| Creatura Limited | Professional & scientific | 2009 |
| Credi Solutions Limited | Administrative & support | 2025 |
| Crescent Building and Restoration Limited | Construction | 2019 |
| Crescent Carpentry Ltd | Construction | 2014 |
| Crescent Club Holding Ltd | Other services | 2023 |
| Crescent Electrical Solutions Limited | Construction | 2025 |
| Crescent Flowers Limited | Wholesale & retail | 2023 |
| Crescent Property Developments Ltd | Real estate | 2018 |
| Crescent Restaurants LLP | | 2021 |
| Crescent Tuition Ltd | Education | 2017 |
| Crest Estate Agents Limited | Real estate | 2006 |
| Crestmeade Limited | Real estate | 2020 |
| Crestova Hospitality Ltd | Hospitality | 2026 |
| Creyford Property Management Limited | Households | 1986 |
| Crickettots Ltd | Arts & recreation | 2011 |
| Crimperland Close Management Company Limited | Households | 2024 |
| Crimson Group Holdings Limited | Professional & scientific | 2007 |
| Crisp Cowley (Bath) Limited | Real estate | 2008 |
| Crisp Cowley (Holdings) Limited | Financial services | 2024 |
| Crisp Cowley Lettings Limited | Real estate | 2016 |
| Crispy Crunchy Ltd | Hospitality | 2025 |
| Croft Bars & Restaurants Ltd | Hospitality | 2024 |
| Croft Holdings Group Ltd | Hospitality | 2024 |
| Croft Properties Limited | Construction | 2001 |
| Cronfield Investments Limited | Real estate | 2001 |
| Cropspray Ltd | Administrative & support | 2011 |
| Cross Group Holdings Ltd | Professional & scientific | 2025 |
| Cross Manufacturing Company (1938) Limited | Manufacturing | 1938 |
| Cross Property Maintenance Limited | Construction | 2021 |
| Cross Roofing Contractors Ltd | Construction | 2025 |
| Crossfield's Engineering Ltd | Professional & scientific | 2024 |
| Crossman (Frome House) Ltd | Construction | 2021 |
| Crossman (Locks Hill) Ltd | Construction | 2022 |
| Crossman (Portland Street) Ltd | Construction | 2023 |
| Crossman (Russell Mews) Ltd | Construction | 2024 |
| Crossman (Sunny Glen) Limited | Construction | 2022 |
| Crossman Acquisitions Ltd | Construction | 2018 |
| Crossman Boat & Aviation Hire Ltd | Administrative & support | 2023 |
| Crossman Build Ltd | Construction | 2017 |
| Crossman Group Ltd | Financial services | 2018 |
| Crossman Homes (Payton) Ltd | Construction | 2025 |
| Crossman Homes Ltd | Financial services | 2025 |
| Crossman Land Limited | Real estate | 2013 |
| Crossman Planning & Consultancy Ltd | Professional & scientific | 2024 |
| Crossman Special Projects Ltd | Professional & scientific | 2024 |
| Crossman Tile & Flooring Limited | Construction | 2016 |
| Crossman(Clevedon Terrace) Ltd | Real estate | 2020 |
| Crossway Stables Limited | Agriculture & fishing | 2000 |
| Crowd Dynamics International Limited | Professional & scientific | 2010 |
| Crowdtech Limited | Information & communication | 2022 |
| Crown Copiers Limited | Wholesale & retail | 1995 |
| Crown Guardians (Bath) Limited | Other services | 2004 |
| Crown Hill Store Ltd | Wholesale & retail | 2025 |
| Crown International Guardians Ltd | Education | 2021 |
| Crown Office Supplies Limited | Wholesale & retail | 2000 |
| Crucible ( Strategic) Limited | Administrative & support | 2022 |
| Crumlish Consulting Ltd | Professional & scientific | 2023 |
| Crunch & Punch Homes Ltd | Real estate | 2024 |
| Crusader Park Management Company Limited | Professional & scientific | 2005 |
| Crux Estate Ltd | Real estate | 2009 |
| Crux of Bath Ltd | Professional & scientific | 2020 |
| CSE Jewellers Ltd | Manufacturing | 2024 |
| Csquared Real Estate LLP | | 2011 |
| CTO Collective Ltd | Information & communication | 2025 |
| CTV Properties Limited | Real estate | 2024 |
| Cube Electrical Ltd | Construction | 2024 |
| Cubik Commercial Limited | Financial services | 2022 |
| Cultivate Coaching and Tutoring Ltd | Education | 2021 |
| Cultural Forum for the Bath Area C.I.C. | Arts & recreation | 2012 |
| Curated CFO Limited | Professional & scientific | 2024 |
| Curated Housekeeping Ltd | Administrative & support | 2026 |
| Curated Property Investments Ltd | Real estate | 2023 |
| Curated Property Limited | Information & communication | 2024 |
| Curious Creat!Ve Ltd | Professional & scientific | 2024 |
| Curious Fitness Ltd | Arts & recreation | 2019 |
| Curious Lynx Games Ltd | Manufacturing | 2025 |
| Curious Universe UK Holdings Limited | Financial services | 2025 |
| Curious Universe UK Limited | Information & communication | 2017 |
| Curo Enterprise Limited | Construction | 2012 |
| Curo Finance Limited | Construction | 2021 |
| Curo Market Rented Services Limited | Real estate | 2003 |
| Curry Bazar Bath Ltd | Hospitality | 2018 |
| Curtis Dance Academy Limited | Education | 2006 |
| Curtis School of Dance Limited | Education | 2003 |
| Curvemedia Studios Limited | Information & communication | 2020 |
| Customer Kind Limited | Professional & scientific | 2017 |
| Customized Covers Limited | Manufacturing | 2009 |
| Customstories Ltd | Information & communication | 2024 |
| CUT and Construct Ltd | Construction | 2014 |
| Cutting Edge Fabrics Limited | Wholesale & retail | 2015 |
| CV Distillery Ltd | Manufacturing | 2022 |
| Cvbcn Ltd | Other services | 2025 |
| CVR Software Limited | | 1984 |
| CW Consulting Services Ltd | Professional & scientific | 2025 |
| CW01 Ltd | Administrative & support | 2022 |
| Cybasec Ltd | Information & communication | 2013 |
| Cyber Media Solutions Ltd | Information & communication | 1999 |
| Cycleccentric Ltd | Wholesale & retail | 2020 |
| Cyclo Art BUG Limited | Arts & recreation | 2023 |
| Cyclo BUG Limited | Arts & recreation | 2022 |