| Cavaliero Limited | Professional & scientific | 2016 |
| Cavall Advisory Ltd | Professional & scientific | 2024 |
| Cave Street Lettings Limited | Real estate | 2024 |
| Cavendish Management (Bath) Limited | Real estate | 2016 |
| CBA 31 RTM Company Limited | Households | 2008 |
| CBN (UK) Limited | Professional & scientific | 2011 |
| Ccbear Limited | Real estate | 2019 |
| Cdixon Consulting Ltd | Professional & scientific | 2025 |
| Ceciart Consulting Ltd | Professional & scientific | 2023 |
| Cecil Curated Ltd | Administrative & support | 2026 |
| Cedar Lyme Limited | Real estate | 2004 |
| Cedarberg Limited | Professional & scientific | 2008 |
| Cedo Sound Ltd | Arts & recreation | 2014 |
| Celb Property Limited | Administrative & support | 2007 |
| Celebration Bars Limited | Hospitality | 2010 |
| Celestial Flowers Limited | Wholesale & retail | 2025 |
| Celestial TEK Limited | Arts & recreation | 2022 |
| Celian Ltd | Wholesale & retail | 2019 |
| Celtic Land Limited | Construction | 1997 |
| Centaur Leadership Limited | Professional & scientific | 2015 |
| Central Bath Property Management Ltd | Real estate | 2026 |
| Centre for Dentistry Limited | Health & social care | 2011 |
| Centre for Supervision Training and Development Ltd | Other services | 2018 |
| Centre for Therapeutic Storywriting Ltd | Education | 2013 |
| Centre Stage (14) Ltd | Professional & scientific | 2018 |
| Centurion Travel Limited | Transport & logistics | 1989 |
| Ceocorp Limited | Professional & scientific | 2015 |
| Ceps PLC. | Professional & scientific | 1952 |
| Ceramic Trade Limited | Wholesale & retail | 2019 |
| Ceramiglobe Ltd | Wholesale & retail | 2026 |
| Cerebro Legal Ltd | Professional & scientific | 2025 |
| Cetek Limited | Professional & scientific | 2013 |
| Ceth Construction Limited | Construction | 2007 |
| Cewp Ltd | Wholesale & retail | 2015 |
| CFH Document Solutions Ltd | Wholesale & retail | 1977 |
| CFH Holdco Limited | Financial services | 2017 |
| CFH Tradeco Limited | Financial services | 2017 |
| CG Holiday Lets LLP | | 2018 |
| CH & HH Consultancy Limited | Manufacturing | 1987 |
| CH Cars Bath Limited | Wholesale & retail | 2023 |
| CH Facilities Services Ltd | Energy | 2023 |
| CH Family Company Ltd | Real estate | 2021 |
| CH Translations Limited | Professional & scientific | 2018 |
| CH1820 Limited | Wholesale & retail | 1976 |
| Chaa Amma Ltd | Real estate | 2023 |
| Chaa Amma Property Management Ltd | Real estate | 2024 |
| Chai Creative Ltd | Information & communication | 2015 |
| Chai Moorland Limited | Hospitality | 2024 |
| Chai N Chutney Ltd | Hospitality | 2024 |
| Chai Walla (Bath) Limited | Hospitality | 2017 |
| Chai Walla Property Limited | Real estate | 2017 |
| Chalapso & Co Ltd | Extraterritorial | 2023 |
| Chalfont Productions Limited | Information & communication | 2013 |
| Chalford Properties Ltd | Real estate | 2020 |
| Chalkhill Blue Consulting Limited | Professional & scientific | 2011 |
| Chaloner Home Renovations Ltd | Construction | 2012 |
| Champion Real Estate Ltd. | Real estate | 1999 |
| Champions Live Ltd | Arts & recreation | 2024 |
| Chance 2 Change Energy Ltd | Professional & scientific | 2020 |
| Change Properties Limited | Construction | 2017 |
| Changepoint Properties Ltd | Real estate | 2020 |
| Changepoint Solutions Limited | Professional & scientific | 2007 |
| Changingpeople Limited | Administrative & support | 2007 |
| Channel Publications Limited | Information & communication | 1998 |
| Channeled Gateway Ltd | Health & social care | 2025 |
| Channelwave Limited | Professional & scientific | 2024 |
| Chantry Business Management Limited | Professional & scientific | 2013 |
| Chantry Gardens (Trowbridge) Management Limited | Extraterritorial | 2018 |
| Chaos Design Consultants Limited | Arts & recreation | 2003 |
| Chaos Investments Ltd | Professional & scientific | 2012 |
| Chapel Arts Centre Limited | Arts & recreation | 2005 |
| Chapel Arts Foundation | Arts & recreation | 2015 |
| Chapel Barton House Co. Limited | Hospitality | 2007 |
| Chapel ROW Beauty Rooms Ltd | Other services | 2021 |
| Chapman and Chapman Limited | Health & social care | 2003 |
| Chappell & DIX Limited | Construction | 1990 |
| Chaps Design Limited | Professional & scientific | 2025 |
| Chapter 2 Architects Ltd | Professional & scientific | 2023 |
| Charging Bull Limited | Professional & scientific | 2015 |
| Charing Cross Estates LLP | | 2013 |
| Charing X Limited | Real estate | 2013 |
| Charlcombe Consulting Ltd | Information & communication | 2024 |
| Charlcombe Estates Limited | Construction | 2018 |
| Charlcombe Homes Bannerdown Limited | Construction | 2022 |
| Charlcombe Properties Limited | Real estate | 2002 |
| Charles Philip Limited | Other services | 2012 |
| Charlie Record Medical Ltd | Health & social care | 2024 |
| Charlotte House (Mulberry Park) Management Company Limited | Households | 2022 |
| Charlton Baker (Bath) Limited | Professional & scientific | 2013 |
| Charmbury Arms Limited | Hospitality | 2010 |
| Charmbury Management Limited | Administrative & support | 2010 |
| Chartered Financial Management (UK) Limited | Financial services | 2006 |
| Chat-E-Cycle C.I.C. | Health & social care | 2020 |
| Chatflo Technologies Ltd | Information & communication | 2026 |
| Chatham ROW (Maintenance) Limited | Households | 1980 |
| Chatleigh Energy Limited | Energy | 2014 |
| Chatleigh Farm Estate Ltd | Agriculture & fishing | 2025 |
| Chatleigh Holdings Limited | Professional & scientific | 2013 |
| Chatleigh Limited | Professional & scientific | 1998 |
| Chatleigh Property Developments Limited | Construction | 2017 |