| Cartech PHD Ltd | Wholesale & retail | 2024 |
| Cartory Limited | Wholesale & retail | 2025 |
| Carwins Limited | Professional & scientific | 2020 |
| CAS Consultancy & Mentoring Group Ltd | Professional & scientific | 2026 |
| CAS Gijrg Trading Limited | Wholesale & retail | 2025 |
| CAS International UK Ltd | Professional & scientific | 2026 |
| Casa Azure Limited | Wholesale & retail | 2025 |
| Casa Luma Ltd | Hospitality | 2025 |
| Case Electro Art Ltd | Wholesale & retail | 2020 |
| Cashin Distributions (U.K.) Limited | Wholesale & retail | 2015 |
| Cashmira Atelier Co., Ltd | Wholesale & retail | 2025 |
| Caspian Wolf Ltd | Hospitality | 2017 |
| Cass Counselling Community Interest Company | Administrative & support | 2017 |
| Cassia Group Ltd | Real estate | 2025 |
| Cassnia Ltd | Extraterritorial | 2026 |
| Castle Critical Communications Ltd | Professional & scientific | 2025 |
| Castle Health & Coaching Ltd | Health & social care | 2023 |
| Caswell Corporation Ltd | Real estate | 2020 |
| Catalyst Collection Limited | Professional & scientific | 2026 |
| Catalyst of Sub-Saharan Africa Community Interest Company | Health & social care | 2025 |
| Category Merchandising Limited | Administrative & support | 2003 |
| Cauldron Sculpture Ltd | Arts & recreation | 2025 |
| Causalis Limited | Information & communication | 1998 |
| Cavannah Connect Ltd | Information & communication | 2026 |
| Caviar Books Limited | Information & communication | 2011 |
| Cavico Aesthetics Ltd | Other services | 2026 |
| Caylum Tech Ltd | Wholesale & retail | 2025 |
| Cayt Limited | Information & communication | 2025 |
| CB Advisory Services Ltd | Professional & scientific | 2026 |
| CB Business Consultancy Services Limited | Professional & scientific | 2024 |
| CB Holdings Ltd | Real estate | 2023 |
| CB Media Studios Limited | Other services | 2026 |
| CB71 Trading Ltd | Wholesale & retail | 2022 |
| CBD KOS Ltd | Wholesale & retail | 2019 |
| CBG X HEM Ventures PTY Ltd | Wholesale & retail | 2025 |
| Cc-Tapis Ltd | Manufacturing | 2021 |
| CCE Tech Co., Ltd. | Administrative & support | 2022 |
| Ccliya Ltd | Wholesale & retail | 2026 |
| Cczc Ltd | Wholesale & retail | 2025 |
| CD Collective Ltd | Wholesale & retail | 2026 |
| Cdnrent Ltd | Wholesale & retail | 2025 |
| CDO SPV 4 Ltd | Real estate | 2026 |
| CDO. Developments Limited | Construction | 2016 |
| CDO. Global Investments Ltd. | Real estate | 2023 |
| CDO. Group Holdings Ltd. | Financial services | 2019 |
| CDO. SPV 1 Ltd | Construction | 2023 |
| CDS Wholesale Limited | Wholesale & retail | 2023 |
| CE UK Holdings Limited | Professional & scientific | 2013 |
| Cecil's Globe Ltd | Administrative & support | 2021 |
| Cecloud Media Ltd | Wholesale & retail | 2026 |
| Cecoo Ltd | Extraterritorial | 2025 |
| Cedar Hereford Limited | Real estate | 2015 |
| Cedar Road Beauty Limited | Other services | 2010 |
| Cedarpath Trading Ltd | Wholesale & retail | 2025 |
| Ceirion H. Dewar Ministries Ltd | Education | 2018 |
| Cel-Services Limited | Information & communication | 2009 |
| Celandine Studio Limited | Wholesale & retail | 2026 |
| Celebrate and SOW Ltd | Agriculture & fishing | 2025 |
| Celecom Technology Company Limited | Wholesale & retail | 2026 |
| Celer Dynamics Ltd | Information & communication | 2021 |
| Celerbuild Ltd | Wholesale & retail | 2024 |
| Celescent Ltd | Information & communication | 2026 |
| Celetz Ltd | Information & communication | 2025 |
| Cellsum Ltd | Wholesale & retail | 2023 |
| Celosia LP | | 2015 |
| CEM Education Ltd | Education | 2026 |
| Cenerata Bulwar Ltd | Wholesale & retail | 2025 |
| Cenio Ltd | Wholesale & retail | 2025 |
| Censto Ltd | Information & communication | 2023 |
| Centenary Films Limited | Information & communication | 2018 |
| Centered Ltd | Wholesale & retail | 2014 |
| Centerlab Technology Ltd | Manufacturing | 2018 |
| Centillion Media Ltd | Wholesale & retail | 2026 |
| Centracab Ltd | Wholesale & retail | 2025 |
| Central Mechanical Solutions Ltd | Construction | 2026 |
| Central Systems Ltd | Administrative & support | 2018 |
| Centre for International Real Estate Professionals Ltd | Education | 2026 |
| Centre for Sustainable Action Limited | Other services | 2021 |
| Cenvor Ltd | Wholesale & retail | 2025 |
| Cepady Ltd | Information & communication | 2025 |
| Cerafire Ltd | Wholesale & retail | 2026 |
| Cerami Games Ltd | Manufacturing | 2025 |
| Cereal and Coffee Ltd | Information & communication | 2025 |
| Cerebral Vortex Players Limited | Arts & recreation | 2023 |
| Ceretania Holding Ltd | Financial services | 2021 |
| Cerritoter Cadillo Ltd | Wholesale & retail | 2025 |
| Certified E S G Association | Water & waste | 2024 |
| Certus Language Services Ltd | Professional & scientific | 2026 |
| Ceryn Limited | Wholesale & retail | 2025 |
| Ceyuan Electronic Technology Co., Ltd | Administrative & support | 2023 |
| Cfei Peak Ltd | Wholesale & retail | 2025 |
| CFY Machinery Co., Ltd | Wholesale & retail | 2024 |
| CGK Limited | Professional & scientific | 2026 |
| Cgqc Limited | Administrative & support | 2018 |
| CH Xinyan Limited | Wholesale & retail | 2025 |
| CH Zlong Limited | Wholesale & retail | 2025 |
| Cha-Ching & Chill Ltd | Education | 2025 |
| Chabgo Ltd | Information & communication | 2016 |
| Chaffcent Ventures Limited | Wholesale & retail | 2025 |
| Chai Xing YAO Ltd | Wholesale & retail | 2025 |