| Click Send Money Ltd | Financial services | 2026 |
| Click Street Ltd | Wholesale & retail | 2021 |
| Click to Buy Store Limited | Wholesale & retail | 2022 |
| Click Transit Ltd | Transport & logistics | 2019 |
| Click&Switch Ltd | Construction | 2024 |
| CLICK2SAVEUK Ltd | Wholesale & retail | 2017 |
| CLICK4MOBILES Ltd | Wholesale & retail | 2022 |
| Clickbuy Group Ltd | Wholesale & retail | 2017 |
| Clickcart Limited | Wholesale & retail | 2024 |
| Clickcartel Limited | Wholesale & retail | 2024 |
| Clickcartel Online Ltd | Wholesale & retail | 2024 |
| Clickemporium Limited | Wholesale & retail | 2025 |
| Clickkart Limited | Wholesale & retail | 2025 |
| Clickpay Solutions Ltd | Administrative & support | 2023 |
| Clickshop Birmingham Ltd | Wholesale & retail | 2017 |
| Clickshopuk Ltd | Wholesale & retail | 2018 |
| Clickshow Ltd | Information & communication | 2015 |
| Clients Capital Limited | Administrative & support | 2026 |
| Clientz Contrax Limited | Information & communication | 2015 |
| Clienzo Ltd | Professional & scientific | 2026 |
| Cliff Naturals Limited | Wholesale & retail | 2025 |
| Cliff Smiles Ltd | Health & social care | 2018 |
| Cliff Vision Estates Ltd. | Administrative & support | 2018 |
| Cliff Vision Limited | Health & social care | 2010 |
| Clifford Property Services Ltd | Construction | 2017 |
| Clifton Cleaning Services Limited | Administrative & support | 2004 |
| Clifton Halal Meat Ltd | Wholesale & retail | 2025 |
| Clifton House (Midlands) Limited | Health & social care | 2022 |
| Clifton Housing Limited | Hospitality | 2007 |
| Clifton Housing Project Limited | Health & social care | 2008 |
| Clifton WOK Limited | Hospitality | 2021 |
| Clik Creations Ltd | Administrative & support | 2010 |
| Clik Digitize Ltd | Information & communication | 2023 |
| Clik Holdings Limited | Financial services | 2018 |
| Clik Limited | Information & communication | 2000 |
| Clik Software Limited | Extraterritorial | 2013 |
| Clima-Tech Holding Limited | Administrative & support | 2012 |
| Climacool Air Conditioning Limited | Energy | 2020 |
| Climanet Limited | Administrative & support | 2024 |
| Climange Ltd | Manufacturing | 2024 |
| Climaparts Limited | Wholesale & retail | 2026 |
| Climate Action Exchange Ltd | Health & social care | 2019 |
| Climate Controllers Limited | Wholesale & retail | 2019 |
| Climatize Windows Ltd | Manufacturing | 2022 |
| Climbertech Ltd | Wholesale & retail | 2025 |
| Climbing High C.I.C. | Arts & recreation | 2012 |
| Clinacare Ltd | Health & social care | 2026 |
| Clinevo Holdings Limited | Health & social care | 2021 |
| Clinevo Limited | Health & social care | 2017 |
| Clinic Clean Ltd | Administrative & support | 2025 |
| Clinic for Sight Ltd | Health & social care | 2016 |
| CLINIC28 Ltd | Professional & scientific | 2019 |
| Clinical Academy Ltd | Education | 2025 |
| Clinical Care Academy Ltd | Education | 2025 |
| Clinical Distribution Ltd | Wholesale & retail | 2025 |
| Clinical Futures Academy Limited | Information & communication | 2025 |
| Clinical Locums Limited | Health & social care | 2014 |
| Clinical Physiology Services Ltd | Professional & scientific | 2025 |
| Clinical Prescribing Services Consulting Limited | Health & social care | 2021 |
| Clinical Prescribing Services Limited | Health & social care | 2019 |
| Clinical Psychology Enterprise Limited | Health & social care | 2015 |
| Clinical Psychology Expertise Limited | Health & social care | 2015 |
| Clinicly Ltd | Health & social care | 2025 |
| Clinicsuk Ltd | Health & social care | 2025 |
| Cliniqly Ltd | Education | 2026 |
| Clinisys Europe Limited | Financial services | 2008 |
| Clinisys Information Systems (Europe) Limited | Information & communication | 1995 |
| Clinisys Information Systems (International) Limited | Financial services | 1992 |
| Clinitalk Ltd | Information & communication | 2022 |
| Clinovations Limited | Professional & scientific | 2016 |
| Clinovia Care Limited | Health & social care | 2025 |
| Clinpharm Care Ltd | Wholesale & retail | 2011 |
| Clinpharm Health Limited | Wholesale & retail | 2009 |
| Clinpharm Healthcare Ltd | Wholesale & retail | 2007 |
| Clinpharm Investments Ltd | Real estate | 2024 |
| Clinpharm Plus Ltd | Wholesale & retail | 2010 |
| Clinstead Ltd | Information & communication | 2026 |
| Cliova Ltd | Wholesale & retail | 2025 |
| Clipbot Limited | Information & communication | 2026 |
| Clipforce Ltd | Manufacturing | 2026 |
| Clipper Services Limited | Information & communication | 1983 |
| Clipperz Ltd | Wholesale & retail | 2023 |
| Clique CLO Ltd | Wholesale & retail | 2025 |
| Clique E Shop Ltd | Wholesale & retail | 2025 |
| Cliropa Limited | Information & communication | 2022 |
| Clita & Sons Supplies & Consultancy Limited | Financial services | 2012 |
| Clive Automotive Ltd | Information & communication | 2024 |
| Clive Estates Limited | Real estate | 2026 |
| Clive Henry Group Limited | Financial services | 2022 |
| Clive Holdings Ltd | Financial services | 2024 |
| Clive Neely Limited | Transport & logistics | 1993 |
| Clive Neely Transport Limited | Professional & scientific | 1995 |
| Clive Reeves Public Relations Ltd | Professional & scientific | 2009 |
| Cliveden Housing Management and Care Ltd | Administrative & support | 2021 |
| Cliveden Services Limited | Professional & scientific | 2024 |
| Cliveland Developments Limited | Construction | 2022 |
| Cliveland One Limited | Professional & scientific | 2024 |
| Cliveland Street (Birmingham) Limited | Construction | 2017 |
| Clivexer Ltd | Transport & logistics | 2022 |
| CLJ Global Services Ltd | Other services | 2013 |