| BIN Boss Inc Ltd | Administrative & support | 2014 |
| BIN Hafidh Ltd | Real estate | 2024 |
| BIN Knives Saves Lives Redbridge CIC | Professional & scientific | 2020 |
| BIN Mahfouz & Partners Ltd | Hospitality | 2019 |
| Bin-Ashraf Traders Ltd | Wholesale & retail | 2022 |
| Bin-Gone Limited | Water & waste | 2021 |
| Binafikir Ltd | Administrative & support | 2014 |
| Binaisha Ltd | Wholesale & retail | 2024 |
| Binary Labs Innovation Systems Ltd | Professional & scientific | 2025 |
| Binary Nation Limited | Information & communication | 2011 |
| Binary Star Limited | Information & communication | 1997 |
| Binarycorner Ltd | Information & communication | 2025 |
| Binate Check Services Ltd | Administrative & support | 2011 |
| Bincombe Park Residents Management Company Limited | Households | 2023 |
| Binex Group LP | | 2016 |
| Bing's Breakfast Limited | Hospitality | 2019 |
| Binge Enterprises Limited | Information & communication | 2017 |
| Bingham's Hair Salon Ltd | Other services | 2023 |
| Bini's Pharmaceutical Solutions Limited | Health & social care | 2024 |
| Binish Khan Limited | Wholesale & retail | 2025 |
| Bint AL Hind Ltd | Wholesale & retail | 2022 |
| Bintang Rizqi Limited | Wholesale & retail | 2025 |
| Binte Mehdi Ltd | Health & social care | 2023 |
| Binzhi Photography Ltd | Professional & scientific | 2026 |
| BIO Fires Online Ltd | Wholesale & retail | 2020 |
| BIO LAB Nutrition Ltd | Wholesale & retail | 2024 |
| Bioavexia Ltd | Manufacturing | 2016 |
| BIOCH4 Energy Limited | Professional & scientific | 2014 |
| Biochar Connect Ltd | Administrative & support | 2024 |
| Biocience Ltd | Professional & scientific | 2018 |
| Biodiversity Exchange Limited | Professional & scientific | 2023 |
| Biogreen Recycling Limited | Water & waste | 2012 |
| Biogreencleaningservice Ltd | Administrative & support | 2026 |
| Biohacking to Improve Everyone's Health Team Limited | Wholesale & retail | 2022 |
| Biolush Limited | Wholesale & retail | 2026 |
| Biometric Logistics Ltd | Transport & logistics | 2019 |
| Bionic Software Limited | Information & communication | 2025 |
| Bionutri Limited | Manufacturing | 1990 |
| Biopharmplus Ltd | Transport & logistics | 2019 |
| Bioskin Beauty Space Limited | Other services | 2024 |
| Biotera Health Ltd | Wholesale & retail | 2025 |
| Biotrex Ltd | Health & social care | 2025 |
| BIR (Holdings) Limited | Professional & scientific | 2005 |
| BIR Estates Ltd | Real estate | 2016 |
| BIR Group Investments Ltd | Financial services | 2022 |
| BIR Group Limited | Financial services | 2017 |
| BIR Ruma Limited | Wholesale & retail | 2025 |
| BIR Transport Limited | Construction | 2016 |
| Bir-Bal Properties Limited | Real estate | 1962 |
| Bira Direct Limited | Wholesale & retail | 1962 |
| Bira Holdings Limited | Administrative & support | 2018 |
| Bira Publishing Limited | Information & communication | 1963 |
| Bira Trading Limited | Administrative & support | 2018 |
| Birald Ltd | Professional & scientific | 2021 |
| Biran Associates Ltd | Information & communication | 2015 |
| Biraz Furnishings Ltd | Wholesale & retail | 2011 |
| Birbridge Limited | Information & communication | 2023 |
| Birbridge Sales Limited | Information & communication | 2023 |
| Birch & Sons Carpentry Ltd | Construction | 2024 |
| Birch Automotive Ltd | Wholesale & retail | 2024 |
| Birch Close Trading Ltd | Manufacturing | 2016 |
| Birch House Building Management Company Limited | Real estate | 2022 |
| Birch HR Ltd | Professional & scientific | 2016 |
| Birch Salvage Cars Limited | Wholesale & retail | 2026 |
| Birchco Group Limited | Other services | 2021 |
| Birchel Construction Ltd | Construction | 2024 |
| Birchfield Catering Limited | Hospitality | 2025 |
| Birchfield Developments Limited | Real estate | 1996 |
| Birchfield Family Butchers Limited | Wholesale & retail | 2021 |
| Birchfield Harriers Limited | Other services | 2026 |
| Birchfield Laundrette Ltd | Other services | 2017 |
| Birchfield Nursery Limited | Education | 2019 |
| Birchfield Restaurant Limited | Hospitality | 2025 |
| Birchfield Road Management Company Limited | Households | 2022 |
| Birchmore-Housing Ltd | Real estate | 2024 |
| Birchwood Property Limited | Real estate | 2016 |
| Birco Distribution Limited | Wholesale & retail | 2010 |
| Bird Mountain Therapy Ltd | Health & social care | 2024 |
| Bird's Aloe Vera Ltd | Wholesale & retail | 2026 |
| Birdbrook Limited | Real estate | 2021 |
| Birfield Limited | Extraterritorial | 1891 |
| Birk Properties Ltd | Real estate | 2016 |
| Birkdale Properties Limited | Construction | 2002 |
| Birkett Bogmats Limited | Administrative & support | 2014 |
| Birlic Holdings Ltd | Financial services | 2022 |
| Birmax Limited | Real estate | 2021 |
| Birmingham Metal Co Limited | Manufacturing | 1987 |
| Birmingham & Solihull Social Economy Consortium C.I.C. | Other services | 2012 |
| Birmingham & Solihull Women's AID | Hospitality | 1998 |
| Birmingham & Solihull Workbased Learning Provider Network Limited | Other services | 2006 |
| Birmingham & Staffordshire Carriages Ltd | Transport & logistics | 2010 |
| Birmingham (Kings Heath) Holdings Ltd | Hospitality | 2024 |
| Birmingham 0220 Ltd | Hospitality | 2017 |
| Birmingham 15 Ltd | Hospitality | 2023 |
| Birmingham Abodes Ltd | Real estate | 2025 |
| Birmingham Academy of Chinese Language and Culture Ltd | Education | 2021 |
| Birmingham Accountants Ltd | Professional & scientific | 2021 |
| Birmingham Advertising Limited | Professional & scientific | 2024 |
| Birmingham Air Conditioning Services Limited | Manufacturing | 2002 |
| Birmingham Air Filterations Ltd | Construction | 2011 |