| Christ Church Liverpool | Other services | 2008 |
| Christakis Boxpark Limited | Hospitality | 2025 |
| Christakis Ltd | Hospitality | 2019 |
| Christchurch Commercials Ltd | Wholesale & retail | 2026 |
| Christendom Interactive Ltd. | Information & communication | 2025 |
| Christian Co-Ownership in Tenerife 366 Limited | Real estate | 1985 |
| Christian Fellowship School Trust | Education | 2000 |
| Christian Foley Music Ltd | Arts & recreation | 2023 |
| Christian Schools Limited | Education | 1964 |
| Christian West Properties Ltd | Real estate | 2022 |
| Christian's True Spirit (CTS) UK CIC | Health & social care | 2023 |
| Christianson Property Capital Limited | Real estate | 2014 |
| Christina Louise Limited | Health & social care | 2019 |
| Christine Fallon Limited | Professional & scientific | 2024 |
| Christine Martin & Co Limited | Professional & scientific | 2014 |
| Christine Toner Limited | Professional & scientific | 2016 |
| Christmas in a Box Group Ltd | Wholesale & retail | 2025 |
| Christmas Outlet Limited | Wholesale & retail | 2024 |
| Christmas Toy Limited | Extraterritorial | 2000 |
| Christobryan Ltd | Real estate | 2019 |
| Christopher Cotton LP | | 2011 |
| Christopher James Lettings Ltd | Real estate | 2015 |
| Christopher Moss Studio Ltd | Information & communication | 2024 |
| Christopher Wells Stellar Private Company 1 Trading Limited | Professional & scientific | 2022 |
| Christopher Wells Stellar Private Company 2 Trading Limited | Professional & scientific | 2022 |
| Christoval Limited | Arts & recreation | 2015 |
| Chrixie Ltd | Real estate | 2024 |
| Chroda Developments Limited | Real estate | 2017 |
| Chroda Limited | Other services | 2018 |
| Chrome P Properties Ltd | Real estate | 2025 |
| Chrometrics Limited | Information & communication | 2023 |
| Chronicle Pictures Ltd | Professional & scientific | 2025 |
| Chrono Connect Ltd | Wholesale & retail | 2019 |
| Chronomac Watches Ltd | Wholesale & retail | 2025 |
| Chronos 11 Ltd | Wholesale & retail | 2026 |
| Chronos International Limited | Other services | 2020 |
| Chrysalis Brokerage Ltd | Professional & scientific | 2023 |
| Chrysalis People Solutions Ltd | Administrative & support | 2017 |
| Chrysowood Trading Ltd | Wholesale & retail | 2024 |
| Chrystal Nails & Spa ST Helens Ltd | Other services | 2024 |
| CHS Group (NW) Ltd | Financial services | 2022 |
| CHS Properties (NW) Ltd | Real estate | 2022 |
| CHS Supplies Ltd | Wholesale & retail | 2024 |
| Chubb Site Services Ltd | Administrative & support | 2020 |
| Chubby's Limited | Hospitality | 2024 |
| Chuchu Boba Ltd | Hospitality | 2026 |
| Chughes Consultancy Ltd | Information & communication | 2024 |
| Chung WAH Supermarket Limited | Wholesale & retail | 2015 |
| Chung Wang Limited | Wholesale & retail | 2010 |
| Chunyi Limited | Hospitality | 2026 |
| Church Close Court (Formby) Management Co. Limited | Households | 1979 |
| Church in Centre, Kirkby | Other services | 2014 |
| Church View (Aigburth) Management Limited | Households | 2002 |
| Church View Car Sales Ltd | Wholesale & retail | 2022 |
| Church Walk Apartments Ltd | Real estate | 2023 |
| Church Walk Lettings Ltd | Real estate | 2026 |
| Church Water Investment Limited | Financial services | 2017 |
| Churches Together in Great Crosby Charitable Trust | Hospitality | 2005 |
| Churchfields - Birkdale Ltd | Households | 2021 |
| Churchgate Specialist Ltd | Health & social care | 2025 |
| Churchill Sloan Limited | Administrative & support | 2015 |
| Churchtown Healthcare Limited | Wholesale & retail | 2011 |
| Churrasco Grill Restaurant Limited | Hospitality | 2019 |
| Churroholic Ltd | Wholesale & retail | 2025 |
| Churros Newcastle Ltd | Hospitality | 2026 |
| CHW North West Properties Limited | Real estate | 2017 |
| CHY@98 Ltd | Hospitality | 2020 |
| Cian Ltd | Administrative & support | 2020 |
| Ciarynthe Ltd | Manufacturing | 2025 |
| Cibus in Fonte Limited | Hospitality | 2022 |
| Cica Property Limited | Real estate | 2016 |
| Cicek Consultancy Ltd | Other services | 2005 |
| Cicsys Ltd | Information & communication | 2007 |
| Cide Power Ltd | Construction | 2025 |
| Cieron Webb Developments Limited | Construction | 2025 |
| Cietrus Food Limited | Wholesale & retail | 2023 |
| Cietrus Limited | Wholesale & retail | 2017 |
| Cietrus OUD Ltd | Wholesale & retail | 2026 |
| CIF (London) Ltd | Other services | 2020 |
| CIF Consulting Limited | Information & communication | 2017 |
| CIF Group Limited | Financial services | 2022 |
| CIF Property Ltd | Real estate | 2024 |
| Cifr Limited | Information & communication | 2023 |
| Cigam Productions Ltd. | Arts & recreation | 2013 |
| Ciglow Industrial Services Limited | Wholesale & retail | 2005 |
| Cinchbytes Ltd | Information & communication | 2025 |
| Cinderhouse Limited | Real estate | 2002 |
| Cinders Party Dress Limited | Wholesale & retail | 2018 |
| Cinema Nation C.I.C. | Information & communication | 2013 |
| Cinetecture Ltd | Information & communication | 2007 |
| Cinetico Fitness Centre Ltd | Arts & recreation | 2021 |
| Cinnamon Building RTM Company Limited | Households | 2022 |
| Cinnamon Formby Ltd | Hospitality | 2021 |
| Cinnamon Grill Limited | Hospitality | 2026 |
| Cinnamon Indian Ltd | Hospitality | 2022 |
| CIO Advice Ltd | Information & communication | 2026 |
| Cios Ventures Ltd | Professional & scientific | 2023 |
| Cipc Investment Ltd | Real estate | 2025 |
| Ciprian Iordache Ltd | Construction | 2023 |
| Ciprianac Transpotr Ltd | Transport & logistics | 2024 |