| Catherine Properties Limited | Real estate | 2024 |
| Catherine Quin Designs Limited | Wholesale & retail | 2015 |
| Catherine Whyte Recruitment Ltd | Administrative & support | 2006 |
| Cathy Powell Ltd | Professional & scientific | 2025 |
| Cathy Sayers Ltd | Wholesale & retail | 2025 |
| Catie Amie Limited | Wholesale & retail | 2025 |
| Catj Solutions LLP | | 2010 |
| Catk Solutions LLP | | 2011 |
| Catley Cleans Limited | Administrative & support | 2023 |
| Catnip Coffeehouse Ltd | Hospitality | 2026 |
| Caton Brown Limited | Real estate | 2016 |
| Cats and Owls Ltd | Extraterritorial | 2025 |
| Cats Away Limited | Agriculture & fishing | 2025 |
| Cattee Investments Limited | Financial services | 2013 |
| Cattee Properties Limited | Real estate | 2014 |
| Catterall ROE Investments Limited | Professional & scientific | 2017 |
| Catterick Estates 1 Ltd | Professional & scientific | 2015 |
| Catterick Estates 2 Ltd | Professional & scientific | 2015 |
| Catterick Estates 3 Ltd | Professional & scientific | 2016 |
| Catterick Estates 4 Ltd | Professional & scientific | 2016 |
| Catterick Estates 5 Ltd | Professional & scientific | 2016 |
| Catterick Estates 6 Ltd | Professional & scientific | 2020 |
| Catterick Estates 7 Ltd | Professional & scientific | 2021 |
| Catua Ltd | Wholesale & retail | 2024 |
| Catz Media Ltd | Professional & scientific | 2025 |
| Caunce O'Hara Insurance Brokers Limited | Financial services | 2019 |
| Caurica International Ltd | Other services | 2021 |
| Causeway Carpets Limited | Manufacturing | 1982 |
| CAV Clear Ltd | Construction | 2020 |
| Cavalier Garages Limited | Wholesale & retail | 2011 |
| Cavalier Solutions Ltd | Transport & logistics | 2025 |
| Cavalry Solutions Limited | Administrative & support | 2023 |
| Cavandish Supermarket Limited | Wholesale & retail | 2013 |
| Cave Clinic Ltd | Other services | 2025 |
| Caveat Developments Limited | Construction | 2024 |
| Caved Limited | Other services | 2021 |
| Cavendish Bowdon Limited | Construction | 2016 |
| Cavendish Consultants Limited | Professional & scientific | 2022 |
| Cavendish Court (Salford) Management Limited | Households | 1965 |
| Cavendish Court (Urmston) Management Company Limited | Households | 1983 |
| Cavendish Court Apartments Phase 2 Ltd | Financial services | 2025 |
| Cavendish Fortune Limited | Households | 2020 |
| Cavendish Gardens (Eccles) Residents Association Limited | Households | 2004 |
| Cavendish Imaging Ltd | Administrative & support | 2009 |
| Cavendish Place NW Limited | Real estate | 2014 |
| Cavendish Propveiw Ltd | Real estate | 2025 |
| Cavenham Property Ltd | Real estate | 2003 |
| Cavenstone Properties Limited | Real estate | 2019 |
| Cavis Limited | Professional & scientific | 2024 |
| Cavis Marketing Limited | Professional & scientific | 2025 |
| Cavitycall Ltd | Health & social care | 2025 |
| Cavlo Ltd | Construction | 2019 |
| Cavu Ecommerce (Emea) Limited | Transport & logistics | 2009 |
| Cavu Experiences (Emea) Limited | Transport & logistics | 2005 |
| Cavu Group Limited | Other services | 2020 |
| CAW Electrical Services Ltd | Construction | 2024 |
| Cawthra Scarff Real Estate Limited | Real estate | 2018 |
| Caxios Limited | Wholesale & retail | 1998 |
| Caxton Place Management Limited | Households | 2003 |
| Cayenne Education Ltd | Professional & scientific | 2017 |
| Cayenne Investments Limited | Real estate | 2020 |
| Cayenne Travel Ltd | Administrative & support | 2019 |
| Caylem Ltd | Households | 2025 |
| Caylite Ltd | Wholesale & retail | 2016 |
| Cayman Trading Ltd | Administrative & support | 2024 |
| Cayp Psychology Limited | Health & social care | 2019 |
| Caythorpeuk Ltd | Other services | 2019 |
| Caza Services Limited | Hospitality | 2025 |
| Cazotinvest Ltd | Real estate | 2025 |
| CB Amenities Limited | Administrative & support | 2024 |
| CB Assets 1 Limited | Real estate | 2025 |
| CB Assets 2 Limited | Real estate | 2025 |
| CB Commercial Services NW Ltd | Professional & scientific | 2026 |
| CB Electronics Ltd | Wholesale & retail | 2023 |
| CB Global Limited | Administrative & support | 2016 |
| CB Group Holdings Ltd | Financial services | 2020 |
| CB Jones Civils Limited | Construction | 2023 |
| CB OIL & GAS Limited | Mining & quarrying | 2012 |
| CB P Consulting Ltd | Administrative & support | 2019 |
| CB Partnership | | 1998 |
| CB Resi Limited | Real estate | 2019 |
| CB Roofing Contractors Limited | Construction | 2026 |
| CB Sports Limited | Information & communication | 2017 |
| CB Staffing Group Limited | Professional & scientific | 2023 |
| CB Studios Official Ltd | Arts & recreation | 2025 |
| CB Supported Living Ltd | Health & social care | 2025 |
| CB Tanning & Aesthetics Limited | Other services | 2024 |
| CBA Marketing Limited | Professional & scientific | 2018 |
| Cbbs Advisor Limited | Professional & scientific | 2024 |
| CBI Consulting Ltd | Professional & scientific | 2023 |
| CBI Global Freight Management Ltd | Transport & logistics | 2005 |
| CBI Resources Limited | Other services | 2022 |
| CBI Security Limited | Administrative & support | 2005 |
| CBK Communications Ltd | Professional & scientific | 2023 |
| CBK Maine Ltd | Wholesale & retail | 2023 |
| Cbkarts Ltd | Arts & recreation | 2023 |
| Cbkassets Ltd | Wholesale & retail | 2023 |
| Cbkwebanalytics Ltd | Education | 2023 |
| CBL 24 Ltd | Wholesale & retail | 2024 |
| CBL Garage Doors Limited | Construction | 2001 |