| Balavagh Investments | Financial services | 2014 |
| Balbin Properties Ltd | Real estate | 2016 |
| Balboa Properties Limited | Real estate | 2026 |
| Balcanic Production Limited | Wholesale & retail | 2016 |
| Balco Engineering Limited | Manufacturing | 1979 |
| Balderton Rise Residents Management Company Limited | Households | 2025 |
| Baldev Logistics Ltd | Transport & logistics | 2022 |
| Baldev Singh Ltd | Construction | 2020 |
| Baldwin Consulting Ltd | Administrative & support | 2013 |
| Baldwins Care Ltd | Health & social care | 2024 |
| Baldwins Installations Ltd | Manufacturing | 2024 |
| Baldwins Properties Limited | Real estate | 2005 |
| Baldwins Property Investment Limited | Real estate | 2021 |
| Balega Medical Ltd | Administrative & support | 2019 |
| Balemore Limited | Wholesale & retail | 2018 |
| Baleza Fashions Ltd | Wholesale & retail | 2019 |
| Balfor Group Limited | Administrative & support | 2016 |
| Balfour Investments Limited | Real estate | 2025 |
| Balfour Rhodes Limited | Professional & scientific | 2014 |
| Balgar Limited | Information & communication | 2025 |
| Bali Financial Services Ltd | Professional & scientific | 2019 |
| Bali Property Services Ltd | Real estate | 2025 |
| Baligow Consulting Ltd | Professional & scientific | 2016 |
| Baljeet Kaur Ltd | Other services | 2020 |
| Baljit Superstore Ltd | Wholesale & retail | 2024 |
| Balkan Lettings Ltd. | Real estate | 2015 |
| Balkan Property Maintenance Ltd | Construction | 2020 |
| Balkan Sisters Ltd | Hospitality | 2026 |
| Balkar & Sons Limited | Wholesale & retail | 2009 |
| Balkrishn Ltd | Health & social care | 2026 |
| Ball Mill Sand and Gravel Company Limited | Extraterritorial | 1949 |
| Balla Barbers Ltd | Other services | 2025 |
| Ballachulish Verte Wholesale Trade Limited | Wholesale & retail | 2021 |
| Ballaggan Limited | Real estate | 2020 |
| Ballentine (2024) Ltd | Real estate | 2024 |
| Ballentine Properties Ltd | Real estate | 2004 |
| Baller Boys Club Ltd | Wholesale & retail | 2024 |
| Baller Junction Ltd | Professional & scientific | 2025 |
| Ballers and Haulers Ltd | Transport & logistics | 2026 |
| Ballers Padel Club Ltd | Arts & recreation | 2025 |
| Ballers Sports Management Consultancy Ltd | Professional & scientific | 2015 |
| Ballet Britain Ltd | Arts & recreation | 2022 |
| Ballet on Demand Ltd | Other services | 2022 |
| Balloon Avenue Ltd | Wholesale & retail | 2024 |
| Balloon Events (Birmingham) Ltd | Other services | 2021 |
| Ballup C.I.C. | Education | 2026 |
| Ballyhoo Limited | Information & communication | 2009 |
| Ballymoe Group Ltd | Construction | 2026 |
| Ballymore Networks Limited | Information & communication | 2007 |
| Ballymore Snowhill Management Company Limited | Real estate | 2013 |
| Ballymoss Ltd | Information & communication | 2018 |
| Ballyvoy Construction Limited | Construction | 2026 |
| Balm of Gilead Limited | Health & social care | 2020 |
| Balm of Gilead Ventures Ltd. | Health & social care | 2010 |
| Balmoral Gardens (Southport) Management Company Limited | Real estate | 2021 |
| Balmoral Housing Limited | Real estate | 2023 |
| Balmoral Properties Limited | Real estate | 2011 |
| Balmoral Tiling Contractors Limited | Construction | 2001 |
| Baloch Logistics Limited | Transport & logistics | 2025 |
| Balot Housing Limited | Real estate | 2008 |
| Balot Properties Ltd | Real estate | 2021 |
| Balrach Limited | Real estate | 1982 |
| Balsall Heath Foods Limited | Hospitality | 2024 |
| Balsall Limited | Hospitality | 2023 |
| Balstreet Limited | Wholesale & retail | 2019 |
| Balta Construction Ltd | Construction | 2022 |
| Baltariu Gheorghe Ltd | Transport & logistics | 2019 |
| Balti 2000 Ltd | Hospitality | 2014 |
| Balti Bites Birmingham Ltd | Hospitality | 2025 |
| Balti Brum Ltd | Hospitality | 2026 |
| Balti Express and Marios Pizza Limited | Hospitality | 2018 |
| Balti HUT B14 Ltd | Hospitality | 2019 |
| Balti K Restaurant & Takeaway Limited | Hospitality | 2023 |
| Balti RAJ Yardley Limited | Hospitality | 2018 |
| Balti Restaurant Limited | Hospitality | 2022 |
| Balti Spice (Birmingham) Ltd | Hospitality | 2018 |
| Baltic Control International Limited | Administrative & support | 1995 |
| Balu Travel Limited | Administrative & support | 2009 |
| Balustrade Components UK Limited | Manufacturing | 2015 |
| Balustrade Glass Limited | Extraterritorial | 2014 |
| Balvir Kaur Access to Therapy and Independence Ltd | Health & social care | 2021 |
| Balwinder Properties Ltd | Real estate | 2026 |
| Bal’S Properties Ltd | Real estate | 2025 |
| BAM Bargains Ltd | Wholesale & retail | 2023 |
| Bama-Ol Services Limited | Professional & scientific | 2025 |
| Bamalam Productions C.I.C. | Information & communication | 2019 |
| Bambams Nursery Ltd | Health & social care | 2014 |
| Bambar Ltd | Manufacturing | 2021 |
| Bambi Air Limited | Manufacturing | 2018 |
| Bambino Trading Limited | Wholesale & retail | 2024 |
| Bambinos Play CIC | Education | 2024 |
| Bamboo Bliss Mangement Ltd | Professional & scientific | 2025 |
| Bamboo Garden(Winford) Limited | Hospitality | 2014 |
| Bamboo Hair and Aesthetic Ltd | Other services | 2020 |
| Bamboo Property Holdings Ltd | Real estate | 2021 |
| Bamboobless Ltd | Wholesale & retail | 2025 |
| Bamboomon TCG Cards Ltd | Wholesale & retail | 2026 |
| Bambudda Darlington Ltd | Hospitality | 2021 |
| BAMBUDDA88 Ltd | Hospitality | 2024 |
| Bamcross Limited | Households | 1990 |