| Birmingham Christian College | Education | 1988 |
| Birmingham Citizens Advice Bureau Service Limited | Information & communication | 1987 |
| Birmingham City College Limited | Education | 2004 |
| Birmingham City Enterprises Limited | Extraterritorial | 1998 |
| Birmingham City FC Foundation | Education | 2000 |
| Birmingham City Football Club Limited | Arts & recreation | 1888 |
| Birmingham City Garage Ltd | Professional & scientific | 2023 |
| Birmingham City Homes Ltd | Households | 2025 |
| Birmingham City Housing Ltd | Hospitality | 2021 |
| Birmingham City Mission | Health & social care | 1995 |
| Birmingham City Mortgages Ltd | Financial services | 2017 |
| Birmingham City Propco Limited | Real estate | 2017 |
| Birmingham City Stadium Ltd | Financial services | 2019 |
| Birmingham City Students' Union | Other services | 1997 |
| Birmingham City Suites Ltd | Real estate | 2024 |
| Birmingham City Transport Limited | Wholesale & retail | 2018 |
| Birmingham City Tyres Limited | Wholesale & retail | 2020 |
| Birmingham City Women Football Club Limited | Arts & recreation | 2012 |
| Birmingham Clean Energy Limited | Construction | 2022 |
| Birmingham Cleaning Services Ltd | Administrative & support | 2013 |
| Birmingham Climbing Wall Limited | Arts & recreation | 2005 |
| Birmingham CNC Machines Ltd | Manufacturing | 2020 |
| Birmingham Coach Hire Ltd | Transport & logistics | 2024 |
| Birmingham Cold Store Ltd | Hospitality | 2022 |
| Birmingham College for Humanitarian Studies Ltd | Education | 2021 |
| Birmingham College Limited | Education | 2005 |
| Birmingham College of Creative Arts Ltd | Education | 2025 |
| Birmingham College of Food Limited | Hospitality | 2026 |
| Birmingham Commercial Cooker Ltd | Manufacturing | 2020 |
| Birmingham Community Boxing Project CIC | Other services | 2023 |
| Birmingham Community Development Complex Ltd | Education | 2011 |
| Birmingham Community Empowerment Hub (Bceh) CIC | Education | 2025 |
| Birmingham Community Media Hub CIC | Information & communication | 2026 |
| Birmingham Community Support C.I.C. | Other services | 2025 |
| Birmingham Concrete Limited | Construction | 2015 |
| Birmingham Conservation Trust | Construction | 1997 |
| Birmingham Conservation Trust (Trading) Limited | Wholesale & retail | 1989 |
| Birmingham Construction (UK) Limited | Construction | 2013 |
| Birmingham Contemporary Music Group | Arts & recreation | 1989 |
| Birmingham Contractors Limited | Construction | 2020 |
| Birmingham Cooling Ltd | Energy | 2020 |
| Birmingham Corporate Travel Ltd | Transport & logistics | 2021 |
| Birmingham Council of Mosques (BCM) | Other services | 2017 |
| Birmingham Counselling Services Ltd | Health & social care | 2016 |
| Birmingham County Football Association Limited | Arts & recreation | 1999 |
| Birmingham Courier and Haulage Services Ltd | Transport & logistics | 2025 |
| Birmingham Crane Hire Co. Limited | Construction | 1981 |
| Birmingham Crisis Centre | Health & social care | 1988 |
| Birmingham Culture and Language School CIC | Education | 2018 |
| Birmingham Dance Network C.I.C. | Arts & recreation | 2017 |
| Birmingham Design Ltd | Other services | 2017 |
| Birmingham Desserts Ltd | Hospitality | 2025 |
| Birmingham Development Group Limited | Real estate | 2017 |
| Birmingham Diabetes Healthcare Ltd | Health & social care | 2015 |
| Birmingham Diagnostics Ltd | Wholesale & retail | 2020 |
| Birmingham Diamond Nails Limited | Other services | 2023 |
| Birmingham Diocesan Board of Finance (the) | Other services | 1947 |
| Birmingham Diocesan Multi-Academy Trust | Education | 2017 |
| Birmingham Direct Ltd | Wholesale & retail | 2026 |
| Birmingham Disability Resource Centre | Health & social care | 1994 |
| Birmingham Dog Grooming Academy Ltd | Wholesale & retail | 2025 |
| Birmingham Drain Jetting Limited | Water & waste | 2023 |
| Birmingham DRY Fruits and Nuts Ltd | Wholesale & retail | 2025 |
| Birmingham Dwellings Limited | Real estate | 2000 |
| Birmingham Eastside Properties Ltd | Real estate | 2020 |
| Birmingham Education and Training Agency Limited | Education | 1996 |
| Birmingham Education Consultants Limited | Manufacturing | 2002 |
| Birmingham Education Partnership Limited | Education | 2014 |
| Birmingham EGG Marketing Limited | Wholesale & retail | 1975 |
| Birmingham Electrical Co. (Bullring) Limited | Other services | 1959 |
| Birmingham Electrical Control Ltd | Construction | 2019 |
| Birmingham Electrical Training Group Limited | Extraterritorial | 2005 |
| Birmingham Electrical Training Ltd | Education | 1991 |
| Birmingham Emergency Glazing Limited | Construction | 2010 |
| Birmingham Empire Ltd | Other services | 2018 |
| Birmingham Endeavour Limited | Financial services | 2016 |
| Birmingham Endocrine Clinic Limited | Health & social care | 2014 |
| Birmingham Energy and Development Network CIC | Professional & scientific | 2025 |
| Birmingham Energy Ltd | Construction | 2025 |
| Birmingham Enterprise Ltd | Other services | 2025 |
| Birmingham Entertainment Limited | Arts & recreation | 2025 |
| Birmingham Estate Agency Limited | Real estate | 2014 |
| Birmingham Estates Group Limited | Real estate | 2023 |
| Birmingham Event Displays Ltd | Hospitality | 2024 |
| Birmingham Events Ltd | Professional & scientific | 2016 |
| Birmingham Executive Chauffeurs Ltd | Transport & logistics | 2025 |
| Birmingham Executive Transfers Ltd | Transport & logistics | 2026 |
| Birmingham Exhibitions Ltd | Administrative & support | 2024 |
| Birmingham EYE Care Ltd | Wholesale & retail | 2022 |
| Birmingham Fabrications Limited | Manufacturing | 2017 |
| Birmingham Family Carpet & Blinds Ltd | Wholesale & retail | 2023 |
| Birmingham Fashion Week Ltd | Arts & recreation | 2023 |
| Birmingham Fibre Ltd | Information & communication | 2013 |
| Birmingham Film Organisation Ltd | Arts & recreation | 2016 |
| Birmingham Fire & Safety Solutions Ltd | Professional & scientific | 2024 |
| Birmingham Fire and Safety Limited | Public administration | 2016 |
| Birmingham Foam Shop Ltd | Wholesale & retail | 2022 |
| Birmingham Folk CIC | Education | 2022 |
| Birmingham Food Court Ltd | Hospitality | 2017 |
| Birmingham Food Limited | Hospitality | 2025 |