| Comspace Limited | Information & communication | 2013 |
| Comyn Bruce Weddings Ltd | Hospitality | 2020 |
| Concepts Realised Limited | Professional & scientific | 1997 |
| Concord College International Limited | Education | 2017 |
| Condor Street Food Ltd | Hospitality | 2020 |
| Condover Community Events Ltd | Health & social care | 2026 |
| Condover Day Services Limited | Health & social care | 2025 |
| Condover Investments Ltd | Real estate | 2024 |
| Condover Motor Services Ltd | Wholesale & retail | 2022 |
| Conference & Event Management Services Ltd. | Administrative & support | 2005 |
| Coniston Lodge Management Company Limited | Households | 1983 |
| Coniston Recruitment Ltd | Administrative & support | 2016 |
| Connacht Cadogan Ltd | Professional & scientific | 2016 |
| Connect Security Ltd | Administrative & support | 2020 |
| Connex Carrier Services (Worldwide) Ltd | Information & communication | 2014 |
| Connolly Drive (Birmingham) Management Company Limited | Households | 2000 |
| Conrad Schwarz Ltd | Professional & scientific | 2016 |
| Conro and Sons Environmental Solutions Ltd | Water & waste | 2025 |
| Consafe Logistics Ltd | Information & communication | 2004 |
| Construction Estimating Software Ltd | Information & communication | 2021 |
| Construction Fire Safety Services Limited | Construction | 2025 |
| Consultano Ltd | Professional & scientific | 2019 |
| Contemi Solutions Limited | Information & communication | 2004 |
| Contemi Trading Solutions (London) Ltd | Information & communication | 2023 |
| Contemi UK Limited | Information & communication | 2008 |
| Contract Geotec Limited | Construction | 2007 |
| Contractor Taxation Services Limited | Professional & scientific | 1998 |
| Controstar Projects Ltd | Professional & scientific | 2024 |
| Convenient Carpets (Shrewsbury) Limited | Wholesale & retail | 2012 |
| Conversationalcrm Limited | Information & communication | 2010 |
| Cook Metalworks Limited | Manufacturing | 2010 |
| Cook Property Limited | Construction | 2001 |
| Cooking Kneads Limited | Wholesale & retail | 2014 |
| Cool Running (Shropshire) Limited | Transport & logistics | 2010 |
| Cool Services Limited | Construction | 2004 |
| Coopatex Limited | Professional & scientific | 2021 |
| Cooper & Jones Electrical Limited | Energy | 2015 |
| Coopers Court Management Limited | Administrative & support | 1990 |
| Copage Educational Services Ltd | Education | 2006 |
| Copperfield Place (Shifnal) Management Company Limited | Households | 2006 |
| Coppice House Management Company (NO 1) Limited | Households | 2006 |
| Coppice Rise (Chapeltown) Management Limited | Households | 2006 |
| Copthorne Complete Home Care Limited | Health & social care | 2018 |
| Copthorne Distribution Ltd | Wholesale & retail | 2024 |
| Copthorne Gate Limited | Households | 2005 |
| Copthorne Holdings Limited | Financial services | 2022 |
| Copthorne Love Ltd | Professional & scientific | 2021 |
| Copthorne Reablement Therapy LLP | | 2026 |
| Copy-Write Print Shop (Shrewsbury) Limited | Manufacturing | 1983 |
| Coracle Cars Ltd | Transport & logistics | 2024 |
| Corbet Arms Limited | Hospitality | 2009 |
| Corbishley Ventures Limited | Financial services | 2024 |
| Core Taurus Limited | Financial services | 2018 |
| Core Technologies Ltd | Information & communication | 2004 |
| Corfield Brothers Limited | Construction | 2013 |
| Corfields Heating Limited | Construction | 2012 |
| Corkbark UK Ltd | Wholesale & retail | 2025 |
| Corleone Luxury Travel Ltd | Transport & logistics | 2025 |
| Corndon Hill Estates Ltd | Construction | 2026 |
| Cornfield Meadows Management Company Limited | Households | 2019 |
| Cornice Cupboard Limited | Manufacturing | 2015 |
| Cornmill Square Management Company Limited | Households | 2002 |
| Cornovii Developments Limited | Construction | 2019 |
| Cornovii Investments (Shropshire) Limited | Real estate | 2023 |
| Corporate Holdings Ltd | Real estate | 2019 |
| Cortis Electrical Ltd | Construction | 2017 |
| Cosmo Internet Ltd | Wholesale & retail | 2012 |
| Coss-Co Ltd | Professional & scientific | 2017 |
| Cosy Cottage Lettings Limited | Real estate | 2020 |
| Cote D'Azur Villa Rentals Ltd | Real estate | 2007 |
| Cotton Gate Developments Ltd | Construction | 2025 |
| Cottonfield Tech Ltd | Information & communication | 2023 |
| Couleurlive Ltd | Arts & recreation | 2023 |
| Coulthard Continental | Professional & scientific | 2011 |
| Council for Learning Outside the Classroom | Education | 2008 |
| Country Contractors Limited | Construction | 2019 |
| Countrywide Birmingham North Ltd | Agriculture & fishing | 2023 |
| Countrywide Homeloans Limited | Financial services | 2005 |
| County Goldsmiths Ltd | Wholesale & retail | 2014 |
| County of Salop Steam Engine Society Limited(The) | Hospitality | 1982 |
| County Signpost Ltd | Information & communication | 2001 |
| Coupette Events Ltd | Administrative & support | 2019 |
| Court C Limited | Wholesale & retail | 2023 |
| Court Maintenance Limited | Households | 1981 |
| Courtyard Dental Care Ltd | Health & social care | 2025 |
| Cousins Haulage Ltd | Transport & logistics | 2021 |
| Cousteau Limited | Health & social care | 2020 |
| Cowan’S Estate Management Ltd | Real estate | 2019 |
| Cowell Marine Systems Limited | Professional & scientific | 2022 |
| Coya Ltd | Professional & scientific | 2012 |
| CPE Engineering UK Ltd | Professional & scientific | 2024 |
| CR & GM Limited | Education | 2020 |
| CR Livestock LLP | | 2024 |
| Crackmaths Ltd | Education | 2023 |
| Cradley Leasing Limited | Administrative & support | 1996 |
| Craft Burgers Ltd | Hospitality | 2025 |
| Craig Marsden Decorating Services Limited | Construction | 2012 |
| Craig Swain Electrical Ltd | Construction | 2023 |
| Craigrheath Limited | Information & communication | 2016 |
| Cranham (Abbeydale) Management Company Limited | Households | 1989 |