| Brown Roofing (Midlands) Limited | Construction | 1993 |
| Brown Therapist Network Ltd | Health & social care | 2025 |
| Brown, R. a. Design Ltd | Professional & scientific | 2018 |
| Brownfields Development Company Limited | Construction | 2002 |
| Brownhills Foods Ltd | Hospitality | 2024 |
| Brownie Fusion X Limited | Hospitality | 2024 |
| Brownieworld Limited | Extraterritorial | 2021 |
| Brownlow Farnell Tutoring LLP | | 2019 |
| Browns Lets Limited | Real estate | 2018 |
| Browns of Harborne Ltd | Wholesale & retail | 2023 |
| BROWNS66 Limited | Health & social care | 2024 |
| Browser Team Ltd | Information & communication | 2016 |
| Browsergames Forum Limited | Administrative & support | 2008 |
| Browsify Limited | Information & communication | 2022 |
| Browzitz Limited | Information & communication | 2025 |
| Brox Road (Ottershaw) Residents Management Company Limited | Households | 2023 |
| Broximo Ltd | Wholesale & retail | 2020 |
| Broxton Valeting Centre Ltd | Administrative & support | 2024 |
| Broyonie Developments Limited | Construction | 2017 |
| Broz Burg Limited | Hospitality | 2026 |
| BRP Private Ltd | Wholesale & retail | 2021 |
| BRP T1 Birmingham (Management Company) Limited | Households | 2018 |
| BRP T2 Birmingham (Management Company) Limited | Households | 2019 |
| BRS Impex Ltd | Wholesale & retail | 2025 |
| BRS Management Services Ltd. | Administrative & support | 2014 |
| Bruce Dunn Ltd. | Construction | 2013 |
| Brucelee.Co.Uk Ltd | Other services | 2016 |
| Brue Farm Management Company Limited | Households | 2020 |
| Bruford Arms Limited | Hospitality | 2016 |
| Bruiserweight Ltd | Arts & recreation | 2018 |
| Brukshine Property Services Ltd | Administrative & support | 2026 |
| Brulée Beauty Ltd | Wholesale & retail | 2022 |
| Brum Cafe Ltd | Hospitality | 2026 |
| Brum Carpet Cleaning Ltd | Administrative & support | 2026 |
| Brum Couriers Ltd | Transport & logistics | 2026 |
| Brum Driving School Ltd | Education | 2017 |
| Brum Eats Ltd | Information & communication | 2025 |
| Brum Enterprises Limited | Professional & scientific | 2015 |
| Brum Facilities Management Ltd | Hospitality | 2026 |
| Brum Global Fusion Ltd | Hospitality | 2025 |
| Brum Heating & Plumbing Ltd | Construction | 2024 |
| Brum Housing Ltd | Real estate | 2025 |
| Brum Life Ltd | Information & communication | 2025 |
| Brum Logistic Ltd | Transport & logistics | 2025 |
| Brum Maintenance Ltd | Construction | 2026 |
| Brum Office Holdings Ltd | Financial services | 2023 |
| Brum Office Limited | Real estate | 2013 |
| Brum Oral Surgery Limited | Health & social care | 2019 |
| Brum Pack Ltd | Extraterritorial | 2015 |
| Brum Property Ltd | Real estate | 2020 |
| Brum Store Ltd | Wholesale & retail | 2026 |
| Brum TAP (South) Ltd | Hospitality | 2025 |
| Brumball Ltd | Arts & recreation | 2019 |
| Brumbay Ltd | Wholesale & retail | 2025 |
| Brumcom Ltd | Wholesale & retail | 2023 |
| Brumden Ltd | Information & communication | 2025 |
| Brume London Ltd | Manufacturing | 2026 |
| Brumhelp Ltd | Information & communication | 2026 |
| Brumlettings Ltd | Real estate | 2024 |
| Brumliving Ltd | Real estate | 2024 |
| Brummie & Brew Co Ltd | Manufacturing | 2023 |
| Brummies Taxis Ltd | Transport & logistics | 2016 |
| Brumside Radio CIC | Information & communication | 2020 |
| Brumstamp Limited | Wholesale & retail | 2003 |
| Brumstay (UK) Ltd | Real estate | 2020 |
| Brumyodo Community Interest Company | Education | 2018 |
| Brumz Kitchens & Bedrooms Ltd | Manufacturing | 2025 |
| Brumz Tiling Ltd | Construction | 2026 |
| Brumzone Ltd | Wholesale & retail | 2025 |
| Brunch Munch Ltd | Hospitality | 2023 |
| Brunel Housing Ltd | Real estate | 2026 |
| Brunel Housing Services Ltd | Professional & scientific | 2012 |
| Bruneval Consulting Limited | Professional & scientific | 2020 |
| Bruno Logistics Limited | Transport & logistics | 2025 |
| Brush Holdings Limited | Professional & scientific | 1920 |
| Brush&Rollers Decorators Ltd | Construction | 2025 |
| Brushed Decor Ltd | Construction | 2024 |
| Brushstrokes by KAM Ltd | Health & social care | 2025 |
| Brushware (U.K.) Limited | Manufacturing | 1985 |
| Brushware Holdings Limited | Financial services | 2020 |
| Brutal by Brutal Ltd | Wholesale & retail | 2025 |
| Bruumi Ltd | Financial services | 2023 |
| Bruvahud Ltd | Wholesale & retail | 2022 |
| Bruwks Solutions Limited | Information & communication | 2024 |
| Bruxleys Limited | Real estate | 2022 |
| Bruxleys Maintenance Limited | Construction | 2023 |
| BRV Protect Limited | Administrative & support | 2025 |
| Bryan Distribution Ltd | Wholesale & retail | 2025 |
| Bryanworth Ltd | Professional & scientific | 2018 |
| Brycrest Limited | Transport & logistics | 1969 |
| Bryghtino Computer Consulting Limited | Other services | 2015 |
| Brylands Limited | Real estate | 1986 |
| Brylock Innovations Limited | Professional & scientific | 1995 |
| Bryn Castell Residents Management Company Limited | Households | 2025 |
| Bryn Y More Investments Limited | Wholesale & retail | 2003 |
| Bryony House Limited | Other services | 1955 |
| Bryophyte Consulting Limited | Information & communication | 2025 |
| Bryt Energy Limited | Energy | 2016 |
| Bryt Energy Storage Limited | Construction | 2017 |
| Bryt Oral Care Ltd | Health & social care | 2021 |