| C & C Projects (North) Ltd | Construction | 2018 |
| C & D (Wholesale Meats) Limited | Wholesale & retail | 1982 |
| C & N Recycling Ltd | Water & waste | 2021 |
| C & R Testing Limited | Other services | 2003 |
| C a Picken & SON Limited | Administrative & support | 2010 |
| C and C Projects Building Ltd | Construction | 2023 |
| C B Logistics Solutions Ltd | Transport & logistics | 2026 |
| C B S (Rochdale) Limited | Construction | 2003 |
| C J S Mortgage Solutions Limited | Financial services | 2018 |
| C S Gorton Limited | Administrative & support | 2011 |
| C&J Logistics Ltd | Transport & logistics | 2017 |
| C&L Property Developments Ltd | Real estate | 2025 |
| C.A.M. Building Projects Limited | Construction | 2008 |
| C.A.Moraru Ltd | Transport & logistics | 2025 |
| C.Bizgan Ltd | Transport & logistics | 2025 |
| C.D. Brickwork Limited | Construction | 2006 |
| C.H.O.O.K.S Ltd | Financial services | 2024 |
| C.M.A&C Trans Ltd | Transport & logistics | 2021 |
| C.R. Laurence of Europe, Ltd | Wholesale & retail | 1975 |
| C.R. Laurence UK, Ltd | Professional & scientific | 1999 |
| C13TCE Limited | Other services | 2025 |
| C4 Event Bars Ltd | Hospitality | 2022 |
| C4 Events & Catering Limited | Administrative & support | 2016 |
| CAB Interactive Limited | Information & communication | 2025 |
| Cabbage Patch Pre-School Limited | Education | 2010 |
| Cable Stockists UK Limited | Wholesale & retail | 2025 |
| Caelum Inceptum Ltd | Professional & scientific | 2023 |
| Cafe Arcadian Limited | Hospitality | 2025 |
| Cafe Aylanto Limited | Hospitality | 2019 |
| Cage Ballers Ltd | Hospitality | 2025 |
| Cahill Joinery Ltd | Construction | 2024 |
| Caitlin Louise Limited | Wholesale & retail | 2025 |
| Cake Box Rochdale Ltd | Hospitality | 2018 |
| Cake Castle Limited | Manufacturing | 2022 |
| Cake Hub Ltd | Manufacturing | 2025 |
| Calder Construction Limited | Extraterritorial | 2015 |
| Caldershaw Flora | Arts & recreation | 2022 |
| Caldershaw Ltd | Real estate | 2018 |
| Calderstone Holdings Ltd | Real estate | 2026 |
| Calista Cosmetics UK Ltd | Wholesale & retail | 2020 |
| Call the Company Ltd | Wholesale & retail | 2012 |
| Callaghan Data Consulting Ltd | Information & communication | 2021 |
| Calton Systems Limited | Health & social care | 2010 |
| Cambridge College of Management and Sciences Ltd | Education | 2017 |
| Cameron Steele Limited | Real estate | 2022 |
| Camilk Ltd | Wholesale & retail | 2019 |
| Camy&Mary Ltd | Transport & logistics | 2025 |
| Candyland Food Ltd | Hospitality | 2026 |
| Candyland Fulham Ltd | Hospitality | 2021 |
| Canna Care Ltd | Health & social care | 2021 |
| Cantoni Ltd | Administrative & support | 2025 |
| Capital Carwash Ltd | Wholesale & retail | 2020 |
| Capital Food (Europe) Ltd | Wholesale & retail | 2025 |
| Capitum Connect Ltd | Professional & scientific | 2026 |
| Cappello (UK) Ltd | Administrative & support | 2006 |
| Capra Falconeri International Ltd | Wholesale & retail | 2020 |
| Capta Recruitment Ltd | Administrative & support | 2026 |
| CAPTIV8 IT Ltd | Information & communication | 2015 |
| Car Breakers UK Ltd. | Wholesale & retail | 2018 |
| Car Fort Ltd | Wholesale & retail | 2024 |
| Car Key Place Ltd | Wholesale & retail | 2025 |
| Car Sales Hub Ltd | Wholesale & retail | 2026 |
| Car Secure Bury Limited | Wholesale & retail | 2024 |
| Car Specialist Customs Limited | Wholesale & retail | 2019 |
| Car Video Unit | Information & communication | 2010 |
| Car.I.P. Limited | Water & waste | 2005 |
| Caranav Limited | Information & communication | 2014 |
| Carbon Chem Ltd | Manufacturing | 2025 |
| Carbon Clean Renewables Ltd | Professional & scientific | 2025 |
| Cardea Healthcare MCR Ltd | Administrative & support | 2025 |
| Care 2 Clean 4 U Ltd | Administrative & support | 2023 |
| Care Monitor Ltd | Health & social care | 2020 |
| Care on Time 24 Ltd | Health & social care | 2025 |
| Career Root Recruitment Limited | Administrative & support | 2025 |
| Carers Empire Limited | Extraterritorial | 2009 |
| Carestead Sourcing Ltd | Real estate | 2025 |
| Cargo Car Transport Ltd | Transport & logistics | 2015 |
| Carl Dodman Transport Ltd | Transport & logistics | 2026 |
| Carleaton.Uk Ltd | Wholesale & retail | 2025 |
| Carley Communications Ltd | Administrative & support | 2008 |
| Caroline Blair Limited | Arts & recreation | 2022 |
| Carpet Creations Limited | Wholesale & retail | 2021 |
| Carpet Design (NW) Ltd | Wholesale & retail | 2025 |
| Carpets Rochdale.Co.Uk Ltd | Wholesale & retail | 2017 |
| Carrex Limited | Water & waste | 1989 |
| Carrex Skip Hire Group Limited | Water & waste | 2002 |
| Carrillo Cars Ltd | Wholesale & retail | 2025 |
| Carrington Performance Fabrics Limited | Extraterritorial | 2000 |
| CARS62 Ltd | Wholesale & retail | 2026 |
| Carson Windows Ltd | Manufacturing | 2025 |
| Carter Ceba Limited | Financial services | 2013 |
| Carter Collins & Myer Limited | Professional & scientific | 1997 |
| Carter Collins Myer & Co Limited | Professional & scientific | 2023 |
| Carter Events Limited | Transport & logistics | 2016 |
| Carter Origin Limited | Manufacturing | 1942 |
| Cartero Ltd | Professional & scientific | 2023 |
| Cartier Wealth Ltd | Professional & scientific | 2019 |
| Cartmell Associates Limited | Administrative & support | 2010 |
| Cartmellor Limited | Financial services | 2016 |
| Cartwheel Investments Limited | Real estate | 2016 |