| Copper Coin Club Limited | Information & communication | 2021 |
| Copper Hedges Developments Limited | Financial services | 2025 |
| Copper Oak Properties Limited | Real estate | 2022 |
| Copper Plumbing and Heating Limited | Construction | 2020 |
| Copper Systems Ltd | Professional & scientific | 2011 |
| Copper Tree (Bristol) Limited | Construction | 2019 |
| Copperfield Land and Planning Limited | Construction | 2020 |
| Copperfinch Ltd | Professional & scientific | 2020 |
| Coppergate (White House) LLP | | 2023 |
| Coppershield Limited | Real estate | 1989 |
| Coppin Street Leisure Consultancy Ltd | Professional & scientific | 2013 |
| Coppin Street Properties Ltd | Construction | 2015 |
| Coproduce Care C.I.C. | Other services | 2019 |
| Copyrite Business Solutions (Holdings) Limited | Extraterritorial | 2014 |
| Copyrite Business Solutions Limited | Extraterritorial | 1996 |
| COR Restaurant Limited | Hospitality | 2022 |
| Cora Trans Ltd | Transport & logistics | 2022 |
| Coral Cafe Ltd | Wholesale & retail | 2022 |
| Coral Canopy Films Limited | Arts & recreation | 2023 |
| Coral Real Estate Ltd | Real estate | 2020 |
| Coral Structures Ltd | Construction | 2022 |
| Coralie LE Berche Ltd | Health & social care | 2018 |
| Coram DEO Ltd | Administrative & support | 2011 |
| Corax Designs Limited | Administrative & support | 2023 |
| Corbiere Ltd | Information & communication | 2026 |
| Corby Tyres Limited | Wholesale & retail | 1999 |
| Cordis Congenital Ltd | Health & social care | 2026 |
| Corduroy Kitchen Limited | Hospitality | 2021 |
| Core 10 Studio Ltd | Manufacturing | 2018 |
| Core 42 Property Management Limited | Real estate | 2017 |
| Core and ORE Limited | Construction | 2004 |
| Core Building Consultancy Limited | Real estate | 2024 |
| Core Carpentry & Construction Ltd | Construction | 2024 |
| Core Construction Personnel Ltd | Administrative & support | 2021 |
| Core Europe Ltd | Professional & scientific | 2018 |
| Core Fire and Security Ltd | Other services | 2019 |
| Core Insights Bristol Ltd | Professional & scientific | 2016 |
| Core One Construction Ltd | Construction | 2017 |
| Core Strength Studios Limited | Health & social care | 2007 |
| Core Supplies Group Ltd | Wholesale & retail | 2020 |
| Core Vision Property Solutions Limited | Information & communication | 2014 |
| Core Wellness Collective CIC | Other services | 2025 |
| Core Wellness Ltd | Other services | 2024 |
| CORE1CARE Ltd | Health & social care | 2021 |
| CORE64 Limited | Professional & scientific | 2024 |
| Coreflex Enterprises Ltd | Professional & scientific | 2024 |
| Corelabridge Ltd | Wholesale & retail | 2026 |
| Corelogic Technologies Ltd | Information & communication | 2026 |
| Coretech Traders Ltd | Wholesale & retail | 2025 |
| Cori Systems Limited | Information & communication | 2015 |
| Cori Wright Ltd | Construction | 2025 |
| Corialis Group Limited | Financial services | 2016 |
| Coriander Consultations Limited | Professional & scientific | 2018 |
| Corient Advisors UK Ltd | Professional & scientific | 2026 |
| Corient Global Holdco Limited | Financial services | 2025 |
| Corient Global Partners (Feeder 1) Limited | Financial services | 2026 |
| Corient International Acquisitionco Limited | Financial services | 2025 |
| Corient International Holdings Limited | Financial services | 2025 |
| Corinne Welch Ltd | Professional & scientific | 2009 |
| Corio Ltd | Education | 2020 |
| Cork Engineering Limited | Information & communication | 2016 |
| Corkers Group Limited | Administrative & support | 2013 |
| Corks and Crus Limited | Agriculture & fishing | 2025 |
| Corla Limited | Administrative & support | 2001 |
| Corlmi UK Limited | Manufacturing | 2025 |
| Cormack Commercial Ltd | Administrative & support | 2018 |
| Cormack Enterprises Limited | Wholesale & retail | 2015 |
| Cormack Holdings Limited | Real estate | 2015 |
| Cormate Limited | Health & social care | 2014 |
| Cormec Limited | Manufacturing | 2015 |
| Corn 4 Days Ltd | Hospitality | 2026 |
| Corn Leaze Pigs Ltd | Extraterritorial | 2015 |
| Corn Street 44 Management Limited | Households | 2003 |
| Cornelius Immigration Advisors Ltd | Professional & scientific | 2025 |
| Cornelsen Limited | Water & waste | 2003 |
| Corner Enterprises Limited | Wholesale & retail | 2010 |
| Corner Fish and Chips Ltd | Hospitality | 2020 |
| Corner Shop Bristol Ltd | Wholesale & retail | 2025 |
| Corner Stores FOX & West Limited | Wholesale & retail | 2022 |
| Cornercircle Ltd | Professional & scientific | 2015 |
| Cornerstone Care and Education Ltd | Extraterritorial | 2021 |
| Cornerstone Care Solutions Limited | Professional & scientific | 2013 |
| Cornerstone Construction (Bristol) Ltd | Construction | 2011 |
| Cornerstone Creation Limited | Construction | 2025 |
| Cornerstone Home Care Limited | Health & social care | 2016 |
| Cornerstone LPA Ltd | Administrative & support | 2025 |
| Cornerstone Structural Engineering Ltd | Professional & scientific | 2022 |
| Cornerstones FIC | Professional & scientific | 2020 |
| Cornflower PM Limited | Real estate | 2016 |
| Cornick Technical Services Ltd | Professional & scientific | 2026 |
| Cornish Garden Services (Bristol) Limited | Administrative & support | 2013 |
| Cornish Glazing Bristol Limited | Construction | 2006 |
| Cornish Holiday Lettings Ltd | Real estate | 2019 |
| Cornucopia Live Limited | Arts & recreation | 2025 |
| Cornwall Cleaning Consultants Ltd | Other services | 2024 |
| Cornwall Cottages Ltd | Real estate | 2022 |
| Cornwall Fish Direct Limited | Agriculture & fishing | 2020 |
| Cornwall Healthcare Limited | Other services | 2024 |
| Cornwall Investments Limited | Real estate | 1937 |
| Cornwallis Crescent Management Committee Limited | Households | 1981 |