| Coopers Way Hospitality Limited | Hospitality | 2024 |
| Corley Media Ltd | Arts & recreation | 2021 |
| Corner Shop 247 Ltd | Wholesale & retail | 2024 |
| Cosworth Stud Feeds Limited | Wholesale & retail | 2010 |
| Cosy Bean Coffee Limited | Hospitality | 2025 |
| County Fencing Supplies Limited | Manufacturing | 2010 |
| Court Yard Vibes Limited | Hospitality | 2018 |
| Covera Limited | Construction | 2019 |
| Cozy Matress Ltd | Wholesale & retail | 2025 |
| Cozy Mole Group Ltd | Wholesale & retail | 2024 |
| Cprit Midlands Limited | Other services | 2018 |
| Crackley Restaurant Ltd | Hospitality | 2025 |
| Craft Master Solutions Ltd | Administrative & support | 2024 |
| Crafted Builders Ltd | Construction | 2024 |
| Craftsman Joinery Limited | Construction | 2023 |
| Crankhall Shop Ltd | Wholesale & retail | 2025 |
| Crisp Home Maintenance Ltd | Construction | 2023 |
| Cristi Lungu Ltd | Transport & logistics | 2024 |
| Critical Logistics Ltd | Transport & logistics | 2023 |
| Croft Bar Ltd | Hospitality | 2024 |
| Croft Scaffolding Specialist Limited | Construction | 2025 |
| Cronekiln Limited | Professional & scientific | 1938 |
| Crossroad Properties Limited | Real estate | 2017 |
| Crown Communication Systems Limited | Information & communication | 1995 |
| Crucial Catering Ltd | Hospitality | 2019 |
| Crucial Recycling Ltd | Water & waste | 2022 |
| Crucial Removals Ltd | Transport & logistics | 2019 |
| Crystal Print Services Ltd | Manufacturing | 2021 |
| CSC Auto Hub Limited | Wholesale & retail | 2026 |
| CSK WM Ltd | Real estate | 2021 |
| Cssp Services Limited | Other services | 2018 |
| CTD Welding Services Ltd | Manufacturing | 2024 |
| CTM Interiors Limited | Construction | 2019 |
| Cullen Consultancy Ltd | Construction | 2019 |
| Curvllin Healthcare Ltd | Health & social care | 2025 |
| Cutting Edge Workshop Ltd | Manufacturing | 2023 |
| Cyrus Express Ltd | Transport & logistics | 2024 |
| D & S Metals Ltd | Water & waste | 2011 |
| D and R Hari Services Ltd | Manufacturing | 2021 |
| D CH Window and Glazing Limited | Construction | 2022 |
| D H Defence Academy Limited | Arts & recreation | 2018 |
| D H Stainless Limited | Wholesale & retail | 2001 |
| D Harris Roofing Services Limited | Construction | 2020 |
| D P Broadhurst Limited | Construction | 2014 |
| D W T Contracting Limited | Construction | 2015 |
| D Wheale Carpentry and Window Services Ltd | Construction | 2014 |
| D&W Electronic Solutions Limited | Information & communication | 2016 |
| D&Z Perfect Line Ltd | Construction | 2024 |
| D. Broadhurst Limited | Construction | 1975 |
| D.A. Stokes Ltd | Wholesale & retail | 2018 |
| D.D.C. Rail Ltd | Construction | 2015 |
| D.E.M Motors Ltd | Wholesale & retail | 2019 |
| D.G.S.N. Bedrooms Ltd | Real estate | 2016 |
| D.J.L.Engineering Limited | Manufacturing | 2000 |
| D.M. Electrical WM Ltd | Construction | 2019 |
| D40 Transport Services Ltd | Transport & logistics | 2024 |
| Daborc-Tee Limited | Professional & scientific | 2022 |
| Dainty Holdings Limited | Hospitality | 2022 |
| Daken Construction Limited | Construction | 2010 |
| Dalair Limited | Manufacturing | 1981 |
| Dallas Rentals Limited | Administrative & support | 2017 |
| Dan's Auto Ltd | Wholesale & retail | 2025 |
| Danica Construction Ltd | Construction | 2019 |
| Danny Hanson Ltd | Construction | 2019 |
| Dark Spectrum Ltd | Other services | 2022 |
| Dark Wood Furniture Ltd | Manufacturing | 2017 |
| Darlaston Fabrications Ltd | Manufacturing | 2024 |
| Darlaston Fish Bar Limited | Hospitality | 2024 |
| Darlaston Plumbing and Bathrooms Ltd | Wholesale & retail | 2019 |
| Darlaston Smith Ltd | Wholesale & retail | 2011 |
| Darlaston Supermarket Ltd | Wholesale & retail | 2025 |
| Darlaston Taxshop Ltd | Professional & scientific | 2006 |
| Darlaston Turkish Barber Ltd | Other services | 2024 |
| Darlaston Youth Centre | Health & social care | 2016 |
| Darlaton Drink Shop Limited | Wholesale & retail | 2022 |
| Darlo Express Ltd | Wholesale & retail | 2025 |
| Darren Kimbley Limited | Construction | 2015 |
| Darren Symes Clearance & Maintenance Ltd | Construction | 2017 |
| DASH2PLUS Ltd | Public administration | 2024 |
| Datahalt Ltd | Information & communication | 2022 |
| Datatrack Solutions Ltd | Professional & scientific | 2021 |
| David Blessing Midlands Limited | Wholesale & retail | 2019 |
| David Broadhurst Limited | Professional & scientific | 2012 |
| David Recruitment Ltd | Administrative & support | 2025 |
| Dawn International Foods Ltd | Wholesale & retail | 2023 |
| Dawson Contracts (Midlands) Limited | Construction | 2002 |
| DAWUD25 Limited | Wholesale & retail | 2025 |
| DBL Services Ltd | Transport & logistics | 2018 |
| DBR Garage Ltd. | Wholesale & retail | 2018 |
| DDB Construction and Demolition Ltd | Construction | 2025 |
| DE Supreme Limited | Construction | 2014 |
| Deanson Wilkes (Forms and Systems) Limited | Manufacturing | 1992 |
| Deanson Wilkes (System Solutions) Limited | Real estate | 2003 |
| Deasons Ltd | Other services | 2019 |
| Deep Trading Limited | Health & social care | 2023 |
| Dekken Distribution Limited | Manufacturing | 2022 |
| Delectusai Limited | Administrative & support | 2024 |
| Delhi Street Ltd | Hospitality | 2025 |
| Delight African Restaurant Services Limited | Hospitality | 2024 |
| Delish Bar Grill & Carvery Limited | Hospitality | 2018 |