| Castles Buildings Limited | Manufacturing | 2003 |
| Castlestone Holdings Limited | Financial services | 2017 |
| Castore Solutions Ltd | Transport & logistics | 2024 |
| Cat Estates Limited | Real estate | 2019 |
| Catplant Quarry Limited | Water & waste | 1999 |
| Cavebus Limited | Education | 2020 |
| Cavendish Court Flats Limited | Real estate | 2017 |
| Cawbuild Ltd | Construction | 2022 |
| Cawthorne Antiques and Collectors Centre Ltd | Wholesale & retail | 2025 |
| Cawthorne Cat Hotel Limited | Other services | 2018 |
| Cawthorne Children's Centre | Education | 2002 |
| Cawthorne Road Day Nursery Limited | Education | 2003 |
| Cawthorne Village Store & Tearoom Ltd | Hospitality | 2013 |
| Caxa Technologies Ltd | Information & communication | 2024 |
| CB Properties (Yorkshire) Ltd | Real estate | 2026 |
| Cbasp UK Limited | Other services | 2024 |
| CBD Healthy Living Ltd | Hospitality | 2019 |
| CBE Couriers Limited | Transport & logistics | 2014 |
| CC HR Consult Limited | Professional & scientific | 2024 |
| CC Renovations Ltd | Wholesale & retail | 2017 |
| Ccanet Limited | Professional & scientific | 2010 |
| CCD Management Limited | Transport & logistics | 2020 |
| Cchiriac Trans Ltd | Transport & logistics | 2018 |
| CCJ Media Limited | Information & communication | 2026 |
| CDA Express Ltd | Transport & logistics | 2025 |
| CDA Motors Barnsley Ltd | Wholesale & retail | 2025 |
| CDB Homes Limited | Real estate | 2022 |
| CDD Consult Ltd | Professional & scientific | 2020 |
| CDX Services Ltd | Construction | 2026 |
| CE JPC Services Limited | Construction | 2023 |
| CE Property Services Limited | Real estate | 2025 |
| CEA Haigh Properties Ltd | Real estate | 2023 |
| Ceag Limited | Manufacturing | 1981 |
| Ceda Chemicals Holdings Limited | Financial services | 2022 |
| Ceda Chemicals Limited | Wholesale & retail | 2001 |
| Celebration Events Group Limited | Hospitality | 2018 |
| CEM Electrical Ltd | Construction | 2021 |
| Central Cafe Barnsley Limited | Hospitality | 2024 |
| Central Garage (Barnsley) Limited | Manufacturing | 2011 |
| Centre Stage Manchester Limited | Administrative & support | 2021 |
| Centrestreet Ltd | Real estate | 2022 |
| Century Cladding Nationwide Ltd | Construction | 2022 |
| CEV Management Ltd | Construction | 2021 |
| CF Installations Ltd | Construction | 2025 |
| Cfgs Media Limited | Information & communication | 2026 |
| CFL Technical Limited | Professional & scientific | 2014 |
| CFT Care Limited | Health & social care | 2014 |
| Cftc Limited | Real estate | 2020 |
| CG Joinery & Building Solutions Limited | Construction | 2018 |
| CGA Electrical Ltd | Construction | 2025 |
| CGM Sports Limited | Wholesale & retail | 2007 |
| CH GDP Limited | Health & social care | 2014 |
| Chad Healey European Ltd | Transport & logistics | 2024 |
| Chadburn Window Installations Limited | Construction | 2018 |
| Chair and Table Hire (Yorkshire) Limited | Administrative & support | 2026 |
| Chakar Grill Ltd | Hospitality | 2026 |
| Challenger S74 Limited | Wholesale & retail | 2017 |
| Challengerchopshop Ltd | Manufacturing | 2026 |
| Chambers Management Services Limited | Administrative & support | 2023 |
| Champagne Shutter Photography Ltd | Professional & scientific | 2023 |
| Change Delivery Ltd | Administrative & support | 2017 |
| Chantelle Transport Limited | Transport & logistics | 2025 |
| Chapel Construction Solutions Limited | Construction | 2025 |
| Chapel Croft Lessees Limited | Households | 2016 |
| Chapel Lane Farm (Yorkshire) Ltd | Agriculture & fishing | 2025 |
| Chapel Mews Management Company Limited | Households | 2005 |
| Chapel Properties (Lancashire) Limited | Real estate | 2020 |
| Chapel Street Vintage Salvage Ltd | Wholesale & retail | 2019 |
| Chapeltown Construction Ltd | Construction | 2014 |
| Chapeltown Family Office Services Ltd | Other services | 2022 |
| Chaplins Cuts Ltd | Other services | 2026 |
| Chapter 8 Solutions Ltd | Other services | 2019 |
| Charles Durrans Tankers Limited | Administrative & support | 2010 |
| Charles Properties (Yorkshire) Limited | Real estate | 2020 |
| Charlesworthy Group Limited | Real estate | 2023 |
| Charlesworthy Limited | Professional & scientific | 2013 |
| Charlesworthy Properties Limited | Real estate | 2022 |
| Charleys Pantry Limited | Hospitality | 2022 |
| Charlie Chaplin Barnsley Ltd | Other services | 2021 |
| Charlie Squared Investments Limited | Real estate | 2024 |
| Charlie's Choice Ltd | Wholesale & retail | 2025 |
| Charltons Furnishings Ltd | Wholesale & retail | 2025 |
| Charltons Properties Limited | Real estate | 2021 |
| Chars Sweet Shop Ltd | Wholesale & retail | 2019 |
| Charter Oaks Limited | Professional & scientific | 2004 |
| Charto Recruitment Ltd | Administrative & support | 2021 |
| Charwill Civils Ltd | Construction | 2019 |
| Chas Braham & Sons (Chapeltown) Limited | Transport & logistics | 1976 |
| Chasing Charlies Limited | Wholesale & retail | 2025 |
| Chasing Classic Cars Limited | Wholesale & retail | 2026 |
| Chasing Classic Cars UK Limited | Wholesale & retail | 2026 |
| Chatterbox Children's Academy Limited | Education | 2015 |
| Chaves BC Ltd | Information & communication | 2026 |
| Chbc Limited | Real estate | 2013 |
| Check Ltd | Professional & scientific | 2025 |
| Chef HUI Kitchen Ltd | Hospitality | 2024 |
| Chelsea Garden Yorkshire Ltd | Administrative & support | 2025 |
| Chelsea Naylor Luxure Aesthetics Ltd | Other services | 2019 |
| Chemlab Ltd | Wholesale & retail | 2009 |
| Chequered Flag (GB) Ltd | Wholesale & retail | 2001 |