braimbridge & Langford-Jones Limited | Professional & scientific | 2008 |
| Brake Bonding Ltd. | Manufacturing | 2013 |
| Bramble (3) RTM Company Ltd | Households | 2024 |
| Brand 4 Trend Ltd | Hospitality | 2019 |
| Brand Republic Limited | Information & communication | 2018 |
| Brand Reviews Critics Limited | Professional & scientific | 2023 |
| Brand Way Food Ltd | Wholesale & retail | 2019 |