| Bump to Baby Prams Limited | Wholesale & retail | 2018 |
| Buttylicious Family Limited | Hospitality | 2025 |
| C W Joinery & Building Ltd | Construction | 2022 |
| C&J Needham UK Limited | Professional & scientific | 2020 |
| C&M ALL Seasons Ltd | Construction | 2025 |
| C&Pi UK Ltd | Transport & logistics | 2023 |
| C. & G. Mullen Limited | Professional & scientific | 1975 |
| C.I.P Business Management Services Limited | Professional & scientific | 2015 |
| Caer Recruitment Limited | Administrative & support | 2013 |
| Cafgas and Domestic OIL Services CIC | Construction | 2019 |
| Calmway Living Ltd | Real estate | 2026 |
| Calo Services Limited | Professional & scientific | 2026 |
| Cambrian Aquatics C.I.C. | Arts & recreation | 2015 |
| Cambrian Aquatics Sports Limited | Wholesale & retail | 2017 |
| Cambrian GAS (Holdings) Limited | Wholesale & retail | 2017 |
| Cambrian GAS Limited | Wholesale & retail | 1989 |
| Camgas (Holdings) Limited | Financial services | 2025 |
| Camria Ltd | Wholesale & retail | 2018 |
| CAN Cook (Food) Limited | Hospitality | 2015 |
| Capelle UK Ltd | Transport & logistics | 2013 |
| Capital Services Group Electrical Ltd | Construction | 2026 |
| Capital Services Group Ltd | Construction | 2019 |
| Caradog Services Limited | Administrative & support | 2024 |
| Carden Properties Ltd | Real estate | 2023 |
| Carlmak Limited | Administrative & support | 2014 |
| Cars&Parts Sales Ltd | Wholesale & retail | 2024 |
| Castell Youth CIC | Health & social care | 2025 |
| Castle Cove Caravan Park Ltd | Hospitality | 2010 |
| Catrefi MON Ltd | Real estate | 2018 |
| Cattle Hoofcare Ltd | Other services | 2019 |
| Catton Corporation Ltd | Wholesale & retail | 2023 |
| CC Accounts Limited | Professional & scientific | 2013 |
| CC Express Logistics Ltd | Transport & logistics | 2018 |
| CC Scaffolding UK Limited | Construction | 2018 |
| Ceann MOR Limited | Professional & scientific | 2017 |
| Celsius Trade Supplies Limited | Wholesale & retail | 2016 |
| Cenj Group Ltd | Arts & recreation | 2025 |
| Centric Care Limited | Health & social care | 2017 |
| Certified EX Solutions Limited | Manufacturing | 2014 |
| CH5 Limited | Wholesale & retail | 2026 |
| Chalils Estates Limited | Real estate | 2023 |
| Challenger Mobile Communications (Holdings) Limited | Information & communication | 2018 |
| Challenger Mobile Communications Limited | Information & communication | 1993 |
| Challenger Mobile Solutions Limited | Information & communication | 2007 |
| Chandrahas Limited | Other services | 2024 |
| Chax Ltd | Real estate | 2020 |
| Chdriving Ltd | Transport & logistics | 2014 |
| Check Communications Limited | Information & communication | 1995 |
| Checkcare Communications Limited | Administrative & support | 2004 |
| Chellys Fuel Box Ltd | Hospitality | 2025 |
| Chen 228 Ltd | Hospitality | 2019 |
| Ches Painting & Decorating Ltd | Construction | 2025 |
| Cheshire Crane Hire and Transport Limited | Construction | 2025 |
| Cheshire Drilling Limited | Construction | 2015 |
| Cheshire Renewable Energy Ltd | Construction | 2022 |
| Chester Business Park Management Company Limited | Real estate | 1991 |
| Chester Cars Limited | Transport & logistics | 2025 |
| Chesterton Grant Mortgages Ltd. | Financial services | 2001 |
| Chestnut Motors Limited | Wholesale & retail | 2015 |
| Chil Properties Ltd | Real estate | 2026 |
| Chil UK Group Ltd | Financial services | 2026 |
| Chil UK Ltd | Manufacturing | 2015 |
| Church Fundraising CIC | Professional & scientific | 2020 |
| Church Inspections Ltd | Administrative & support | 2022 |
| Church Lane Ewloe Ltd | Extraterritorial | 2015 |
| Churchward Surveyors Ltd | Other services | 2024 |
| CJ Motors Buckley Limited | Wholesale & retail | 2020 |
| Cj’S Gym Ltd | Arts & recreation | 2015 |
| Claimsupermarket.Com Limited | Extraterritorial | 2003 |
| Clarendon Assets Limited | Real estate | 1959 |
| Classfree Limited | Arts & recreation | 1992 |
| Classic Rally Limited | Arts & recreation | 2012 |
| Clay Sports Shooting Ltd | Arts & recreation | 2020 |
| Cleanique Limited | Other services | 2023 |
| Clearcue Ltd | Information & communication | 2025 |
| Climate Conservatories Ltd | Construction | 2023 |
| Clive Barber Limited | Other services | 2025 |
| Clive Leach Consultancy Limited | Education | 2016 |
| Clwyd Car Auctions Limited | Wholesale & retail | 1981 |
| Clwyd House Ltd | Real estate | 2021 |
| Coachworks Hospitality Ltd | Professional & scientific | 2025 |
| Cobra Life Martial Arts Limited | Education | 2019 |
| Coda Investments (Holdings) Limited | Financial services | 2022 |
| Coda Investments Limited | Financial services | 2016 |
| Coffee Dream Ltd | Hospitality | 2025 |
| Coffee King (4017) Limited | Wholesale & retail | 2026 |
| Coffee King (4018) Limited | Wholesale & retail | 2026 |
| Coffee King (4020) Limited | Wholesale & retail | 2026 |
| Coffee King Limited | Wholesale & retail | 2016 |
| Cognix AI Ltd | Professional & scientific | 2026 |
| Colibri Scientific Limited | Professional & scientific | 2017 |
| Comco Health & Safety Ltd | Professional & scientific | 2019 |
| Commercial Industrial Domestic Solutions Ltd | Administrative & support | 2017 |
| Commercial Property Ltd | Real estate | 2003 |
| Comms Protect Ltd | Information & communication | 2026 |
| Community Impact Learning CIC | Education | 2022 |
| Compact Syngas Solutions Limited | Professional & scientific | 2020 |
| Compass Bioscience Group Limited | Financial services | 2018 |
| Complete Leisure Services Limited | Arts & recreation | 2021 |
| Compressed GAS Solutions Limited | Manufacturing | 2008 |