| Crestar Healthcare Limited | Health & social care | 2010 |
| CRH Training Ltd | Transport & logistics | 2018 |
| Crimson Electrical Solutions Ltd | Construction | 2025 |
| Cristof Ltd | Transport & logistics | 2018 |
| Criterion Stampings Limited | Manufacturing | 1912 |
| Cross House Village Store Ltd | Wholesale & retail | 2023 |
| Crosswells Retail Ltd | Wholesale & retail | 2026 |
| Crowd Shield Security Ltd | Administrative & support | 2025 |
| Crown Deals Hub Ltd | Wholesale & retail | 2025 |
| Cruise Property Limited | Real estate | 2024 |
| Crystal Castle Hair & Beauty Ltd | Other services | 2023 |
| Crystal Clear Vision (Stone Cross) Limited | Wholesale & retail | 2019 |
| Crystal Cure Clothing Ltd | Wholesale & retail | 2018 |
| Crystal Fitted Wardrobes Limited | Wholesale & retail | 2025 |
| CSD 24/7 Security Ltd | Administrative & support | 2019 |
| CSD Couriers Ltd | Transport & logistics | 2024 |
| CT Fit Ltd | Arts & recreation | 2018 |
| CTB Trading Ltd | Wholesale & retail | 2025 |
| CTI Coaches Ltd | Education | 2010 |
| CTI Retail Ltd | Transport & logistics | 2023 |
| Cumforts&Rentals at EZ Ltd | Administrative & support | 2026 |
| Curl Girl Productions CIC | Arts & recreation | 2024 |
| Curly Proverbz Ltd | Wholesale & retail | 2020 |
| Curry & Grill Traditional Fish & Chips Ltd. | Hospitality | 2019 |
| Custom Filtration Ltd | Manufacturing | 2024 |
| Cuts & Fades Ltd | Other services | 2021 |
| Cvdirect Limited | Manufacturing | 2024 |
| Cyrus Mckoy Limited | Wholesale & retail | 2026 |
| Czech-Pol Ltd | Health & social care | 2012 |
| D & P Paper Recycling Ltd | Water & waste | 2024 |
| D & S Enterprises Limited | Real estate | 2003 |
| D & T Natt Limited | Real estate | 2019 |
| D a M Builders Ltd | Construction | 2024 |
| D Finney Power Press Sales Ltd | Manufacturing | 2013 |
| D G Logistics B'Ham Ltd | Transport & logistics | 2022 |
| D L Hall Engineering Ltd | Manufacturing | 2019 |
| D M Transport B'Ham Ltd | Transport & logistics | 2020 |
| D M&M Property Ltd | Real estate | 2023 |
| D R J Stores Ltd | Wholesale & retail | 2020 |
| D R Wallace Services Ltd | Construction | 2018 |
| D S Transport Midland Ltd | Transport & logistics | 2021 |
| D Statuum Ltd | Construction | 2021 |
| D Tyre Mobile UK Ltd | Wholesale & retail | 2024 |
| D V Valeting Midlands Ltd | Other services | 2021 |
| D&G Supply Ltd | Wholesale & retail | 2026 |
| D&M Kitchen and Bedroom Ltd | Manufacturing | 2023 |
| D&U Trading Ltd | Wholesale & retail | 2025 |
| D'S Auto's Mobile Mechanic Ltd | Wholesale & retail | 2021 |
| D. P. Design Properties Limited | Professional & scientific | 1996 |
| D.G. Alarms Ltd | Administrative & support | 2011 |
| D.H.R. & L. Hinks Limited | Financial services | 1967 |
| D.S. Constructions (Midlands) Limited | Administrative & support | 2010 |
| D2P Investments Ltd | Construction | 2025 |
| D7 Advisory Ltd | Professional & scientific | 2023 |
| DA Electrician Ltd | Energy | 2023 |
| Daalbhatdesign Ltd | Wholesale & retail | 2025 |
| DAB Logistics Midlands Ltd | Transport & logistics | 2021 |
| Dabrunch Ltd | Hospitality | 2023 |
| Dadyal Catering Limited | Hospitality | 2015 |
| Daljit Transport Ltd | Transport & logistics | 2019 |
| Dalmore Recruit Ltd | Administrative & support | 2025 |
| Danaustino Limited | Wholesale & retail | 2019 |
| Danaz Ltd | Real estate | 2022 |
| Dandy Fans Limited | Manufacturing | 2017 |
| Danibls Ltd | Information & communication | 2019 |
| Danphe Takeaway Limited | Hospitality | 2024 |
| Dappa Cabs Ltd | Wholesale & retail | 2022 |
| Dara Shah Properties Ltd | Real estate | 2026 |
| Darbar Events Limited | Arts & recreation | 2024 |
| Darek Building Cleaning Ltd | Administrative & support | 2025 |
| Darex Limited | Health & social care | 2024 |
| Daria Welfare Advice Ltd | Real estate | 2025 |
| Darlaston Green Limited | Real estate | 2009 |
| Dartmouth Community Hub CIC | Education | 2018 |
| Data Channel Limited | Professional & scientific | 2018 |
| David Wallace Ltd | Real estate | 2021 |
| Davy Glass Limited | Water & waste | 1999 |
| Day Light 2 Limited | Construction | 2026 |
| Daze Technologies Ltd | Wholesale & retail | 2019 |
| DB Builders (Birmingham) Ltd | Construction | 2021 |
| DB Four Estates Limited | Real estate | 2026 |
| DBC Associates Limited | Professional & scientific | 2009 |
| DBS Mechanical Limited | Construction | 2019 |
| DD Tomek Ltd | Professional & scientific | 2017 |
| Dealzgreen Ltd | Administrative & support | 2024 |
| Deane Property Ltd | Real estate | 2025 |
| Decadent Homes Ltd | Real estate | 2025 |
| Decur Limited | Manufacturing | 2015 |
| Deekemy Group UK Ltd | Wholesale & retail | 2011 |
| Deen Store Limited | Wholesale & retail | 2026 |
| Deep Construction Midlands Ltd | Construction | 2024 |
| Deep Courier UK Limited | Transport & logistics | 2016 |
| Deep Diagnostics Limited | Real estate | 2023 |
| Deep Highways Ltd | Transport & logistics | 2026 |
| Deep Transport Limited | Transport & logistics | 2021 |
| Deepak Tura Limited | Hospitality | 2024 |
| Deepika Sweet Centre Ltd | Hospitality | 2024 |
| Dehal Construction Limited | Construction | 2022 |
| Deiw Limited | Construction | 2025 |
| Delara Trading Ltd | Wholesale & retail | 2025 |