| Barako Relief Ltd | Other services | 2025 |
| Baranski Maintenance Ltd | Wholesale & retail | 2024 |
| Barbara Matthews Limited | Real estate | 2006 |
| Barbasco Limited | Other services | 2017 |
| Barbecue House Leicester Ltd | Hospitality | 2023 |
| Barber Baxx Ltd | Other services | 2023 |
| Barber Estates Limited | Households | 2023 |
| Barber Fuccio Limited | Other services | 2016 |
| Barber Izmir Ltd | Other services | 2022 |
| Barbershop A.M.E.N Ltd | Other services | 2026 |
| Barby Unique Ltd | Transport & logistics | 2015 |
| Barc Holdings Ltd | Financial services | 2025 |
| Barchha Estates Limited | Real estate | 2023 |
| Barchha Properties Ltd | Households | 2018 |
| Barclays (Coalville) Limited | Construction | 1961 |
| Barcode Energy Fuels Limited | Wholesale & retail | 2024 |
| Barcode Energy Limited | Manufacturing | 2024 |
| Barcode Food Limited | Agriculture & fishing | 2019 |
| Barcode Food Retail Limited | Wholesale & retail | 2024 |
| Barcombe Logistics Ltd | Transport & logistics | 2014 |
| Bardi Investments Limited | Real estate | 1965 |
| Bardic Rail Services Limited | Construction | 2008 |
| Bardo Consult Limited | Administrative & support | 2024 |
| Bardon Chapel Preservation Trust | Arts & recreation | 1996 |
| Bardon Security Ltd | Administrative & support | 2009 |
| Bare Escentials Limited | Wholesale & retail | 2025 |
| Baren Halal Ltd | Wholesale & retail | 2024 |
| Barese Ltd | Hospitality | 2020 |
| Barfi Queen Limited | Hospitality | 2025 |
| Barfia Leicester Limited | Hospitality | 2016 |
| Bargain Clicks Ltd | Wholesale & retail | 2015 |
| Bargain Depot Ltd | Wholesale & retail | 2003 |
| Bargain Pops Ltd | Wholesale & retail | 2025 |
| Bargain Wholesalers Ltd | Wholesale & retail | 2018 |
| Bargains Buzz Ltd | Wholesale & retail | 2025 |
| Bargainshv Ltd | Wholesale & retail | 2024 |
| Barham Court Limited | Extraterritorial | 2015 |
| Bari Transport Ltd | Transport & logistics | 2024 |
| Baria Fashions Limited | Manufacturing | 1991 |
| Bariqi Synergy Group Ltd | Wholesale & retail | 2014 |
| Bark Park Leicester Ltd | Other services | 2025 |
| Barkat Music Production Ltd | Wholesale & retail | 2026 |
| Barkby Estates Limited | Real estate | 2023 |
| Barkby Holdings Limited | Financial services | 2023 |
| Barkby Investments Limited | Real estate | 2016 |
| Barkby Ltd | Manufacturing | 2021 |
| Barkby Road, Syston, Residents Management Company Limited | Households | 2026 |
| Barker & ZO Ltd | Real estate | 2026 |
| Barker Fleming Group Ltd | Financial services | 2021 |
| Barker Fleming Limited | Construction | 2020 |
| Barker Fleming Studio Limited | Construction | 2020 |
| Barker Ross EOT Trustee Company Limited | Professional & scientific | 2024 |
| Barker Ross Group Limited | Administrative & support | 2013 |
| Barker Ross Recruitment Limited | Administrative & support | 1996 |
| Barker Ross Staffing Solutions Ltd | Administrative & support | 1988 |
| Barkerton Properties Limited | Real estate | 2023 |
| Barley Accounts Ltd | Professional & scientific | 2024 |
| Barley Healthcare Ltd | Wholesale & retail | 2023 |
| Barley ROW Ltd | Real estate | 2023 |
| Barleythorpe Store Limited | Wholesale & retail | 2022 |
| Barlow Blinds Limited | Manufacturing | 1962 |
| Barlow Brickwork Ltd | Construction | 2023 |
| Barn House Bakery Ltd | Wholesale & retail | 2020 |
| Barnal Investments Ltd | Real estate | 2019 |
| Barnet Zinc Limited | Information & communication | 2020 |
| Barnett & Shaw (Sheetmetal) Limited | Manufacturing | 2005 |
| Barnett Consulting Ltd | Administrative & support | 2020 |
| Barnhaus Design & Planning Limited | Professional & scientific | 2025 |
| Barnhill School Services Limited | Construction | 1998 |
| Barnoldby Acclaimed Ltd | Hospitality | 2015 |
| Barnsdale Financial Management Limited | Professional & scientific | 2015 |
| Barnsdale in Rutland Group Ownership Management Co. Limited | Households | 1988 |
| Barnsdale in Rutland Limited | Professional & scientific | 1982 |
| Barnsley Accident Repair Centre Limited | Wholesale & retail | 2019 |
| Barnstaple Properties Ltd | Real estate | 2021 |
| Barnstaple Trading Ltd | Transport & logistics | 2014 |
| Barnwell-Thornton Property Limited | Water & waste | 2016 |
| Baron Electrical Commissioning Engineers Ltd | Professional & scientific | 2025 |
| Barons Park Nursing Home Limited | Health & social care | 1993 |
| Baronscraig Holiday Lets Ltd | Real estate | 2026 |
| Baroque & Rose Ltd | Wholesale & retail | 2018 |
| Barot EYE Clinic Limited | Health & social care | 2009 |
| Barot Homes Limited | Real estate | 2019 |
| Barr Radcliffe Limited | Real estate | 2009 |
| BARR2148 Limited | Information & communication | 2023 |
| Barratt Close (Leicester) Management Company Limited | Households | 1996 |
| Barratt Smith & Brown DCA Limited | Other services | 2024 |
| Barratt Smith & Brown Limited | Professional & scientific | 2016 |
| Barreh Limited | Information & communication | 2023 |
| Barrel and TAP PUB Company Ltd | Hospitality | 2024 |
| Barrie Fairbairn Solicitors Limited | Professional & scientific | 2011 |
| Barrie Stephen Ashby Limited | Other services | 2009 |
| Barrie Stephen Hair Limited | Other services | 1999 |
| Barrie Stephen Holdings Limited | Financial services | 2012 |
| Barron Kirk Quality Care Limited | Health & social care | 1997 |
| Barrow Consultancy Ltd | Professional & scientific | 2024 |
| Barrow Legal Ltd | Professional & scientific | 2026 |
| Barrow Management Limited | Households | 2004 |
| Barrow Timber Station Limited | Wholesale & retail | 2020 |
| Barrow Upon Soar Pubs Ltd | Hospitality | 2019 |