| Burgin Design Ltd | Manufacturing | 2023 |
| Burgin Management Ltd | Professional & scientific | 2011 |
| Burnsall Angling Club Proprietors Limited | Agriculture & fishing | 1966 |
| Burrow & Crowe Accountants & Business Advisers Ltd | Professional & scientific | 2018 |
| Bushsmiths Property Ltd | Real estate | 2021 |
| Business Focus & Systems Limited | Professional & scientific | 2003 |
| Busybee Finance Ltd | Financial services | 2011 |
| Buttercups Playhouse Limited | Other services | 2026 |
| Buttercups Soft Play Ltd | Other services | 2020 |
| Butterfly Rose Ltd | Other services | 2019 |
| BY the Wharfe Ltd | Hospitality | 2018 |
| C&R Choco Heaven by Adina Ltd | Hospitality | 2025 |
| Cailleach Consulting Limited | Wholesale & retail | 2010 |
| Canine Health Ltd | Other services | 2018 |
| Cara Housing Limited | Real estate | 2020 |
| Carnworth (Brough) Limited | Construction | 2024 |
| Carousel Holdco Limited | Arts & recreation | 2026 |
| Casemade Limited | Wholesale & retail | 2016 |
| Castle Bank Electrical Ltd | Construction | 2022 |
| Catherine Parker Solutions Ltd | Health & social care | 2019 |
| CAW & Canter Ltd | Hospitality | 2024 |
| CB Salons Ltd | Other services | 2023 |
| CDR Haulage Limited | Transport & logistics | 2016 |
| CDW Chimney Sweeping Ltd | Administrative & support | 2025 |
| Cemlaw Limited | Real estate | 2017 |
| Centurius Ltd | Information & communication | 2011 |
| CFC Solutions Limited | Administrative & support | 2025 |
| CH Micklethwaite Ltd | Construction | 2026 |
| Champ Property Investments Ltd | Real estate | 2025 |
| Chane Properties Limited | Real estate | 2000 |
| Chapter and Ltd | Information & communication | 2018 |
| Chapter Two Holdings Limited | Financial services | 2024 |
| Charlotte Clemie Weddings Ltd | Professional & scientific | 2022 |
| Charmian Johnson Limited | Professional & scientific | 2025 |
| CHB Medical Reporting Ltd | Health & social care | 2017 |
| Chestnut Surgery Ltd | Health & social care | 2020 |
| Chevin Associates Limited | Information & communication | 2015 |
| Chevin Brew Co Ltd | Manufacturing | 2017 |
| Chevin Corner Limited | Wholesale & retail | 2026 |
| Chevin Cycles Group Limited | Wholesale & retail | 2014 |
| Chevin Cycles Harrogate Limited | Wholesale & retail | 2014 |
| Chevin Developments Limited | Construction | 2025 |
| Chevin Electrical Contractors Ltd | Construction | 2025 |
| Chevin Energy Assessors Ltd | Professional & scientific | 2009 |
| Chevin Hall Management Limited | Households | 2001 |
| Chevin Landscapes Limited | Administrative & support | 2006 |
| Chevin Management Company Ltd | Households | 2021 |
| Chevin Moor Top Management Company Limited | Households | 2021 |
| Chevin Properties Limited | Real estate | 1971 |
| Chevin Service Station Ltd | Wholesale & retail | 2013 |
| CHI Associates Ltd | Real estate | 2020 |
| Chilli Yard Limited | Hospitality | 2015 |
| Choda Property Developments Ltd | Real estate | 2026 |
| Chris Bell Associates Limited | Financial services | 2006 |
| Christopher Little & Co Limited | Professional & scientific | 2021 |
| Churchill Chairs Ltd | Wholesale & retail | 2020 |
| Citi North Ltd | Real estate | 2013 |
| Citi Prop LLP | | 2013 |
| Civil Water Management Limited | Construction | 2019 |
| CL Events 2024 Ltd | Arts & recreation | 2024 |
| Claire Woodhead BSL Interpreting Ltd | Professional & scientific | 2025 |
| Clarke Duckworth Limited | Information & communication | 2013 |
| Classic Car LAB Ltd | Wholesale & retail | 2012 |
| Classic Mood Limited | Real estate | 1997 |
| Classroom Connections Limited | Administrative & support | 2026 |
| Clean Care LAB Limited | Wholesale & retail | 2018 |
| Clear Edge Betting & Gaming Limited | Administrative & support | 2017 |
| Clear Edge Group Holdings Ltd | Administrative & support | 2021 |
| Clear Edge International Search & Selection Ltd | Administrative & support | 2023 |
| Clement Walsh Project Advisory Ltd | Professional & scientific | 2023 |
| Clemie SPV Ltd | Construction | 2024 |
| Clever Energy Holdings Ltd | Financial services | 2019 |
| Cliffdale Leeds Limited | Real estate | 1972 |
| Cliffe House Day Nurseries Limited | Health & social care | 2000 |
| Cliffe House Properties (Yorkshire) Limited | Real estate | 2025 |
| Cliffe House Properties Limited | Real estate | 2018 |
| Clough HEY Ltd | Construction | 2014 |
| Club Energy Fitness Limited | Professional & scientific | 2008 |
| Club Energy Limited | Arts & recreation | 2002 |
| Clulogic Limited | Information & communication | 2019 |
| Cogent Mind Limited | Extraterritorial | 2023 |
| Cognition Neuropsychology Services Ltd | Health & social care | 2023 |
| Collaborative Learning Trust | Education | 2011 |
| Collinson Consulting Limited | Real estate | 2021 |
| Compassionate Cancer Care Limited | Health & social care | 2019 |
| Complete Lifestyle Limited | Other services | 2009 |
| Concourse Computer Services Limited | Information & communication | 1985 |
| Construction Monitoring & Inspections Ltd. | Professional & scientific | 2014 |
| Construction Supplies Group Ltd | Wholesale & retail | 2025 |
| Contented.Ai Limited | Information & communication | 2012 |
| Contract Review Services Ltd | Professional & scientific | 2021 |
| Core Glazing Ltd | Construction | 2023 |
| Core Promotions Ltd | Administrative & support | 2026 |
| Craftsman Holdings Limited | Professional & scientific | 2020 |
| Craftsman Tools Limited | Manufacturing | 1953 |
| Cranbourne Taxation Services Limited | Professional & scientific | 1997 |
| Craven Cruising Club Limited | Other services | 2024 |
| Creed Community Events Ltd | Arts & recreation | 2026 |
| Crescent Property Services (Ilkley) Limited | Construction | 2018 |
| Crescent Software Ltd | Information & communication | 2018 |