| Calbrizith Ltd | Administrative & support | 2023 |
| Caldewell Ltd | Professional & scientific | 2016 |
| Cale Investments Limited | Financial services | 2026 |
| Calscience Cosmetics Limited | Health & social care | 2014 |
| Calscience Group Limited | Professional & scientific | 2014 |
| Calycanthus Ltd | Hospitality | 2022 |
| Cantab Tours Limited | Administrative & support | 2022 |
| Cardam Homes Ltd | Construction | 2019 |
| Cardamom Pershore Limited | Hospitality | 2022 |
| Carglow Limited | Agriculture & fishing | 1997 |
| Carlink Exports Limited | Wholesale & retail | 2025 |
| Carlton Smith Developments Ltd | Construction | 2016 |
| Carlton Smith Limited | Manufacturing | 1989 |
| Carow Medical Ltd | Financial services | 2024 |
| Carp King Ltd | Wholesale & retail | 2021 |
| Carpe Diem Motorsport Ltd | Arts & recreation | 2019 |
| Carpentry First Limited | Wholesale & retail | 2003 |
| Carsmetix Limited | Manufacturing | 2012 |
| Cast Iron Range Cookers Limited | Wholesale & retail | 2003 |
| Catananche Ltd | Wholesale & retail | 2022 |
| CBD Health Ltd | Professional & scientific | 2023 |
| CE Servicing Limited | Other services | 2021 |
| Cedar Consultants Ltd | Professional & scientific | 2011 |
| Central Business Agency Ltd | Professional & scientific | 2022 |
| Central Machinery Limited | Construction | 2002 |
| Centremaps Holding Company Limited | Financial services | 2025 |
| Cervoth Ltd | Administrative & support | 2024 |
| CF Maher Ltd | Transport & logistics | 2022 |
| CFO Advisory Partnership LLP | | 2011 |
| CFO Associates Limited | Professional & scientific | 2003 |
| Cgas (Worcs) Ltd | Professional & scientific | 2018 |
| Chainaddress Ltd | Transport & logistics | 2019 |
| Chanargi Ltd | Administrative & support | 2020 |
| Chariotpacific Ltd | Administrative & support | 2019 |
| Charles Leather Residential Ltd | Real estate | 2025 |
| Charlie Martin Motorsport Limited | Wholesale & retail | 2026 |
| Chase Heating Limited | Wholesale & retail | 1987 |
| Checketts Property Limited | Construction | 2019 |
| Cheltenham Therapy Rooms Limited | Real estate | 2019 |
| Chloe Developments Ltd | Construction | 2021 |
| Chung-Johnson Holding Limited | Financial services | 2024 |
| Chunklobster Ltd | Transport & logistics | 2019 |
| Church Farm Shrawley Ltd | Agriculture & fishing | 2021 |
| Church Green Amenity Limited | Households | 1994 |
| CIP & M Contracts Limited | Information & communication | 2025 |
| City Holdings Limited | Financial services | 2019 |
| CJ Hawker Limited | Financial services | 2021 |
| Clapton ROW Management Company Limited | Households | 2007 |
| Clara Holdings Limited | Real estate | 2015 |
| Classicpro UK Ltd | Manufacturing | 2020 |
| Clean Fish Aquatic Services Ltd | Administrative & support | 2023 |
| Cleancap Advisory Limited | Financial services | 2019 |
| Clear Vision National Window Cleaning Ltd | Administrative & support | 2015 |
| Clem Stevens Media Ltd | Professional & scientific | 2023 |
| Clesse (UK) Limited | Manufacturing | 2002 |
| Cleveland Stays Ltd | Hospitality | 2022 |
| Clifford Chambers Ltd | Transport & logistics | 2021 |
| Clifton-Crick Sharp & Co. Limited | Professional & scientific | 2012 |
| Cloud Dolphin Ltd | Information & communication | 2018 |
| CNH Autos Limited | Wholesale & retail | 2005 |
| Coach & Horses Pinvin Ltd | Hospitality | 2025 |
| Coach House Books Limited | Wholesale & retail | 2021 |
| Cobietech Ltd | Information & communication | 2026 |
| Code Mint Limited | Information & communication | 2009 |
| Coldborn Ltd | Wholesale & retail | 2018 |
| Coldeye Ltd | Manufacturing | 2024 |
| Collins Therapeutic Consulting Limited | Professional & scientific | 2003 |
| Combitec Limited | Other services | 1990 |
| Comms Monkey Ltd | Wholesale & retail | 2025 |
| Comparonate Ltd | Administrative & support | 2020 |
| Complete Spas Ltd | Wholesale & retail | 2008 |
| Coniston Homes Limited | Real estate | 1994 |
| Connected Future Solutions Ltd | Information & communication | 2017 |
| Constructvantage Ltd | Information & communication | 2025 |
| Contego Holdings Ltd | Financial services | 2024 |
| Converline Consulting Limited | Professional & scientific | 2026 |
| Convert Design Limited | Professional & scientific | 2008 |
| Cookhill Cricket Club Limited | Arts & recreation | 1997 |
| Coolmax (Evesham) Refrigeration Limited | Manufacturing | 2002 |
| Cooperage Pershore Ltd | Construction | 2016 |
| Corarentals Ltd | Real estate | 2025 |
| Corinium Investments Limited | Real estate | 2025 |
| Cornerstone Kitchens Limited | Construction | 1995 |
| Corngrove Developments Limited | Information & communication | 1973 |
| Cornyx Properties Limited | Real estate | 2017 |
| Corran Dean CIC | Health & social care | 2014 |
| Corran Support Limited | Other services | 2019 |
| Cotswold CNC Solutions Ltd | Manufacturing | 2019 |
| Cotswold Glass and Glazing Limited | Financial services | 2015 |
| Cotswold Nights Away Ltd | Hospitality | 2021 |
| Cottrill Civil Engineering Contractors Limited | Construction | 2001 |
| Countryside Consultants Limited | Professional & scientific | 2002 |
| Countryside Inns Ltd | Hospitality | 2025 |
| County Windows Ltd | Extraterritorial | 2011 |
| Couple of Lemons Ltd | Hospitality | 2026 |
| Courtvintage Ltd | Wholesale & retail | 2019 |
| Cox's Cars Limited | Wholesale & retail | 1972 |
| Craig Williams Designs & Innovations Ltd | Construction | 2015 |
| Creative City Networks CIC | Education | 2023 |
| Cricketerms Ltd | Administrative & support | 2018 |