| Calverstone Developments Limited | Construction | 1996 |
| Cambers Country Stores Limited | Wholesale & retail | 2013 |
| Cambrian Business Park (Mold) Management Company Limited | Households | 1989 |
| Cambrian House (Shrewsbury) RTM Company Limited | Households | 2025 |
| Cambrian House Shrewsbury Limited | Real estate | 2018 |
| Camellias Tea Rooms Limited | Hospitality | 2007 |
| Camlad Ecology Ltd | Professional & scientific | 2011 |
| Camlins EOT Limited | Extraterritorial | 2024 |
| Camp Fantastic Ltd | Education | 2021 |
| Campervan Warehouse Limited | Manufacturing | 2015 |
| Canalside Shrewsbury Limited | Households | 2023 |
| Canalt Limited | Real estate | 2014 |
| Candl Resources Consulting Limited | Professional & scientific | 2015 |
| Cando Doulas Community Interest Company | Education | 2020 |
| Canonbury House Management Company Limited | Households | 1992 |
| Canwick Villa Management Company Ltd | Households | 2018 |
| Cape Hill Management Company Limited | Households | 2012 |
| Capital Bars Frankwell Ltd | Administrative & support | 2019 |
| Capital Care Group Limited | Financial services | 2004 |
| Capital CMC Limited | Real estate | 2021 |
| Capital Construction Management Contractors Limited | Professional & scientific | 2020 |
| Capital Construction Management Limited | Professional & scientific | 1998 |
| Capital Entertainment (Midlands) Ltd | Administrative & support | 2020 |
| Capital Options Limited | Financial services | 2007 |
| Cappelli Elkington Ltd | Arts & recreation | 2018 |
| Captain's Place (Southampton) Management Company Limited | Households | 1988 |
| Captains View and Captains Walk Residents Estate Management Company Limited | Households | 2018 |
| Car Colour Shropshire Ltd | Wholesale & retail | 2017 |
| Car Master Garage Services Limited | Wholesale & retail | 2011 |
| Car Repair Adrian Limited | Wholesale & retail | 2024 |
| Caradoc Care Ltd | Health & social care | 2019 |
| Caradoc Design Engineering Ltd | Professional & scientific | 2019 |
| Caravansandcampers Ltd | Wholesale & retail | 2012 |
| Carbon Earth Limited | Professional & scientific | 2007 |
| Carbon Free NRG Ltd | Real estate | 2025 |
| Cardiff Bay Enterprise Ltd | Households | 2022 |
| Care Excellence Holdings Limited | Health & social care | 2018 |
| Care Means Ltd | Information & communication | 2026 |
| Careerframe Ltd. | Information & communication | 2025 |
| Caregan Limited | Professional & scientific | 2020 |
| Carentan Consulting Ltd | Professional & scientific | 2014 |
| Carey Assets Ltd | Financial services | 2025 |
| Carey Tyres Limited | Wholesale & retail | 2007 |
| Carl Jones Design Limited | Professional & scientific | 2003 |
| Carla Boulton Limited | Health & social care | 2018 |
| Carlie Barlow Health & Wellbeing Ltd | Other services | 2019 |
| Carlton Heights (Lincoln) Management Company Limited | Households | 2003 |
| Carmor Management Co. Limited | Households | 1985 |
| Carmunnock Holdings Ltd | Financial services | 2017 |
| Carn (Autos) Limited | Transport & logistics | 1987 |
| Carney Media Limited | Information & communication | 2023 |
| Caroline H Hall BSC FCA Ltd | Professional & scientific | 2013 |
| Carpanini Internationale Art Dealership Limited | Wholesale & retail | 2013 |
| Carpet Rack (Shrewsbury) Limited | Wholesale & retail | 2016 |
| Carrington Counselling and Wellbeing Limited | Health & social care | 2025 |
| Carrington Data Services Ltd | Information & communication | 2025 |
| Carrington Point Amenity Management Company Limited | Households | 2002 |
| Carrington Point Management Company Limited | Households | 2002 |
| Carroll & Williams LLP | | 2002 |
| Carscierge Limited | Wholesale & retail | 2024 |
| Carscope Ltd | Wholesale & retail | 2021 |
| Carter Motors Shrewsbury Limited | Wholesale & retail | 2024 |
| Cartoconsulting Limited | Information & communication | 2014 |
| Cartref Leisure Limited | Hospitality | 2015 |
| Cartwright QP Solutions Limited | Professional & scientific | 2006 |
| Carvell on the Square Ltd | Wholesale & retail | 2014 |
| Carvers Hill Estate Ltd | Agriculture & fishing | 2020 |
| CAS (Shrewsbury) Limited | Professional & scientific | 2020 |
| Casa Blue Studio Ltd | Other services | 2025 |
| Casamake Ltd | Real estate | 2019 |
| Cashinio Ltd | Real estate | 2017 |
| Cashmere Park (South Molton) Management Limited | Real estate | 2022 |
| Castillion Homes Ltd | Construction | 2006 |
| Castle Country Club Limited | Arts & recreation | 2004 |
| Castle Dental Technicians Limited | Health & social care | 2004 |
| Castle Gate (Management Company) Limited | Real estate | 2015 |
| Castle Gate Marlborough Way Management Company Limited | Households | 2008 |
| Castle Group Shrewsbury Ltd | Transport & logistics | 2025 |
| Castle Homes Holdings Limited | Financial services | 2018 |
| Castle Mews Berkhamsted Limited | Households | 2002 |
| Castle Mews Newark (Residents) Management Limited | Households | 1990 |
| Castle Safe (Holdings) Limited | Manufacturing | 2013 |
| Castle Safe Limited | Wholesale & retail | 2013 |
| Castle Tea Rooms and Restaurant Limited | Hospitality | 2025 |
| Castle Vaults Shrewsbury Ltd | Hospitality | 2022 |
| Castle View Close (West Midlands) Management Company Limited | Households | 2017 |
| Castlefields Accountancy Limited | Professional & scientific | 2013 |
| Castro Catering Equipment Ltd | Other services | 2019 |
| Castrum Services Limited | Professional & scientific | 2025 |
| Catali CN Ltd | Hospitality | 2026 |
| Catering by Cristian Limited | Hospitality | 2023 |
| Caterleon Limited | Wholesale & retail | 2025 |
| Caterpillar Shrewsbury Limited | Manufacturing | 1999 |
| Cathedral Court (Uttoxeter) Management Limited | Real estate | 2024 |
| Cattle Productions Ltd | Arts & recreation | 2011 |
| Cavendish Cleaning Ltd | Administrative & support | 2019 |
| Cavendish Domestic Services Ltd | Administrative & support | 2023 |
| Caviar and Cocktails Limited | Wholesale & retail | 2019 |
| CB Commercials WEM Ltd. | Wholesale & retail | 2023 |
| CBS Industrial Ltd | Administrative & support | 2010 |