| Classic Landscapes of Sale Ltd | Administrative & support | 2011 |
| Classic ME Limited | Wholesale & retail | 2023 |
| Classic Notch Limited | Wholesale & retail | 2025 |
| Classic Properties (Manchester) Limited | Real estate | 1996 |
| Classic Real Estate Ltd | Wholesale & retail | 2020 |
| Classical Events Limited | Arts & recreation | 2005 |
| Classics Chicken Ltd | Hospitality | 2019 |
| Classique Fashions Limited | Wholesale & retail | 2013 |
| Classkay Store Ltd | Wholesale & retail | 2025 |
| Classy ANA Ltd | Wholesale & retail | 2024 |
| Classy Comfort Ltd | Households | 2019 |
| Classy Deals World Ltd | Wholesale & retail | 2025 |
| Classy Nails & Beauty Stretford Limited | Other services | 2023 |
| Classy Nails 86 Limited | Other services | 2026 |
| Classyclicks Limited | Wholesale & retail | 2025 |
| Clatterbridge Assets Limited | Real estate | 2020 |
| Claude Consultancy Ltd | Professional & scientific | 2019 |
| Claudecodes Ltd | Information & communication | 2026 |
| Claudia's Manchester Stays Ltd | Hospitality | 2022 |
| Claudia's Stays Ltd | Real estate | 2024 |
| Claudioguerraproducoes Ltd | Wholesale & retail | 2026 |
| Clavem Ltd | Professional & scientific | 2024 |
| Claverie Consulting Ltd | Information & communication | 2021 |
| Clawrity Limited | Professional & scientific | 2025 |
| Clawsdeep Games Ltd | Information & communication | 2025 |
| Clay Bar Studios Limited | Other services | 2025 |
| Clay Bricks Limited | Real estate | 2021 |
| Clay City Ltd | Professional & scientific | 2024 |
| Clay Residential Limited | Real estate | 2018 |
| Clayborne Court RTM Company Limited | Administrative & support | 2012 |
| Clayco Developments Ltd | Construction | 2025 |
| Clayco Holdings Ltd | Other services | 2024 |
| Claydon Care Services Limited | Health & social care | 2022 |
| Claymore Technology Solutions Limited | Information & communication | 2025 |
| Clayson Medico Legal Ltd | Health & social care | 2019 |
| Clayton Conservative Club Company Limited(The) | Real estate | 1898 |
| Clayton Construction Services Limited | Construction | 2015 |
| Clayton Hand Car Wash Ltd | Wholesale & retail | 2026 |
| Clayton Horsnell Limited | Wholesale & retail | 2004 |
| Clayton House Manchester Limited | Real estate | 2019 |
| Clayton Kitchen Ltd | Hospitality | 2024 |
| Clayton Law Limited | Professional & scientific | 2020 |
| Clayton Living Holding Limited | Financial services | 2026 |
| Clayton Living Properties Limited | Real estate | 2026 |
| Clayton Pizza Limited | Hospitality | 2024 |
| Clayton Realty Limited | Real estate | 2006 |
| Clayton Village Barbers Ltd | Other services | 2024 |
| Clazz Europe Limited | Wholesale & retail | 2026 |
| CLB Property Investments Ltd | Real estate | 2026 |
| CLB Training Ltd | Education | 2019 |
| Clbm Ltd | Construction | 2021 |
| Clbsocials Ltd | Other services | 2025 |
| CLC Grounds Maintenance Ltd | Administrative & support | 2009 |
| CLC North Ltd | Real estate | 2020 |
| Clcs Limited | Administrative & support | 2008 |
| CLE Skin Ltd | Health & social care | 2022 |
| Clean & Lean Foods Ltd | Hospitality | 2023 |
| Clean and Fresh Platt Lane Ltd | Other services | 2025 |
| Clean and Shine Property Solutions Limited | Transport & logistics | 2018 |
| Clean and Tidy Crew Ltd | Administrative & support | 2025 |
| Clean BEE Facilities Management Limited | Administrative & support | 2025 |
| Clean Cars Connection Ltd | Wholesale & retail | 2016 |
| Clean Choice Services Ltd | Administrative & support | 2025 |
| Clean City Management UK Ltd | Administrative & support | 2025 |
| Clean Cribs Ltd | Administrative & support | 2025 |
| Clean CUT Barbers MCR Ltd | Other services | 2026 |
| Clean CUT Experts Ltd | Extraterritorial | 2026 |
| Clean CUT Home Solutions Ltd | Extraterritorial | 2026 |
| Clean CUT Joinery Ltd | Construction | 2024 |
| Clean Drive Drangowski Ltd | Transport & logistics | 2014 |
| Clean Energies Investor Limited | Administrative & support | 2015 |
| Clean Fresh and Sparkle Ltd | Administrative & support | 2019 |
| Clean Future Consulting Ltd | Administrative & support | 2025 |
| Clean Genesis Limited | Administrative & support | 2023 |
| Clean Genie Manchester Limited | Other services | 2014 |
| Clean Globe UK Co. Ltd | Professional & scientific | 2025 |
| Clean Green Energy Limited | Administrative & support | 2020 |
| Clean Landscapes Limited | Administrative & support | 2021 |
| Clean Manchester Ltd | Administrative & support | 2025 |
| Clean Ounces Ltd | Wholesale & retail | 2023 |
| Clean Possession Wash Ltd | Wholesale & retail | 2025 |
| Clean Seal Ltd | Information & communication | 2017 |
| Clean Slate Team Ltd | Extraterritorial | 2026 |
| Clean Stream Solutions Ltd | Construction | 2025 |
| Clean Sweep MCR Limited | Administrative & support | 2024 |
| Clean UP 4 U Ltd | Administrative & support | 2026 |
| Clean WH33LS Ltd | Administrative & support | 2025 |
| CLEAN-ECO365 Ltd | Professional & scientific | 2024 |
| Cleanbright Services Limited | Administrative & support | 1982 |
| Cleancoat Contractors Ltd | Construction | 2025 |
| Cleanedge Ltd | Administrative & support | 2024 |
| Cleanedge Tech Co., Ltd | Wholesale & retail | 2025 |
| CLEANENERGY365 Ltd | Construction | 2020 |
| Cleaneo Limited | Administrative & support | 2024 |
| Cleaner in Manchester 0161 Ltd | Administrative & support | 2025 |
| Cleanfix Contract Services Ltd | Administrative & support | 2025 |
| Cleanflash Ltd | Administrative & support | 2025 |
| Cleanhive Ltd | Administrative & support | 2024 |
| Cleanical Eco Gleam Ltd | Administrative & support | 2025 |
| Cleaniche Limited | Wholesale & retail | 2023 |