| Capability for Change Limited | Professional & scientific | 2022 |
| CAPE81 Ltd | Construction | 2020 |
| Capital Cooking Limited | Administrative & support | 2012 |
| Capital Property Refurbs Ltd. | Households | 2024 |
| Capital Solutions Limited | Other services | 2019 |
| Capricorn Eco Timber Ltd. | Wholesale & retail | 2009 |
| Capricorn Mortgages Limited | Financial services | 2001 |
| Car & Rally Services Limited | Wholesale & retail | 2007 |
| Car Care Centre Stafford Ltd | Wholesale & retail | 2026 |
| Carate Shine Ltd | Manufacturing | 2023 |
| Caravan and Camping Centre (Telford) Limited | Wholesale & retail | 1986 |
| Carbon Application Technology Limited | Manufacturing | 2000 |
| Card Service Provider UK Limited | Extraterritorial | 2012 |
| Carding Mill Property Ltd | Real estate | 2024 |
| Care Promise Limited | Health & social care | 2007 |
| Care Quality Services Limited | Health & social care | 2018 |
| Careclothing Limited | Wholesale & retail | 2015 |
| Career Executive (UK) Limited | Professional & scientific | 2025 |
| Carehealth Ltd | Health & social care | 2018 |
| Carehome Payrolls (2014) Ltd | Professional & scientific | 2014 |
| Carlcroft Midlands Limited | Other services | 2014 |
| Carlie Global Trading Ltd | Wholesale & retail | 2024 |
| Carnell Cleaning Limited | Administrative & support | 2025 |
| Carney Pools Ltd | Hospitality | 2023 |
| Carter & Co Landscapes Limited | Administrative & support | 2025 |
| Carthy Accountants Limited | Professional & scientific | 2005 |
| Carthy Ventures Holdings Limited | Financial services | 2024 |
| Carvalho Brothers Ltd | Hospitality | 2025 |
| Carver (Willenhall) Limited | Real estate | 1924 |
| Carward Investments | Financial services | 2023 |
| Casa Plana Developments Ltd | Real estate | 2019 |
| Case Systems Limited | Information & communication | 2007 |
| CASP47 Creations Ltd | Information & communication | 2021 |
| Castle Express Stafford Ltd | Hospitality | 2024 |
| Castle Lighting Limited | Manufacturing | 1992 |
| Castle Mews Homes Limited | Households | 2010 |
| Castlefields Surgery GPF Limited | Professional & scientific | 2013 |
| Caterbee UK Co., Ltd | Manufacturing | 2021 |
| Catering UK Postelnicu Ltd | Transport & logistics | 2019 |
| Cathy HAO Freight Forwarding Co., Ltd | Wholesale & retail | 2023 |
| Caudwell Design Ltd | Professional & scientific | 2015 |
| Caudwell Holdings Limited | Real estate | 2019 |
| Caudwell Ltd | Real estate | 2015 |
| Caudwell Marine Limited | Manufacturing | 2018 |
| Caudwell Properties (100) Ltd | Real estate | 2008 |
| Caudwell Properties (101) Ltd | Real estate | 2008 |
| Caudwell Properties (102) Ltd | Real estate | 2008 |
| Caudwell Properties (107) Ltd | Real estate | 2009 |
| Caudwell Properties (108) Ltd | Real estate | 2010 |
| Caudwell Properties (109) Ltd | Real estate | 2011 |
| Caudwell Properties (110) Ltd | Real estate | 2011 |
| Caudwell Properties (111) Ltd | Real estate | 2023 |
| Caudwell Properties (112) Ltd | Real estate | 2023 |
| Caudwell Properties (France) Ltd | Financial services | 2013 |
| Caudwell Properties Limited | Real estate | 2004 |
| Cavendish Arms Ltd | Hospitality | 2021 |
| Cayambe Import and Export Co., Ltd | Wholesale & retail | 2025 |
| CB Rail Solutions Limited | Professional & scientific | 2025 |
| CB RE Advisory Limited | Administrative & support | 2023 |
| CC System Solutions Limited | Construction | 2019 |
| Ccml Properties Ltd | Real estate | 2025 |
| CCS Flooring Services Ltd | Construction | 2025 |
| CD Financial Consultants Limited | Other services | 2025 |
| CDM (Entertainment) Limited | Administrative & support | 2011 |
| Cecíliagol Ltd | Wholesale & retail | 2025 |
| Cedarhouseit Ltd | Information & communication | 2021 |
| Ceew Holdings Ltd | Financial services | 2025 |
| CEH Consulting and Accountancy Ltd | Professional & scientific | 2010 |
| Cellular Technology Europe Limited | Wholesale & retail | 2005 |
| Cenos Industrial Manufacture Co., Limited | Extraterritorial | 2013 |
| Centenary Lounge Investments Limited | Financial services | 2016 |
| Central Air and Sound Testing Ltd | Professional & scientific | 2024 |
| Central Caravan Services Ltd | Manufacturing | 2013 |
| Central Fasteners (Staffs) Limited | Wholesale & retail | 1998 |
| Central Forge UK Limited | Wholesale & retail | 2024 |
| Central GAS Solutions Limited | Construction | 2008 |
| Centrepoint Physiotherapy Ltd | Health & social care | 2024 |
| Century Oak Financial Solutions Ltd | Financial services | 2026 |
| Century Oak Properties Ltd | Real estate | 2023 |
| Century Oak Rentals Ltd | Real estate | 2024 |
| Ceon Tech Limited | Information & communication | 2025 |
| Cerrig Gwyn Developments Ltd | Real estate | 2024 |
| CEW Gifts Limited | Wholesale & retail | 2026 |
| CG Contracts 2016 Limited | Construction | 2016 |
| CGD Design Limited | Professional & scientific | 2019 |
| Cgteynau Limited | Wholesale & retail | 2025 |
| Chain Bathrooms and Tiles Limited | Wholesale & retail | 2023 |
| Chalkhive Spray Painters Limited | Construction | 2023 |
| Chamberlain Developments Limited | Construction | 2000 |
| Champion Hot Tubs Ltd | Other services | 2019 |
| Champion Textile Co., Ltd. | Manufacturing | 2013 |
| Chandler’S Creations Limited | Arts & recreation | 2025 |
| Changeworks Psychology Ltd | Health & social care | 2021 |
| Changxin International Trading Co., Ltd | Extraterritorial | 2020 |
| Changyuan Trading Co., Ltd | Wholesale & retail | 2023 |
| Chaosworld Ltd | Manufacturing | 2021 |
| Character Country Pubs Limited | Hospitality | 2002 |
| Charlie Bassett's Limited | Hospitality | 2015 |
| Charlie WCS Limited | Administrative & support | 2021 |
| Charlton Cloud Services Limited | Information & communication | 2019 |