| CH Broadnook P2 LLP | | 2024 |
| CH Business Links Ltd | Information & communication | 2025 |
| CH Business Services Ltd | Professional & scientific | 2020 |
| Chabeaux Ltd | Information & communication | 2020 |
| Chaceley Ltd | Professional & scientific | 2026 |
| Chacomm Limited | Other services | 1989 |
| Chadbourn Mews Limited | Construction | 2014 |
| Chadlington Holdings Limited | Financial services | 2021 |
| Chahall Holdings Limited | Financial services | 2023 |
| Chahall Management Limited | Hospitality | 2012 |
| Chailey Consulting Ltd | Professional & scientific | 2026 |
| Chain Networks Limited | Information & communication | 2010 |
| Chainlabs Consulting Ltd | Information & communication | 2023 |
| Chak 70 Limited | Hospitality | 2024 |
| Chakapay Limited | Information & communication | 2020 |
| Chalfont Coaches of Harrow Limited | Transport & logistics | 1971 |
| Chalk Valley Limited | Hospitality | 2013 |
| Chalkton Associates Ltd | Administrative & support | 2010 |
| Challenge Park LLP | | 2003 |
| Challenger Communications Limited | Professional & scientific | 2001 |
| Challis Plumbing and Heating Ltd | Construction | 2022 |
| Chama Brazilian Rodizio Ltd | Hospitality | 2025 |
| Chamber Health and Wellbeing Limited | Other services | 2016 |
| Chamberlain Design Ltd | Professional & scientific | 2021 |
| Chamberlain Plastics International Limited | Manufacturing | 2012 |
| Chambers Electrical Services Limited | Construction | 1998 |
| Chambers Landscapes Limited | Administrative & support | 2003 |
| Chambers Tech Holdings Limited | Financial services | 2023 |
| Chameleon Reprographics Limited | Extraterritorial | 1988 |
| Champion Body Ltd | Wholesale & retail | 2020 |
| Champion Pizza Ltd | Hospitality | 2020 |
| Champions Subsidiaries Limited | Real estate | 2026 |
| Championscreatornetwork Limited | Information & communication | 2025 |
| Chancel Close Management Limited | Households | 2025 |
| Chancery Footwear Limited | Manufacturing | 1984 |
| Chaneco Limited | Wholesale & retail | 2018 |
| Changania CIC | Hospitality | 2024 |
| Change 2 Limited | Professional & scientific | 2002 |
| Change Effect Limited | Information & communication | 2010 |
| Changing Futures Limited | Education | 2022 |
| Chantel Maria Services Limited | Arts & recreation | 2023 |
| Chantelle Cameron Foundation CIC | Education | 2025 |
| Chaos Theory Events Ltd | Arts & recreation | 2020 |
| Chaov Auto Polish and Detailing Ltd | Wholesale & retail | 2025 |
| Chapclad Ltd | Construction | 2008 |
| Chapel Field Management 27 Ltd | Construction | 2026 |
| Chapel Joinery Limited | Manufacturing | 2008 |
| Chaperones 4 Kidz Ltd | Arts & recreation | 2018 |
| Chapman Architectural Limited | Professional & scientific | 2005 |
| Chapman Education Consulting Ltd | Professional & scientific | 2008 |
| Chappell Outsourcing Limited | Administrative & support | 2020 |
| Chapter and Charm Limited | Wholesale & retail | 2024 |
| Charbell Holdings Limited | Financial services | 2022 |
| Charem Commercial Services Limited | Professional & scientific | 2013 |
| Charge UP EV Ltd | Real estate | 2017 |
| Charing Meats (Kent) Limited | Wholesale & retail | 2014 |
| Charisma International Ltd | Information & communication | 2019 |
| Charles - Chambers Consultancy Ltd | Professional & scientific | 2025 |
| Charles Acquah Limited | Hospitality | 2019 |
| Charles B & Company Limited | Construction | 2010 |
| Charles B Design and Build Ltd | Construction | 2025 |
| Charles Briggs Limited | Wholesale & retail | 2008 |
| Charles Herring and Sons Limited | Transport & logistics | 2017 |
| Charles Martin Risk Solutions Limited | Financial services | 2020 |
| Charles Mechanical Services Ltd | Construction | 2025 |
| Charlotte Hastings Consulting Ltd | Professional & scientific | 2021 |
| Charlotte Mackaness Limited | Professional & scientific | 2022 |
| Charlotte MAY VA Ltd | Administrative & support | 2023 |
| Charlotte Street 2 Limited | Real estate | 2019 |
| Charlotte Street Limited | Real estate | 2018 |
| Charltec Electrical Limited | Construction | 2015 |
| Charlton House Limited | Real estate | 2000 |
| Charm & Bricks Limited | Real estate | 2023 |
| Charmark Properties Limited | Real estate | 1910 |
| Charme Interior Art Ltd | Construction | 2016 |
| Charming Designs Ltd | Wholesale & retail | 2020 |
| Charming Fashion Ltd | Manufacturing | 2023 |
| Charms Health Care Limited | Health & social care | 2022 |
| Charnwood Mews Management Company Limited | Households | 1998 |
| Charterhouse Estates Limited | Construction | 2010 |
| Charters Disposals Limited | Construction | 2010 |
| Chartnall Limited | Information & communication | 2010 |
| Chartwell Estates Limited | Real estate | 2019 |
| Chase & Co. Investments Limited | Wholesale & retail | 2025 |
| Chase Environmental Limited | Extraterritorial | 2003 |
| Chase Park Landscapes Ltd | Professional & scientific | 2026 |
| Chase Side Motors Ltd | Wholesale & retail | 2013 |
| Chatfield Haulage Limited | Transport & logistics | 2026 |
| Chatiq Ltd | Information & communication | 2024 |
| Chauhan & Putjatins Estates Limited | Construction | 2018 |
| Chauhan Family Holdings Limited | Financial services | 2019 |
| Chayce Properties Ltd | Construction | 2021 |
| Chazown Property Group Ltd | Real estate | 2025 |
| CHB Homes Limited | Real estate | 2025 |
| Cheafrica Limited | Financial services | 2018 |
| Check My Body Health Limited | Professional & scientific | 2020 |
| Checkers Industrial Safety Products UK Limited | Extraterritorial | 2011 |
| Checkme-In Limited | Information & communication | 2025 |
| Checksys Euro Limited | Wholesale & retail | 2010 |
| Cheddar View Limited | Construction | 2015 |