| Choona Consultancy Limited | Real estate | 2025 |
| Choose Financial Limited | Financial services | 2021 |
| Chorlton Longevity LAB Ltd | Health & social care | 2026 |
| Chorlton OUT of School Hours Limited | Other services | 1993 |
| Chose Agency Ltd | Transport & logistics | 2018 |
| Choy Hing Village Restaurant Ltd | Hospitality | 2017 |
| Chrimes Limited | Information & communication | 2023 |
| Chris Billows Golf Ltd | Wholesale & retail | 2025 |
| Chris Heywood Limited | Professional & scientific | 2003 |
| Chris Rogerson Consulting Ltd | Information & communication | 2021 |
| Chris Stephen Plastic Surgery Ltd | Health & social care | 2021 |
| Chris Wignall Coding Services Ltd | Information & communication | 2018 |
| Christ Jesus for ALL Nations Church Ltd | Other services | 2025 |
| Christa Care Limited | Health & social care | 2024 |
| Christian J Allen Limited | Administrative & support | 2013 |
| Christina Ross Limited | Wholesale & retail | 2024 |
| Christine Chadwick Consulting Limited | Professional & scientific | 2007 |
| Christine Kenny Nutrition & Fitness Ltd | Health & social care | 2017 |
| Christopher Bracken Ltd | Information & communication | 2015 |
| Christopher DEE LLP | | 2015 |
| Christopher Electrical Consulting Ltd | Professional & scientific | 2024 |
| Christopher Mcghee Property Ltd | Real estate | 2019 |
| Chromacol Limited | Professional & scientific | 1969 |
| Chronicle House Ltd | Households | 2014 |
| Chronicles Medical Consulting Ltd | Wholesale & retail | 2017 |
| Chronos Wealth Ltd | Professional & scientific | 2019 |
| Chrystal Financial Planning Ltd | Financial services | 2024 |
| Chukka Global Commodities Limited | Manufacturing | 2024 |
| Chukker App Limited | Information & communication | 2023 |
| Church Coppice Management Company Limited | Households | 2008 |
| Church Court Limited | Households | 1982 |
| Church Street Antiques Limited | Wholesale & retail | 1996 |
| Churchdesk Limited | Information & communication | 2017 |
| Churchill Enviro Ltd | Water & waste | 2005 |
| Ci&C Consult Limited | Administrative & support | 2015 |
| CIB Investors Ltd | Real estate | 2026 |
| Cimamco Limited | Manufacturing | 2012 |
| Cinerea Ltd | Professional & scientific | 2021 |
| Circle Building Projex Limited | Construction | 2019 |
| Circle Club Social Limited | Information & communication | 2025 |
| Circle Funerals Ltd | Other services | 2021 |
| Circle Grove Limited | Administrative & support | 2003 |
| Circle Square Advisory Limited | Professional & scientific | 2020 |
| Circuit Specialists Europe Limited | Wholesale & retail | 2008 |
| Circular Edge Consulting Ltd | Information & communication | 2026 |
| Cirkit Designs Limited | Professional & scientific | 2020 |
| Citac Africa Limited | Professional & scientific | 2012 |
| Citrus Tech Solutions Limited | Information & communication | 2019 |
| City A.M. Limited | Information & communication | 2023 |
| City Dermatology Ltd | Real estate | 2018 |
| City Grand (UK) Ltd | Real estate | 2020 |
| City Living Interiors Limited | Wholesale & retail | 2016 |
| City Prima Ltd | Real estate | 2024 |
| City Superhost Ltd | Hospitality | 2019 |
| City United Developments Limited | Real estate | 2020 |
| City United Properties Limited | Real estate | 2018 |
| City Wharf Glasgow Limited | Real estate | 2025 |
| City Wharf Glasgow Opco Limited | Real estate | 2025 |
| Citybranch Healthcare Block a Limited | Construction | 2020 |
| Citygarden Property Ltd | Real estate | 2019 |
| Citystruct Ltd | Professional & scientific | 2023 |
| Cityvestor LLP | | 2018 |
| Citywide Manchester Limited | Real estate | 2023 |
| Civex Group (UK) Ltd | Construction | 2019 |
| Civia Health UK Ltd | Professional & scientific | 2025 |
| Civis Holding Company Ltd | Financial services | 2026 |
| Civis London | Real estate | 2025 |
| Civvy 2 Commando Fitness Ltd | Arts & recreation | 2025 |
| CJ Ashley Consultancy Limited | Administrative & support | 2015 |
| CJB Manchester Ltd | Arts & recreation | 2019 |
| CJB Wealth Ltd | Financial services | 2026 |
| CJG Consultancy Ltd | Professional & scientific | 2025 |
| CJJ Associates Ltd | Financial services | 2026 |
| CJW Medical Services Ltd | Health & social care | 2018 |
| Clacton Solar Ltd | Energy | 2022 |
| Claddagh Venture Investment Limited | Wholesale & retail | 2019 |
| Claimtech Ltd | Information & communication | 2021 |
| Claire Chadwick Consulting Limited | Professional & scientific | 2023 |
| Claire-Cut Limited | Professional & scientific | 2022 |
| Clara and Macy Limited | Wholesale & retail | 2014 |
| Clare Rose Limited | Wholesale & retail | 1975 |
| Clare Thomson Limited | Professional & scientific | 2023 |
| Clare Watkins Personal Styling Limited | Other services | 2022 |
| Claremont Lawn Tennis Club (1932) Limited | Arts & recreation | 1932 |
| Clarence Gardens Management Company Limited | Households | 2002 |
| Clarence RD NOM1 Limited | Professional & scientific | 2021 |
| Clarence RD NOM2 Limited | Professional & scientific | 2021 |
| Claret F P H Limited | Financial services | 2012 |
| Clarity Business Consulting Limited | Professional & scientific | 2025 |
| Clarity Financial Wellbeing Ltd | Education | 2026 |
| Clarke Residential Build Ltd | Construction | 2022 |
| Clarke Residential Developments Ltd | Construction | 2019 |
| Classix Recordings Limited | Education | 2003 |
| Clats Limited | Other services | 2016 |
| Claxton Planning and Development Ltd | Professional & scientific | 2024 |
| Clayton Hulme Corporate Limited | Financial services | 2022 |
| Clean Condiments Limited | Manufacturing | 2020 |
| Clean Marine Group Limited | Professional & scientific | 2017 |
| Cleaningwithintention Limited | Administrative & support | 2026 |
| Clear Diamond Consulting Limited | Administrative & support | 2023 |