| CARE2CARE Agency Limited | Administrative & support | 2022 |
| CARE4U Pharmacy Limited | Professional & scientific | 2000 |
| CARE4US Health Care Limited | Public administration | 2020 |
| Careaux Ltd | Manufacturing | 2017 |
| Carebridge Connect Ltd | Information & communication | 2026 |
| Carecruit Ltd | Administrative & support | 2024 |
| Caredale Healthcare Ltd | Administrative & support | 2024 |
| Caredom Ltd | Health & social care | 2025 |
| Career Advisers Limited | Education | 2025 |
| Career Cloud Ltd | Real estate | 2024 |
| Career Development Academy Ltd | Education | 2022 |
| Career Edge Limited | Professional & scientific | 2025 |
| Career Guidance PVT Ltd | Wholesale & retail | 2024 |
| Career Insight Limited | Administrative & support | 2002 |
| Career Linked Limited | Information & communication | 2025 |
| Career Miles Limited | Extraterritorial | 2009 |
| Career Ready Limited | Administrative & support | 2026 |
| Career Structure Design Ltd | Construction | 2019 |
| Careerhero Limited | Information & communication | 2025 |
| Careerloom Ltd | Professional & scientific | 2025 |
| Careermakers Holdings Ltd | Financial services | 2021 |
| Careermakers JV Ltd | Administrative & support | 2023 |
| Careermakers Recruitment (UK) Ltd | Administrative & support | 2012 |
| Careermakers Workwear Ltd | Extraterritorial | 2016 |
| Careermap Holdings Ltd | Professional & scientific | 2018 |
| Careermap Ltd | Administrative & support | 2013 |
| Careermi Limited | Administrative & support | 2025 |
| Carefree Dream Bedding Ltd | Wholesale & retail | 2019 |
| Carefree Management Limited | Information & communication | 2006 |
| Careful Technologies Ltd | Professional & scientific | 2025 |
| Carehaven Cleaning Services Ltd | Administrative & support | 2025 |
| CAREHEAVEN1.0 Ltd | Wholesale & retail | 2025 |
| Carehome Connect Ltd | Administrative & support | 2026 |
| Careline Ltd | Administrative & support | 2019 |
| Careline Nursing Ltd | Administrative & support | 2020 |
| Careloop Health Ltd | Professional & scientific | 2021 |
| Caremacy Ltd | Health & social care | 2026 |
| Caremah Ltd | Health & social care | 2022 |
| Carematch Services Ltd | Administrative & support | 2024 |
| Caremixer Limited | Information & communication | 2024 |
| Careox Limited | Health & social care | 2026 |
| Carepack Limited | Other services | 2012 |
| Careplus Dental Limited | Health & social care | 2024 |
| Careplus Health Limited | Wholesale & retail | 2018 |
| Carer 4 YOU Limited | Health & social care | 2016 |
| Carerecruit Solutions Limited | Administrative & support | 2022 |
| Carers & Nightingales Ltd | Health & social care | 2022 |
| Carers Hive Limited | Health & social care | 2020 |
| Caresecure Ltd | Health & social care | 2022 |
| Caresync Services Ltd | Professional & scientific | 2025 |
| Caret Ltd. | Real estate | 2017 |
| Careterm Ltd | Health & social care | 2026 |
| Caretree Consultants UK Limited | Health & social care | 2017 |
| Carex Ltd | Health & social care | 2026 |
| Carey Lettings Limited | Real estate | 2017 |
| Carey Management Limited | Financial services | 2003 |
| Carey-Baxendale Art Collections & Ceramics Ltd | Wholesale & retail | 2021 |
| Careys Courier Ltd | Transport & logistics | 2019 |
| Carezone Limited | Health & social care | 2025 |
| Carfare Property Development Ltd | Construction | 2018 |
| Carfast Solutions Ltd | Wholesale & retail | 2010 |
| CARFINANCE247 Limited | Financial services | 2006 |
| Carfix Centre Limited | Wholesale & retail | 2023 |
| Carfumes Ltd | Wholesale & retail | 2024 |
| Cargo and Container Handling Limited | Information & communication | 1952 |
| Cargo Carriers (U.K.) Limited | | 1983 |
| Cargo Cars Limited | Administrative & support | 2016 |
| Cargo Cliff Limited | Administrative & support | 2018 |
| Cargo Express Delivery (UK) Ltd | Transport & logistics | 2015 |
| Cargo Track Freight Forwarding Limited | Transport & logistics | 2025 |
| Cargo Wave Ltd | Transport & logistics | 2025 |
| Cargohub Limited | Transport & logistics | 2016 |
| Carhoods Northern Limited | Wholesale & retail | 2003 |
| Carhub MCR Limited | Wholesale & retail | 2024 |
| Carib Group Network Ltd | Professional & scientific | 2025 |
| Caribbean & African Health Network CIC | Health & social care | 2017 |
| Caribbean Cookout Ltd | Hospitality | 2019 |
| Caribbean Sun Limited | Other services | 2026 |
| Caribbean Twist Kitchen Ltd | Hospitality | 2025 |
| Caribbean Vibez Ltd | Hospitality | 2023 |
| Caribea Ltd | Professional & scientific | 2025 |
| Caribean Ting'Z Ltd | Hospitality | 2020 |
| Caring Business Limited | Wholesale & retail | 2019 |
| Caring Estates Limited | Households | 2012 |
| Caring for Smiles Ltd | Health & social care | 2007 |
| Caring Guardians Limited | Health & social care | 2024 |
| Caring Hands Solutions Limited | Health & social care | 2015 |
| Caring Holding One Limited | Financial services | 2018 |
| Caring Holding Three Limited | Financial services | 2022 |
| Caring Holding Topco Ltd | Financial services | 2022 |
| Caring Holding Two Limited | Financial services | 2018 |
| Caring in Partnership Limited | Health & social care | 2024 |
| Caring Moss Cottage Limited | Health & social care | 2008 |
| Caring Plus Limited | Public administration | 2022 |
| Caring Spinney Limited | Health & social care | 2013 |
| Caring UK Limited | Health & social care | 2004 |
| Caring UK Paisley Ltd | Health & social care | 2022 |
| Caringwave Ltd | Public administration | 2024 |
| Cariocca Enterprises (Manchester) Limited | Administrative & support | 1986 |
| Carisa Radiators Limited | Wholesale & retail | 2015 |