| CG Eggington Ltd | Hospitality | 2023 |
| CGA Constructions Ltd | Professional & scientific | 2024 |
| CGF Security Systems Ltd | Administrative & support | 2023 |
| Cgpa Lift Installations Ltd | Manufacturing | 2019 |
| CGT Ltd | Education | 2019 |
| CH a Cars Ltd | Transport & logistics | 2025 |
| CH Assist Ltd | Information & communication | 2015 |
| CH Building Solutions Limited | Construction | 2015 |
| CH Motor Trade Ltd | Wholesale & retail | 2025 |
| CH Sabar Hussain's Business Limited | Professional & scientific | 2013 |
| CH Zaviyar Boss Ltd | Wholesale & retail | 2026 |
| Ch:Wa Logistics Limited | Transport & logistics | 2025 |
| Chacha Care Limited | Health & social care | 2022 |
| Chada Beauty Ltd | Other services | 2023 |
| Chadhaar Ltd | Wholesale & retail | 2026 |
| Chai @ Bundu Khan Ltd | Hospitality | 2024 |
| Chai Link Limited | Hospitality | 2025 |
| Chai Sylhet Limited | Hospitality | 2025 |
| Chaii Khana Limited | Wholesale & retail | 2021 |
| Chaiibella Ltd | Wholesale & retail | 2024 |
| Chaiikhana Express Ltd | Hospitality | 2024 |
| Chaiilala Limited | Hospitality | 2024 |
| Chainops Limited | Information & communication | 2022 |
| Chakwal Business Ltd | Professional & scientific | 2024 |
| Chalk Line Ltd | Arts & recreation | 2018 |
| Chalky Films Ltd | Information & communication | 2026 |
| Challney CC Ltd | Arts & recreation | 2025 |
| Challney Ltd | Professional & scientific | 2023 |
| Chalmers Plans Ltd | Information & communication | 2021 |
| Chalmor Limited | Manufacturing | 1952 |
| Chalton Engineering Limited | Professional & scientific | 2024 |
| Chalton Heights 1964 Limited | Extraterritorial | 2014 |
| Cham International Foods Limited | Wholesale & retail | 2019 |
| Chamber Cars Limited | Administrative & support | 2020 |
| Chamberlains (London) Limited | Real estate | 2022 |
| Chambers Goodwin and Partners Ltd | Real estate | 2003 |
| Chanaal Motor Trade Ltd | Wholesale & retail | 2023 |
| Chandi Contractor Ltd | Construction | 2023 |
| Chandibuild Ltd | Real estate | 2024 |
| Chandos House Residents Management Company Limited | Households | 2011 |
| Change UR Life CIC | Health & social care | 2020 |
| Change Your Car Ltd | Wholesale & retail | 2025 |
| Changing the Curve Ltd | Professional & scientific | 2015 |
| Channel Services Limited | Health & social care | 2008 |
| Channel Shakespeare Limited | Information & communication | 2017 |
| Chantelle Active Limited | Wholesale & retail | 2026 |
| Chapel Close Deanshanger Ltd | Professional & scientific | 2022 |
| Chapel Co Music Ltd | Information & communication | 2025 |
| Chapel Green Properties Ltd | Real estate | 2019 |
| Chapel LN Limited | Hospitality | 2019 |
| Chapta Support Ltd | Health & social care | 2024 |
| Charan Construction Ltd | Construction | 2017 |
| Chardsonrite UK Limited | Wholesale & retail | 2025 |
| Charel Ltd | Other services | 2020 |
| Chariot Properties Ltd | Real estate | 2014 |
| Charis Ronel Ltd | Health & social care | 2023 |
| Charks Limited | Health & social care | 2017 |
| Charles Baron Properties Ltd | Real estate | 2024 |
| Charley and Roger Associates Limited | Information & communication | 2025 |
| Charlgrave Construction Limited | Construction | 2017 |
| Charlie & LEO Ltd. | Financial services | 2012 |
| Charlie & LEO Properties Ltd | Real estate | 2017 |
| Charlie's Bar & Grill Ltd | Hospitality | 2026 |
| Charliocare Limited | Health & social care | 2023 |
| Charlotte Contractors Ltd | Wholesale & retail | 2025 |
| Charlotte Court RTM Company Limited | Households | 2018 |
| Charlwood Properties Ltd | Real estate | 2023 |
| Charlzy Limited | Health & social care | 2014 |
| Charmcraze Ltd | Wholesale & retail | 2025 |
| Charoasis Ltd | Wholesale & retail | 2024 |
| Charoite Limited | Administrative & support | 2014 |
| Charon RF Ltd | Professional & scientific | 2019 |
| Chart Property Holdings Limited | Real estate | 2018 |
| Chart Property Management LLP | | 2017 |
| Chartwell Homes Limited | Extraterritorial | 2023 |
| Chartwich Limited | Administrative & support | 2001 |
| Chateau Charmant Ltd | Hospitality | 2025 |
| Chatgaon Express Ltd | Hospitality | 2019 |
| Chaucer Estate Planning Limited | Construction | 1998 |
| Chaucer Investments Ltd | Real estate | 2013 |
| Chaudhry Business Services Ltd | Administrative & support | 2025 |
| Chaudhry Retail Services Limited | Hospitality | 2004 |
| Chauffeur & High Performance Luxury Renting Ltd | Administrative & support | 2025 |
| Chauffeur Driven Ltd | Administrative & support | 2014 |
| Chauhan Studios Ltd | Other services | 2016 |
| Chaul END Children's Centre Nursery Limited | Education | 2009 |
| Chaul END Property Management Limited | Administrative & support | 2003 |
| Chautels Consultancy Ltd | Professional & scientific | 2025 |
| CHD Consultancy Limited | Professional & scientific | 2012 |
| CHD Contracts Limited | Other services | 2021 |
| CHD Homes Ltd | Construction | 2024 |
| Chechy Services Limited | Wholesale & retail | 2024 |
| Checkalow Contracts Ltd | Construction | 2016 |
| Checkmate Cafe & Grill Ltd | Hospitality | 2022 |
| Cheema Jarsh Global Trading Limited | Information & communication | 2026 |
| Cheema Transportation Limited | Transport & logistics | 2026 |
| Cheemaa Properties Ltd | Real estate | 2021 |
| Chef Express Herts Ltd | Hospitality | 2016 |
| Chef Silviu Ltd | Hospitality | 2018 |
| Chef Tuoyo Ltd | Hospitality | 2024 |