| C Bond Services Ltd | Professional & scientific | 2018 |
| C E Construction Services Ltd | Wholesale & retail | 2025 |
| C.A.M Elite Solutions Limited | Other services | 2018 |
| C.J. Hurrell Limited | Real estate | 1961 |
| C.James Building Ltd | Construction | 2026 |
| C.R.H. Plumbing & Heating Ltd | Construction | 2018 |
| CA Graphix Ltd | Manufacturing | 2025 |
| Cachet Property Ltd | Households | 2025 |
| Cader Investments Limited | Construction | 2022 |
| Cain Restaurants Ltd | Hospitality | 2019 |
| Cale Property Ltd | Real estate | 2025 |
| Cameron Court Management Company Limited | Households | 1980 |
| Cameron Engineering & Motorsport Limited | Manufacturing | 2005 |
| Cameron Engineering Malvern Ltd | Professional & scientific | 2026 |
| Cameron Property Services Malvern Limited | Real estate | 2024 |
| Cameron Racing Engines Ltd | Professional & scientific | 2026 |
| Camo Hair (Gloucester) Limited | Other services | 2018 |
| Campbell Commerce Ltd | Wholesale & retail | 2021 |
| Campbell Consortium Ltd | Financial services | 2024 |
| Campbell Estates & Enterprises Ltd | Real estate | 2024 |
| Campbell Saber Co Ltd | Wholesale & retail | 2024 |
| CAN Closure Sales Limited | Manufacturing | 1999 |
| Cantaloupe Ltd | Professional & scientific | 2015 |
| Capability Events Limited | Arts & recreation | 2008 |
| Capital 42 Holdings Limited | Financial services | 2024 |
| Capital Petroleum Services Limited | Wholesale & retail | 1997 |
| Care 4 ME Limited | Health & social care | 2008 |
| Cargoways Logistics & Transport Ltd | Transport & logistics | 2016 |
| Carina Consulting Limited | Professional & scientific | 2011 |
| Caroline Leah PR Limited | Administrative & support | 2005 |
| Caroline Livesey Consulting Ltd | Professional & scientific | 2017 |
| Case Consultants (UK) Limited | Information & communication | 2010 |
| Castle Compliance Services Limited | Professional & scientific | 2006 |
| Castle Haven Management Limited | Hospitality | 2012 |
| Castle Keep Holdings Limited | Financial services | 2017 |
| Catachem Solutions Limited | Other services | 2012 |
| Catalina Resources PLC | Mining & quarrying | 2006 |
| Catering Collaborations Ltd | Professional & scientific | 2018 |
| Cattell and Lloyd Limited | Real estate | 1998 |
| CCL Home Improvements Ltd | Construction | 2021 |
| Cedarbranch Limited | Construction | 1983 |
| Celestia Capital Partners Limited | Financial services | 2025 |
| Celia Duke Limited | Professional & scientific | 2017 |
| CEM Utilities Ltd | Construction | 2024 |
| CEN Consult Limited | Financial services | 2024 |
| Central & Commercial Property Investments Limited | Real estate | 2011 |
| Central Technology Belt | Professional & scientific | 2003 |
| Centre Enterprises Limited | Information & communication | 2000 |
| Centremaps Limited | Information & communication | 2003 |
| Chalfont Property Developments Limited | Real estate | 2003 |
| Chambers Governance Services Limited | Professional & scientific | 2023 |
| Changemethod Limited | Information & communication | 2015 |
| Chapel Orchard Management Company Limited | Households | 2010 |
| Charlbury Management Malvern Limited | Real estate | 2015 |
| Charlecote Management Company Limited(The) | Real estate | 1986 |
| Charles Eden Limited | Construction | 1963 |
| Charles Faram & Co.,Limited | Wholesale & retail | 1961 |
| Charles Hinitt & Associates Limited | Professional & scientific | 2005 |
| Charles Wade Developments Limited | Construction | 2018 |
| Charliefarrant Ltd | Manufacturing | 2009 |
| Chartbay Limited | Real estate | 2000 |
| Cheri Cleaning Services Ltd | Administrative & support | 2024 |
| Chewie Ltd | Health & social care | 2021 |
| CHIEF77 Consulting Ltd | Professional & scientific | 2021 |
| Chilli Pepper Software Limited | Information & communication | 2018 |
| Chiron World Sports Cars Limited | Manufacturing | 2002 |
| Chromate Holdings Limited | Financial services | 2023 |
| Church Farm Mathon Limited | Households | 1991 |
| Churchill Graham Limited | Wholesale & retail | 1982 |
| Circular Commerce Ltd | Information & communication | 2018 |
| Civil Structures Limited | Construction | 1967 |
| Cj's Carpentry & Installations Ltd | Manufacturing | 2023 |
| CJS Consulting Limited | Information & communication | 1999 |
| CKH Botanicals Ltd | Financial services | 2023 |
| Clarendon Court (Malvern) Limited | Administrative & support | 2012 |
| Clarendon Estates Limited | Households | 1984 |
| Clarkburgh Properties Limited | Real estate | 1999 |
| Clarke Roxburgh Properties Limited | Real estate | 1962 |
| Classic Bulbs Limited | Extraterritorial | 2024 |
| Clearaway Mini Skips (Worcester) Limited | Other services | 1985 |
| Clearprime Limited | Financial services | 1990 |
| Clearwave Air UK Limited | Wholesale & retail | 2017 |
| Clifton House (Malvern) Limited | Real estate | 2008 |
| Clinex Research Ltd | Professional & scientific | 2018 |
| Clinical Portal Limited | Health & social care | 2022 |
| Clive John Productions Limited | Arts & recreation | 2020 |
| Clockwork Catering Limited | Hospitality | 2003 |
| Cloud Accounting (Malvern) Limited | Professional & scientific | 2018 |
| Clouds END Developments Ltd | Professional & scientific | 2006 |
| CLT Construction Consultants Limited | Professional & scientific | 2022 |
| CNA Property Rentals Ltd | Real estate | 2022 |
| Coast Locations Limited | Professional & scientific | 2006 |
| Cobraemergency Ltd | Information & communication | 2019 |
| Cobwebs (Austrey) Limited | Hospitality | 2009 |
| Coco Software Ltd | Information & communication | 2021 |
| Coelkea Management Limited | Households | 1990 |
| COG Containers Ltd | Administrative & support | 2018 |
| Coinage Partners LLP | | 2015 |
| Coldstream Consulting Limited | Professional & scientific | 2022 |
| Coljen Limited | Professional & scientific | 2007 |