| Blxck Paper Ltd | Real estate | 2022 |
| Blydan Developments Limited | Construction | 2024 |
| Blyth Associates Limited | Health & social care | 2010 |
| Blythe Construction Services Ltd | Construction | 2022 |
| Blythe Electrical (Warwickshire) Ltd | Construction | 2014 |
| Blythe Healthcare Solutions Limited | Education | 2020 |
| Blythe Homes Limited | Real estate | 2019 |
| Blythe House Solar Farm Limited | Energy | 2020 |
| Blythe Tech Ltd | Information & communication | 2025 |
| Blythe Valley (Parcel R Apartments) Residents Management Company Limited | Households | 2022 |
| BM Barber Shop Ltd | Other services | 2023 |
| BM Bats Limited | Manufacturing | 2026 |
| BM Capital Estates Ltd | Real estate | 2024 |
| BM Consulting Engineers Limited | Administrative & support | 2021 |
| BM Dyslexia Consultancy Ltd | Health & social care | 2016 |
| BM Guide Ltd | Households | 2023 |
| BM Guide One Ltd | Real estate | 2023 |
| BM Guide Two Ltd | Real estate | 2024 |
| BM Innovations Ltd | Wholesale & retail | 2023 |
| BM Locksmiths (Holdings) Ltd | Financial services | 2020 |
| BM Mcgill Carpenters Ltd | Construction | 2006 |
| BM Multi Corp Ltd | Financial services | 2023 |
| BM Orthopaedic Ltd | Health & social care | 2023 |
| BM Recovery & Mobile Tyre Services Ltd | Transport & logistics | 2024 |
| BM Recruitment Services Limited | Administrative & support | 2023 |
| BM Safe Storage Limited | Transport & logistics | 2025 |
| BM Vision Deco Ltd | Construction | 2025 |
| Bm's Automotive and Coding Ltd | Wholesale & retail | 2021 |
| BM3 Architecture Limited | Professional & scientific | 1997 |
| BM3 Birmingham Limited | Professional & scientific | 2021 |
| BM3 Group Limited | Financial services | 2021 |
| BM3 London Limited | Professional & scientific | 2021 |
| BM3 Services Limited | Administrative & support | 2021 |
| BMA Mgmt Ltd | Professional & scientific | 2019 |
| Bmajestic Ltd | Health & social care | 2019 |
| Bmak Ltd | Education | 2022 |
| BMB Builders Merchants Limited | Professional & scientific | 1932 |
| BMB Music Ltd | Information & communication | 2024 |
| BMB Structural Steelwork Ltd | Manufacturing | 1992 |
| Bmbq Limited | | 2010 |
| BMC Holdings Ltd | Financial services | 2015 |
| BMC Tyres Ltd | Wholesale & retail | 2013 |
| Bmcoding Ltd | Wholesale & retail | 2023 |
| BMD Pipefitting and Steel Fabrication Ltd | Construction | 2017 |
| BMD TAG Consulting Limited | Information & communication | 2015 |
| BME United Heritage, Arts & Culture C.I.C. | Education | 2018 |
| BMG Design & Build Contractors Limited | Construction | 2024 |
| BMH Trading Limited | Other services | 2018 |
| Bmhe Limited | Financial services | 2019 |
| BMI (Solihull) Ltd | Real estate | 2024 |
| BMJ Auto Repair and Recovery Limited | Professional & scientific | 2024 |
| BMJ Groups Solutions Ltd | Education | 2017 |
| Bmjervis Limited | Real estate | 2022 |
| BMM Builders Limited | Construction | 2015 |
| BMN BG Ltd | Construction | 2025 |
| BMN Ltd | Construction | 2017 |
| BMR (Midlands) Limited | Wholesale & retail | 2022 |
| Bmrdesign Ltd | Professional & scientific | 2026 |
| BMS Birmingham Ltd | Construction | 2024 |
| BMS Broadcast Limited | Information & communication | 2012 |
| BMS Controls Systems Ltd | Extraterritorial | 2019 |
| BMS Land Development Limited | Construction | 2003 |
| BMT Glass & Glazing Limited | Construction | 2018 |
| BMT Misted Units Limited | Construction | 2018 |
| BMT Sealed Units Limited | Construction | 2006 |
| Bmtr Holdings Limited | Financial services | 2020 |
| Bmtr Limited | Financial services | 2017 |
| BMV Solicitors Limited | Professional & scientific | 2013 |
| BMW Credit Limited | Professional & scientific | 1933 |
| BMX 2 Limited | Real estate | 2021 |
| BMZ International Trading Ltd | Transport & logistics | 2018 |
| BN Estates Limited | Real estate | 2007 |
| BN Bargains Ltd | Wholesale & retail | 2026 |
| BN Courier Ltd | Transport & logistics | 2025 |
| BN Europe Limited | Wholesale & retail | 2014 |
| BN Tax Services Ltd | Professional & scientific | 2019 |
| BN1 Fashion Ltd | Wholesale & retail | 2024 |
| BN3D Ltd | Information & communication | 2025 |
| BNA TEQ Solutions Ltd | Professional & scientific | 2019 |
| Bnaquk Ltd | Wholesale & retail | 2023 |
| Bnatural Protectives & Co Ltd | Other services | 2025 |
| BNB Global Limited | Wholesale & retail | 2025 |
| BNB Housekeeping Ltd | Administrative & support | 2023 |
| BNB Joinery Limited | Manufacturing | 2018 |
| Bnbliving Ltd. | Real estate | 2017 |
| BNC Europe Ltd | Manufacturing | 2018 |
| BNG Professional Services Limited | Professional & scientific | 2014 |
| Bnguk Limited | Wholesale & retail | 2023 |
| BNI Computers & Cells Ltd | Wholesale & retail | 2021 |
| BNK Fire Limited | Real estate | 2022 |
| BNK Jevington LLP | | 2011 |
| BNK Properties Limited | Real estate | 1997 |
| BNM Transport Limited | Transport & logistics | 2014 |
| BNQ Enterprise Limited | Wholesale & retail | 2025 |
| BNS Facilities Management Limited | Administrative & support | 2025 |
| BNS Selly Oak Limited | Hospitality | 2023 |
| BNS Transport Services Ltd | Transport & logistics | 2021 |
| BNT Accounts Ltd | Professional & scientific | 2018 |
| BNY Investment Ltd | Financial services | 2025 |
| Bnyes Limited | Health & social care | 2023 |