| Creation Hospitality Ltd | Hospitality | 2026 |
| Creative B-Spoke Funding Ltd | Financial services | 2021 |
| Creative Bathroom Solutions Limited | Wholesale & retail | 2019 |
| Creative Business Energy Ltd | Professional & scientific | 2020 |
| Creative Business Limited | Manufacturing | 2022 |
| Creative Circle Cardiff C.I.C. | Arts & recreation | 2024 |
| Creative Club GRP Limited | Wholesale & retail | 2020 |
| Creative Construction & Design Ltd | Construction | 2025 |
| Creative Cultural Education CIC | Education | 2014 |
| Creative Designs & Contracts Ltd | Administrative & support | 2019 |
| Creative Edge FX Limited | Information & communication | 2024 |
| Creative Expo Limited | Administrative & support | 2013 |
| Creative Exterior Solutions Ltd | Professional & scientific | 2018 |
| Creative JET Agency Ltd | Professional & scientific | 2024 |
| Creative Kitchen Caterers Limited | Hospitality | 2013 |
| Creative Legal Solutions Solicitors Ltd | Extraterritorial | 2019 |
| Creative Loop Limited | Professional & scientific | 2013 |
| Creative Marketing Ltd | Professional & scientific | 2017 |
| Creative Mindset Media Ltd | Professional & scientific | 2019 |
| Creative Mynds Cymru CIC | Health & social care | 2026 |
| Creative Path Group Limited | Professional & scientific | 2017 |
| Creative People Consulting Ltd | Professional & scientific | 2025 |
| Creative Property (Cardiff) Limited | Real estate | 2003 |
| Creative Property Education Limited | Education | 2018 |
| Creative Property Solutions Ltd | Real estate | 2018 |
| Creative Republic of Cardiff Ltd | Hospitality | 2017 |
| Creative Sector Solutions Limited | Professional & scientific | 2020 |
| Creative Service Management Ltd | Extraterritorial | 2017 |
| Creative Spark Electrical Ltd | Construction | 2019 |
| Creative Tea Bullring Limited | Wholesale & retail | 2017 |
| Creative Tea White City Limited | Hospitality | 2017 |
| Creative Visuals Ltd | Information & communication | 2024 |
| Creative Ways Limited | Other services | 2024 |
| Creativebuild Labs Ltd | Professional & scientific | 2019 |
| Creatively Brave Art Limited | Arts & recreation | 2015 |
| Creator Data Ltd | Information & communication | 2024 |
| Creator LED Brands Ltd | Professional & scientific | 2026 |
| Creatorship Ltd | Administrative & support | 2021 |
| Creatrix Consulting Engineers Limited | Construction | 2020 |
| Credex Capital Ltd | Financial services | 2011 |
| Credit Asset Management and Investments Ltd | Financial services | 2025 |
| Credit Canary Limited | Information & communication | 2022 |
| Credit Control Consultancy Limited | Professional & scientific | 2024 |
| Creditsafe Business Solutions Limited | Administrative & support | 1999 |
| Creditsafe First Limited | Information & communication | 2012 |
| Creditsafe Information Services Limited | Information & communication | 2012 |
| Creditsafe Limited | Information & communication | 2012 |
| Creditsafe Services Limited | Administrative & support | 2019 |
| Creditsafe UK Holding Limited | Administrative & support | 2019 |
| Creditsafe UK Limited | Administrative & support | 2012 |
| Crediva Limited | Information & communication | 2008 |
| Credo Capitel Limited | Financial services | 2020 |
| Credu Charity Ltd | Arts & recreation | 2013 |
| Credulum Ltd | Real estate | 2019 |
| Creed's Dog Grooming Limited | Wholesale & retail | 2021 |
| Creffield Consultancy Limited | Financial services | 2000 |
| Cregneash Capital Ltd | Financial services | 2018 |
| Creigau Castings Limited | Wholesale & retail | 1971 |
| Creighton Griffiths (Construction) Limited | Construction | 1964 |
| Creighton Griffiths (Investments) Limited | Construction | 1963 |
| Creigiau Farm Estate Limited | Agriculture & fishing | 2019 |
| Creigiau Investments Limited | Real estate | 1994 |
| Creigiau Travel Limited | Transport & logistics | 1996 |
| Crelith Ltd | Wholesale & retail | 2025 |
| Cremona House Ltd | Real estate | 2020 |
| Creo Digital Ltd | Information & communication | 2018 |
| Creo Group Holdings Ltd | Financial services | 2020 |
| Creo Interactive Ltd | Information & communication | 1999 |
| Creo Skills Limited | Professional & scientific | 2013 |
| Creo Studio Ltd | Information & communication | 2024 |
| Crep Resurrect Ltd | Administrative & support | 2025 |
| Creps King Ltd | Arts & recreation | 2019 |
| Crescat Estate Ltd | Hospitality | 2026 |
| Crescendo Music Ltd | Wholesale & retail | 2026 |
| Crescent Asset Management Ltd | Financial services | 2018 |
| Crescent College Limited | Professional & scientific | 2019 |
| Crescent Court (Cardiff) Residents Co. Limited | Households | 1970 |
| Crescent Hill Limited | Professional & scientific | 1987 |
| Crescent Llandaff Residents Company Limited(The) | Households | 1985 |
| Crescent Recruiters Ltd | Administrative & support | 2018 |
| Crescent Sound LAB Ltd | Information & communication | 2026 |
| Crescent Tech Limited | Professional & scientific | 2025 |
| Crescent Trading Ltd | Wholesale & retail | 2018 |
| Crescentbrook Limited | Hospitality | 2014 |
| Crescentshire Ltd | Real estate | 2025 |
| Crescere Investments Ltd | Real estate | 2016 |
| Creso Capital Limited | Professional & scientific | 2017 |
| Cress Waterman Limited | Administrative & support | 2011 |
| Cressel Ltd | Wholesale & retail | 2021 |
| Crest Coastal Ltd | Real estate | 2021 |
| Crest Recruitment Limited | Other services | 2017 |
| Crest South West Ltd | Financial services | 2009 |
| Cresta Caterers Limited | Hospitality | 2020 |
| Crestalign Ltd | Information & communication | 2023 |
| Crestfields Support Services Limited | Professional & scientific | 2010 |
| Crestfirst Limited | Construction | 1992 |
| Crestle Limited | Administrative & support | 2019 |
| Crestora Builders Ltd | Construction | 2026 |
| Crests Estates Ltd | Real estate | 2023 |
| Crestview Property Maintenance Ltd | Administrative & support | 2021 |