| Cassidy - Rose Ltd | Wholesale & retail | 2025 |
| Castaways Fish & Chips Ltd | Hospitality | 2024 |
| Castle Farm Boarding Kennels Limited | Agriculture & fishing | 2009 |
| Castle Valeting Services Ltd | Other services | 2021 |
| Castle View Park Homes Limited | Hospitality | 2017 |
| Catalin Contracts Limited | Transport & logistics | 2023 |
| Catapult Enterprises Ltd | Wholesale & retail | 2009 |
| Catlane Friesians Ltd | Agriculture & fishing | 2016 |
| Cats Supply Group Ltd | Transport & logistics | 2024 |
| Cavendish House RTM Company Limited | Households | 2015 |
| Cawsey Homes Limited | Real estate | 2026 |
| CB Resin Flooring Ltd | Construction | 2022 |
| CB Tints Ltd | Other services | 2022 |
| CBR Management Ltd | Hospitality | 2023 |
| Cbs-It Limited | Information & communication | 2020 |
| Cc&Yd Ltd | Wholesale & retail | 2021 |
| CC1993 Ltd | Transport & logistics | 2017 |
| CCA Clinical Services Ltd | Health & social care | 2022 |
| CCB Group Limited | Administrative & support | 2016 |
| Ccta Group Ltd | Transport & logistics | 2026 |
| CD Mechanical and Electrical (Midlands) Limited | Construction | 2018 |
| CDA Transport Ltd | Transport & logistics | 2023 |
| CDK Construction Group Ltd | Financial services | 2020 |
| CDK Group Services Ltd | Financial services | 2019 |
| CDK Partners LLP | | 2022 |
| Cdme Holdings Limited | Construction | 2018 |
| Cellurelle Aesthetic Sciences Ltd | Health & social care | 2026 |
| Centmetal Property Limited | Real estate | 2007 |
| Central & County Automation Limited | Professional & scientific | 2011 |
| Central England Academy Trust | Education | 2013 |
| Central England Patent & Trademark Attorneys Limited | Professional & scientific | 2012 |
| Central Equestrian Rehab & Fitness Ltd | Agriculture & fishing | 2024 |
| Central Metals & Alloys Ltd | Wholesale & retail | 1985 |
| Central Order Limited | Hospitality | 2022 |
| Central Process Burners Limited | Manufacturing | 2025 |
| Central Process Burners Sales Limited | Manufacturing | 2025 |
| Central Sourcing Ltd | Real estate | 2017 |
| Central Stoves Limited | Construction | 2012 |
| Centre for Tattoo Education & Practice Ltd | Education | 2025 |
| Cerulean Property Group Limited | Real estate | 2025 |
| CF Contract Services (UK) Ltd | Professional & scientific | 2013 |
| Ch'I Box Ltd | Wholesale & retail | 2020 |
| Chahal Nivas Ltd | Real estate | 2026 |
| Chaiandbites Ltd | Hospitality | 2021 |
| Chalkley Tree Services Ltd | Agriculture & fishing | 2018 |
| Chamberlain Consultancy Ltd | Professional & scientific | 2023 |
| Chambers Motorsports Solutions Limited | Transport & logistics | 2019 |
| Chameleon Film & Television Ltd | Information & communication | 2019 |
| Chancery Domains Limited | Extraterritorial | 2009 |
| Change by Nude Health Ltd | Public administration | 2024 |
| Chapel Hill Management Company Limited | Households | 1987 |
| Chapel Management Limited | Households | 2003 |
| Chapelfields (Burbage) Management Limited | Households | 1993 |
| Charisma Finance Ltd | Financial services | 2026 |
| Charles Street RTM Company 2012 Limited | Households | 2012 |
| Charlie's Events Limited | Hospitality | 2024 |
| Charlotte Portlock Photography Limited | Other services | 2015 |
| Charnley Memorials Limited | Other services | 1997 |
| Cheeky Dolphin Productions Ltd | Manufacturing | 2025 |
| Cheeky Monkeys Catering Ltd | Hospitality | 2026 |
| Cheeky Monkeys Nuneaton Ltd | Health & social care | 2020 |
| Cheeky Monkeys Playcentre Nuneaton Ltd | Health & social care | 2020 |
| Chef & Co Ltd | Hospitality | 2018 |
| Chemcarry Ltd | Transport & logistics | 2013 |
| Chemih Ltd | Transport & logistics | 2017 |
| Chiedza and Alice CIC | Real estate | 2025 |
| Childerstone Limited | Real estate | 2016 |
| Chill'D CIC | Education | 2024 |
| Chillaire Limited | Manufacturing | 1992 |
| Chilled Hire Ltd | Extraterritorial | 2020 |
| Chilvers Coton Centre Trust | Arts & recreation | 1988 |
| Choice Response Ltd | Health & social care | 2025 |
| Choquet Lettings Limited | Real estate | 2021 |
| Chourteney Limited | Wholesale & retail | 2025 |
| Chris and Co Truck and Plant Solutions Limited | Transport & logistics | 2013 |
| Chris Emanuele Holdings Limited | Real estate | 2019 |
| Christabel Care Limited | Health & social care | 2015 |
| Christiana Amoke Omoniyi Ltd | Financial services | 2017 |
| Christine Solutions Ltd | Transport & logistics | 2025 |
| Christopher Leonard White Limited | Extraterritorial | 2025 |
| Churchill Roofing (Coventry) Limited | Construction | 2023 |
| Ciorita Transport Limited | Transport & logistics | 2019 |
| Cipco 2016 Limited | Transport & logistics | 2016 |
| Cisla Earthworks Ltd | Construction | 2024 |
| Citw Academy Ltd | Education | 2024 |
| City Connex Ltd | Real estate | 2002 |
| City Scaffolding & Services Ltd | Construction | 2023 |
| CJ Auto Repair Specialists Ltd | Wholesale & retail | 2024 |
| CJ Construction Consultants Ltd | Professional & scientific | 2025 |
| CJC Site Engineering Ltd | Construction | 2007 |
| Cjds Services Ltd | Professional & scientific | 2026 |
| CJM Accountants Limited | Professional & scientific | 2019 |
| CJM LOG Ltd | Transport & logistics | 2026 |
| CJM Ventures Limited | Real estate | 2020 |
| CK Tax Limited | Real estate | 2024 |
| CKF4H Transport Ltd | Transport & logistics | 2018 |
| CL Properties & Developments Limited | Real estate | 2018 |
| Clador Transport Limited | Transport & logistics | 2018 |
| Claremont Care Home Limited | Administrative & support | 2012 |
| Clarence Court Housing Limited | Households | 1990 |