| Coperecruit.Com Limited | Administrative & support | 2015 |
| Copley Design and Build Ltd | Construction | 2018 |
| Copley Park (Sprotbrough) Management Company Limited | Households | 2023 |
| Copleys (Leeds) Limited | Real estate | 2002 |
| Copmanthorpe Childcare Centre Limited | Health & social care | 2019 |
| Copper Beech Studios Limited | Information & communication | 2025 |
| Copper Tech Developments Ltd | Construction | 2025 |
| Copper Tech FM Ltd | Construction | 2022 |
| Copperbox Investments Limited | Real estate | 2021 |
| Copperplan Limited | Real estate | 2013 |
| Coppersprout Limited | Professional & scientific | 2025 |
| Copperwave Coaching & Consulting Ltd | Professional & scientific | 2021 |
| Coppice Maintenance Limited | Households | 1963 |
| Coptrz Ltd | Professional & scientific | 2016 |
| Copy Confidential Ltd. | Professional & scientific | 2016 |
| Copy House Hideaway Limited | Hospitality | 2022 |
| Copytel Ltd | Manufacturing | 2012 |
| Coral Bathrooms Limited | Professional & scientific | 2011 |
| Coral Designer Garage Doors Ltd. | Administrative & support | 2020 |
| Coral Distribution Limited | Wholesale & retail | 2002 |
| Coral Mills Limited | Real estate | 1999 |
| Coral PFI Holdings 2003 Limited | Financial services | 2003 |
| Coral Project Investments (Assetco) Limited | Administrative & support | 2017 |
| Coral Project Investments (Issuer) Limited | Administrative & support | 2017 |
| Coral Project Investments LP | | 2017 |
| Coral Tech Ltd | Wholesale & retail | 2022 |
| Coralaze Limited | Financial services | 2013 |
| Coralaze Media Limited | Extraterritorial | 2015 |
| Coralbay.Tv Ltd | Information & communication | 2016 |
| Cordgroom Limited | | 1991 |
| Cordiner Capital Limited | Financial services | 2025 |
| Cordiner Holdings Limited | Construction | 2024 |
| Cordiner Wealth Limited | Financial services | 2013 |
| Cordoba Consultants Ltd | Professional & scientific | 2013 |
| Core 5 Limited | Real estate | 2015 |
| Core Asset Benefits Limited | Professional & scientific | 2023 |
| Core by Ceri Ltd | Arts & recreation | 2025 |
| Core Civils Limited | Construction | 2009 |
| Core Clean Solutions Ltd | Administrative & support | 2026 |
| Core Connect Limited | Wholesale & retail | 2024 |
| Core Construct AIQ Limited | Information & communication | 2025 |
| Core Construct IQ Limited | Information & communication | 2025 |
| Core Construct IQA Limited | Information & communication | 2025 |
| Core Construction Group Limited | Real estate | 2004 |
| Core Construction Management Limited | Professional & scientific | 2014 |
| Core Consulting & Projects Limited | Information & communication | 2025 |
| Core Corporate Services Limited | Education | 2012 |
| Core Electrical (Northern) Ltd | Construction | 2021 |
| Core Engineering Services Limited | Real estate | 2004 |
| Core Financial Paraplanning Limited | Administrative & support | 2014 |
| Core Finity Limited | Professional & scientific | 2016 |
| Core Health (NW) Ltd | Health & social care | 2024 |
| Core Installations Group Ltd | Manufacturing | 2024 |
| Core Minor Works Limited | Construction | 2004 |
| Core PHG Limited | Construction | 2023 |
| Core Plant Limited | Administrative & support | 2012 |
| Core Property International Limited | Real estate | 2019 |
| Core Search Recruitment Ltd | Professional & scientific | 2025 |
| Core Telecom Limited | Information & communication | 2005 |
| Core Training and Development Limited | Education | 2019 |
| Core Works Solutions Ltd | Manufacturing | 2025 |
| Corecom Consulting Limited | Administrative & support | 2008 |
| Corecom Technology Academy Ltd | Administrative & support | 2022 |
| Corelia Solutions Limited | Professional & scientific | 2010 |
| Corellian Telecom Ltd | Professional & scientific | 2019 |
| Coremech Mechanical & Electrical Ltd | Construction | 2012 |
| Corenet IT Services Limited | Information & communication | 2025 |
| Coretech Sciences Limited | Professional & scientific | 2025 |
| Coretek Distribution Ltd | Wholesale & retail | 2025 |
| Corevisiq Limited | Information & communication | 2025 |
| Coreyjackcreative Ltd | Other services | 2022 |
| Corez Systems Ltd | Information & communication | 2026 |
| Cori Logistics Ltd | Transport & logistics | 2025 |
| Corinne Lapierre Limited | Arts & recreation | 2015 |
| Corinthian Communications Ltd | Construction | 2012 |
| Cork Solutions Limited | Construction | 2019 |
| Corkers Financial Services Limited | Financial services | 2020 |
| Corlex Limited | Real estate | 2023 |
| Corn Hill Property Limited | Real estate | 2017 |
| Corn Mill Lodge Limited | Hospitality | 1997 |
| Cornbrook Group Ltd | Professional & scientific | 2003 |
| Cornelius Tech Ltd | Information & communication | 2019 |
| Cornell Construction Northern Ltd | Construction | 2024 |
| Corner Creative Ltd | Professional & scientific | 2010 |
| Corner HUT Ltd | Hospitality | 2024 |
| Corner Mart Ltd | Wholesale & retail | 2019 |
| Corner Shop 14 Ltd | Hospitality | 2012 |
| Cornerium Limited | Agriculture & fishing | 2022 |
| Cornershop (Leeds) Ltd | Wholesale & retail | 2011 |
| Cornershopuk Ltd | Wholesale & retail | 2022 |
| Cornersof Limited | Extraterritorial | 2011 |
| Cornerstone Accountancy (Leeds) Ltd | Professional & scientific | 2022 |
| Cornerstone Administration Services Ltd | Administrative & support | 2026 |
| Cornerstone Construction (Leeds) Limited | Construction | 2019 |
| Cornerstone Design & Consulting Ltd | Professional & scientific | 2020 |
| Cornerstone Global System UK Ltd | Professional & scientific | 2014 |
| Cornerstone Healthcare Services Limited | Health & social care | 2020 |
| Cornerstone Property & Investments Ltd | Real estate | 2025 |
| Cornerstone Systems Consultancy Ltd. | Professional & scientific | 2018 |
| Corniche Ltd | Other services | 2021 |