| Cassien Properties Limited | Real estate | 2012 |
| Castel Froma Neuro Care Limited | Health & social care | 2003 |
| Castle Brothers (Builders) Limited | Construction | 2013 |
| Castle Cars Private Hire Limited | Transport & logistics | 2018 |
| Castle D&D Ltd | Professional & scientific | 2022 |
| Castle Hotels & Taverns Limited | Hospitality | 1997 |
| Castle Nurseries Ltd | Real estate | 2015 |
| Castle Shutters & Blinds Ltd | Wholesale & retail | 2022 |
| Castle West Construction Limited | Construction | 2017 |
| Castlebridge Group Limited | Real estate | 2003 |
| Castlebridge Hospitality Limited | Hospitality | 2018 |
| Castlebridge Hotels Birmingham Airport Employment Limited | Hospitality | 2016 |
| Castlebridge Hotels Chester Opco Limited | Hospitality | 2017 |
| Castlebridge Hotels Coventry Trading Limited | Hospitality | 2020 |
| Castlebridge Hotels Group Limited | Hospitality | 2009 |
| Castlebridge Hotels Management Limited | Hospitality | 2011 |
| Castlebridge Hotels Winchester Opco Limited | Hospitality | 2007 |
| Castpearl Limited | Professional & scientific | 1983 |
| Catapulted Ltd | Administrative & support | 2024 |
| Catch 22 Promotions Limited | Arts & recreation | 2017 |
| Caterpillar Nursery (Leamington Spa) Limited | Education | 2004 |
| Catteralls Coaches (Southam) Limited | | 1975 |
| Caukin Studio Ltd | Construction | 2017 |
| Cavandot Ltd | Wholesale & retail | 2024 |
| Cavani Cambridge Ltd | Wholesale & retail | 2023 |
| Cavani Steels Ltd | Wholesale & retail | 2024 |
| CAW Property Investment Ltd | Real estate | 2023 |
| CB Group Investments Ltd | Real estate | 2025 |
| Cbrtcgsales Ltd | Wholesale & retail | 2026 |
| CBW 2022 LLP | | 2022 |
| CBW Financial Planning Limited | Financial services | 1996 |
| CBW FP Group Limited | Financial services | 2023 |
| CBW Trustees Limited | Administrative & support | 2021 |
| CC Property (CV5) Limited | Real estate | 2025 |
| CCB Sheet Steel Limited | Wholesale & retail | 2015 |
| CCH Skinfinity Limited | Health & social care | 2016 |
| Ccos Investment Ltd | Wholesale & retail | 2026 |
| CCR Events Ltd | Wholesale & retail | 2023 |
| CCY Ltd | Hospitality | 2020 |
| CD FEX Limited | Extraterritorial | 1996 |
| CDH Roofing (Warwickshire) Limited | Construction | 2026 |
| CE3 Limited | Real estate | 2019 |
| Cecil Court RTM Company Ltd | Real estate | 2026 |
| Cedar Sports Consultancy Limited | Professional & scientific | 2026 |
| Cedar Tree Farm Residents Association Limited | Real estate | 2002 |
| Celeb Productions Limited | Other services | 2012 |
| Celestial FOX Studios Limited | Information & communication | 2015 |
| Cellarvault Limited | Hospitality | 2024 |
| Celsius Design Holdings Limited | Financial services | 2015 |
| Celsius Property Ltd | Construction | 2025 |
| CEM Properties (Banbury) Limited | Real estate | 2017 |
| Cemt Property Ltd | Real estate | 2025 |
| Central Communication Projects Limited | Professional & scientific | 2011 |
| Central Communication Properties Ltd | Construction | 2015 |
| Central England Healthcare (Cannock) Limited | Health & social care | 2020 |
| Central England Healthcare (Coventry) Limited | Health & social care | 2007 |
| Central England Healthcare (Great Wyrley) Limited | Health & social care | 2002 |
| Central England Healthcare (Holdings) Limited | Financial services | 2018 |
| Central England Healthcare (Management) Ltd | Professional & scientific | 2019 |
| Central England Healthcare (Services) Ltd | Professional & scientific | 2019 |
| Central England Healthcare (Stoke) Limited | Health & social care | 2009 |
| Central England Healthcare (Wolverhampton) Limited | Health & social care | 2009 |
| Central England Healthcare Limited | Administrative & support | 2007 |
| Central Health Solutions Ltd. | Administrative & support | 2017 |
| Central Karate Academy CIC | Arts & recreation | 2024 |
| Central School of Massage Ltd | Education | 2024 |
| Centric Logistics Ltd | Other services | 2021 |
| CEP IFA Ltd | Financial services | 2020 |
| Cerberus Cyber Solutions Ltd | Information & communication | 2024 |
| Cerberus Software Ltd | Information & communication | 2018 |
| Cerp Limited | Real estate | 2023 |
| Cert'N'Fase Limited | Manufacturing | 2007 |
| Certair Ltd | Professional & scientific | 2025 |
| Certified Advocates' Ltd | Education | 2018 |
| CFC 0091 Limited | Administrative & support | 2013 |
| CFC0094 Limited | Other services | 2018 |
| CFT Leamington Limited | Wholesale & retail | 2025 |
| CGA Consult Ltd | Information & communication | 2024 |
| Chadwicks Designs Limited | Professional & scientific | 1998 |
| Chaffcombe Thorns Limited | Real estate | 1961 |
| Chahal Consultancy Services Limited | Information & communication | 2018 |
| Chalgrove Residencies Limited | Households | 1986 |
| Chall Investment Properties Limited | Real estate | 2023 |
| Change Weight Ltd | Administrative & support | 2012 |
| Changeout Ltd | Professional & scientific | 2018 |
| Chanzo Limited | Professional & scientific | 2005 |
| Chaos Brothers (UK) Limited | Wholesale & retail | 2007 |
| Chapel Court Wealth Planning Limited | Financial services | 1998 |
| Chapman Fabrications Limited | Manufacturing | 2025 |
| Chard-Tyrrell Ltd | Real estate | 2016 |
| Charging Bear Limited | Wholesale & retail | 2020 |
| Charlecote Barns Management Company Limited | Households | 2021 |
| Charles Harness Antiques Ltd | Wholesale & retail | 2019 |
| Charles Sebastian Protection Brokers Limited | Financial services | 2017 |
| Charlie Victor Limited | Hospitality | 2010 |
| Charlie Victor Mortgage Services Ltd | Financial services | 2020 |
| Charlo Aesthetic Limited | Other services | 2025 |
| Charlotte Grace Aesthetics Limited | Other services | 2020 |
| Charlotte Hume Communications Ltd | Professional & scientific | 2025 |
| Charsley Stone Ltd | Administrative & support | 2019 |