| Balance Kitchen Ltd | Hospitality | 2025 |
| Balcomb Creative Limited | Professional & scientific | 2022 |
| Baldwin Fine Art Limited | Arts & recreation | 2022 |
| Ball Connection Consultancy Ltd | Professional & scientific | 2017 |
| Ballers Kitchen (UK) Limited | Hospitality | 2024 |
| Ballers Kitchen Bury Ltd | Hospitality | 2026 |
| Ballybearart Ltd | Arts & recreation | 2024 |
| Balmers Garden Machinery Holdings Limited | Financial services | 2012 |
| Balmers GM Limited | Manufacturing | 2012 |
| Balmoral Developments Limited | Real estate | 1992 |
| Balustrade Solutions Ltd | Construction | 2014 |
| Bama Healthcare Ltd | Health & social care | 2023 |
| Bambava Limited | Information & communication | 2014 |
| Bambinos MCR Limited | Health & social care | 2015 |
| Bambinos Tots Ltd | Education | 2021 |
| Bamboo Digital Growth Co Ltd | Professional & scientific | 2026 |
| Bamcam TV Ltd | Information & communication | 2020 |
| Bamford Home Improvements Limited | Construction | 2016 |
| Bamtammy D Limited | Health & social care | 2026 |
| Bangla Fusion Bury Ltd | Wholesale & retail | 2018 |
| Bank Self-Storage Ltd | Real estate | 2019 |
| Bank Self-Storage Salford Ltd | Real estate | 2020 |
| Bank Top Consulting Ltd | Professional & scientific | 2018 |
| Bannif Ltd | Financial services | 2022 |
| Banter Group Ltd | Wholesale & retail | 2019 |
| Bar Pros Limited | Wholesale & retail | 2019 |
| Barakah GAS Ltd | Construction | 2022 |
| Baratxuri Limited | Hospitality | 2015 |
| Barber Barber Group Limited | Other services | 2018 |
| Barber Barber Two Limited | Other services | 2016 |
| Barcheston Finance Limited | Professional & scientific | 2019 |
| Bardoc Family Practices Ltd | Health & social care | 2008 |
| Bargain Boss Limited | Wholesale & retail | 2026 |
| Bargain Worldd Limited | Wholesale & retail | 2024 |
| Bargainbuysuk Ltd | Wholesale & retail | 2023 |
| Bargainn World Limited | Wholesale & retail | 2024 |
| Bargainsbonanza Ltd | Wholesale & retail | 2019 |
| Bari Imam Ltd | Real estate | 2025 |
| Barista Cafe Bars Limited | Hospitality | 2009 |
| Barker Legal Recruitment Limited | Administrative & support | 2025 |
| Barker Mortgages Ltd | Financial services | 2022 |
| Barkingbeautyboutique Ltd | Professional & scientific | 2013 |
| Barlow Stanley Estates Limited | Real estate | 2017 |
| Barmax Bidco Limited | Information & communication | 2023 |
| Barmax Newco Limited | Information & communication | 2023 |
| Barmy Sarnie (Accrington) Limited | Hospitality | 2025 |
| Barnes Property Rentals Limited | Real estate | 2025 |
| Barraclough Holdings Ltd | Financial services | 2026 |
| Barras Estates Limited | Agriculture & fishing | 2023 |
| Barrington Brown Limited | Information & communication | 2019 |
| Barringtons Care Solutions Ltd | Professional & scientific | 2019 |
| Barry Bennett Limited | Wholesale & retail | 1971 |
| Barry Seven Limited | Arts & recreation | 2023 |
| Barton Equestrian Centre Limited | Arts & recreation | 2004 |
| Barton School of Riding Limited | Arts & recreation | 2025 |
| Bashuria Mela Limited | Hospitality | 2025 |
| Basrow Ltd | Construction | 2020 |
| Basslane Ltd | Construction | 2024 |
| Bast Group Ltd | Professional & scientific | 2023 |
| Bast House Farm Management Company Limited | Households | 2024 |
| Batli Ltd | Real estate | 2006 |
| Baum Group Limited | Extraterritorial | 2003 |
| Baum Holdings Limited | Financial services | 2021 |
| Baum Home Limited | Extraterritorial | 2014 |
| Baum Trading Limited | Wholesale & retail | 1999 |
| Baumtex Limited | Extraterritorial | 2003 |
| Baxenden Management Company Limited | Professional & scientific | 2016 |
| Bayte AL -Ziyara UK Ltd | Wholesale & retail | 2025 |
| Bayvilla Properties Limited | Real estate | 2016 |
| Bazkat Investments Limited | Financial services | 2024 |
| BB Retail Consulting Limited | Professional & scientific | 2024 |
| BBP Estates Global Limited | Information & communication | 2017 |
| Bbrs NW Ltd | Wholesale & retail | 2017 |
| BC Cloud Consulting Ltd | Wholesale & retail | 2018 |
| BC Plant & Transport Limited | Administrative & support | 2002 |
| BCM786EXPRESS Limited | Hospitality | 2021 |
| Bcvw Ltd | Wholesale & retail | 2018 |
| Bcvw Recovery Ltd | Transport & logistics | 2025 |
| BD Bozek Ltd | Real estate | 2025 |
| BD Stumbilich Properties Ltd | Real estate | 2021 |
| BDB Infrastructure Ltd | Construction | 2023 |
| BDB Plant Hire Ltd | Administrative & support | 2021 |
| BDB Property Services Ltd | Administrative & support | 2023 |
| BDB Special Projects Ltd | Construction | 2017 |
| BDE Accountants Ltd | Professional & scientific | 2014 |
| BDP Electrical Installations Ltd | Construction | 2014 |
| BDR Leisure Ltd | Arts & recreation | 2025 |
| BDS (Site-Prep) Limited | Construction | 2020 |
| BE Languages Limited | Professional & scientific | 2023 |
| BE Real Estate Limited | Real estate | 2022 |
| Beachfield Developments Limited | Real estate | 1998 |
| Beal Associates Limited | Extraterritorial | 2021 |
| Beastmood Ltd | Wholesale & retail | 2024 |
| Beau Holdings Limited | Extraterritorial | 2020 |
| Beau Visage Beauty Ltd | Other services | 2013 |
| Beau Works Limited | Households | 2004 |
| Beautik Manufacturing Co Limited | | 1973 |
| Beautique Tanning Salon Limited | Other services | 2016 |
| Beauty Masters Ltd | Wholesale & retail | 2025 |
| Beauty Worx ( Blackley ) Ltd | Other services | 2015 |