| Christian Brothers Limited | Hospitality | 2024 |
| Christian Creative Network Limited | Arts & recreation | 2019 |
| Christians Against Gangs C.I.C. | Administrative & support | 2024 |
| Chromatwist Ltd | Manufacturing | 2018 |
| Chromo Designs Ltd | Information & communication | 2026 |
| Chrono Vision Studios Limited | Professional & scientific | 2025 |
| Chua Limited | Real estate | 2022 |
| Chuck UR Muck Utilities Ltd | Construction | 2015 |
| Chuhan Shoes Limited | Wholesale & retail | 2016 |
| Chukar Events Ltd | Arts & recreation | 2025 |
| Chukes Limited | Health & social care | 2019 |
| Chumber Electrical & Building Services Ltd | Construction | 2016 |
| Chunky Chick Ltd | Hospitality | 2026 |
| Chunky Chicken Stoke Ltd | Hospitality | 2023 |
| Church Road Auto Salvage Limited | Wholesale & retail | 2002 |
| Church Road Local Ltd | Wholesale & retail | 2025 |
| Churchill Contractors Limited | Manufacturing | 1979 |
| Churchill Howard Limited | Administrative & support | 2012 |
| Churchill Safes & Security Products Limited | Manufacturing | 1991 |
| CHW Property Development Ltd | Real estate | 2025 |
| Cicada Sports Limited | Wholesale & retail | 2004 |
| Cicero Invest Limited | Real estate | 2024 |
| Cielo Azul Consultancy Limited | Professional & scientific | 2023 |
| Cien Construction Ltd | Construction | 2018 |
| Cig/Dsl Ltd | Transport & logistics | 2025 |
| CIG/F44 Ltd | Transport & logistics | 2025 |
| Cinegate Motion Pictures Ltd | Information & communication | 2025 |
| Cipher Construction Ltd | Administrative & support | 2026 |
| Circle Network Limited | Information & communication | 2009 |
| Circlenest Technology Limited | Information & communication | 2024 |
| Circles Project C.I.C. | Education | 2025 |
| Cirklo Consult Ltd | Professional & scientific | 2018 |
| Cisco Online Ltd | Wholesale & retail | 2025 |
| Ciso Ltd | Other services | 2012 |
| Citadel Meds Ltd | Administrative & support | 2025 |
| Citah Ltd | Wholesale & retail | 2024 |
| Citilogic Ltd | Information & communication | 2011 |
| Citizenaid Limited | Information & communication | 2016 |
| Citrus Elite Recruitment Limited | Administrative & support | 2021 |
| Cittruss Ltd | Wholesale & retail | 2017 |
| City Barbers Club Ltd | Other services | 2025 |
| City Body Repair Centre Ltd | Wholesale & retail | 2026 |
| City Contractors (West Midlands) Limited | Administrative & support | 2014 |
| City Food and Drink Catering Services Limited | Hospitality | 2023 |
| City GAS & Plumbing Ltd | Construction | 2019 |
| City MOT Dobbs Street Limited | Wholesale & retail | 2016 |
| City of Training Ltd | Professional & scientific | 2021 |
| City of Wolverhampton Housing Company Limited | Construction | 2016 |
| City Physio Clinics Limited | Health & social care | 2009 |
| City Quick Logistics Limited | Transport & logistics | 2013 |
| City Quick Storage Ltd | Transport & logistics | 2026 |
| City Security (West Midlands) Limited | Administrative & support | 2012 |
| City Shipprs Ltd | Wholesale & retail | 2019 |
| City Skips (Coventry) Limited | Extraterritorial | 2014 |
| City Suite Stays Ltd | Hospitality | 2026 |
| City Supermarket Wolves Ltd | Wholesale & retail | 2023 |
| City Trims Limited | Construction | 2011 |
| Citywide Equity Forum CIC | Administrative & support | 2025 |
| Ciuk Limited | Real estate | 2023 |
| Civil MDC Ltd | Education | 2021 |
| CJ Fasteners Ltd | Manufacturing | 2024 |
| CJ Global Solutions Ltd | Wholesale & retail | 2026 |
| CJB Comms Solutions Ltd | Information & communication | 2012 |
| CJB Investments Limited | Real estate | 2017 |
| CJL Hospitality Ltd | Hospitality | 2026 |
| CJM Site Services Ltd | Construction | 2014 |
| CJS Portway Holdings Ltd | Real estate | 2022 |
| CK Animal Services Ltd | Other services | 2026 |
| CK Real Estates Ltd | Real estate | 2022 |
| CK Self Storage Ltd | Real estate | 2020 |
| CKF Builders Limited | Construction | 2014 |
| CKW Contracts Limited | Construction | 2011 |
| CKW Holdings Limited | Administrative & support | 2020 |
| CL Capital (UK) Limited | Financial services | 2016 |
| CL Holdings Group Limited | Financial services | 2023 |
| CL Property Solutions Limited | Real estate | 2024 |
| Claines Villa Limited | Households | 1979 |
| Clair-Gill Group Ltd | Real estate | 2023 |
| Clar Holdings Ltd | Manufacturing | 2009 |
| Clara PAR Ltd | Manufacturing | 2022 |
| Clare Paterson Ltd | Manufacturing | 2017 |
| Clare Roberts-Molloy Ltd | Administrative & support | 2021 |
| Claregate Dental Practice Limited | Health & social care | 2014 |
| Clarence Oak Limited | Construction | 2018 |
| Clarika Companionship Services Limited | Health & social care | 2026 |
| Clarity Contractor Services UK Ltd | Administrative & support | 2022 |
| Claritypenny Ltd | Information & communication | 2024 |
| Clarke & Ward Ltd | Real estate | 2023 |
| Clarke Management Consultants Limited | Professional & scientific | 2023 |
| Clarkes Drinks Direct Limited | Wholesale & retail | 2011 |
| Clarkson Properties Limited | Real estate | 1981 |
| Claron Hydraulic Seals Limited | Manufacturing | 1975 |
| Clasmodo Ltd | Wholesale & retail | 2026 |
| Classic Dispense Equipment Limited | Manufacturing | 2002 |
| Classic Fish Bar and Pizza Limited | Hospitality | 2024 |
| Classic Screens Limited | Professional & scientific | 2007 |
| Classic Stitch Prints & Embroidery Ltd | Manufacturing | 2024 |
| Claunic Ltd | Construction | 2026 |
| Claver Ltd | Health & social care | 2025 |
| Claypit Property Management Ltd | Real estate | 2025 |