| Chatleigh Security Trustees Limited | Financial services | 2021 |
| Chauffeur Plus Limited | Hospitality | 2019 |
| Chauffeur Travel Bath Ltd | Transport & logistics | 2009 |
| Cheesewedge (Bath) Limited | Real estate | 2025 |
| Chegini Holdings Limited | Real estate | 2025 |
| Chelsea Nails and Beauty Ltd | Other services | 2022 |
| Chelsea Road Buildings LLP | | 2025 |
| Chelverton Asset Management Holdings Limited | Professional & scientific | 2010 |
| Chelverton Asset Management Limited | Financial services | 1997 |
| Chelverton Group Holdings Limited | Financial services | 2024 |
| Chelverton UK Growth Opportunities PLC | Financial services | 2021 |
| Chen's Food & Catering Co. Ltd | Hospitality | 2024 |
| Cheong Sing Takeaway Limited | Hospitality | 2024 |
| Cherwell Mews Management Company Limited | Real estate | 1997 |
| Chewton Field Properties Limited | Real estate | 1999 |
| Chewton Field Restorations Limited | Construction | 1993 |
| Chez Holdings Ltd | Households | 2022 |
| Chic Building Developments Limited | Construction | 2018 |
| Chic Building Limited | Construction | 2018 |
| Chickadee Enterprises Ltd | Professional & scientific | 2019 |
| Child Sleep Training Ltd | Other services | 2015 |
| Childhood Trauma Recovery Network Ltd | Information & communication | 2022 |
| Chillcott Group Limited | Health & social care | 2025 |
| Chilli Bean Investments Limited | Real estate | 2010 |
| Chilli Bean Properties LLP | | 2010 |
| Chilli Family Noodles Limited | Hospitality | 2022 |
| Chillipots Consulting Limited | Professional & scientific | 2023 |
| Chilloutalready Ltd | Information & communication | 2013 |
| Chilton Court Bath (Management) Limited | Households | 1987 |
| Chilton Williams Limited | Administrative & support | 2008 |
| Chimney Centers Ltd | Real estate | 2013 |
| Chivers Whittock Limited | Hospitality | 2022 |
| Chloe Burroughs Ltd | Education | 2015 |
| Chocolate on Chocolate Ltd | Manufacturing | 2007 |
| Chord UK Limited | Information & communication | 2001 |
| Choux Box Limited | Manufacturing | 2019 |
| Chris Borton Consulting Ltd | Professional & scientific | 2010 |
| Chris Brown Edits Ltd | Information & communication | 2019 |
| Chris Burr Contracting Limited | Administrative & support | 2007 |
| Chris Cook Coaching Ltd | Arts & recreation | 2026 |
| Chris Cozens Consulting Ltd | Professional & scientific | 2016 |
| Chris Curran Ltd | Professional & scientific | 2023 |
| Chris Duffy and Associates Limited | Construction | 2005 |
| Chris Jones Consulting Limited | Information & communication | 2012 |
| Chris Jupp Consulting Limited | Professional & scientific | 2018 |
| Chris Monk Ballooning Ltd | Arts & recreation | 2024 |
| Chris Poore Limited | Construction | 2004 |
| Chris Stubbs Limited | Information & communication | 2014 |
| Christine Jensen Limited | Health & social care | 2015 |
| Christmas in Bath Ltd | Wholesale & retail | 2025 |
| Christopher Brett Ltd | Agriculture & fishing | 2002 |
| Christopher Easton Limited | Real estate | 2012 |
| Christopher Milton Stevens Limited | Wholesale & retail | 1993 |
| Christopher Wade Consulting Limited | Professional & scientific | 2022 |
| Christos Tsertsidis Ltd | Health & social care | 2022 |
| Chromalytic Limited | Professional & scientific | 2001 |
| Chromeo.Tech Limited | Manufacturing | 2023 |
| Chronicle Books Limited | Information & communication | 2020 |
| Chump Investments Limited | Construction | 2019 |
| Chump Shareholdings Ltd | Construction | 2019 |
| Church Farm Country Cottages Limited | Hospitality | 1997 |
| Church Farm Lane Development Ltd | Construction | 2024 |
| Church Farm Publow LLP | | 2010 |
| Church Hill House Management Company Limited | Households | 2025 |
| Church Lane Land & Property Limited | Households | 2019 |
| Ciaras Loos Ltd | Administrative & support | 2025 |
| Cinematica Media Ltd | Information & communication | 2013 |
| Cinesonic Ltd | Information & communication | 2026 |
| Cion Solutions Limited | Professional & scientific | 2010 |
| Cipeople Ltd | Information & communication | 2017 |
| Ciprian Tudose Ltd | Other services | 2022 |
| Circa Engineering Limited | Professional & scientific | 1995 |
| Circus Area Residents Association Limited | Households | 2013 |
| Circus Health Clinic Ltd | Health & social care | 2025 |
| Circus Health Limited | Manufacturing | 2019 |
| Circus Mansions Bath Limited | Households | 1991 |
| Circus Mews Bath Management Company Limited | Households | 1987 |
| Circus Mews Investment Limited | Households | 2007 |
| Ciriello Fennell Holdings Ltd | Financial services | 2022 |
| Citeab Limited | Information & communication | 2013 |
| City & Sanctuary Ltd | Professional & scientific | 2025 |
| City Financial Planning (Exeter) Limited | Financial services | 1998 |
| City Financial Planning Limited | Financial services | 1996 |
| City Freeholds Ltd | Real estate | 2009 |
| City Learners Driving School Ltd | Education | 2022 |
| City Tailors Ltd | Other services | 2010 |
| City Tailors Trading Limited | Other services | 2014 |
| City Taprooms Ltd | Hospitality | 2024 |
| City View Solutions Ltd | Administrative & support | 2025 |
| Cityven (Bath) Limited | Real estate | 1999 |
| Civilisation Limited | Professional & scientific | 2002 |
| Civitates Limited | Manufacturing | 2006 |
| CJ Bath Limited | Professional & scientific | 2010 |
| Cjsparse Golf Ltd | Wholesale & retail | 2023 |
| Cjwg Ltd | Information & communication | 2023 |
| CL Engineering Solutions Limited | Professional & scientific | 2013 |
| Clai Ltd | Information & communication | 2024 |
| Clair Strong Interior Design Limited | Professional & scientific | 2007 |
| Claire Richards Design Ltd | Financial services | 2020 |
| Claire Warnes Consulting Limited | Professional & scientific | 2024 |