| Catelas Limited | Information & communication | 2016 |
| Caterfish Limited | Wholesale & retail | 2007 |
| Catering Design Group Limited | Other services | 1990 |
| Cathain Ltd | Professional & scientific | 2025 |
| Catherine Robinson Logistics Consultancy Limited | Administrative & support | 2014 |
| Catherine Wood Consultancy Ltd | Administrative & support | 2022 |
| Catie Gosling Consulting Ltd | Professional & scientific | 2018 |
| Catlett Carpentry Ltd | Administrative & support | 2023 |
| Cato Mortgages Ltd | Information & communication | 2023 |
| Caton Aerospace Services Limited | Professional & scientific | 2016 |
| Causeway Creative Ltd | Other services | 2024 |
| Causeway Electrical Limited | Construction | 2017 |
| Causeway Hand Car Wash Ltd | Administrative & support | 2023 |
| Causeway Home Improvement Group Limited | Extraterritorial | 2016 |
| Cavalier (Warrington) Ltd | Other services | 2017 |
| Cavallo Law Limited | Professional & scientific | 2017 |
| Cavau Cabana Ltd | Transport & logistics | 2022 |
| Cave Talk Limited | Professional & scientific | 2016 |
| Cavella Global Limited | Wholesale & retail | 2026 |
| Cavella Services Ltd | Administrative & support | 2024 |
| Caven Consulting Ltd | Professional & scientific | 2023 |
| Caverswall English China Company Limited | Manufacturing | 1994 |
| Cavity Limited | Administrative & support | 2017 |
| Cawley Enterprise Ltd | Professional & scientific | 2020 |
| Caxton Technology Ltd | Wholesale & retail | 2009 |
| Cayenne Foods Limited | Hospitality | 2013 |
| Cazador Associates Ltd | Professional & scientific | 2021 |
| CB Communications Limited | Professional & scientific | 2018 |
| CB Consultancy (NW) Limited | Other services | 2016 |
| CB Engineering (Northwest) Limited | Administrative & support | 2013 |
| CB Fitness (Northwich) Limited | Arts & recreation | 2022 |
| CB Mechanical Services Ltd | Administrative & support | 2025 |
| CB Project Consultancy & Solutions Ltd | Information & communication | 2016 |
| CB Property Group NW Limited | Real estate | 2025 |
| CB Tattoos Ltd | Arts & recreation | 2024 |
| Cb&C Travel Ltd | Transport & logistics | 2026 |
| CBA MAN Ltd | Construction | 2024 |
| Cbacc Ltd | Real estate | 2019 |
| CBC Warrington Limited | Transport & logistics | 2017 |
| CBJ Investments Limited | Real estate | 2002 |
| CBL Procurement Services Limited | Administrative & support | 2011 |
| CBM Building Limited | Construction | 2024 |
| Cbreezy Ltd | Transport & logistics | 2025 |
| Cbrr Limited | Administrative & support | 2021 |
| CC Change LAB Limited | Administrative & support | 2025 |
| CC Civil Engineering Ltd | Administrative & support | 2023 |
| CC Piping Engineering Limited | Administrative & support | 2023 |
| CC Project Controls Ltd | Professional & scientific | 2025 |
| CCA Construction Limited | Professional & scientific | 2018 |
| Ccdr Consultants Ltd | Professional & scientific | 2016 |
| CCF Marketing Ltd | Professional & scientific | 2020 |
| Ccfed Limited | Real estate | 2025 |
| CCI Photonics Limited | Manufacturing | 2023 |
| Ccid Ltd | Information & communication | 2020 |
| CCJ Construction Management Services Ltd | Construction | 2023 |
| CCL Capital Partners Ltd | Other services | 2018 |
| Cclpm Limited | Real estate | 2024 |
| CCM Events Limited | Wholesale & retail | 2018 |
| CCP Commercial Consultants Limited | Administrative & support | 2015 |
| CCS Consultants Limited | Administrative & support | 2023 |
| CCS Investment Properties Limited | Real estate | 2003 |
| Ccso Investment Limited | Real estate | 2024 |
| Ccuff Contract Services Limited | Administrative & support | 2024 |
| CD CE UK Bess Limited | Financial services | 2025 |
| CD CE UK Holdco Limited | Financial services | 2023 |
| CD CE UK Holdings Limited | Financial services | 2023 |
| CD CE UK Limited | Financial services | 2023 |
| CD CE UK Solar Limited | Financial services | 2025 |
| CD Inspire Ltd | Construction | 2024 |
| CD Management Consultancy Limited | Administrative & support | 2019 |
| CD Royle Properties Ltd | Real estate | 2024 |
| CDA Safety Limited | Financial services | 2024 |
| CDC Logistic Consulting Limited | Administrative & support | 2018 |
| CDC Services Ltd | Manufacturing | 2026 |
| Cdec Solutions Limited | Manufacturing | 2016 |
| Cdlc Consulting Limited | Other services | 2016 |
| CDM Compliance Consultants Limited | Administrative & support | 2024 |
| CDM Developments (North West) Limited | Construction | 2005 |
| CDM Investments Limited | Real estate | 2007 |
| CDM Scaffolding Services (1994) Limited | Construction | 2002 |
| CDM Services NW Ltd | Professional & scientific | 2018 |
| CDN Construction Consultants Ltd | Administrative & support | 2023 |
| CDO Marine Limited | Administrative & support | 2015 |
| CDP Consultancy Ltd | Professional & scientific | 2019 |
| CDP Process Consultants Limited | Professional & scientific | 2017 |
| CDP Telecom Design Limited | Information & communication | 2013 |
| CDR Tuition and Education Limited | Administrative & support | 2020 |
| CDW Design Limited | Professional & scientific | 2018 |
| Cdwright Consulting Ltd | Information & communication | 2014 |
| CE Europe UK Holdings Limited | Financial services | 2023 |
| CE Global Limited | Information & communication | 2007 |
| Cecj Limited | Administrative & support | 2022 |
| Cedab Ltd | Transport & logistics | 2017 |
| Cedar Nova Limited | Professional & scientific | 2026 |
| Cedar Residential Property Ltd | Real estate | 2026 |
| Cedarberg Engineering Limited | Administrative & support | 2010 |
| Cedars Therapy Limited | Health & social care | 2023 |
| Cedexa Investments Ltd | Construction | 2002 |
| Cedric Andries Limited | Other services | 2018 |
| CEE N CEE Inns (Dog and Partridge) Ltd | Hospitality | 2026 |