| Bulzy's Ltd | Hospitality | 2024 |
| BUN & Crust Ltd | Hospitality | 2025 |
| Burdon Automotive Ltd | Wholesale & retail | 2022 |
| Burning Bush Ltd | Hospitality | 2024 |
| Burrito Bhai Ltd | Hospitality | 2025 |
| Businet Support Ltd | Professional & scientific | 2019 |
| BV Diamond Products Limited | Manufacturing | 2007 |
| BWC Finance Ltd | Professional & scientific | 2025 |
| BXR Motors Ltd | Wholesale & retail | 2025 |
| C Perkin Limited | Manufacturing | 2023 |
| C.M.S. Vocational Training Limited | Education | 2000 |
| C2K Upholstery Limited | Manufacturing | 2010 |
| C80 Management Ltd | Professional & scientific | 2017 |
| C80 Solutions Ltd | Information & communication | 2010 |
| Cable Coatings Limited | Manufacturing | 2016 |
| Cables Online Ltd | Wholesale & retail | 2016 |
| Caesar’S Interiors Ltd | Wholesale & retail | 2020 |
| Cafe @ NO1 Ltd | Hospitality | 2024 |
| Cafe Allure Ltd | Hospitality | 2024 |
| Calder Ventures Limited | Real estate | 2024 |
| Caledonia MAP Ltd | Health & social care | 2025 |
| Calix Tech Ltd | Transport & logistics | 2019 |
| Camix Ltd | Wholesale & retail | 2020 |
| Camwood Healthcare Limited | Health & social care | 2023 |
| CAN DO Solar Ltd | Construction | 2020 |
| Canary Consultancy Ltd | Professional & scientific | 2026 |
| Candy Bliss Ltd | Wholesale & retail | 2025 |
| Candyfloss Art Ltd | Wholesale & retail | 2025 |
| Capital Components Ltd | Wholesale & retail | 2019 |
| Capricorn Plumbing and Heating Projects Ltd | Construction | 2021 |
| Car Cleaning Solutions Ltd | Administrative & support | 2023 |
| Carben Fabrications Limited | Manufacturing | 2018 |
| Care Angels (Batley) Ltd | Health & social care | 2015 |
| Care Angels Batly Ltd | Health & social care | 2022 |
| Care Financial Ltd | Professional & scientific | 2025 |
| Carlton Business Solutions (UK) Limited | Professional & scientific | 2002 |
| Carlton Luxury Beds Limited | Manufacturing | 2019 |
| Carluxe - Sports & Prestige Ltd | Wholesale & retail | 2024 |
| Carmatsrus Ltd | Extraterritorial | 2021 |
| Carpet Master Services Limited | Administrative & support | 2024 |
| Carpets and Flooring Outlet Ltd | Wholesale & retail | 2024 |
| Carton Finish Limited | Manufacturing | 2020 |
| Cartwright Property Investments Ltd | Real estate | 2026 |
| Casa Gate Ltd | Real estate | 2018 |
| CASANO21 Ltd | Wholesale & retail | 2024 |
| Castle Special Projects LLP | | 2011 |
| Castles Education LLP | | 2016 |
| Castles Property Investments Limited | Real estate | 2016 |
| Catalin VEX Ltd | Construction | 2025 |
| Cbst Ltd | Transport & logistics | 2018 |
| Ccrm (Investments) Limited | Real estate | 2002 |
| CDP Aero Ltd | Manufacturing | 2023 |
| CEE Holdings Group Ltd | Financial services | 2025 |
| Central Asia (Holdings) Limited | Wholesale & retail | 2006 |
| Central Trade Distribution Ltd | Wholesale & retail | 2025 |
| Ceylon Dosa Global Ltd | Hospitality | 2023 |
| Ceylondiv UK Ltd | Wholesale & retail | 2024 |
| CG Artisan Ltd | Hospitality | 2026 |
| CG Property and Rentals Limited | Real estate | 2022 |
| CGI (HR) Ltd | Professional & scientific | 2022 |
| CGI Accountants Ltd | Professional & scientific | 2019 |
| CGI Investments Ltd | Real estate | 2017 |
| Cgrn Limited | Information & communication | 2024 |
| CHA CHA Desserts Ltd | Wholesale & retail | 2025 |
| Chaatbox Events Ltd | Hospitality | 2025 |
| Chai Shai Limited | Hospitality | 2019 |
| Chai Shai Wakefield Ltd | Hospitality | 2025 |
| Chairflo Ltd | Information & communication | 2024 |
| Charity Assist Accountants Limited | Professional & scientific | 2018 |
| CHAUCER58 Limited | Professional & scientific | 2024 |
| Cheema Autos Limited | Wholesale & retail | 2025 |
| Cherry Tree Surgery Ltd | Health & social care | 2022 |
| Chesterton Investments Limited | Real estate | 2016 |
| CHI (Linson Court) Limited | Health & social care | 2023 |
| CHI (Manorcroft) Limited | Health & social care | 2023 |
| Chia Pilates Batley Ltd | Arts & recreation | 2025 |
| Chic Concept Group Ltd | Wholesale & retail | 2023 |
| Chic Holdings Ltd | Financial services | 2024 |
| Chilli Lodge Ltd | Hospitality | 2024 |
| Chris Taylor Fabrications Limited | Manufacturing | 2018 |
| Chulha Ltd | Manufacturing | 2026 |
| Church Lane Management Company (Birstall) Limited | Households | 2019 |
| Ciannellas Ltd | Hospitality | 2024 |
| Citizen Connect Limited | Professional & scientific | 2010 |
| Clarity Business Finance Ltd | Financial services | 2022 |
| Class PT Ltd | Arts & recreation | 2026 |
| Classaexports Limited | Wholesale & retail | 2025 |
| Classic Niall Limited | Information & communication | 2017 |
| Clayton Beds Limited | Wholesale & retail | 2018 |
| Clayton Dewandre Holdings Limited | Professional & scientific | 1928 |
| Cleaning Expectations Limited | Administrative & support | 2012 |
| Clearwater Packaging Group Ltd | Wholesale & retail | 2025 |
| Clerk Green Associates Ltd | Professional & scientific | 2016 |
| Click & Ship Solutions Ltd | Wholesale & retail | 2025 |
| Click IT Flooring Ltd | Construction | 2020 |
| Clientax Limited | Professional & scientific | 2023 |
| Clifton Community Properties Limited | Real estate | 2004 |
| Clifton Properties (Yorkshire) Limited | Real estate | 1987 |
| Clifton ST. Anne's Personal Care Services Limited | Health & social care | 1996 |
| Clinical Support Ltd | Health & social care | 2026 |