| Chess Environmental Limited | Construction | 2009 |
| Chester Hotel SW1 Limited | Hospitality | 2023 |
| Chesters (London Nwsc) Ltd | Hospitality | 2019 |
| Chestersway Ltd | Hospitality | 2011 |
| Chestnut E7 Management Limited | Extraterritorial | 2026 |
| Chestnut Gardens Entertainment Ltd | Hospitality | 2015 |
| Chestnut Gardens Property Ltd | Real estate | 2015 |
| Chetan Wholesalers Limited | Wholesale & retail | 1986 |
| Cheyne Cleaning & Maintenance Services Ltd | Administrative & support | 2001 |
| Chhc (UK) Limited | Wholesale & retail | 2014 |
| Chhokar Family Investment Company Limited | Financial services | 2017 |
| Chhokar Properties Limited | Real estate | 2017 |
| CHI Tech Limited | Information & communication | 2024 |
| Chib Properties Ltd | Real estate | 2020 |
| Chibsons Estates Limited | Real estate | 2026 |
| Chibsons LLP | | 2023 |
| Chick'N Shack Ltd | Hospitality | 2018 |
| Chicken 4 U Limited | Hospitality | 2012 |
| Chicken Corporation Holdings Limited | Extraterritorial | 2010 |
| Chicken Corporation Properties Limited | Real estate | 2010 |
| CHICKEN2GO Battersea Limited | Hospitality | 2018 |
| Chicky Afters Ltd | Hospitality | 2024 |
| Chigwell (London) PLC | Professional & scientific | 2015 |
| Chigwell Building & Joinery Ltd. | Construction | 2004 |
| Chigwell Electrical Services Ltd | Construction | 2025 |
| Chigwell Fire Protection Ltd | Construction | 2025 |
| Chigwell Motor Works Limited | Wholesale & retail | 2021 |
| Chigwell Window Centre PLC | Other services | 2013 |
| Chikoo Construction Services Ltd | Construction | 2025 |
| Child-Neurology.Net Limited | Education | 2019 |
| Children's Empire Limited | Real estate | 2017 |
| Children's Homes Quality Ltd | Professional & scientific | 2018 |
| Children’S Journey Ltd | Public administration | 2022 |
| Chill Cleans Ltd | Administrative & support | 2026 |
| Chilldog Ltd | Information & communication | 2024 |
| Chillfrost Ltd | Wholesale & retail | 2016 |
| Chilli N Chutney Limited | Hospitality | 2023 |
| Chilli's Burger & Grill Limited | Hospitality | 2020 |
| Chiltern Medical Services Ltd | Health & social care | 2008 |
| Chiltern Oakmont Ltd | Professional & scientific | 2019 |
| Chiltons Maintenance Limited | Real estate | 1969 |
| Chima Estates Ltd | Real estate | 2006 |
| China Aviation Services Limited | Manufacturing | 2018 |
| China Construction (UK) Limited | Construction | 2015 |
| China Horse Market Ltd | Wholesale & retail | 2026 |
| China With Love Limited | Hospitality | 2025 |
| Chindela by MJ CIC | Health & social care | 2026 |
| Chine Tography Limited | Other services | 2015 |
| Chinese Link Translations Ltd | Professional & scientific | 2013 |
| Chingford Smile Limited | Health & social care | 2015 |
| Chipatiso & Associates Ltd | Professional & scientific | 2026 |
| Chipatiso Associates LLP | | 2010 |
| Chippenham Construction Ltd | Construction | 2023 |
| Chirag Star Lights Limited | Information & communication | 2025 |
| Chiragh Homes Limited | Real estate | 2025 |
| Chiropavo Consulting Limited | Professional & scientific | 2025 |
| Chisti and Co Properties Ltd | Real estate | 2021 |
| Chocofay Ltd | Hospitality | 2025 |
| Chocoflakes Ltd | Hospitality | 2024 |
| Chodre Limited | Wholesale & retail | 2026 |
| Chohan Innovations Limited | Other services | 2018 |
| Choice Care Homes Limited | Professional & scientific | 1995 |
| Choice Mobile Solutions Ltd | Wholesale & retail | 2020 |
| CHOICE4U Solutions Ltd | Administrative & support | 2024 |
| Choise Wiggett Ltd | Other services | 2023 |
| Chola Intermediaries Limited | Professional & scientific | 2005 |
| Cholishnu Ltd | Information & communication | 2020 |
| Chomei Commerz Limited | Wholesale & retail | 2024 |
| Choob's Ltd | Information & communication | 2002 |
| Chopparas Group Ltd | Information & communication | 2024 |
| Chopra & SON Limited | Wholesale & retail | 2003 |
| Chopsticks & Chutney's CIC | Hospitality | 2025 |
| Chord Creatives Ltd | Information & communication | 2022 |
| Chosen Care Group Limited | Education | 2009 |
| Chotu Cosmetic Ltd | Wholesale & retail | 2026 |
| Choudhary Building Services Limited | Construction | 2024 |
| Choudhary Couriers Limited | Transport & logistics | 2025 |
| Choudhry Estates Limited | Real estate | 2021 |
| Chouxru London Ltd | Manufacturing | 2020 |
| Chowlams Wholesale Meat Supplier Ltd | Wholesale & retail | 2024 |
| Chris & LEO Limited | Real estate | 2021 |
| Chris - PIA Limited | Health & social care | 2015 |
| Chris Contracts Ltd | Construction | 2021 |
| Chris Drylining Interiors Ltd | Administrative & support | 2019 |
| Chris Scanlon Limited | Construction | 2023 |
| Chris Team Services Ltd | Construction | 2014 |
| Chriss Electrician Limited | Manufacturing | 2025 |
| Christ Chapel International Churches | Other services | 2015 |
| Christ Pillai Ltd | Wholesale & retail | 2014 |
| Christchurch Realty Limited | Real estate | 2023 |
| Christian Gallans Lovetennis Limited | Arts & recreation | 2011 |
| Christian Scotland-Williamson Ltd | Other services | 2019 |
| Christie's Properties Ltd | Real estate | 2025 |
| Christies Office Cleaning Services Limited | Administrative & support | 2013 |
| Christmas Spirit Film Festival Ltd | Arts & recreation | 2016 |
| Chriya Properties Ltd | Real estate | 2022 |
| Chrysalis at the Church Limited | Education | 2024 |
| Chrysalis Consultancy Services Ltd | Information & communication | 2021 |
| Chrysalis Nurseries Limited | Education | 2012 |
| CHS Car & Van Accident Repair Centre (London) Ltd | Manufacturing | 2017 |