| Castlevale Roofing Ltd | Construction | 2024 |
| Catalyst Services UK Ltd | Financial services | 2014 |
| Cater Safe Limited | Public administration | 2021 |
| Caterfab Limited | Manufacturing | 2005 |
| Catering Systems 2000 Limited | Hospitality | 1986 |
| Catherine Lansfield Limited | Wholesale & retail | 2020 |
| Catillon Limited | Professional & scientific | 2002 |
| Catrique House Ltd | Hospitality | 2026 |
| Catseye Data Ltd | Information & communication | 2022 |
| Caunce Capital Ltd | Real estate | 2025 |
| Cavanagh Estates Ltd | Real estate | 2005 |
| Cavannah Court Management Company Limited | Households | 1990 |
| Cavtat Homes Limited | Real estate | 2026 |
| Cawdron Capital West Limited | Wholesale & retail | 2010 |
| Cayns Ltd | Professional & scientific | 2025 |
| CB Choice Investment Ltd | Financial services | 2022 |
| CB Fire Installation Ltd | Construction | 2021 |
| CB Maintenance Ltd | Construction | 2026 |
| CB Painting Contractors Ltd | Construction | 2024 |
| CB Rail Services Limited | Construction | 2019 |
| CBD Style Ltd. | Information & communication | 2023 |
| Cbgg Stationery Ltd | Wholesale & retail | 2024 |
| CBK Collections Ltd | Wholesale & retail | 2019 |
| Cbpth Ltd | Hospitality | 2024 |
| CBT in Manchester Limited | Health & social care | 2017 |
| CCD Haulage Limited | Transport & logistics | 2019 |
| CCF Nationwide Ltd | Other services | 2025 |
| CCGDRD2 Limited | Hospitality | 2025 |
| CCN Holdings Ltd | Real estate | 2026 |
| CCW Care Ltd | Health & social care | 2010 |
| CD Law Ltd | Professional & scientific | 2021 |
| CE Fitness Ltd | Arts & recreation | 2021 |
| CE Marketing Ltd | Professional & scientific | 2026 |
| Ceased 07 Ltd | Financial services | 1993 |
| CED Property Management Limited | Real estate | 2021 |
| Cedar Green (Gorton) Management Company Limited | Households | 2005 |
| Cedar Landscapes Limited | Other services | 1982 |
| Cedravis Ltd | Information & communication | 2025 |
| CEE Investment Group Ltd. | Financial services | 2022 |
| CEF Flooring Services Ltd | Construction | 2022 |
| Celeste Avenue Limited | Information & communication | 2025 |
| Cellnova Ltd | Wholesale & retail | 2024 |
| Cellucity Ltd | Wholesale & retail | 2024 |
| Cellular Care Limited | Wholesale & retail | 2023 |
| Cellular Ltd | Wholesale & retail | 2022 |
| Cellular Studio Ltd | Wholesale & retail | 2019 |
| Celson Electronics Ltd | Wholesale & retail | 2025 |
| Cender Ltd | Extraterritorial | 2025 |
| Central Market 87 Ltd | Wholesale & retail | 2025 |
| Central MOT Ltd | Wholesale & retail | 2026 |
| Central Pharmacy (Liverpool) Limited | Wholesale & retail | 2007 |
| Central Roofing Services Ltd | Construction | 2021 |
| Centre Bar Ltd | Manufacturing | 2016 |
| Centre of Excellence (UK) Limited | Arts & recreation | 2010 |
| Centre of Wellbeing, Training & Culture Ltd | Education | 2025 |
| Centrix Financial Ltd | Financial services | 2021 |
| Century City Oldham Limited | Hospitality | 2023 |
| Ceramic Seals Ltd. | Manufacturing | 1961 |
| Cerberus Property (Holdings) Ltd | Financial services | 2019 |
| Cerberus Property Consultants Limited | Construction | 2009 |
| Cerebratica AI Limited | Wholesale & retail | 2025 |
| Cerevyn AI Limited | Wholesale & retail | 2025 |
| Cerno Data Solutions Ltd | Information & communication | 2018 |
| Cerro Torre Ltd | Information & communication | 2011 |
| Certified State Limited | Manufacturing | 2017 |
| CES Northern Limited | Administrative & support | 2016 |
| CES Security Ltd | Administrative & support | 2019 |
| CET Investments Limited | Real estate | 2018 |
| Ceward Limited | Wholesale & retail | 2025 |
| Cfab Holdings Limited | Professional & scientific | 2025 |
| Cfab Investments Ltd | Professional & scientific | 2025 |
| Cfctrading Ltd | Other services | 2021 |
| CFH Site Solutions Limited | Professional & scientific | 2025 |
| CFM Offshore Services Ltd | Professional & scientific | 2025 |
| Cgpep Ltd | Real estate | 2025 |
| CGY Group Ltd. | Information & communication | 2023 |
| CGY Private Health Holding Ltd. | Information & communication | 2022 |
| CH Chauffeurs & Airport Service Ltd | Transport & logistics | 2023 |
| CH Grounds & Gardens Ltd | Administrative & support | 2025 |
| CH Holding Limited | Professional & scientific | 2015 |
| CHA CHA Chai Oldham Ltd | Hospitality | 2021 |
| Chacha Jewellers (Oldham) Limited | Wholesale & retail | 2015 |
| Chad Express Limited | Transport & logistics | 2022 |
| Chadderton Autos Ltd | Wholesale & retail | 2015 |
| Chadderton Bar & Grill Limited | Hospitality | 2025 |
| Chadderton Beds and Furniture Ltd | Manufacturing | 2023 |
| Chadderton Building & Repairs Limited | Construction | 2016 |
| Chadderton Care (NW) Ltd | Financial services | 2023 |
| Chadderton Enterprise Ltd | Administrative & support | 2022 |
| Chadderton Football Club (2009) Ltd | Administrative & support | 2009 |
| Chadderton Garden Centre Limited | Wholesale & retail | 2023 |
| Chadderton Hall Properties Limited | Real estate | 2010 |
| Chadderton Healthcare Ltd | Health & social care | 2017 |
| Chadderton Learning Centre Ltd | Education | 2026 |
| Chadderton Motor Company Limited | Wholesale & retail | 2016 |
| Chadderton One Barbers Limited | Other services | 2022 |
| Chadderton Padel Club Ltd | Arts & recreation | 2026 |
| Chadderton Polish and Detailing Ltd | Administrative & support | 2023 |
| Chadderton Service Centre Limited | Wholesale & retail | 2002 |
| Chadderton Together (Foxdenton 2025) Limited | Other services | 2025 |