| Blueprint Projects Leicester Ltd | Construction | 2020 |
| Blueray Taxis Ltd | Transport & logistics | 2023 |
| Blues Blinds & Interiors Ltd | Construction | 2017 |
| Bluesea Global Limited | Wholesale & retail | 2025 |
| Bluesky Lease Ltd | Real estate | 2025 |
| Bluesky Purify Water Ltd | Manufacturing | 2025 |
| Bluespot Direct Ltd | Manufacturing | 2015 |
| Bluestar East Ltd | Wholesale & retail | 2025 |
| Bluestone Catering Solutions Limited | Construction | 2004 |
| Bluestone EOT Limited | Construction | 2024 |
| Bluestone Innovations Limited | Wholesale & retail | 2024 |
| Bluestone Management Consulting Limited | Information & communication | 2018 |
| Bluestone Thorn Ltd | Wholesale & retail | 2025 |
| Bluesubmarine Ltd | Professional & scientific | 2014 |
| Bluethorn Limited | Financial services | 2005 |
| Blueticks Chauffeurs Ltd | Transport & logistics | 2024 |
| Bluewater Advisory Limited | Professional & scientific | 2023 |
| Bluewater Finance Limited | Administrative & support | 2023 |
| Bluewood Recruitment Ltd | Administrative & support | 2009 |
| Blueworld Global Ltd | Wholesale & retail | 2026 |
| Bluffhill Temby Healthcare Ltd | Health & social care | 2019 |
| Bluulabs Limited | Information & communication | 2018 |
| Bluurr County Limited | Administrative & support | 2024 |
| Bluwbee Ltd | Information & communication | 2018 |
| Blyth Limited | Wholesale & retail | 1986 |
| Blyton Ackers Ltd | Wholesale & retail | 2025 |
| BM Automotive Services Ltd | Wholesale & retail | 2026 |
| BM Care Management Solutions Ltd | Health & social care | 2012 |
| BM Electrical Maintenance Ltd | Manufacturing | 2025 |
| BM Fashions Limited | Wholesale & retail | 2013 |
| BM Joof Ltd | Transport & logistics | 2020 |
| BM Property Ltd | Real estate | 2014 |
| BM Reporting Ltd | Health & social care | 2018 |
| BM Transportation Ltd | Transport & logistics | 2023 |
| BMB Accountancy Services Ltd | Professional & scientific | 2025 |
| BMB Transport Ltd | Transport & logistics | 2026 |
| BMC Haulage (Birmingham) Limited | Transport & logistics | 2010 |
| BMC Services Leicester Ltd | Wholesale & retail | 2024 |
| BMCONNECT1994 Ltd | Transport & logistics | 2025 |
| BMD Crushing Ltd | Other services | 2025 |
| BMH Logistics Limited | Transport & logistics | 2025 |
| BMP Enterprise Ltd | Wholesale & retail | 2022 |
| BMP Group (Leicester) Limited | Financial services | 2023 |
| BMP Healthcare Ltd | Wholesale & retail | 2012 |
| BMP Holdings (Leicester) Ltd | Wholesale & retail | 2020 |
| BMP Properties (Leicester) Ltd | Real estate | 2022 |
| Bmrd Investments Ltd | Construction | 2019 |
| BMS Construction Limited | Construction | 2015 |
| Bmtr Investments Limited | Real estate | 2022 |
| Bmzserviceuk Limited | Manufacturing | 2018 |
| BN Transporter Ltd | Transport & logistics | 2021 |
| Bnbflips Ltd | Real estate | 2025 |
| BND Rental Ltd | Real estate | 2024 |
| BNH Properties Ltd | Real estate | 2025 |
| BNT Automotive Limited | Wholesale & retail | 2023 |
| BO Selecta Income Protecta Ltd | Financial services | 2024 |
| Boardroom Excellence Limited | Information & communication | 2005 |
| Boards 4 Agents Ltd | Professional & scientific | 2011 |
| Boathouse 2017 Limited | Professional & scientific | 2012 |
| Boathouse Consulting Ltd | Professional & scientific | 2025 |
| BOB Gerard Holdings Limited | Financial services | 2021 |
| BOB Hargreaves Limited | Construction | 1973 |
| BOB Labels Ltd | Manufacturing | 2019 |
| BOB Wain Cleaners (Leicester) Limited | Administrative & support | 2011 |
| BOB Wain Cleaners Limited | Administrative & support | 2001 |
| Bobat Brothers Ltd | Real estate | 2024 |
| Bobble Software Limited | Information & communication | 2021 |
| Bobby Dhanjal Estate Agents Limited | Real estate | 2014 |
| Bobby Muscan Builders Ltd | Construction | 2024 |
| Bobby Vapes Ltd | Wholesale & retail | 2025 |
| Bobert Car Body Repairs Ltd | Wholesale & retail | 2019 |
| Bobo Ltd | Transport & logistics | 2026 |
| Bobrock Properties Limited | Real estate | 2024 |
| Bobu Ltd | Manufacturing | 2018 |
| Bocombe Transport Ltd | Transport & logistics | 2014 |
| Bodag Ltd | Construction | 2026 |
| Bode Capital Ltd | Real estate | 2025 |
| Bode Contracting Ltd | Construction | 2020 |
| Bode Dwellings Ltd | Real estate | 2022 |
| Boden Samuel Wills & Trusts Ltd | Administrative & support | 2022 |
| Bodi Designs London Ltd | Wholesale & retail | 2013 |
| Bodies CLO Ltd | Wholesale & retail | 2022 |
| Bodileys of Northampton Limited | Wholesale & retail | 2001 |
| Bodrum Turkish BBQ 786 Ltd | Hospitality | 2025 |
| Bodrum Turkish BBQ Periperi Ltd | Hospitality | 2024 |
| Bodsayage Ltd. | Wholesale & retail | 2025 |
| Bodsmore Limited | Health & social care | 2010 |
| Body + Beauty Care Ltd | Wholesale & retail | 2019 |
| Body Beautiful Ltd | Other services | 2026 |
| Body Development Centre Limited | Other services | 2024 |
| Body Mart Ltd | Wholesale & retail | 2019 |
| Body Organics Limited | Wholesale & retail | 2017 |
| Bodycot Bookkeeping Ltd | Professional & scientific | 2026 |
| Bodycote Homes Ltd | Real estate | 2026 |
| Bodygloss Ltd | Hospitality | 2026 |
| Bodymedcare Limited | Health & social care | 2024 |
| Bodypower Fitness Limited | Wholesale & retail | 2023 |
| Bodyworks Beauty Salon Ltd | Health & social care | 2012 |
| Bodyworks Physiotherapy & Pilates Ltd | Health & social care | 2019 |
| Boen Group Ltd Ltd | Wholesale & retail | 2025 |