| Courier Services Agent Ltd | Transport & logistics | 2026 |
| Courier Transports 24/7 Ltd | Transport & logistics | 2026 |
| Courierfly Ltd | Transport & logistics | 2024 |
| Couriers Shah Ltd | Transport & logistics | 2025 |
| Courses 4 YOU Limited | Administrative & support | 2024 |
| Courses Direct Limited | Education | 2023 |
| Court Auto Dismantlers Limited | Water & waste | 2008 |
| Court BD Limited | Construction | 2020 |
| Court Collaboration Holdings Limited | Financial services | 2021 |
| Court Collaboration Investments Limited | Financial services | 2024 |
| Court Collaboration Limited | Construction | 2015 |
| Court Lane Developments 102 Ltd | Real estate | 2015 |
| Court Lane Developments 104 Ltd | Real estate | 2015 |
| Court Lane Developments Limited | Real estate | 2015 |
| Court Property Maintenance Ltd | Construction | 2015 |
| Court Ventures Limited | Construction | 2013 |
| Courtbays Limited | | 2007 |
| Courteous Care Group Limited | Health & social care | 2024 |
| Courtprice Limited | Financial services | 1984 |
| Courtson Engineering Limited | Manufacturing | 2005 |
| Courtyard Management (Bromsgrove) Limited | Professional & scientific | 2002 |
| Courtyard Romanway Limited | Other services | 2007 |
| Cousins Consultancy Ltd | Professional & scientific | 2025 |
| Cousinvinny Limited | Construction | 2024 |
| Coutour Mode Ltd | Wholesale & retail | 2025 |
| Couture Hair by Grace Roberts Ltd | Other services | 2022 |
| COV Bricklayer Contractors Limited | Construction | 2022 |
| COV Grooming Ltd | Other services | 2024 |
| Covara Property Consultancy Ltd | Hospitality | 2025 |
| Covasa Games Limited | Information & communication | 2025 |
| Covatic Ltd | Information & communication | 2016 |
| Covcann Communications Limited | Professional & scientific | 2012 |
| Covenant Accommodation Services Ltd | Hospitality | 2023 |
| Covenant Creations Builders UK Ltd | Construction | 2025 |
| Covenant Direct Limited | Construction | 2014 |
| Covenant Solutions Limited | Financial services | 2025 |
| Coventry Asset & Investment Limited | Real estate | 2025 |
| Coventry Care Partnership (NO1) Limited | Real estate | 2014 |
| Coventry Care Partnership Ltd | Professional & scientific | 2012 |
| Coventry Engineering Ltd. | Manufacturing | 2009 |
| Coventry Glass Limited | Construction | 2010 |
| Coventry Greyhounds Club Limited | Extraterritorial | 2003 |
| Coventry Hair Loss Clinic Ltd | Other services | 2023 |
| Coventry Hongkongers C.I.C. | Other services | 2023 |
| Coventry MOT Centre Limited | Wholesale & retail | 2024 |
| Coventry Motors Ltd | Wholesale & retail | 2023 |
| Coventry PAT Testing Ltd | Manufacturing | 2011 |
| Coventry Racing Club Limited | Administrative & support | 2006 |
| Coventry Road Bargain Village Limited | Wholesale & retail | 2026 |
| Coventry Scaffolding Ltd | Construction | 2026 |
| Coventry Stadium Limited | Administrative & support | 2002 |
| Coventry Timber Products Limited | Wholesale & retail | 2001 |
| Cover ALL Occasions Ltd | Arts & recreation | 2026 |
| Cover Builds Ltd | Construction | 2026 |
| Coverd Limited | Wholesale & retail | 2024 |
| Covernote Limited | Real estate | 1988 |
| Covo Derby Limited | Construction | 2026 |
| Covo Nottingham Limited | Construction | 2025 |
| Covra Management Limited | Construction | 2003 |
| Covvered Limited | Other services | 2017 |
| Cowell Consultancy Ltd | Information & communication | 2015 |
| Cowling Automotive Technologies Ltd | Manufacturing | 2017 |
| Cowos 168 Ltd | Wholesale & retail | 2024 |
| Cowper Place Residents Management Company Limited | Households | 2019 |
| COX Baker Limited | Professional & scientific | 2023 |
| COX Jones Interiors Limited | Construction | 2017 |
| COX Wokingham Plastics Limited | Manufacturing | 1994 |
| Coxhill Properties Limited | Construction | 1960 |
| Coyan Bakery Limited | Hospitality | 2023 |
| Coychurch Property Limited | Real estate | 2018 |
| Coyle Care Ltd | Health & social care | 2014 |
| Coyne Property Ltd | Real estate | 2018 |
| Cozbi Multi Services Ltd | Health & social care | 2017 |
| Cozee Nights Ltd | Hospitality | 2024 |
| Cozmetiks Limited | Wholesale & retail | 2018 |
| Cozy & Partners Ltd | Real estate | 2023 |
| Cozy Air BNB Limited | Real estate | 2025 |
| Cozy Cookies Ltd | Hospitality | 2025 |
| Cozy Cove UK Fashion Ltd | Manufacturing | 2025 |
| Cozy Craft Living Limited | Wholesale & retail | 2025 |
| Cozy Hommes Ltd | Real estate | 2025 |
| Cozy Lodges Limited | Real estate | 2022 |
| Cozy Rooms Properties Ltd | Real estate | 2020 |
| Cozy Rooms Stays Ltd | Real estate | 2024 |
| Cozy Space Ltd | Real estate | 2025 |
| Cozy Stoves Limited | Construction | 2011 |
| Cozy-Cove Fashion Ltd | Manufacturing | 2024 |
| Cozyfirst Limited | Real estate | 2023 |
| Cozynest Bedding Limited | Wholesale & retail | 2025 |
| Cozyplaces Ltd | Real estate | 2019 |
| CP & Group Limited | Hospitality | 2025 |
| CP A38 Ltd | Hospitality | 2025 |
| CP Coaching Academy Ltd | Education | 2021 |
| CP Elite Development Ltd | Education | 2024 |
| CP Housing Limited | Real estate | 2026 |
| CP Mortgages and Protection Ltd | Financial services | 2018 |
| CP Motorworks Ltd | Wholesale & retail | 2026 |
| CP Performance Centre Ltd | Education | 2024 |
| CP Residential Management Company Limited | Households | 2023 |
| CP Stationers Limited | Manufacturing | 2017 |