| Coley & Swinnerton Limited | | 1970 |
| Colmore Square Trustees Limited | Professional & scientific | 2002 |
| Cologne Cosmetics Limited | Administrative & support | 2004 |
| Colordesigns Limited | Water & waste | 1998 |
| Comfortable Cipher Household Articles Limited | Wholesale & retail | 2023 |
| Comlynx Communications Limited | Wholesale & retail | 1998 |
| Command Consultants Limited | | 1985 |
| Compassionate Care Midlands Limited | Public administration | 2024 |
| Compassionate Care Tamworth Ltd | Public administration | 2024 |
| Compliance and Operations Management Consulting, Limited | Professional & scientific | 2006 |
| Component Parts Limited | Extraterritorial | 2002 |
| Component Supplies Limited | Manufacturing | 1986 |
| Comptons 2000 Limited | Manufacturing | 2000 |
| Computasys Limited | Information & communication | 2006 |
| Conan Consulting Limited | Professional & scientific | 2006 |
| Concept 2 Completion (Midlands) Limited | Administrative & support | 2005 |
| Conecraft Limited | Arts & recreation | 1988 |
| Connect Recruitment Limited | Administrative & support | 1999 |
| Conoco Estates Ltd | Real estate | 2019 |
| Consolidated Steel Products Ltd. | Manufacturing | 1997 |
| Conspire Creations Ltd | Information & communication | 2025 |
| Construction & Development (UK) Ltd | Extraterritorial | 2009 |
| Construction & Office Services Limited | Professional & scientific | 2003 |
| Consult&C Ltd | Professional & scientific | 2007 |
| Contract Driver Services (West Midlands) Limited | Transport & logistics | 2007 |
| Contract Garden & Cleaning Services Limited | Administrative & support | 2003 |
| Conway Packing Services Limited | Transport & logistics | 1991 |
| Cook Eyecare Limited | Health & social care | 2004 |
| Cool Day`S Limited | Construction | 2003 |
| Cool Direct Limited | Professional & scientific | 2002 |
| Cooler Climates Limited | Wholesale & retail | 2003 |
| Cooling Event Services Limited | Energy | 2002 |
| Coolmetal Limited | Manufacturing | 1997 |
| Cools Limited | Wholesale & retail | 2006 |
| Copique Ltd. | | 1984 |
| Coppice Couriers Limited | Transport & logistics | 2005 |
| Copsewood Editorial Services Ltd | Information & communication | 2005 |
| Copt Heath Golf Club,Limited(The) | Arts & recreation | 1910 |
| Corbetts Dudley Ltd | Wholesale & retail | 1996 |
| Coreserve LLP | | 2006 |
| Coretek Manufacturing Limited | Manufacturing | 2026 |
| Corncrake Properties Limited | Real estate | 2003 |
| Cornero Limited | Extraterritorial | 2023 |
| Cornvalley Estates Limited | Other services | 1996 |
| Corporate Hygiene Limited | Wholesale & retail | 2002 |
| Cortest International Limited | Wholesale & retail | 2023 |
| Coton Properties Limited | Real estate | 2000 |
| County Developments (Surveys) Ltd | Professional & scientific | 1983 |
| Courtesy Travel Limited | Administrative & support | 1983 |
| Couts Limited | Extraterritorial | 1990 |
| Coventry City Mission | Health & social care | 2000 |
| Coventry Cooling Equipment Limited | Wholesale & retail | 2002 |
| Coventry Glass & Glazing Limited | Professional & scientific | 1999 |
| Coventry Internet Developments Limited | Information & communication | 2000 |
| Coventry Sports and Functions Limited | Arts & recreation | 2017 |
| CPF Communications Limited | Information & communication | 2007 |
| CPJ (Kingswinford) Limited | Wholesale & retail | 2007 |
| CR Products Limited | Wholesale & retail | 2005 |
| Cradley Heath Motor Co.Ltd | Wholesale & retail | 1998 |
| Craft Union Trading Limited | Hospitality | 2025 |
| Craig-Newton Plant Limited | | 1974 |
| Crana Masonry Limited | Construction | 2007 |
| Cranetec Engineering North Limited | Administrative & support | 2004 |
| Cranmer Court Residents Wolverhampton Limited | Real estate | 1983 |
| Crazy Panda Clothing Limited | Wholesale & retail | 2023 |
| Cream Line Limited | Hospitality | 2003 |
| Creativation Limited | Information & communication | 2000 |
| Creative Design & Integration Limited | Real estate | 2006 |
| Critchley Hardware (1999) Limited | Wholesale & retail | 1999 |
| Croe Appliances Co., Ltd | Wholesale & retail | 2023 |
| Croft Architectural Hardware Limited | Manufacturing | 1993 |
| Croft Medical Centre Limited | Wholesale & retail | 2003 |
| Croftdawn Limited | Administrative & support | 2002 |
| Crombies Accountants Limited | Professional & scientific | 2007 |
| Cronin Development Consultancy Limited | Professional & scientific | 2005 |
| Crosland Cutters Limited | Manufacturing | 1972 |
| Crossways Store Limited | Administrative & support | 2006 |
| Crosswells Garages Limited | Wholesale & retail | 2002 |
| Crosswells Properties Limited | Real estate | 2002 |
| Crowning Glory of Merry Hill Limited | Other services | 2002 |
| Crucial Management Services Limited | Professional & scientific | 2003 |
| Crystal Clear Engineering Services Limited | Professional & scientific | 2007 |
| Crystal Pine Limited | Real estate | 1992 |
| Crystal Polishing (UK) Limited | Manufacturing | 2003 |
| Crystalcharm Limited | Wholesale & retail | 2002 |
| Cuddly Buddly Limited | Wholesale & retail | 2025 |
| Current Electrical Services (UK) Limited | Other services | 2000 |
| Curry Balti Restaurant Ltd | Hospitality | 2026 |
| CUT and DRY (Wolverhampton) Limited | Other services | 2002 |
| Cuvine Limited | Health & social care | 1983 |
| Cuxson Gerrard & Company Limited | Manufacturing | 1904 |
| Cuxson Gerrard Esop Trustee Company Limited | Professional & scientific | 1965 |
| Cuxson, Gerrard & Co. (Dressings) Limited | Professional & scientific | 1933 |
| Cuxson, Gerrard & Co. (I.M.S.) Limited | Professional & scientific | 1978 |
| Cuxson, Gerrard & Co. (Plastics) Limited | Professional & scientific | 1978 |
| Cybernet Web Active Limited | Information & communication | 2003 |
| Cybersec Consultancy Ltd | Information & communication | 2022 |
| D & E Contractors Limited | Construction | 2001 |
| D & P Signs Limited | Manufacturing | 2002 |
| D & R Racking Limited | Wholesale & retail | 1995 |