| Café Portugal Ltd | Hospitality | 2019 |
| Caged Media Limited | Information & communication | 2014 |
| CAH Photography Limited | Information & communication | 2015 |
| Caiber Tech Ltd | Information & communication | 2025 |
| Caide Solutions Limited | Construction | 2011 |
| Caio Capital Ltd | Financial services | 2025 |
| Cairn Films Ltd | Information & communication | 2026 |
| Cairnsford Consultancy Ltd | Information & communication | 2025 |
| Cairo Automotive Ltd | Wholesale & retail | 2020 |
| Cairo Delta Ltd | Wholesale & retail | 2025 |
| Caisys UK Ltd | Administrative & support | 2020 |
| Caithness Biotechnologies Limited | Manufacturing | 2015 |
| Cajole Ltd | Manufacturing | 2026 |
| Cake Box Leicester Limited | Wholesale & retail | 2011 |
| Cake House Leicester Ltd | Manufacturing | 2020 |
| Cake House Slough Ltd | Wholesale & retail | 2020 |
| Cake Inn Leicester Ltd | Wholesale & retail | 2025 |
| Cake Masters Limited | Information & communication | 2011 |
| Cake Origin Limited | Hospitality | 2019 |
| Cake Tools Direct Ltd | Manufacturing | 2018 |
| Cakem Ltd | Wholesale & retail | 2025 |
| Cakes & Bakes Leicester Ltd | Wholesale & retail | 2023 |
| Cakes Express Ltd | Manufacturing | 2024 |
| Cake’D Couture Ltd | Manufacturing | 2026 |
| CAL Electrical Ltd | Construction | 2016 |
| Calathea Ltd | Health & social care | 2019 |
| Calbox Storage Limited | Administrative & support | 2024 |
| Calbri Court Limited | Households | 1988 |
| Calcelec Limited | Information & communication | 2025 |
| Calconcia Limited | Real estate | 2020 |
| Calderstones Logistics Ltd | Transport & logistics | 2014 |
| Caledonian Roofdwellers Limited | Real estate | 1993 |
| Calex Global Marine Ltd | Administrative & support | 2025 |
| Calgary Investments Limited | Real estate | 2017 |
| Calgas Limited | Manufacturing | 2006 |
| Cali CBD UK Products Ltd | Wholesale & retail | 2019 |
| Caliber Investments Limited | Real estate | 2020 |
| Caliber Kitchens Ltd | Wholesale & retail | 2016 |
| Calibre Prop Co (II) Limited | Construction | 2022 |
| Calibre Prop Co (III) Ltd | Construction | 2024 |
| Calico Consulting Ltd | Information & communication | 2025 |
| California 13 Ltd | Transport & logistics | 2018 |
| Calistos (Leicester) Limited | Hospitality | 2024 |
| Caliz Leic Ltd | Wholesale & retail | 2023 |
| Call 2 Support Services Ltd | Health & social care | 2025 |
| Call 2 Train Ltd | Health & social care | 2020 |
| Call Collect (Gp&S) Limited | Wholesale & retail | 2010 |
| Call Collect (Sheffield) Limited | Real estate | 1991 |
| Call EAT Limited | Information & communication | 2025 |
| Call OUT Repairs Limited | Manufacturing | 2025 |
| Calldatamanager Limited | Information & communication | 2021 |
| Calligrapher Ltd | Information & communication | 2020 |
| Callington's Construction Limited | Construction | 2011 |
| Callington's Property Developments Limited | Construction | 2018 |
| Callisto HR Ltd | Administrative & support | 2017 |
| Callix Leisure Limited | Construction | 2016 |
| Callosum Entertainment Ltd | Arts & recreation | 2026 |
| Callum Ferrie Carpentry Limited | Manufacturing | 2026 |
| Calm IS a Skill Ltd | Information & communication | 2025 |
| Calm Therapies Ltd | Other services | 2023 |
| Calm Waters Homes Ltd | Hospitality | 2026 |
| Calm Waters Properties Ltd | Real estate | 2026 |
| Calmax Accountancy Limited | Professional & scientific | 2011 |
| Calmax Stocktaking Ltd | Professional & scientific | 2025 |
| Caloriefix 2.0 Ltd | Administrative & support | 2024 |
| Calthwaite Unity Ltd | Transport & logistics | 2015 |
| Calvert Site Services Limited | Manufacturing | 2007 |
| Calverton Haulage Ltd | Transport & logistics | 2014 |
| Calvisory Limited | Professional & scientific | 2025 |
| Calypso Grill Ltd | Hospitality | 2019 |
| Calyx Care Group Limited | Health & social care | 2026 |
| CAM & Sons Ltd | Transport & logistics | 2024 |
| CAM EOD Ltd | Professional & scientific | 2024 |
| CAM50 Limited | Financial services | 2017 |
| Camari Enterprise Limited | Other services | 2019 |
| Camaz Care Ltd | Hospitality | 2024 |
| Cambridge & Counties Bank Limited | Financial services | 2012 |
| Cambridge Academy of Science, Technology and Specialized Studies Ltd | Education | 2020 |
| Cambridge Base Holdings Ltd | Construction | 2022 |
| Cambridge Grammar Schools Limited | Education | 2014 |
| Cambridge Metabolic Health Ltd | Health & social care | 2022 |
| Camcap Limited | Information & communication | 2016 |
| Camel 5.2 Ltd | Education | 2025 |
| Camelot UK Sales Limited | Real estate | 1997 |
| Cameo Computer Group Limited | Financial services | 2012 |
| Cameo Holdings Limited | Financial services | 2022 |
| Cameraboss Multimedia Ltd | Information & communication | 2024 |
| Cameron Hamilton Properties Limited | Real estate | 1998 |
| Cameron’S Bathrooms & Kitchens Limited | Construction | 2023 |
| Camgearz Ltd | Wholesale & retail | 2021 |
| Camloc Holdings Limited | Administrative & support | 2016 |
| Camloc Motion Control Limited | Manufacturing | 2011 |
| Camminatore Edificio Limited | Professional & scientific | 2025 |
| Camoa Ltd | Professional & scientific | 2020 |
| Campan Consulting Limited | Professional & scientific | 2024 |
| Campbell Advisory Limited | Professional & scientific | 2024 |
| Campbell Bunker Accountancy Services Ltd | Professional & scientific | 2018 |
| Campbell House Limited | Hospitality | 2021 |
| Campbell House Properties Ltd | Real estate | 2025 |
| Campdale Developments Limited | Professional & scientific | 2016 |