| Cadzow Consultancy Limited | Real estate | 2018 |
| Caecus Blinds Ltd | Wholesale & retail | 2011 |
| Cafe #9 Limited | Hospitality | 2023 |
| Cafe Bohemia Limited | Manufacturing | 2024 |
| Cafe Food and Drink Ltd | Hospitality | 2017 |
| Cafe Generation Limited | Hospitality | 2012 |
| Cafe HUG Ltd | Hospitality | 2024 |
| Cafe Masala Takeaway Limited | Hospitality | 2023 |
| Cafe Milano S5 Ltd | Hospitality | 2026 |
| Cafe Nort Ltd | Manufacturing | 2020 |
| Cafe Racer Kits Holdings Limited | Manufacturing | 2021 |
| Cafe Racer Kits Ltd | Manufacturing | 2014 |
| Cafe S8 Ltd | Hospitality | 2026 |
| Cafe Smitten Limited | Hospitality | 2023 |
| Cafeology Holding Company Limited | Financial services | 2026 |
| Cafeology Limited | Wholesale & retail | 2003 |
| Caffe D'Amour Ltd | Administrative & support | 2016 |
| Caffe Inn S2 Ltd | Hospitality | 2024 |
| Caffe ORI Limited | Hospitality | 2006 |
| Caged Butterfly Limited | Arts & recreation | 2006 |
| CAH Costa Ltd | Construction | 2022 |
| Cahill Building Contractors Limited | Construction | 2018 |
| Cahill Design Engineering Ltd | Administrative & support | 2016 |
| Cahillqmsconsulting Ltd | Professional & scientific | 2023 |
| Cahoot Inc CIC | Professional & scientific | 2025 |
| Cairn Technology Limited | Professional & scientific | 1999 |
| Cairnwell Capital Limited | Health & social care | 2009 |
| Cairnwell Developments Limited | Health & social care | 2018 |
| Cairnwell Estates Limited | Health & social care | 2009 |
| Caistor Lakes Limited | Hospitality | 2014 |
| Cake & 50 Percent Sweet Ltd | Manufacturing | 2022 |
| Cake Blading Ltd | Manufacturing | 2023 |
| Cake Learning and Development Limited | Professional & scientific | 2013 |
| Cake Palace Limited | Wholesale & retail | 2024 |
| Cakes & Comics Limited | Arts & recreation | 2014 |
| Cakes by Pana Ltd | Manufacturing | 2021 |
| Cakes N Bakes Limited | Manufacturing | 2026 |
| Cakesbysarah Ltd | Manufacturing | 2025 |
| Cal-Tech Business Solutions Ltd | Information & communication | 2024 |
| CAL78 Limited | Real estate | 2025 |
| Caladen Drinks Limited | Manufacturing | 2026 |
| Caladen International Ltd | Real estate | 2013 |
| Calcate Engineering Ltd | Professional & scientific | 2022 |
| Caldan Special Projects Limited | Construction | 2010 |
| Caldbeck Interiors Limited | Real estate | 1989 |
| Caldbeck Limited | Real estate | 1983 |
| Caldeira Aesthetics Ltd | Health & social care | 2017 |
| Caldene Capital Company Limited | Real estate | 2003 |
| Calder Electrical Limited | Construction | 2009 |
| Calder Valley Marine Limited | Manufacturing | 2002 |
| Calder Valley Vista Limited | Households | 2022 |
| Caleo Limited | Wholesale & retail | 2018 |
| Calibrate U.K. Limited | Manufacturing | 2012 |
| Caliburn Developments Limited | Construction | 2017 |
| Calina Jewellery Ltd | Wholesale & retail | 2025 |
| Caliph Medical Ltd | Manufacturing | 2023 |
| Calis Holding Ltd | Financial services | 2024 |
| Calis Supply Ltd | Hospitality | 2024 |
| Caliskan Car Care Ltd | Wholesale & retail | 2023 |
| Calistros Properties Company Limited | Real estate | 2019 |
| Call & Protect Limited | Professional & scientific | 2006 |
| Call Centre Resources Limited | Administrative & support | 1997 |
| Call for Duty | Health & social care | 2018 |
| Callstain Ltd | Manufacturing | 2004 |
| Callum Fortitude Industries Limited | Information & communication | 2017 |
| Callwise Solutions Limited | Information & communication | 2015 |
| Calm Minds Cafe Limited | Extraterritorial | 2024 |
| Calm Professional Services Limited | Professional & scientific | 2014 |
| Calmer CX Group Limited | Other services | 2025 |
| Calmtree Holdings Ltd | Real estate | 2026 |
| Calobcam Limited | Information & communication | 2010 |
| Calow Holdings & Marketing Ltd | Financial services | 2023 |
| Cals Cabs Limited | Transport & logistics | 2024 |
| Calsands 800 Limited | Other services | 2020 |
| Caltured Ltd | Wholesale & retail | 2026 |
| Calum Cassidy Consultancy Limited | Information & communication | 2026 |
| Calvary Event Centre Ltd | Hospitality | 2026 |
| Calvary Homes Limited | Real estate | 2024 |
| Calver Developments Limited | Construction | 2005 |
| Calybre Group Limited | Information & communication | 2023 |
| Calybre UK Limited | Information & communication | 2023 |
| CAM Fork Lift Trucks Limited | Administrative & support | 2003 |
| CAM Hydraulics Ltd | Manufacturing | 2012 |
| Camargue Consulting Ltd | Professional & scientific | 2024 |
| Cambridge Shady Limited | Wholesale & retail | 2026 |
| Camden Street Light Limited | Hospitality | 2016 |
| Cameifu Tading Ltd | Wholesale & retail | 2025 |
| Camel City Sound UK Ltd | Administrative & support | 2025 |
| Camelot Mobility Ltd | Wholesale & retail | 2025 |
| Camelot Silverware Limited | Manufacturing | 2010 |
| Camera Picture Music Ltd | Information & communication | 2024 |
| Cameron Compliance Limited | Administrative & support | 2005 |
| Cameron Motor Engineers (Sheffield) Limited | | 1986 |
| Cameron's Tea Shop Limited | Hospitality | 2021 |
| Camforce Ltd | Construction | 2025 |
| Camilla ANH Tran Nails Limited | Other services | 2022 |
| Camm Street Bakery Ltd | Manufacturing | 2018 |
| Cammac Coal Limited | Manufacturing | 1970 |
| Camongree Limited | Real estate | 2022 |
| Camorra Limited | Wholesale & retail | 1980 |