| CAV Joinery Ltd | Manufacturing | 2022 |
| Cavalier Consulting Ltd | Professional & scientific | 2022 |
| Cavalla Goods Ltd | Wholesale & retail | 2026 |
| Cavann Sports Limited | Arts & recreation | 2024 |
| Cave Creatures Productions Ltd | Information & communication | 2023 |
| Cave Monsters Ltd | Information & communication | 2018 |
| Cavemen Limited | Arts & recreation | 2002 |
| Cavendish Cancer Care | Health & social care | 2004 |
| Cavendish Electrical Services Ltd | Construction | 2026 |
| Cavendish Estate Planning Ltd | Professional & scientific | 2021 |
| Cavendish Estates Development Ltd | Real estate | 2021 |
| Cavendish Family Office (London) Limited | Administrative & support | 2018 |
| Cavendish Financial Wealth Management Limited | Professional & scientific | 2010 |
| Cavendish JV Ltd | Hospitality | 2026 |
| Cavendish Mgmt Limited | Real estate | 2021 |
| Cavendish Peaks Ltd | Real estate | 2019 |
| Cavendish Peaks U.K. Limited | Real estate | 2024 |
| Cavendish Private Investment Office Limited | Financial services | 2019 |
| Cavendish Wood Limited | Information & communication | 2013 |
| Cavernbeat Limited | Administrative & support | 1999 |
| Caversham Place RTM Company Ltd | Households | 2012 |
| Cavityvac Ltd | Manufacturing | 2016 |
| Cavtv Ltd | Information & communication | 2021 |
| Cawa AGH Limited | Hospitality | 2019 |
| Cawa Bakery Ltd | Manufacturing | 2019 |
| Cawa BP1 Limited | Wholesale & retail | 2024 |
| Cawa Chesterfield 1 Ltd | Hospitality | 2021 |
| Cawa Chesterfield Rail Limited | Hospitality | 2021 |
| Cawa Coffee Limited | Hospitality | 2017 |
| Cawa Division Ltd | Hospitality | 2020 |
| Cawa Leeds BUS Station Limited | Hospitality | 2021 |
| Cawa Nottingham Rail Limited | Hospitality | 2021 |
| Cawa Sheffield Rail Limited | Hospitality | 2024 |
| Cawa Technologies Ltd | Professional & scientific | 2021 |
| Cawgate Limited | Real estate | 1977 |
| Cawtech Engineering Ltd | Professional & scientific | 2024 |
| Cawthorne's Travel Ltd | Transport & logistics | 2016 |
| Caxco Limited | Administrative & support | 2014 |
| Caxco Property Limited | Real estate | 2016 |
| Caxton House Retail Limited | Wholesale & retail | 2008 |
| CB Deliveries Limited | Transport & logistics | 2020 |
| CB Logistics Limited | Transport & logistics | 2014 |
| CB Peak Limited | Information & communication | 2026 |
| CB PT Boxing Ltd | Arts & recreation | 2023 |
| CB Residential Investments Ltd | Real estate | 2025 |
| CBA Trading Limited | Wholesale & retail | 2013 |
| CBC Computer Systems (Sheffield) Limited | Information & communication | 2004 |
| CBC Computer Systems Limited | Information & communication | 1985 |
| CBD Wellness Services Ltd | Other services | 2018 |
| Cbdcustompackaging Ltd | Wholesale & retail | 2025 |
| CBF Powder Coating Ltd | Other services | 2009 |
| CBG Clothing Ltd | Wholesale & retail | 2023 |
| CBH Consultancy Ltd | Financial services | 2018 |
| CBI International Parent Limited | Health & social care | 2015 |
| CBI UK Midco Limited | Health & social care | 2015 |
| CBI UK Topco Limited | Health & social care | 2015 |
| CBK Solutions Ltd | Construction | 2024 |
| CBM Developments Ltd | Construction | 2023 |
| CBR Design & Build Limited | Construction | 2004 |
| CBR Property Ltd | Real estate | 2020 |
| CBS Advanced Tech Limited | Manufacturing | 2020 |
| CBS Dronfield Ltd | Hospitality | 2011 |
| CBS Yorkshire Ltd | Construction | 2021 |
| Cbtb Supplies Limited | Wholesale & retail | 2024 |
| CC Architetra Ltd | Real estate | 2013 |
| CC Brickwork Developments Ltd | Construction | 2021 |
| CC James (Somerset) Ltd | Other services | 2020 |
| CC James Ltd | Other services | 2021 |
| CC Plumbing & Heating (South Yorkshire) Ltd | Construction | 2021 |
| CC Tours Limited | Administrative & support | 2015 |
| CC33 Global Ltd | Administrative & support | 2024 |
| CC33 Property Ltd | Real estate | 2013 |
| CCA Studio Limited | Professional & scientific | 2022 |
| Ccdhlr Limited | Extraterritorial | 2024 |
| CCF Haulage Ltd | Transport & logistics | 2026 |
| Ccfg Ltd | Manufacturing | 2022 |
| Ccnatters Limited | Education | 2025 |
| Ccpi Europe Limited | Manufacturing | 2006 |
| CCS Electrical Company Ltd | Construction | 2017 |
| Cctv Drain Surveys Ltd | Water & waste | 2012 |
| Cctx Ltd | Information & communication | 2022 |
| Ccustomfits Ltd | Wholesale & retail | 2023 |
| CD GAS Services Ltd | Construction | 2026 |
| CD Logistics Limited | Transport & logistics | 2026 |
| CD Solutions & Consultancy Ltd | Information & communication | 2019 |
| CD TEK Limited | Professional & scientific | 2018 |
| CDA Healthcare Ltd | Health & social care | 2018 |
| CDJ Plastering Limited | Construction | 2017 |
| CDK Energy Solutions Ltd | Professional & scientific | 2016 |
| CDK Incorporation CIC | Information & communication | 2024 |
| CDS Accounting Services Limited | Professional & scientific | 2016 |
| CDS Mechanical Ltd | Administrative & support | 2015 |
| CDS Storage Ltd | Transport & logistics | 2025 |
| CE Holdings Ltd | Real estate | 2025 |
| CE Sage Ltd | Health & social care | 2020 |
| CE Touring LLP | | 2024 |
| Cecil K Nyoni CIC | Education | 2025 |
| Cecil Penney Limited | Wholesale & retail | 1958 |
| Cecina Ltd | Professional & scientific | 2024 |
| Cedar HUT Sauna Limited | Other services | 2024 |