| Birmingham Airport (Finance) PLC | Financial services | 2000 |
| Birmingham Airport Air Traffic Limited | Transport & logistics | 2012 |
| Birmingham Airport Cars Ltd | Transport & logistics | 2023 |
| Birmingham Airport Developments Limited | Construction | 1988 |
| Birmingham Airport Holdings Limited | Professional & scientific | 1997 |
| Birmingham Airport Hotels Ltd | Hospitality | 2020 |
| Birmingham Airport Limited | Transport & logistics | 1986 |
| Birmingham Airport Operations Limited | Professional & scientific | 2015 |
| Birmingham Airport Pension Trustees Limited | Financial services | 2013 |
| Birmingham Airport Services Limited | Transport & logistics | 2012 |
| Birmingham Airport Transfers Ltd | Transport & logistics | 2023 |
| Birmingham Albanian Muslim Community C.I.C. | Education | 2024 |
| Birmingham Albion Football Club Ltd | Arts & recreation | 2025 |
| Birmingham Aluminium Limited | Extraterritorial | 2014 |
| Birmingham Aluminium Systems (BAS) Ltd | Manufacturing | 2020 |
| Birmingham AM2 Limited | Extraterritorial | 2017 |
| Birmingham Anaesthesia and Intensive Care Services LLP | | 2023 |
| Birmingham and Blackburn Construction Company Limited(The) | | 1937 |
| Birmingham and District General Practitioner Emergency Room Limited | Health & social care | 1996 |
| Birmingham and West Midlands Health Limited | Health & social care | 2004 |
| Birmingham Artisan Markets CIC | Wholesale & retail | 2024 |
| Birmingham Arts Foundation | Arts & recreation | 2014 |
| Birmingham Artspace Ltd | Arts & recreation | 1991 |
| Birmingham Asian Resource Centre | Health & social care | 2002 |
| Birmingham Association for Mental Health(The) | Health & social care | 1986 |
| Birmingham Association of Youth Clubs | Other services | 2002 |
| Birmingham Audio Visuals Ltd | Information & communication | 2022 |
| Birmingham Auto Centre Limited | Wholesale & retail | 2021 |
| Birmingham Auto Services Ltd | Wholesale & retail | 2024 |
| Birmingham Autogas Limited | Wholesale & retail | 2005 |
| Birmingham Autohub Ltd | Wholesale & retail | 2026 |
| Birmingham Autos Ltd | Administrative & support | 2017 |
| Birmingham Bangla Mela CIC | Education | 2025 |
| Birmingham Bangla TV Limited | Professional & scientific | 2024 |
| Birmingham Barbers Ltd | Other services | 2014 |
| Birmingham Bathroom Warehouse Limited | Administrative & support | 2010 |
| Birmingham Bears Elite Basketball CIC | Arts & recreation | 2024 |
| Birmingham Bike Agency Ltd | Transport & logistics | 2012 |
| Birmingham Biomat Ltd | Manufacturing | 2025 |
| Birmingham Biotech Ltd | Manufacturing | 2020 |
| Birmingham Bizarre Bazaar Online Marketplace Ltd | Wholesale & retail | 2026 |
| Birmingham Blinds Limited | Manufacturing | 2000 |
| Birmingham Bodywork Ltd | Wholesale & retail | 2025 |
| Birmingham Bondhu Mahal Ltd | Other services | 2025 |
| Birmingham Botanical and Horticultural Society Limited | Arts & recreation | 1930 |
| Birmingham Botanical Gardens (Enterprises) Limited | Wholesale & retail | 1984 |
| Birmingham Bouncers CIC | Arts & recreation | 2019 |
| Birmingham Bowel Clinic Limited | Health & social care | 2006 |
| Birmingham Boxworks Management Company Limited | Real estate | 2020 |
| Birmingham Brewing Company Limited | Manufacturing | 2016 |
| Birmingham BTL Investments Ltd | Real estate | 2025 |
| Birmingham Builders Limited | Construction | 2024 |
| Birmingham Building Construction Ltd | Construction | 2025 |
| Birmingham Building Renovations Ltd | Construction | 2023 |
| Birmingham Building Surveying Ltd | Professional & scientific | 2025 |
| Birmingham Bulls Kabaddi Limited | Arts & recreation | 2022 |
| Birmingham Bulls RFC Ltd | Arts & recreation | 2021 |
| Birmingham Business Associate Ltd | Other services | 2009 |
| Birmingham Business Centre Limited | Real estate | 2018 |
| Birmingham Business Innovators Hub Limited | Professional & scientific | 2018 |
| Birmingham Business Park (Plots 6110-6160) Management Company Limited | Real estate | 2007 |
| Birmingham Business Supplies Limited | Wholesale & retail | 1973 |
| Birmingham Busworks Limited | Manufacturing | 2021 |
| Birmingham C.O.C. Pension Fund Trustee Company Limited(The) | Extraterritorial | 1950 |
| Birmingham Cafe House Ltd | Hospitality | 2022 |
| Birmingham Car Body Repair Ltd | Wholesale & retail | 2019 |
| Birmingham Car Hire Limited | Administrative & support | 2022 |
| Birmingham Car Hospital & Care Limited | Wholesale & retail | 2025 |
| Birmingham Car Importer Ltd | Wholesale & retail | 2024 |
| Birmingham Car Keys Ltd | Wholesale & retail | 2022 |
| Birmingham Car Sale & Repair Limited | Wholesale & retail | 2018 |
| Birmingham Car Trade Ltd | Wholesale & retail | 2020 |
| Birmingham Care Services Ltd | Health & social care | 2013 |
| Birmingham Carers Ltd | Construction | 2022 |
| Birmingham Cargo Ltd | Transport & logistics | 2024 |
| Birmingham Carpet & Flooring Gallery Limited | Wholesale & retail | 2011 |
| Birmingham Cars Ltd | Wholesale & retail | 2019 |
| Birmingham Cash Registers Limited | Information & communication | 1981 |
| Birmingham Caterers Limited | Hospitality | 2020 |
| Birmingham Catering Equipment Limited | Manufacturing | 1993 |
| Birmingham Central Aesthetics Ltd | Other services | 2021 |
| Birmingham Central Kitchen Limited | Manufacturing | 2026 |
| Birmingham Central Ventures Ltd | Hospitality | 2022 |
| Birmingham Centre for Abdominal and Digestive Health LLP | | 2021 |
| Birmingham Centre for Arts Therapies | Health & social care | 2005 |
| Birmingham Centre for Cancer and Genomic Medicine LLP | | 2022 |
| Birmingham Centre for Women's Health LLP | | 2021 |
| Birmingham Chamber of Commerce and Industry | Other services | 1903 |
| Birmingham Charcoal Ltd | Wholesale & retail | 2025 |
| Birmingham Chauffeur Car Hire Ltd | Transport & logistics | 2025 |
| Birmingham Children's Hospital Health Services Limited | Health & social care | 2012 |
| Birmingham Children's Hospital Pharmacy Limited | Health & social care | 2012 |
| Birmingham Children's Trust Community Interest Company | Public administration | 2017 |
| Birmingham Children'Scommunity Venture Limited(The) | Hospitality | 1969 |
| Birmingham Chinatown Business Association | Other services | 2023 |
| Birmingham Chinese Medicine Ltd | Wholesale & retail | 2022 |
| Birmingham Chinese Youth Centre | Arts & recreation | 1998 |
| Birmingham Chiro Clinic Limited | Health & social care | 2024 |
| Birmingham Chiropractic Clinic | Health & social care | 2010 |
| Birmingham Chiropractic Limited | Health & social care | 2019 |