| Chestnut House (Heavitree) Management Company Limited | Hospitality | 2009 |
| Chetto Holdings Limited | Financial services | 2024 |
| Chetty & Co (SW) Ltd | Real estate | 2024 |
| Chew Investments Ltd | Real estate | 2021 |
| Chew Properties SW Ltd | Real estate | 2025 |
| Chew Valley Investments Limited | Real estate | 2016 |
| Chew Valley Properties (Axbridge) Ltd | Construction | 2024 |
| Chew Valley Properties (Hinton Blewett) Ltd | Real estate | 2021 |
| Chew Valley Properties (Loxton) Ltd | Construction | 2021 |
| Chew Valley Properties (Lympsham) Ltd | Construction | 2024 |
| Chew Valley Properties (Westham) Ltd | Real estate | 2022 |
| Chew Valley Properties Limited | Real estate | 2012 |
| CHI Accommodations Ltd | Real estate | 2022 |
| CHI Property Investments Ltd | Real estate | 2022 |
| Chichester Coates Management Co. Limited | Households | 1981 |
| Chicken Point Exmouth Ltd | Hospitality | 2024 |
| Chilli Heating Ltd | Construction | 2016 |
| Chilli Twist Ltd | Information & communication | 2015 |
| Chillmoor Limited | Agriculture & fishing | 2021 |
| Chiltern Hearing Ltd | Health & social care | 2021 |
| Chiltern House Management Company Limited | Administrative & support | 2001 |
| Chilton View Consultancy Ltd | Real estate | 2023 |
| Chimeara Ltd | Extraterritorial | 2004 |
| China Health Clinic Limited | Health & social care | 2017 |
| Chinese Natural Healing Limited | Health & social care | 2014 |
| Chip Financial Nominees Ltd | Financial services | 2021 |
| Chiplo Bato Limited | Real estate | 2025 |
| Chiropractic Care Limited | Other services | 1998 |
| Chiropractic Matters Limited | Health & social care | 2011 |
| Chisalita Dent Ltd | Health & social care | 2017 |
| Chosen Property Solutions Limited | Real estate | 2022 |
| Chouihna Property Group Limited | Real estate | 2024 |
| CHP Finishing Services Limited | Construction | 2008 |
| Chris Bitschi Ltd | Professional & scientific | 2024 |
| Chris Boardman Transport Ltd | Transport & logistics | 2020 |
| Chris Cross SKI Ltd | Arts & recreation | 2019 |
| Chris Davey Limited | Financial services | 2025 |
| Chris Davies Web Design Limited | Information & communication | 2018 |
| Chris Smith Building Services Limited | Construction | 2013 |
| Chrisene Studios Limited | Wholesale & retail | 2026 |
| Christ Services Ltd | Real estate | 2018 |
| Christina Konrath Artwork and Design Limited | Professional & scientific | 2014 |
| Chrome River International Ltd. | Information & communication | 2008 |
| Chrysalis Hospitality Solutions Ltd | Wholesale & retail | 2015 |
| Chubb Property Renovations Ltd | Construction | 2025 |
| Churchill Motors Limited | Wholesale & retail | 2009 |
| Churchill Residence Limited | Hospitality | 2017 |
| Churchill Tattoo Limited | Arts & recreation | 2026 |
| CHW Holdings Ltd | Financial services | 2025 |
| Cigar Club LDN Limited | Wholesale & retail | 2021 |
| Cimelium Consulting Limited | Professional & scientific | 2018 |
| Cimelium Limited | Financial services | 2016 |
| Cimelium Property Limited | Real estate | 2018 |
| Cimt Maths Ltd | Education | 2025 |
| Cine Power & Light International Limited | Extraterritorial | 2001 |
| Cine Power Consultancy & Design Ltd | Extraterritorial | 2001 |
| Cineon Training Limited | Information & communication | 2010 |
| Cinnamon Fine Art Limited | Professional & scientific | 2013 |
| Cinuelica Limited | Wholesale & retail | 2016 |
| Circa Holdings Limited | Real estate | 2025 |
| Circlesquared Analysis Ltd | Professional & scientific | 2010 |
| Cirencester Stays Ltd | Hospitality | 2025 |
| City Dreams Property Management Ltd | Real estate | 2024 |
| City Flooring (Exeter) Ltd | Wholesale & retail | 2018 |
| City Group Medical Holdings Limited | Financial services | 2021 |
| City Group Medical Limited | Health & social care | 2019 |
| City Inventories Ltd | Real estate | 2017 |
| City Padel Bodmin Ltd | Arts & recreation | 2025 |
| City Padel Centers Ltd | Arts & recreation | 2024 |
| City Padel Holdings Limited | Financial services | 2025 |
| City Padel Plymouth Ltd | Arts & recreation | 2025 |
| City Padel Taunton Ltd | Arts & recreation | 2025 |
| City Revolution Ltd | Real estate | 2013 |
| City Science Corporation Limited | Professional & scientific | 2015 |
| City West Country Limited | Wholesale & retail | 2001 |
| City West Motor Group Limited | Wholesale & retail | 2026 |
| Citybank Capital Ltd | Extraterritorial | 2018 |
| Civic Systems LAB Ltd | Professional & scientific | 2025 |
| Civik Care Group Limited | Health & social care | 2025 |
| Civil Solutions (Holdings) Limited | Wholesale & retail | 2021 |
| Civil Solutions Limited | Wholesale & retail | 2000 |
| Civil Studio Limited | Professional & scientific | 2022 |
| CJ & MW Enterprises Limited | Real estate | 2023 |
| CJ Leon Limited | Real estate | 2025 |
| CJ Luxury Property Group Ltd | Real estate | 2025 |
| CJA Coaching Limited | Education | 2025 |
| CJC (Exeter) Limited | Construction | 2015 |
| CJC Aerotech Limited | Manufacturing | 2015 |
| Cjcashe Ltd | Wholesale & retail | 2025 |
| CJG Metals Limited | Manufacturing | 2020 |
| CJG Plumbing Services Ltd | Construction | 2025 |
| CJH Land (SW) Limited | Real estate | 2020 |
| CJJ Property Ltd | Real estate | 2018 |
| Cjtg Engineering Limited | Professional & scientific | 2022 |
| CK1 Stop (Exeter) Ltd | Construction | 2023 |
| CKS Care Limited | Health & social care | 2014 |
| CL Developments (SW) Limited | Construction | 2019 |
| CL Residential Plym Ltd | Real estate | 2024 |
| Cladglaze (SW) Ltd | Construction | 2022 |
| Claibon Property Services Limited | Administrative & support | 2003 |