| Castle Combe Racing Club Limited | Arts & recreation | 2005 |
| Castle Combe Racing Trust Limited | Arts & recreation | 2008 |
| Catalina Freight Ltd | Transport & logistics | 2026 |
| Catalyst Core Operations Limited | Education | 2020 |
| Catalyst Studio Earth Ltd | Information & communication | 2024 |
| Catch EM ALL Collectables Ltd | Wholesale & retail | 2024 |
| Catchment Limited | Information & communication | 2026 |
| Caterfix Kitchens Limited | Manufacturing | 2012 |
| Cats on Vacation Limited | Other services | 2025 |
| Causeway Chippenham (Management) Limited(The) | Hospitality | 1983 |
| Causeway Developments Ltd | Real estate | 2003 |
| CB & RB Consulting Limited | Information & communication | 2010 |
| CB PUB Co (South West) Ltd | Hospitality | 2023 |
| Cbfp UK Ltd | Financial services | 2022 |
| Cblc Trading Limited | Real estate | 2020 |
| CC Applications Ltd | Information & communication | 2025 |
| CC Carpentry Limited | Manufacturing | 2002 |
| CC Squared Property Ltd | Real estate | 2020 |
| Ccagm Limited | Transport & logistics | 2023 |
| CD Fencing Holdings Limited | Financial services | 2025 |
| CDA Products Limited | Wholesale & retail | 2009 |
| CDC Hospitality Limited | Administrative & support | 2024 |
| CDM Yacht Consulting Ltd | Other services | 2015 |
| Cedarwood Services Limited | Information & communication | 2015 |
| CEL (Logistics) Limited | Extraterritorial | 1997 |
| Celtic Care Services Limited | Other services | 2001 |
| Cennin Pedr Ltd | Real estate | 2025 |
| Centouno Ltd | Agriculture & fishing | 2024 |
| Central Hydraulics (Manchester) Limited | Manufacturing | 1997 |
| Cepen Independent Financial Advice Limited | Financial services | 2013 |
| Cepen Resources Ltd | Professional & scientific | 2008 |
| Cerberus Business Solutions Limited | Information & communication | 2013 |
| Ceylo Ltd | Wholesale & retail | 2025 |
| CF Projects Limited | Construction | 2010 |
| CFM Properties Ltd | Real estate | 2017 |
| CG Ecom Ltd | Wholesale & retail | 2024 |
| CH Electrical Services Ltd | Construction | 2023 |
| Chalkland Vets Limited | Professional & scientific | 2018 |
| Chalky White's Brickwork Limited | Construction | 2023 |
| Challenge Sustainability Limited | Professional & scientific | 2017 |
| Chamberlain Berry LLP | | 2009 |
| Chamonix Hard Cross Limited | Administrative & support | 2014 |
| Changing Point Therapy Ltd | Professional & scientific | 2025 |
| Chaos Publishing Limited | Wholesale & retail | 2010 |
| Charity Direct Debits Limited | Other services | 2008 |
| Charity PAY Limited | Administrative & support | 2005 |
| Charity Tax Group | Other services | 2012 |
| Charlbury Guns Limited | Other services | 2016 |
| Charlcutt Farms Limited | Agriculture & fishing | 1974 |
| Charles Cole Construction Services Ltd | Construction | 2013 |
| Charles TYE Limited | Information & communication | 2020 |
| Charlie Creative Limited | Administrative & support | 2012 |
| Charlotte Wood Consultancy Limited | Professional & scientific | 2022 |
| Chase Manhattan Direct Limited | Wholesale & retail | 2007 |
| Chase Works Ltd | Real estate | 2018 |
| Chatley Farm Ltd | Agriculture & fishing | 2012 |
| Chaveywell Limited | Real estate | 2023 |
| Checchia Construction Limited | Construction | 2015 |
| Chequp Health Limited | Professional & scientific | 2020 |
| Cherry Blossom Preschool Ltd | Health & social care | 2022 |
| Chessgrove Shooting School Limited | Arts & recreation | 2018 |
| Cheung Limited | Professional & scientific | 2009 |
| Childs Farm Orchard Limited | Agriculture & fishing | 2022 |
| Chili Panir Limited | Hospitality | 2025 |
| Chilli Black Ltd | Hospitality | 2026 |
| Chilvester Group Ltd | Financial services | 2019 |
| Chilvester Investments Ltd | Financial services | 2021 |
| Chilvester Limited | Financial services | 2002 |
| Chin - Chin Inns Ltd | Hospitality | 2018 |
| China Insight Limited | Professional & scientific | 2023 |
| Chippendale and Clark Holdings Ltd | Financial services | 2019 |
| Chippenham 2020 LLP | | 2010 |
| Chippenham Animal Care Ltd | Agriculture & fishing | 2017 |
| Chippenham Archers Limited | Arts & recreation | 2017 |
| Chippenham Car Wash Ltd | Wholesale & retail | 2022 |
| Chippenham Chamber and Town Team CIC | Administrative & support | 2025 |
| Chippenham Film Club CIC | Information & communication | 2022 |
| Chippenham Folk Festival Community Interest Company | Arts & recreation | 2015 |
| Chippenham Golf Centre Limited | Arts & recreation | 2009 |
| Chippenham Golf Club Limited | Arts & recreation | 2015 |
| Chippenham Hackspace Ltd | Other services | 2017 |
| Chippenham Masonic Centre Limited | Other services | 2011 |
| Chippenham Men's Shed Ltd | Health & social care | 2017 |
| Chippenham Mini Market Ltd | Wholesale & retail | 2025 |
| Chippenham Motor Company EOT Limited | Financial services | 2023 |
| Chippenham Motor Company Limited | Wholesale & retail | 1985 |
| Chippenham Pallet Company Limited | Manufacturing | 2001 |
| Chippenham Paving and Groundwork’S Ltd | Construction | 2021 |
| Chippenham Rifle and Pistol Club CIC | Arts & recreation | 2020 |
| Chippenham Rotary and Inner Wheel Trust Limited | Health & social care | 1986 |
| Chippenham Rotary Company Limited | Hospitality | 1984 |
| Chippenham Rugby Football Club Limited | Arts & recreation | 2009 |
| Chippenham Scaffolding & Brickwork Limited | Construction | 2004 |
| Chippenham Scaffolding Limited | Construction | 2024 |
| Chippenham Take Away Limited | Hospitality | 2021 |
| Chippenham Taxi Ltd | Transport & logistics | 2021 |
| Chippenham Town FC Academy Limited | Education | 2019 |
| Chippenham Town FC Junior Academy Limited | Education | 2021 |
| Chippenham Town Football Club Limited | Administrative & support | 2002 |
| Chippenham Uniform Exchange C.I.C. | Other services | 2022 |