| CBT International Ltd | Transport & logistics | 2019 |
| CBW Properties Limited | Real estate | 2021 |
| CC Logistics NW Ltd | Transport & logistics | 2025 |
| CCD Electrical Maintenance Ltd | Construction | 2025 |
| CD Network Limited | Information & communication | 1993 |
| CDL Transportation & Recoveries Ltd | Transport & logistics | 2026 |
| CDM Conservatories Windows & Doors Limited | Construction | 2006 |
| CDM Residential Limited | Real estate | 2010 |
| CE Greenwood Properties Ltd | Real estate | 2026 |
| CE Holiday Lettings Ltd | Real estate | 2024 |
| Cedarpark NW Ltd | Administrative & support | 2024 |
| CEE Coach Limited | Information & communication | 2025 |
| Chadwick's Original Bury Blackpuddings Limited | Manufacturing | 1981 |
| Challengemad Limited | Other services | 2019 |
| Chapman Electrical Services Limited | Construction | 2001 |
| CHARGERS2HOME Ltd | Manufacturing | 2022 |
| Charlesworth Construction Solutions Ltd | Professional & scientific | 2024 |
| Charter House (Burnley) Limited | Real estate | 2010 |
| Cheryl Craig Osteopaths Ltd | Health & social care | 2022 |
| Chicagos Haslingden Ltd | Hospitality | 2019 |
| Chimney Pieces Waterfoot Limited | Wholesale & retail | 2005 |
| Chipwizards Engine Mapping Ltd | Wholesale & retail | 2016 |
| Chloe Pritchard Styling Ltd | Other services | 2026 |
| Chloe Properties Limited | Real estate | 2021 |
| Chris Green Industrial Roofing Limited | Construction | 2004 |
| Chris Walsh Limited | Professional & scientific | 2007 |
| Christina Wang Ltd | Wholesale & retail | 2023 |
| Christine Smith Wellness Coaching Ltd | Wholesale & retail | 2017 |
| Chrysalis Training for Education Ltd | Education | 2025 |
| Chubby Duck Ltd | Hospitality | 2026 |
| Cirrus Furniture Ltd | Manufacturing | 2024 |
| CJS Installs Limited | Construction | 2025 |
| CK Precision Autos Ltd | Manufacturing | 2025 |
| Claret Capital Ltd. | Professional & scientific | 2016 |
| Classic Cars (NW) Limited | Wholesale & retail | 2020 |
| Claxton Hair Limited | Other services | 2015 |
| Clean Inc. Valet and Detail Services Ltd | Administrative & support | 2020 |
| Cleaned Co (NW) Ltd | Health & social care | 2025 |
| Cleanroom Furniture Limited | Manufacturing | 2025 |
| Cleanroom Projects Limited | Manufacturing | 2007 |
| Clearoutcomes and Change Limited | Information & communication | 2014 |
| Click LAB Ltd | Information & communication | 2006 |
| Clickoo Ltd | Professional & scientific | 2009 |
| Climbing Calm CIC | Education | 2019 |
| CLINIC4U Ltd | Health & social care | 2023 |
| Clough Bottom Farm Stables Ltd | Administrative & support | 2019 |
| Clutch & Flywheel Limited | Manufacturing | 2007 |
| CM Refractory Services Limited | Manufacturing | 2010 |
| Co Properties Ltd | Real estate | 2018 |
| Coaching for Safety Limited | Professional & scientific | 2014 |
| Coaching With Izak Ltd | Other services | 2022 |
| Coastal Road Coffee Limited | Hospitality | 2018 |
| Coaty Developments Limited | Real estate | 2011 |
| CODFATHER1 Limited | Hospitality | 2025 |
| Colbre Holdings Limited | Financial services | 2023 |
| Colbre Projects Limited | Construction | 1999 |
| Collier Property & Lettings Ltd | Real estate | 2020 |
| Collis Consulting Ltd | Administrative & support | 2025 |
| Comfylux Limited | Wholesale & retail | 1986 |
| Commercial Fire Systems Ltd | Public administration | 2021 |
| Composite Contracts (UK) Limited | Construction | 2004 |
| Compressor HQ Holdings Ltd | Financial services | 2026 |
| Condale Construction Limited | Construction | 1980 |
| Condale Properties Limited | Professional & scientific | 2007 |
| Connections Taxis Ltd | Transport & logistics | 2019 |
| Conroy Building Ltd | Construction | 2024 |
| Conroy Electrical Ltd | Professional & scientific | 2002 |
| Consultancy Rochdale Ltd | Education | 2025 |
| Control Enforcement Ltd | Other services | 2020 |
| Cooking and Heating Spares Ltd | Wholesale & retail | 2012 |
| Cool Parties & MPL Events Ltd | Arts & recreation | 2025 |
| Coolnuts Limited | Manufacturing | 2024 |
| Coppenwall Limited | Information & communication | 2016 |
| Coppenwall Properties Limited | Real estate | 2026 |
| Cornerbrook Training (UK) Ltd | Construction | 2019 |
| Cornerbrook Training Limited | Professional & scientific | 2017 |
| Corsa Infact Group Ltd | Manufacturing | 2024 |
| Corundum Consulting Ltd | Professional & scientific | 2021 |
| Cosmic Joy Ltd | Wholesale & retail | 2025 |
| Country Garden Services (Manchester) Limited | Administrative & support | 2018 |
| Country Landscapes Limited | Administrative & support | 1999 |
| Courtney Associates Limited | Administrative & support | 1998 |
| CPJ Properties Ltd | Real estate | 2024 |
| Crag Limited | Other services | 2004 |
| Craig & Associates Limited | Financial services | 1998 |
| Craig Investments Limited | Professional & scientific | 2011 |
| Craig Leisure & Hospitality Ltd | Hospitality | 2022 |
| Crawshawbooth Motor Repairs Ltd | Wholesale & retail | 2009 |
| CRB Contracts Limited | Construction | 2020 |
| Creamer Holdings Limited | Financial services | 2020 |
| Creation Signs Ltd | Administrative & support | 2015 |
| Creations With a... Limited | Wholesale & retail | 2020 |
| Creative Candy Limited | Wholesale & retail | 2002 |
| Creative Productions and Events CIC | Education | 2026 |
| Creative Punk Design Ltd | Information & communication | 2024 |
| Creative Spark Limited | Administrative & support | 2008 |
| Crewe One Barbers Limited | Other services | 2019 |
| Cribden END Farm Ltd | Agriculture & fishing | 2020 |
| Croft Developments (NW) Ltd | Construction | 2024 |
| Cronkshaw Fold Farm Ltd | Agriculture & fishing | 2021 |