| Birmingham Selective Management Ltd | Households | 2023 |
| Birmingham Services Solutions Limited | Other services | 2016 |
| Birmingham Settlement (the) | Health & social care | 1985 |
| Birmingham Skate Spaces CIC | Health & social care | 2020 |
| Birmingham Skin Clinic Limited | Health & social care | 2024 |
| Birmingham Skip Hire Ltd | Extraterritorial | 2010 |
| Birmingham Skips Ltd | Water & waste | 2019 |
| Birmingham Small Business Accountants Ltd | Professional & scientific | 2019 |
| Birmingham Smartcare Limited | Health & social care | 2016 |
| Birmingham Social & Cultural Organisation (UK) CIC | Public administration | 2023 |
| Birmingham Social Enterprise Energy Network | Other services | 2007 |
| Birmingham Social Housing Service Ltd | Real estate | 2024 |
| Birmingham Solicitors Limited | Professional & scientific | 2016 |
| Birmingham Solihull Property Ltd | Real estate | 2025 |
| Birmingham Solutions Ltd | Construction | 2025 |
| Birmingham Somawathiya Buddhist Vihara Ltd | Health & social care | 2026 |
| Birmingham Sparky Ltd | Construction | 2025 |
| Birmingham Specialist Glass Company Limited | Construction | 2012 |
| Birmingham Specialities Limited | Manufacturing | 1928 |
| Birmingham Sport and Physical Activity Trust | Other services | 2012 |
| Birmingham Sporting Club Ltd | Arts & recreation | 2024 |
| Birmingham Sports Massage Ltd | Health & social care | 2022 |
| Birmingham Stem Vertex Ltd | Education | 2026 |
| Birmingham Stone Cutting Company Limited | Manufacturing | 1966 |
| Birmingham Stopper Limited | Manufacturing | 1997 |
| Birmingham Student Homes Limited | Real estate | 2003 |
| Birmingham Supplies Ltd | Wholesale & retail | 2024 |
| Birmingham Support Group CIC | Hospitality | 2025 |
| Birmingham Support Limited | Real estate | 2020 |
| Birmingham Supported Accommodation & Services Ltd | Real estate | 2024 |
| Birmingham Supported Accommodation Ltd | Real estate | 2017 |
| Birmingham Supported Housing Ltd | Real estate | 2017 |
| Birmingham Supported Living (2010) Limited | Administrative & support | 2009 |
| Birmingham Supports Services Ltd | Administrative & support | 2021 |
| Birmingham Surgical Services Ltd | Health & social care | 2019 |
| Birmingham Systemic & Family Therapy Ltd | Health & social care | 2017 |
| Birmingham Taxi Service Ltd | Transport & logistics | 2025 |
| Birmingham Taxis and Private Hire Ltd | Transport & logistics | 2010 |
| Birmingham Taxis Ltd | Transport & logistics | 2025 |
| Birmingham Tech CIC | Information & communication | 2019 |
| Birmingham Tech Collective CIC | Information & communication | 2026 |
| Birmingham Test Centre Limited | Wholesale & retail | 2011 |
| Birmingham Thoracic Clinic LLP | | 2021 |
| Birmingham Thyroid Centre LLP | | 2021 |
| Birmingham Times Ltd | Information & communication | 2020 |
| Birmingham Tints Ltd | Extraterritorial | 2022 |
| Birmingham Tipper Services Limited | Transport & logistics | 2010 |
| Birmingham Tones Ltd | Other services | 2025 |
| Birmingham Tours CIC | Health & social care | 2022 |
| Birmingham Trade Frames Ltd | Construction | 2019 |
| Birmingham Traders Ltd | Administrative & support | 2017 |
| Birmingham Trades Ltd | Wholesale & retail | 2026 |
| Birmingham Trainee Solicitors' Society Limited | Other services | 1980 |
| Birmingham Training Academy Ltd | Education | 2024 |
| Birmingham Training Group Limited | Education | 2002 |
| Birmingham Transformers Limited | Manufacturing | 1995 |
| Birmingham Transitional Housing Limited | Real estate | 2025 |
| Birmingham Translation Agency Limited | Other services | 2014 |
| Birmingham Travel & Tours UK Ltd | Transport & logistics | 2025 |
| Birmingham Travel Ltd | Administrative & support | 2015 |
| Birmingham Truck and Trailer Repairs Limited | Manufacturing | 2019 |
| Birmingham Trust for Psychoanalytic Psychotherapy | Education | 1996 |
| Birmingham Tuition Centre Ltd | Education | 2013 |
| Birmingham Tuition Exams Ltd | Education | 2019 |
| Birmingham Tyres Ltd | Wholesale & retail | 2023 |
| Birmingham Tyres World Limited | Wholesale & retail | 2024 |
| Birmingham Uganda Investment Convention Limited | Administrative & support | 2022 |
| Birmingham UK Manufacturing Furniture Ltd | Real estate | 2018 |
| Birmingham UKS Fried Chicken Ltd | Hospitality | 2023 |
| Birmingham Underground Structures Limited | Manufacturing | 2022 |
| Birmingham Unit Base Support Ltd | Water & waste | 2020 |
| Birmingham United Football Coaching Academy CIC | Education | 2024 |
| Birmingham Uprising Community Club CIC | Other services | 2025 |
| Birmingham Urology Centre LLP | | 2021 |
| Birmingham Urology Limited | Health & social care | 2013 |
| Birmingham Van Centre Limited | Professional & scientific | 2012 |
| Birmingham Vascular Clinic Limited | Health & social care | 2015 |
| Birmingham VEG Limited | Wholesale & retail | 2015 |
| Birmingham Vehicles Ltd | Wholesale & retail | 2020 |
| Birmingham Veneers Limited | Manufacturing | 2010 |
| Birmingham Ventures Ltd | Real estate | 2016 |
| Birmingham Victory Unity Centre | Other services | 2002 |
| Birmingham Vineyard | Other services | 1996 |
| Birmingham Voluntary Service Council | Information & communication | 1946 |
| Birmingham Warriors Sporting Club CIC | Education | 2026 |
| Birmingham Water Solutions Ltd | Water & waste | 2020 |
| Birmingham Welding Supplies Limited | Manufacturing | 2001 |
| Birmingham Wheels | Administrative & support | 1986 |
| Birmingham Wholesale Distribution Ltd | Professional & scientific | 2003 |
| Birmingham Wholesale Limited | Wholesale & retail | 2016 |
| Birmingham Wholesale Market Company Limited | Administrative & support | 2015 |
| Birmingham Wholesale Meats Ltd | Wholesale & retail | 2019 |
| Birmingham Wholesale Suppliers Limited | Wholesale & retail | 2026 |
| Birmingham Women's and Children's Hospital Charity | Health & social care | 2015 |
| Birmingham Youth Foundation | Education | 2005 |
| Birmingham's Heating and Cooling Ltd | Construction | 2021 |
| Birmingham(Uk) Linen Services Limited | Other services | 2017 |
| Birminghamepos Limited | Wholesale & retail | 2017 |
| Birmstoke Limited | Manufacturing | 2021 |
| Birmz IS Grime Ltd | Arts & recreation | 2019 |