| Cheartaigh Limited | Arts & recreation | 2025 |
| Chec Planning Limited | Professional & scientific | 2012 |
| CHECK4CANCER Ltd | Health & social care | 2014 |
| Checked Inn Limited | Real estate | 2018 |
| Checkit Europe Limited | Information & communication | 2014 |
| Checkit PLC | Financial services | 1948 |
| Checkit UK Limited | Information & communication | 1990 |
| Chee Cardiology Limited | Health & social care | 2025 |
| Cheers&Chill Limited | Hospitality | 2023 |
| Cheery Industry Limited | Wholesale & retail | 2024 |
| Cheese + Limited | Extraterritorial | 2013 |
| Chell Instruments Limited | Manufacturing | 1992 |
| Chelsea Composites Ltd. | Wholesale & retail | 2012 |
| Chelsea Swift Trading Limited | Wholesale & retail | 2025 |
| Chelushi Limited | Manufacturing | 2023 |
| Chelwood Drive Management Company Limited | Households | 2003 |
| Chemega Limited | Extraterritorial | 1987 |
| Chemical Intelligence Limited | Professional & scientific | 2012 |
| Chemivit International Co., Ltd. | Extraterritorial | 2010 |
| Chemlyte Solutions Co., Ltd | Wholesale & retail | 2018 |
| Chempharmaserve Limited | Professional & scientific | 2004 |
| Chempute Ltd | Professional & scientific | 2019 |
| Chen Jing International Trading Co., Ltd | Extraterritorial | 2021 |
| Chen Ying Limited | Professional & scientific | 2025 |
| Cheney & Bowen Holdings Ltd | Financial services | 2025 |
| Cheng XIN International Industry Co., Ltd | Wholesale & retail | 2023 |
| Chengda Trading Limited | Wholesale & retail | 2025 |
| Chenkai Global Trade Ltd | Wholesale & retail | 2024 |
| Chenrui Global Ltd | Extraterritorial | 2025 |
| Chensheng Ecommerce Limited | Wholesale & retail | 2025 |
| Chenxin Refractories Co., Ltd | Manufacturing | 2022 |
| Cherhill View Management Company (Calne) Limited | Real estate | 2015 |
| Cheri Alliance C.I.C. | Other services | 2024 |
| Chericorp Ltd | Professional & scientific | 2026 |
| Cherlyn Electronics Limited | Manufacturing | 1973 |
| Cherry Close (Milton) Freehold Limited | Real estate | 1997 |
| Cherry Education Consulting Limited | Education | 2018 |
| Cherry Hinton Accounting Ltd | Professional & scientific | 2022 |
| Cherry Hinton Barbers Ltd | Other services | 2026 |
| Cherry Hinton Dental Centre Limited | Health & social care | 2009 |
| Cherry Hinton Kebab Ltd | Hospitality | 2025 |
| Cherry Hinton Management Company Limited | Households | 2021 |
| Cherry Hinton Road Express Ltd | Wholesale & retail | 2026 |
| Cherry Hinton Road Management Company Limited | Households | 1993 |
| Cherry Tree Renovation Cambridge Ltd | Construction | 2024 |
| Cherry Trees Apartments Service Company Limited | Real estate | 2020 |
| Cherry Valley Ltd | Hospitality | 2017 |
| Cherrybase Properties Limited | Real estate | 1994 |
| Cherryfield UK Exchange Limited | Hospitality | 2017 |
| Cherryholt Holdings Limited | Real estate | 2008 |
| Cheryl Baird Consultancy Ltd | Professional & scientific | 2026 |
| Cheryl Harradine Travel Limited | Administrative & support | 2017 |
| Chery’S Nail & Spa Ltd | Other services | 2026 |
| Cheshire's Composites Ltd | Manufacturing | 2019 |
| Chess for Kids Limited | Education | 1999 |
| Chesterford Homecare Limited | Health & social care | 2015 |
| Chesterford House Limited | Real estate | 2023 |
| Chesterford Mill Freehold Limited | Households | 2007 |
| Chesterford Mill Management Limited | Households | 1987 |
| Chesterman Developments Limited | Hospitality | 2017 |
| Chesterton Bowls Club Limited | Arts & recreation | 1967 |
| Chesterton Enterprise Development Limited | Real estate | 2001 |
| Chesterton Enterprise Development Trading Limited | Construction | 2026 |
| Chesterton Grocers Limited | Real estate | 2020 |
| Chesterton Nephthys Ltd | Health & social care | 2024 |
| Chesterton Prestige Limited | Wholesale & retail | 2019 |
| Cheviot House Limited | Information & communication | 2008 |
| CHG Tedder Way Ltd | Construction | 2026 |
| Chibio Informatics Limited | Information & communication | 2006 |
| Chichester House Management (Cambridge) Limited | Households | 1993 |
| Chick Farm Limited | Wholesale & retail | 2024 |
| Chicken Rush Limited | Hospitality | 2022 |
| Chickenguard Limited | Manufacturing | 2013 |
| Chifria Ltd | Information & communication | 2021 |
| Child Light Limited | Education | 1994 |
| Child-To-Child | Education | 2013 |
| Childerley LLP | | 2012 |
| Childrens Allergy Cambridge Ltd | Health & social care | 2024 |
| Childrens Cottage Nurseries Ltd | Education | 2023 |
| Childs Plumbing and Heating Limited | Construction | 2015 |
| Chile Chemical Mining (Europe) Co., Ltd | Mining & quarrying | 2025 |
| Chile United Mining (Europe) Co., Ltd. | Extraterritorial | 2025 |
| Chilford Pharma Ltd | Professional & scientific | 2018 |
| Chilli Finance Limited | Administrative & support | 2021 |
| Chillidown Group Ltd | Hospitality | 2023 |
| Chiltern Assessment Limited | Administrative & support | 2017 |
| Chiltern Hall Properties Limited | Professional & scientific | 2016 |
| Chimaera Imaging LLP | | 2010 |
| Chimble Construction Ltd. | Construction | 2011 |
| China Agricultural Group International Agricultural Supplies (UK) Development Co., Ltd | Mining & quarrying | 2025 |
| China Alpha Marine Co., Ltd | Wholesale & retail | 2023 |
| China Blue Ocean Trading Limited | Wholesale & retail | 2022 |
| China Harbor Marine Co., Ltd | Wholesale & retail | 2022 |
| China Huatong Group Ltd | Extraterritorial | 2025 |
| China Leading Int'L Trading Co., Limited | Professional & scientific | 2013 |
| China SME Community Interests Union Group Limited | Agriculture & fishing | 2022 |
| China-Europe Design Communication Association | Agriculture & fishing | 2025 |
| Chinar Trade Services Ltd | Information & communication | 2021 |
| Chinery-Martin Dining Ltd | Hospitality | 2023 |
| Chinery-Martin Property Ltd | Real estate | 2022 |