| Bill and COO Ramsbottom Ltd | Hospitality | 2026 |
| Binte Hawa Ltd | Wholesale & retail | 2024 |
| Biogem Limited | Wholesale & retail | 2007 |
| Birch House Creative Limited | Professional & scientific | 2014 |
| Birch House Limited | Information & communication | 2013 |
| Birch Mill Nutrition Ltd | Wholesale & retail | 2024 |
| Birchlea Management Company Limited | Households | 2003 |
| Birchwise Limited | Real estate | 1986 |
| Birdhall Developments Ltd | Real estate | 2015 |
| Birkdale Building Services Ltd | Construction | 2016 |
| Birketts Law Limited | Professional & scientific | 2017 |
| BIT 9 Limited | Wholesale & retail | 2017 |
| Bizcentres Nelson Ltd | Real estate | 2020 |
| Bizcentres Salford Ltd | Real estate | 2020 |
| Bizthrive Limited | Wholesale & retail | 2024 |
| Bizzy B Services (Bury) Ltd | Wholesale & retail | 2014 |
| BJB Digital Media Solutions Ltd | Wholesale & retail | 2024 |
| Bjfc Ltd | Hospitality | 2017 |
| BKP Capital Ltd | Financial services | 2020 |
| Bkthree Limited | Hospitality | 2004 |
| BL Operations Limited | Administrative & support | 2018 |
| BL Operations Widnes Ltd | Administrative & support | 2022 |
| BL9 Brickwork Ltd | Construction | 2025 |
| BL9 Design Services Limited | Construction | 2018 |
| BL9 Ltd | Wholesale & retail | 2024 |
| Black Autism Manchester CIC | Public administration | 2023 |
| Black Bull Bury Limited | Hospitality | 2023 |
| Black Flash Promotions Ltd | Arts & recreation | 2020 |
| Black FOX Catering Ltd | Hospitality | 2025 |
| Black Velvet Investments Limited | Real estate | 2023 |
| Blackbird Pantry Ltd | Hospitality | 2018 |
| Blackburnopenhouse Ltd | Real estate | 2025 |
| Blackford Trading Estate Ltd | Real estate | 2024 |
| Blackford Tuition Ltd | Education | 2026 |
| Blacks Outdoor Retail Limited | Wholesale & retail | 2011 |
| Blackstone Housing Group Ltd | Professional & scientific | 2026 |
| Blackwood Barber Co Bury Limited | Other services | 2024 |
| Blackxray Ventures Ltd | Information & communication | 2025 |
| Blair London Ltd | Administrative & support | 2012 |
| Blankcanvasmediasolutions Limited | Professional & scientific | 2010 |
| Blemish Holdings Limited | Financial services | 2020 |
| Blemish Limited | Health & social care | 2004 |
| Blinkin Grand Spaces - Newtons of Bury Ltd | Hospitality | 2025 |
| Bliss Beauty Room Limited | Other services | 2011 |
| Blixora Limited | Wholesale & retail | 2025 |
| Blji Holdings Ltd | Professional & scientific | 2026 |
| Block Finance Ltd | Financial services | 2026 |
| Block Property Investments Ltd | Real estate | 2010 |
| Block Property Management Limited | Real estate | 2006 |
| Bloom Coffee Co Ltd | Wholesale & retail | 2017 |
| Bloom Fundraising Ltd | Other services | 2017 |
| Bloom Psychological Services Ltd | Health & social care | 2026 |
| Bloom Solutions Ltd | Information & communication | 2021 |
| BLT Energy Group UK Ltd | Professional & scientific | 2025 |
| Blu-Zed Limited | Administrative & support | 2025 |
| Blue Apartments Ltd | Real estate | 2026 |
| Blue Diamond Technology Ltd | Information & communication | 2025 |
| Blue Flame Performance Engineering Ltd | | 2000 |
| Blue Horse Holdings Ltd | Real estate | 2025 |
| Blue Horse Property Ltd | Construction | 2022 |
| Blue Moon Estates Limited | Hospitality | 2003 |
| Blue Mountain AI Ltd | Information & communication | 2025 |
| Blue RAJ Limited | Wholesale & retail | 2021 |
| Bluebird Music CIC | Education | 2025 |
| Bluebirds Labouring Ltd | Water & waste | 2024 |
| Bluebug TV Limited | Information & communication | 2012 |
| Blueearth Corporation Ltd | Wholesale & retail | 2024 |
| Bluegrass Couriers Limited | Transport & logistics | 2018 |
| Bluemotion Properties Limited | Real estate | 2016 |
| Blueness Services Limited | Hospitality | 2025 |
| Blueprint Creative Limited | Professional & scientific | 2020 |
| Bluetree Media Ltd | Professional & scientific | 2017 |
| Bluewalk Productions Ltd | Professional & scientific | 2026 |
| Bluewater Law Solicitors Limited | Professional & scientific | 2013 |
| Bluntisham Nature Restoration Project Ltd | Professional & scientific | 2025 |
| Bluskye Limited | Professional & scientific | 2022 |
| BLÙ the Label Limited | Wholesale & retail | 2020 |
| BM Housing Group Limited | Real estate | 2026 |
| BMG Car Sale Limited | Wholesale & retail | 2025 |
| Bmst and Training Academy Ltd | Health & social care | 2023 |
| BN Holdings (NW) Ltd | Hospitality | 2025 |
| Bneutral Ltd | Professional & scientific | 2023 |
| Board Verify Ltd | Administrative & support | 2026 |
| Bobbles Hair Holdings Limited | Other services | 2025 |
| Bobbles Hair Limited | Other services | 1998 |
| Bobby Digger Land Ltd | Wholesale & retail | 2025 |
| Boby Global Traders Ltd | Wholesale & retail | 2025 |
| Boca Associates Limited | Professional & scientific | 2022 |
| Bodansky Sponsorship Limited | Administrative & support | 1998 |
| Bodax Ltd | Transport & logistics | 2023 |
| Body Essentials (Manchester) Ltd | Other services | 2011 |
| Bodyshop Engineering Services Ltd | Construction | 2023 |
| Bodyshopguru Ltd | Professional & scientific | 2020 |
| Bold Blush Ltd | Wholesale & retail | 2024 |
| Bollesty Holdings Ltd | Financial services | 2024 |
| Bollesty Properties Ltd | Real estate | 2023 |
| Bollin Valley Limited | Hospitality | 2002 |
| Bolt-On Engineering Limited | Professional & scientific | 2012 |
| Boltco Holdings Limited | Financial services | 2024 |
| Bolton Brickwork Specialist Ltd | Construction | 2023 |