| Cottons Repairs Limited | Construction | 2026 |
| Country MEN Roofing Ltd | Construction | 2026 |
| County Properties 2002 Limited | Real estate | 2001 |
| Courier on Call Ltd | Transport & logistics | 2025 |
| Courland UK Ltd | Wholesale & retail | 2017 |
| Courthaven Limited | Hospitality | 2019 |
| Covell Limited | Construction | 2019 |
| Covered Today Logistics Ltd | Transport & logistics | 2023 |
| Covered Today Ltd | Financial services | 2019 |
| Covered Today Storage Ltd | Transport & logistics | 2025 |
| Cowdell Construction Services Ltd | Construction | 2024 |
| Coze Homes Limited | Construction | 2023 |
| CP Building & Housing Ltd | Construction | 2025 |
| CP Plumbing & Heating (Yorkshire) Ltd | Construction | 2025 |
| CPL Third Party Logistics Limited | Extraterritorial | 2018 |
| CPR Property Refurbishment Ltd | Construction | 2018 |
| Cps.Catering Limited | Hospitality | 2024 |
| CPU BT Ltd | Information & communication | 2014 |
| CR Cole Immigration Consultancy Ltd | Professional & scientific | 2020 |
| Craftcloud Ltd | Information & communication | 2019 |
| Crafthouse Inns Ltd | Hospitality | 2015 |
| Craftsmenship Ltd | Manufacturing | 2021 |
| Cragg Express Ltd | Wholesale & retail | 2015 |
| Craig Kirby Consulting Ltd | Professional & scientific | 2025 |
| Craig Mcgregor Flooring Limited | Construction | 2026 |
| Crampton and Moore (Television) Limited | Wholesale & retail | 1977 |
| Cranewells Consulting Limited | Professional & scientific | 2019 |
| Crashmatt Studio Limited | Information & communication | 2023 |
| Crate Expectations Limited | Manufacturing | 2016 |
| Craveo's Ltd | Hospitality | 2025 |
| Craves Cakes & Shakes Ltd | Hospitality | 2025 |
| Crawford & Co Property Services Ltd | Construction | 2022 |
| Crazy Racing Ltd | Agriculture & fishing | 2021 |
| CRB Doors Holdings Limited | Financial services | 2024 |
| CRB Doors Ltd | Construction | 2015 |
| Creamer Property Management Ltd | Real estate | 2025 |
| Create Kitchens & Bedrooms Limited | Manufacturing | 2025 |
| Created & Blessed Ltd | Professional & scientific | 2022 |
| Creation Recycling Limited | Water & waste | 2003 |
| Creative Flow Ltd | Professional & scientific | 2021 |
| Creative Fulfilment Ltd | Wholesale & retail | 2024 |
| Creative Juice Advertising Limited | Professional & scientific | 2011 |
| Creative Outdoor Living Limited | Wholesale & retail | 2010 |
| Creative Product Innovations Ltd | Manufacturing | 2020 |
| Creative Software Services Ltd | Information & communication | 2015 |
| Creative Space Printing Ltd | Wholesale & retail | 2026 |
| Creator Meetups UK Ltd | Administrative & support | 2024 |
| Creator Scaffold Designs and Temporary Works Consultants Limited | Construction | 2013 |
| Credify Ltd | Financial services | 2025 |
| Creiform Ltd | Manufacturing | 2020 |
| Creme DE LA Creme Atelier Ltd | Construction | 2019 |
| Crepstoday Limited | Wholesale & retail | 2022 |
| Crescent Buildings Harrogate Limited | Professional & scientific | 2008 |
| Crescent Buildings Limited | Real estate | 2002 |
| Crescent Paper Ltd | Manufacturing | 2026 |
| Cresswell and Creed Limited | Real estate | 2024 |
| Crest Accountancy Limited | Professional & scientific | 2003 |
| Crest Properties Limited | Real estate | 2015 |
| Crest Regalia Ltd | Manufacturing | 2003 |
| Crest Supermarkets UK Ltd. | Wholesale & retail | 2013 |
| CRF Communications Ltd | Construction | 2026 |
| Crimea Land Mansfield LLP | | 2019 |
| Crimsonworld Ltd | Wholesale & retail | 2019 |
| Crisana Limited | Transport & logistics | 2015 |
| Criss&M Data Cabling Ltd | Construction | 2021 |
| CRL Projects Yorkshire Ltd | Construction | 2026 |
| Crocus Design Plus Ltd | Professional & scientific | 2020 |
| Croft House Holdings Limited | Financial services | 2022 |
| Croggon 2021 Ltd | Real estate | 2020 |
| Cromfield Property Limited | Real estate | 2025 |
| Crompton Property Investments Limited | Real estate | 2024 |
| Crompton Scaffolding Limited | Construction | 2025 |
| Cronos Energy Ltd | Energy | 2017 |
| Crosbys Courier & Removals Ltd | Transport & logistics | 2023 |
| Cross Check Clothing Ltd | Wholesale & retail | 2016 |
| Cross S89 Ltd | Hospitality | 2024 |
| Crossborder Lettings Management Services Ltd | Real estate | 2026 |
| Crossroadscarsales Ltd | Wholesale & retail | 2017 |
| Crown Autos (Yorkshire) Ltd | Wholesale & retail | 2026 |
| Crown Labels Group Limited | Financial services | 2021 |
| Crown Labels MFG. Co. Limited | Manufacturing | 2000 |
| Crown Rugs Ltd | Wholesale & retail | 2024 |
| CRP Construction Academy Ltd | Education | 2025 |
| CRT Express Ltd | Transport & logistics | 2026 |
| Crucible Bidco Limited | Transport & logistics | 2024 |
| Cruise Plumbing Limited | Construction | 2024 |
| Crumbs-Sandwiches Limited | Hospitality | 2023 |
| Crumbs-Sandwiches-Bolton Limited | Hospitality | 2024 |
| Cruzz Ltd | Transport & logistics | 2025 |
| Cryptography Research Ltd | Education | 2017 |
| Crystal Care Cleaning Ltd | Administrative & support | 2025 |
| Crystal Clean Service Ltd | Administrative & support | 2008 |
| Crystal Keys Ltd | Real estate | 2026 |
| Crystal Lotus Solutions Ltd | Professional & scientific | 2025 |
| Crystal Peak Consulting Limited | Professional & scientific | 2011 |
| Crystal Private Hire Ltd | Transport & logistics | 2009 |
| CS Architecture and Design Ltd | Professional & scientific | 2014 |
| CS Caring Services Ltd | Administrative & support | 2025 |
| CS Developments Ilfracombe Ltd | Real estate | 2021 |
| CS Holdings (Yorkshire) Ltd | Financial services | 2019 |