| Chapel-Oak Developments Limited | Construction | 2016 |
| Chapelhurst Properties Limited | Professional & scientific | 2003 |
| Chapest Ltd | Wholesale & retail | 2023 |
| Chapman 1980 Ltd | Other services | 2020 |
| Chapman Electrical Cardiff Limited | Construction | 2003 |
| Chapmans Peak Limited | Real estate | 2019 |
| Chapmanship Limited | Wholesale & retail | 2020 |
| Chappell MOT & Service Centre Ltd | Manufacturing | 2006 |
| Chappell Safety Services Limited | Public administration | 2012 |
| Chapter (Cardiff) Limited | Arts & recreation | 1971 |
| Chapter 3 Architects Ltd | Professional & scientific | 2019 |
| Chapter 5 Training & Coaching Ltd | Administrative & support | 2017 |
| Chapter Consultants Limited | Information & communication | 2013 |
| Chapter House (Parker Street) Residents Management Company Limited | Households | 2019 |
| Chapter One Books Ltd | Hospitality | 2018 |
| Chapter Three Transitions Ltd | Administrative & support | 2025 |
| Chapter Trading Limited | Wholesale & retail | 2007 |
| Chaque Ltd | Wholesale & retail | 2023 |
| Char Marketing Ltd | Professional & scientific | 2021 |
| Char PUB Co Ltd | Hospitality | 2021 |
| Chara-Todah Limited | Professional & scientific | 2014 |
| Character Building Consulting Limited | Health & social care | 2013 |
| Character Vaults Ltd | Information & communication | 2026 |
| Chareme Ltd | Other services | 2025 |
| Charged Solutions Ltd | Construction | 2019 |
| Charging Technology Company Ltd | Manufacturing | 2011 |
| Charginity Ltd | Financial services | 2018 |
| Chariot Electrical Ltd | Administrative & support | 2020 |
| Chariotbond Limited | Households | 1987 |
| Charis Construction Group Ltd. | Professional & scientific | 2024 |
| Charis Developments Ltd | Real estate | 2025 |
| Charis Hair Ltd | Education | 2019 |
| Charles Bread Limited | Manufacturing | 2016 |
| Charles Duke London Limited | Professional & scientific | 2016 |
| Charles Frank Finance Limited | Financial services | 2011 |
| Charles Gold Limited | Health & social care | 2019 |
| Charles James Interiors Ltd | Wholesale & retail | 2017 |
| Charles KAY Limited | Professional & scientific | 2019 |
| Charles Lawrence Ltd | Financial services | 2020 |
| Charles M Willie & Co. (Property) Limited | Transport & logistics | 2016 |
| Charles M.Willie & Co.(Shipping)Limited | Transport & logistics | 1938 |
| Charles Management Services Ltd | Real estate | 2019 |
| Charles Reid and Company Bookeeping Ltd | Professional & scientific | 2019 |
| Charles Rowley Interiors Ltd | Other services | 2018 |
| Charles Sturm Ltd | Manufacturing | 2020 |
| Charles Tottenham Limited | Wholesale & retail | 2017 |
| Charlesjames Ltd | Construction | 2015 |
| Charlie Lounge Group Ltd | Information & communication | 2023 |
| Charlie MAY Properties Ltd | Real estate | 2025 |
| Charlie Victor Two Holdings Ltd | Financial services | 2025 |
| Charlington Developments Ltd | Construction | 2024 |
| Charlmax Limited | Households | 2025 |
| Charlonet L.P. | | 2022 |
| Charlotta Elgh Design Ltd | Professional & scientific | 2023 |
| Charlotte Adele PR Ltd | Professional & scientific | 2025 |
| Charlotte Leyshon Family Law Limited | Professional & scientific | 2017 |
| Charlton Networks Limited | Information & communication | 1996 |
| Charltonsds Limited | Construction | 2019 |
| Charm Lettings Ltd | Real estate | 2024 |
| Charming Creations Limited | Wholesale & retail | 2015 |
| Charmuse Fashion House Limited | Professional & scientific | 2026 |
| Charmwood Group Ltd. | Wholesale & retail | 2016 |
| Charmyx Ltd | Wholesale & retail | 2025 |
| Charno Developments Ltd | Construction | 2021 |
| Charnwood Business Park (Nantgarw) Limited | Professional & scientific | 2003 |
| Charnwood Entertainments Ltd | Wholesale & retail | 2018 |
| Charro Dental Practice Ltd | Health & social care | 2008 |
| Charro Investments Limited | Real estate | 2017 |
| Charterblake Limited | Hospitality | 2011 |
| Charterboat Limited | Administrative & support | 2000 |
| Charterhouse (Bristol) Management Company Limited | Real estate | 2001 |
| Charterhouse Estate Planning & Investment Services Ltd | Financial services | 2006 |
| Chartist Hotels Limited | Hospitality | 2018 |
| Chartright Accountants Limited | Professional & scientific | 2016 |
| Chartsquare Ltd | Professional & scientific | 2021 |
| Chartsymbol Limited | Real estate | 1987 |
| Chartwell Business Support Limited | Professional & scientific | 2013 |
| Chartwell Court Management Limited | Households | 2004 |
| Chase Affinity Ltd | Real estate | 2020 |
| Chase Consultancy Limited | Information & communication | 2019 |
| Chase Delphi Recruitment Limited | Administrative & support | 2020 |
| Chase Healthcare Limited | Health & social care | 2014 |
| Chase International Partners Limited | Health & social care | 2012 |
| Chase Manhattan Properties Ltd | Construction | 1986 |
| Chase Manhattan Properties UK Limited | Construction | 2002 |
| Chase-Otis Ltd | Professional & scientific | 2021 |
| Chasegeek Limited | Information & communication | 2025 |
| Chasgood Ltd | Professional & scientific | 2022 |
| Chastity Heights Ltd | Information & communication | 2025 |
| Chateau DE LA Cazine Fractional 1 Ltd | Extraterritorial | 2023 |
| Chateau DE LA Cazine Fractional a Limited | Professional & scientific | 2011 |
| Chateau DE LA Cazine Fractional AA Limited | Professional & scientific | 2013 |
| Chateau DE LA Cazine Fractional AB Limited | Professional & scientific | 2013 |
| Chateau DE LA Cazine Fractional AC Limited | Professional & scientific | 2014 |
| Chateau DE LA Cazine Fractional AD Limited | Professional & scientific | 2013 |
| Chateau DE LA Cazine Fractional AE Limited | Professional & scientific | 2014 |
| Chateau DE LA Cazine Fractional AF Limited | Professional & scientific | 2014 |
| Chateau DE LA Cazine Fractional AK Limited | Professional & scientific | 2014 |
| Chateau DE LA Cazine Fractional AL Limited | Professional & scientific | 2014 |
| Chateau DE LA Cazine Fractional AM Limited | Professional & scientific | 2014 |