| Cordalis Group Ltd | Professional & scientific | 2025 |
| Cordalis I.T Solutions Ltd | Information & communication | 2019 |
| Cordia UK (22GHS) Limited | Real estate | 2021 |
| Cordia UK (Bradford Works) Limited | Construction | 2019 |
| Cordia UK (Lampworks) Limited | Construction | 2016 |
| Cordia UK (Moseley Street) Limited | Construction | 2021 |
| Cordia UK (Nightingale) Limited | Construction | 2021 |
| Cordia UK (Project 1) Limited | Construction | 2021 |
| Cordia UK (the Gothic) Limited | Real estate | 2018 |
| Cordia UK (Thorp) Limited | Construction | 2020 |
| Cordia UK Holdings Limited | Financial services | 2020 |
| Cordia UK Project Holdings Limited | Financial services | 2020 |
| Cordia UK Property Limited | Construction | 2020 |
| Core Alpha Investments Ltd | Information & communication | 2025 |
| Core Alpha Partners LLP | | 2025 |
| Core Care OH Ltd | Public administration | 2025 |
| Core Cleaning Experts Ltd | Administrative & support | 2025 |
| Core Connection HR Limited | Administrative & support | 2022 |
| Core Consultants Ltd | Education | 2024 |
| Core Contracts Limited | Construction | 2019 |
| Core Education Trust | Education | 2012 |
| Core Environmental Services Limited | Professional & scientific | 2011 |
| Core Gaming Limited | Information & communication | 2010 |
| Core Guard Group Ltd | Information & communication | 2026 |
| Core Haven Ltd | Health & social care | 2021 |
| Core Industrial Ltd | Wholesale & retail | 2026 |
| Core Midlands Construction Ltd | Construction | 2023 |
| Core Safety Services Ltd | Professional & scientific | 2024 |
| Core Security (Midlands) Limited | Administrative & support | 2008 |
| Core Security Solution Limited | Extraterritorial | 2012 |
| Core Skills Training Ltd | Education | 2017 |
| Core Tree Limited | Information & communication | 2013 |
| Core Value Services Ltd | Administrative & support | 2024 |
| Core VCT PLC | Financial services | 2005 |
| Core-Security Limited | Information & communication | 2010 |
| Core.Med.Cosmetic Ltd | Wholesale & retail | 2026 |
| CORE42 UK Limited | Information & communication | 2024 |
| Coreactive Sports CIC | Education | 2025 |
| Corebridge Works Limited | Construction | 2025 |
| Corecity Ltd | Administrative & support | 2026 |
| Corecorp Ltd | Wholesale & retail | 2020 |
| Coredwell Ltd | Water & waste | 2026 |
| Corefit Fashion Limited | Manufacturing | 2025 |
| Corelogicx Ltd | Information & communication | 2025 |
| Coremed Care Ltd | Health & social care | 2023 |
| Coremed Recruitment Ltd | Wholesale & retail | 2023 |
| Corenet Solutions Ltd | Professional & scientific | 2024 |
| Corenet Tech Yorkshire Limited | Information & communication | 2024 |
| Corenovait Ltd | Information & communication | 2025 |
| Corerox Ltd | Wholesale & retail | 2017 |
| Coreserve Ventures Ltd | Transport & logistics | 2023 |
| Corestock Limited | Wholesale & retail | 2020 |
| Coretech Hardware Ltd | Wholesale & retail | 2025 |
| Coretech Talent Limited | Administrative & support | 2025 |
| Corevia Tech Ltd | Information & communication | 2025 |
| Corffe Limited | Hospitality | 2020 |
| Corfield Construction Ltd | Construction | 2020 |
| Corfu Greek Kitchen LAB Ltd | Hospitality | 2022 |
| Corikande Trading Limited | Wholesale & retail | 2025 |
| Corin Group Holdings Limited | Financial services | 2018 |
| Corinman Property Management Limited | Extraterritorial | 1999 |
| Corinthian Property Developers Ltd | Construction | 2023 |
| Corinthian Property Group Ltd | Real estate | 2023 |
| Corion Ltd | Transport & logistics | 2025 |
| Cork and Cage Ltd | Hospitality | 2018 |
| Cork and Crust Limited | Hospitality | 2020 |
| Corleone International Limited | Construction | 2016 |
| Corleone TM Ltd | Construction | 2023 |
| Corn Paradise Ltd | Hospitality | 2023 |
| Corndean Property Ltd | Real estate | 2017 |
| Corner - Stone (WM) Ltd | Real estate | 2008 |
| Corner - Stone Travel & Money Exchange Limited | Financial services | 2024 |
| Corner Barn Home Ltd | Wholesale & retail | 2025 |
| Corner Meadows Ltd | Agriculture & fishing | 2024 |
| Corner Sipp Ltd | Real estate | 2017 |
| Cornerdown Publishing Ltd | Information & communication | 2023 |
| Cornered Tiger Limited | Other services | 2019 |
| Cornerstone - ERI Ltd | Real estate | 2023 |
| Cornerstone Builders & Developments Ltd | Construction | 2025 |
| Cornerstone Commercial Holdings Limited | Real estate | 2023 |
| Cornerstone Cost and Project Management Ltd | Real estate | 2025 |
| Cornerstone Edge Housing Limited | Real estate | 2026 |
| Cornerstone Electrical Ltd | Construction | 2025 |
| Cornerstone Events Limited | Hospitality | 2022 |
| Cornerstone EY Ltd | Real estate | 2020 |
| Cornerstone Family Support Ltd | Education | 2017 |
| Cornerstone Group Holdings Limited | Financial services | 2018 |
| Cornerstone H&Y Accountancy Ltd | Financial services | 2019 |
| Cornerstone Homes (WM) Limited | Real estate | 2018 |
| Cornerstone Housing Group CIC | Hospitality | 2021 |
| Cornerstone Housing Law Ltd | Professional & scientific | 2026 |
| Cornerstone Living Ltd | Construction | 2016 |
| Cornerstone Media Ltd | Professional & scientific | 2026 |
| Cornerstone Professional Care Ltd | Health & social care | 2019 |
| Cornerstone Repair and Maintenance Ltd | Construction | 2025 |
| Cornerstone ST Joseph's Limited | Health & social care | 2023 |
| Cornerstone Therapies Limited | Other services | 2014 |
| Cornerstone Training and Support Limited | Health & social care | 2014 |
| Cornerstone UK Management Limited | Professional & scientific | 2018 |
| Cornerstone UK Properties Limited | Households | 2019 |