| Coray Properties Ltd | Administrative & support | 2014 |
| Corazon Tours Ltd | Administrative & support | 2020 |
| Corbett Developments Ltd | Real estate | 2019 |
| Corbett Hospitality Holding Ltd | Hospitality | 2023 |
| Corblimey YOU Beauty Ltd | Other services | 2016 |
| Corcas Ltd. | Wholesale & retail | 2012 |
| Cordelion Trade Ltd | Wholesale & retail | 2025 |
| Cordial Wave Limited | Information & communication | 2025 |
| Cordier PM and Consulting Limited | Administrative & support | 2013 |
| Cordillera Properties Limited | Real estate | 2024 |
| Cordina Promotions Limited | Arts & recreation | 2018 |
| Cordova Arts Gallery Limited | Wholesale & retail | 2019 |
| Cordovan Ltd | Wholesale & retail | 2026 |
| Core Alignment Ltd | Other services | 2025 |
| Core Audio Ltd | Arts & recreation | 2022 |
| Core Cardiff Ltd | Other services | 2024 |
| Core Construct Advisory Limited | Professional & scientific | 2025 |
| Core Creative Projects Ltd | Manufacturing | 2021 |
| Core Fold Saas Ltd | Information & communication | 2025 |
| Core HR Services Ltd | Wholesale & retail | 2021 |
| Core HR Solutions Ltd | Administrative & support | 2021 |
| Core Interiors Limited | Other services | 1994 |
| Core Internet Solutions Employee Owned Trust Limited | Professional & scientific | 2024 |
| Core Internet Solutions Limited | Information & communication | 2009 |
| Core Motion Physiotherapy Ltd | Health & social care | 2024 |
| Core Move Limited | Wholesale & retail | 2025 |
| Core Spot Ltd | Hospitality | 2025 |
| Core Waste Management Ltd | Water & waste | 2020 |
| Core Wave Saas Ltd | Information & communication | 2025 |
| Coreassist Technologies Ltd | Information & communication | 2026 |
| Corecycle Office Clearance Ltd | Wholesale & retail | 2023 |
| Coredan Limited | Hospitality | 2018 |
| Coreflexind Limited | Manufacturing | 2025 |
| CORELINK360 Ltd | Information & communication | 2026 |
| Coreloom Limited | Information & communication | 2024 |
| Coreluna Trading Ltd | Wholesale & retail | 2025 |
| Corequadraa Ltd | Hospitality | 2025 |
| Coretech Innovations Limited | Construction | 2025 |
| Corevantis Ltd | Information & communication | 2026 |
| Coreview Glazing Limited | Construction | 2026 |
| Corevision Consulting Ltd | Wholesale & retail | 2024 |
| Corexium I.T. Limited | Wholesale & retail | 2014 |
| Corexy Ltd | Wholesale & retail | 2026 |
| Corey Joseph Counselling Ltd | Health & social care | 2025 |
| Corgi ITC Ltd | Information & communication | 2015 |
| Coriander Properties Limited | Real estate | 2010 |
| Corinium Home Improvements Ltd | Manufacturing | 2020 |
| Corinthia Group Limited | Information & communication | 2025 |
| Corinthia International Ltd | Professional & scientific | 2026 |
| Corio Holding Limited | Professional & scientific | 2025 |
| Cork Construction Ltd | Construction | 2025 |
| Cork Land Investments Limited | Construction | 2022 |
| Corlest Ltd | Wholesale & retail | 2025 |
| Cormaks Commerce LP | | 2017 |
| Cornborough Business Associates Limited | Professional & scientific | 1983 |
| Cornborough Lodge Management Limited | Households | 2016 |
| Corner Flag Coffee Limited | Hospitality | 2026 |
| Corner House (Carlisle) Ltd | Hospitality | 2003 |
| Corner Mini Market Ltd | Wholesale & retail | 2024 |
| Corner Point Surveys Limited | Professional & scientific | 2019 |
| Corner Shop Services Limited | Wholesale & retail | 2019 |
| Cornerstone Assets 2003 Ltd | Real estate | 2003 |
| Cornerstone Commercial Insurance Services Ltd | Financial services | 2010 |
| Cornerstone Finance Group Holdings 2 Limited | Financial services | 2026 |
| Cornerstone Finance Group Holdings Ltd | Financial services | 2020 |
| Cornerstone Finance Group Ltd | Financial services | 2013 |
| Cornerstone International Finance Ltd | Financial services | 2022 |
| Cornerstone Properties & Investments Ltd | Real estate | 2025 |
| Cornerstone Renovations Ltd | Construction | 2021 |
| Cornerstone Ways Ltd | Health & social care | 2018 |
| Cornerstone Will & Estate Planning Limited | Professional & scientific | 2025 |
| Cornfield Secretaries Limited | Professional & scientific | 2003 |
| Corniche Holdings Limited | Administrative & support | 2021 |
| Cornish Healthcare Ltd | Health & social care | 2019 |
| Cornucopia Treasures Co., Ltd | Wholesale & retail | 2025 |
| Cornwall Oncology Care Limited | Health & social care | 2019 |
| Cornwall Property Investment Ltd | Real estate | 2011 |
| Cornwall Regeneration Ltd | Construction | 2003 |
| Coron Group Limited | Financial services | 2017 |
| Coronation Technologies Limited | Other services | 2017 |
| Corp Fire Protection Ltd | Construction | 2024 |
| Corp Market Cardiff Ltd | Hospitality | 2023 |
| Corplingo Ltd | Administrative & support | 2024 |
| Corporate and Marine Strategies Limited | Professional & scientific | 1988 |
| Corporate Chess Ltd | Administrative & support | 2020 |
| Corporate Girl Limited | Wholesale & retail | 2023 |
| Corporate Hospitality Ltd | Hospitality | 2018 |
| Corporate Jobber Limited | Wholesale & retail | 2018 |
| Corporate Solutions Plus Ltd | Professional & scientific | 2015 |
| Corporate Star Facility Service Limited | Administrative & support | 2019 |
| Corporation of Public Accountants Limited | Extraterritorial | 2011 |
| Corporation PUB Cardiff Limited | Hospitality | 2025 |
| Corps Cardiff Limited | Hospitality | 2026 |
| Corps Diplomatic International Ltd | Financial services | 2016 |
| Corrach Media Ltd | Information & communication | 2025 |
| Corrcommerce Ltd | Information & communication | 2025 |
| Corrie Bauckham Batts Holdings Limited | Financial services | 1979 |
| Corrie Bauckham Batts Limited | Financial services | 1919 |
| Corrie Paul Kitchens Limited | Wholesale & retail | 2018 |
| Corrupad Packaging Limited | Manufacturing | 2001 |