| Carleton Associates Management Limited | Professional & scientific | 2012 |
| Carmichael Electrical Services Limited | Construction | 2024 |
| Caroline O'Brien Healthcare Consultancy Services Ltd | Information & communication | 2017 |
| Carpe Astra Consulting Ltd | Professional & scientific | 2026 |
| Carpenters Arms Property Management Company Limited | Households | 2009 |
| Carpet Rolls & Remnants Ltd | Wholesale & retail | 2018 |
| Carpet Warehouse Ltd | Wholesale & retail | 2022 |
| Carrelle Properties Limited | Real estate | 2020 |
| Carry on Costumes Limited | Manufacturing | 2003 |
| Cars to Go Christchurch Limited | Wholesale & retail | 2004 |
| Carter Innovations Ltd | Construction | 2025 |
| Carter Trading Christchurch Ltd | Other services | 2025 |
| Cassiopeia Property Co Limited | Construction | 2016 |
| Cast Advanced Concretes Holdings Limited | Manufacturing | 2017 |
| Cast Advanced Concretes Limited | Manufacturing | 2003 |
| Castens Grosvenor Capital Limited | Construction | 2016 |
| Castle Lane East Limited | Households | 2013 |
| Castle Surveyors Limited | Professional & scientific | 2004 |
| Castlemead Management Company (2000) Limited | Households | 2000 |
| Castlemore Ltd | Professional & scientific | 2007 |
| Catalina Property Limited | Real estate | 2022 |
| Catering Equipment Auctions Limited | Wholesale & retail | 2022 |
| Catnap Systems Limited | Professional & scientific | 2025 |
| Causeway Construction Ltd | Construction | 2018 |
| Cavalier Management Ltd | Professional & scientific | 2021 |
| Cavendish Towers Ltd | Real estate | 2023 |
| Cazelots Limited | Financial services | 2013 |
| CB Coastal Services Ltd | Real estate | 2024 |
| CC Remote Sales Ltd | Professional & scientific | 2026 |
| CCL Develco 12 Limited | Construction | 2021 |
| CCM Commercial Ltd | Real estate | 2023 |
| CDN Wealth Limited | Extraterritorial | 2014 |
| CE Enterprise Limited | Professional & scientific | 2024 |
| Cedar House Consulting Ltd | Professional & scientific | 2025 |
| Cedar House International Limited | Information & communication | 2019 |
| Certico Trading Limited | Information & communication | 2006 |
| CFD Christchurch Limited | Health & social care | 2012 |
| CGS Engineering Ltd | Professional & scientific | 2024 |
| Chalbury Estates Limited | Real estate | 2021 |
| Chang BAI Ltd | Hospitality | 2019 |
| Channel Court Management (Southbourne) Limited | Households | 1959 |
| Charlene Burkmar Consulting Limited | Administrative & support | 2020 |
| Charlie Storrie Pilates Ltd | Administrative & support | 2017 |
| Charter EYE Limited | Transport & logistics | 2022 |
| Chauffeur Executive Services Ltd | Transport & logistics | 2024 |
| Cheeky FOX Churros Ltd | Hospitality | 2024 |
| Cheffys Ltd | Manufacturing | 2025 |
| Chelsea Court (Verwood) Company Limited | Households | 2002 |
| Chemca Ltd | Wholesale & retail | 2016 |
| Cherry Mews Management Company Limited | Households | 2014 |
| Chewton Business Associates Limited | Education | 2022 |
| Chewton DEN Ltd | Hospitality | 2020 |
| Chewton Park Estate Limited | Real estate | 1988 |
| Chewton Way Management Company (Christchurch) Limited | Households | 2014 |
| Chezgar Ltd | Other services | 2021 |
| Chhabila News Limited | Wholesale & retail | 2025 |
| Chhabila Properties Limited | Real estate | 2024 |
| Chhabila Stores Limited | Wholesale & retail | 2025 |
| Chichester Harbour Hotel Limited | Hospitality | 2015 |
| Chili OIL Ltd | Hospitality | 2023 |
| Chill Therapy Bournemouth CIC | Health & social care | 2021 |
| Chilli Pepper Print Limited | Manufacturing | 2020 |
| Chillin Trailers Limited | Hospitality | 2024 |
| Chimney Chaps Ltd | Administrative & support | 2025 |
| Chimpit Estates Ltd | Real estate | 2023 |
| China LEE Limited | Hospitality | 2014 |
| Chinatown Highcliffe Ltd | Hospitality | 2026 |
| CHN Consulting Limited | Education | 2018 |
| Chop Enterprises Limited | Financial services | 2025 |
| Chorus Accountancy Limited | Extraterritorial | 2012 |
| Chorus Accounting Limited | Professional & scientific | 2012 |
| Chorus Bookkeeping Limited | Extraterritorial | 2016 |
| Chris Gaussen Master Thatcher Ltd | Construction | 2025 |
| Chris Holdsworth Design Ltd. | Information & communication | 2016 |
| Christchurch Accountancy Services Ltd | Professional & scientific | 2014 |
| Christchurch Accounting Ltd | Professional & scientific | 2018 |
| Christchurch Activities for Young People Community Interest Company | Arts & recreation | 2011 |
| Christchurch Baptist Church Development Company Ltd | Construction | 2023 |
| Christchurch Bathrooms Limited | Wholesale & retail | 2014 |
| Christchurch BID Ltd | Other services | 2019 |
| Christchurch Blinds Limited | Manufacturing | 2003 |
| Christchurch Boat Club Ltd | Arts & recreation | 2023 |
| Christchurch Bodywork Centre Ltd | Wholesale & retail | 2026 |
| Christchurch Bookkeeping Ltd | Professional & scientific | 2015 |
| Christchurch Business Park Management Limited | Real estate | 2010 |
| Christchurch Care (Salisbury) Limited | Health & social care | 2024 |
| Christchurch Care (Winchester) Limited | Health & social care | 2024 |
| Christchurch Care Limited | Administrative & support | 2013 |
| Christchurch Carnival CIC | Arts & recreation | 2023 |
| Christchurch Cars Limited | Wholesale & retail | 2016 |
| Christchurch Chamber of Trade and Commerce Limited | Other services | 2006 |
| Christchurch Charitable Trust | Other services | 1995 |
| Christchurch Chicken Limited | Hospitality | 2020 |
| Christchurch Community Partnership | Health & social care | 2011 |
| Christchurch Construction Ltd | Construction | 2022 |
| Christchurch Derma Spa Limited | Other services | 2020 |
| Christchurch Emporium Shopping Village Ltd | Wholesale & retail | 2025 |
| Christchurch Energy Limited | Energy | 2020 |
| Christchurch Environmental Management Limited | Real estate | 2016 |
| Christchurch Flue Supplies Limited | Manufacturing | 2014 |