| CA Wilson Holdings Limited | Financial services | 2017 |
| Cake and Bake (by SAM) Ltd | Manufacturing | 2023 |
| Cameron Estates Management Ltd | Real estate | 2008 |
| Cameron Homes Limited | Construction | 1993 |
| Cameron Property Management Limited | Real estate | 1999 |
| Camion Events Catering Ltd | Hospitality | 2026 |
| Cannock Chase Escape Room Ltd | Arts & recreation | 2018 |
| Capau Entertainments Ltd | Administrative & support | 2023 |
| Caring Daycare Limited | Education | 1997 |
| Carisson Properties Limited | Real estate | 2000 |
| Carnet Midlands Limited | Wholesale & retail | 2017 |
| Cartello Adams Ltd | Transport & logistics | 2014 |
| Cartello Ambulance Ltd | Transport & logistics | 2018 |
| Cartello Work Shops Ltd | Wholesale & retail | 2022 |
| CAS Construction Midlands Ltd | Construction | 2020 |
| Casamia Residents Ltd | Professional & scientific | 2022 |
| Cashew Holdings Limited | Education | 2007 |
| Caught OFF Guard Ltd | Wholesale & retail | 2025 |
| Ceredigion Sustainable Development Ltd | Construction | 2015 |
| Challenger Heating Services Limited | Construction | 2022 |
| Chapel View (Burntwood) Management Company Ltd. | Administrative & support | 2002 |
| Chariot Estates Ltd | Real estate | 2006 |
| Charlie Green Music Ltd | Arts & recreation | 2009 |
| Charlie@Stone Limited | Other services | 2023 |
| Charmworld Limited | Wholesale & retail | 2017 |
| Chase Computing Ltd | Information & communication | 2025 |
| Chase Engraving & Embroidery Limited | Wholesale & retail | 2026 |
| Chase Games Events Ltd | Arts & recreation | 2019 |
| Chase Gourmet Limited | Hospitality | 2020 |
| Chase Holdings Limited | Professional & scientific | 2006 |
| Chase RV Electrics Limited | Manufacturing | 2001 |
| Chase Takeaway Ltd | Hospitality | 2026 |
| Chasetown Barbershop Ltd | Other services | 2026 |
| Chasetown Civil Engineering Limited | Construction | 1974 |
| Chasewood Accommodation Limited | Hospitality | 2022 |
| Cheeky Monkeys OSC Ltd | Health & social care | 2013 |
| Chemtech Industrial Services Limited | Extraterritorial | 2010 |
| Cherry Orchard Garden Services Community Interest Company | Health & social care | 2010 |
| Cheslyn Holdings Limited | Financial services | 2023 |
| Chestnut Close Management Services Ltd | Households | 2018 |
| Chicfu Ltd | Wholesale & retail | 2025 |
| Chpm Limited | Real estate | 2008 |
| Cjcc Limited | Hospitality | 2019 |
| CK Fabrications Limited | Manufacturing | 2021 |
| CLA Installations Ltd | Administrative & support | 2018 |
| CLA Installs Limited | Administrative & support | 2025 |
| Clanadam Limited | Administrative & support | 2017 |
| Clarkegrove (Flats) Limited | Households | 1985 |
| Class One Recruitment Limited | Administrative & support | 2005 |
| Clean EAR Solutions Ltd | Public administration | 2025 |
| Cleveland Gold Limited | Wholesale & retail | 1988 |
| Clives Wines Ltd | Administrative & support | 2017 |
| CM Services Midlands Ltd | Health & social care | 2019 |
| CNL Decor Limited | Construction | 2019 |
| Coffey Construction Limited | Construction | 1988 |
| Coffey Infrastructure Limited | Construction | 2022 |
| Coffey Plant (UK) Limited | Administrative & support | 1993 |
| Collis & Cantrill Holdings Ltd | Financial services | 2018 |
| Comfy PUB Company Ltd | Hospitality | 2010 |
| Computer Disposal Experts Ltd | Information & communication | 2019 |
| CON Air Services Ltd | Construction | 2025 |
| Confi-Dent (UK) Ltd | Manufacturing | 2007 |
| Connected Creatives - Young Voices Matter Limited | Administrative & support | 2022 |
| Connectfleet Ltd | Information & communication | 2017 |
| Contemporary Inns Ltd | Hospitality | 2020 |
| Contract Project Controls Ltd | Professional & scientific | 2013 |
| Cool Swim Ltd | Arts & recreation | 2023 |
| Copperfield Homes Limited | Construction | 2020 |
| Copycat Writer Ltd | Information & communication | 2023 |
| Corelli Limited | Administrative & support | 2013 |
| Cores Developments Limited | Real estate | 2016 |
| Cores Properties Limited | Real estate | 2016 |
| Corsair Wholesale Limited | Wholesale & retail | 2011 |
| Corvia Event Services Ltd | Hospitality | 2025 |
| Cosecha Digital Ltd | Information & communication | 2026 |
| Countryside Day Nurseries Ltd. | Education | 2004 |
| Countrywide Mechanical Services Limited | Construction | 2006 |
| Court Catering Equipment Limited | Manufacturing | 1976 |
| Couture Reborn Limited | Other services | 2021 |
| Covered by Canvas Limited | Construction | 2018 |
| Coverscope Limited | Manufacturing | 1992 |
| CR Childcare Limited | Administrative & support | 2006 |
| Craig Chance Holdings Ltd | Transport & logistics | 2010 |
| Craig Chance Properties Limited | Construction | 2025 |
| Craig Humpage Tipper Hire Limited | Water & waste | 2021 |
| Creativux Ltd | Professional & scientific | 2017 |
| Critical Freight Ltd | Transport & logistics | 2017 |
| Crown Construction Services Limited | Extraterritorial | 2006 |
| Crown Cutting Services Limited | Extraterritorial | 2013 |
| Crown Highway West Midlands Limited | Construction | 2020 |
| Crown Highways Limited | Construction | 2002 |
| Crown House Property Management Limited | Real estate | 2007 |
| Crown Works Tree Services Ltd | Agriculture & fishing | 2019 |
| Crystal Clear Windows Ltd. | Construction | 1996 |
| CS Building & Maintenance Ltd | Construction | 2025 |
| Cult Screenings UK Ltd | Information & communication | 2013 |
| CUP and Cause CIC | Hospitality | 2025 |
| CV Clinical Ltd | Health & social care | 2017 |
| CW5 Engineering Group Ltd | Professional & scientific | 2024 |
| D & D Bricklaying Ltd | Construction | 2017 |