| Crisp Construction Ltd | Real estate | 2019 |
| Crisp Interiors Limited | Construction | 2012 |
| Crockstead Farm Hotel Limited | Extraterritorial | 2010 |
| Crosshands Consulting Limited | Professional & scientific | 2025 |
| Crosskey Avenue Ltd | Other services | 2020 |
| Crossnova Trading Ltd | Wholesale & retail | 2025 |
| Crossover Partner Group Ltd. | Administrative & support | 2025 |
| Crown Mansions Limited | Real estate | 2011 |
| Crown Property Holdings Ltd | Real estate | 2018 |
| Crown Suites Ltd | Real estate | 2018 |
| Crownfield Property Limited | Real estate | 2026 |
| Crowns Gym Ltd | Arts & recreation | 2024 |
| Croydon Property Deals Ltd | Real estate | 2018 |
| Croz Rigging Ltd | Construction | 2019 |
| Cruxludi Ltd. | Professional & scientific | 2015 |
| Crypto Investment Options Ltd | Financial services | 2024 |
| Crystal Industrial Co., Ltd. | Extraterritorial | 2014 |
| CS Contracts Ltd | Construction | 2024 |
| CS Metaverse Consulting Ltd. | Professional & scientific | 2022 |
| CS Shipping Technical Consultant Co., Limited | Manufacturing | 2025 |
| Csbuilding Ltd | Construction | 2019 |
| CSC Machinery Co., Ltd | Wholesale & retail | 2023 |
| Csmo Limited | Real estate | 2023 |
| CTC Industries Co., Ltd. | Wholesale & retail | 2015 |
| Ctoi Investments Limited | Financial services | 2021 |
| Ctsignage Technology Co., Ltd | Extraterritorial | 2014 |
| Ctve-Cambridge Talent Vision Education Ltd | Extraterritorial | 2016 |
| Ctypromos Co., Limited | Extraterritorial | 2018 |
| Cubed CBD Ltd | Wholesale & retail | 2020 |
| Cuepura International Limited | Wholesale & retail | 2024 |
| Cuixian Industry Co., Ltd | Manufacturing | 2023 |
| Culverden Limited | Wholesale & retail | 2004 |
| Cumbria International Trading Co., Ltd | Wholesale & retail | 2022 |
| Cumin Limited | Hospitality | 2024 |
| Cummins Bearing Limited | Extraterritorial | 2020 |
| Curated Project Ltd | Construction | 2019 |
| Cure Property Management Limited | Administrative & support | 2018 |
| CURE8 Life Science Ltd | Administrative & support | 2025 |
| Curry Planet Limited | Hospitality | 2019 |
| CUT and Restore Ltd | Other services | 2025 |
| Cutebaby Paper Industry Co., Ltd. | Extraterritorial | 2018 |
| Cutoutil Hardware Tools Co., Ltd | Extraterritorial | 2018 |
| Cvnk Property Developments Limited | Other services | 2015 |
| Cvqs Ltd | Construction | 2019 |
| CW Leadership Limited | Professional & scientific | 2024 |
| CX Chem International Trade Co., Ltd | Manufacturing | 2023 |
| CX International Trade Co., Ltd | Manufacturing | 2020 |
| Cxcc Consultants Limited | Professional & scientific | 2020 |
| CXT Industrial Co., Ltd | Extraterritorial | 2014 |
| CYB Ding Ltd | Wholesale & retail | 2021 |
| Cyber Edge Limited | Information & communication | 2016 |
| Cyberknight Interactive Ltd. | Wholesale & retail | 2024 |
| Cyclovia Ltd | Real estate | 2014 |
| Cylvho International Ltd | Extraterritorial | 2016 |
| Cymole Instrument Co., Limited | Manufacturing | 2020 |
| CYP Cleaning Ltd | Wholesale & retail | 2025 |
| Czapaco Limited | Hospitality | 2018 |
| D & D INT. Limited | Health & social care | 2024 |
| D & G Sports Ltd | Education | 2018 |
| D & L Finance Ltd | Real estate | 2022 |
| D & L Wade Associates Ltd | Other services | 2008 |
| D Cosens Home Improvements Limited | Construction | 2025 |
| D Strategy Ltd | Information & communication | 2025 |
| D&H International Co., Ltd | Extraterritorial | 2019 |
| D'Gabriels Limited | Construction | 2017 |
| D.Johnson Consultancy Ltd | Information & communication | 2015 |
| D.P. Building Services Limited | Construction | 1993 |
| D.W. Print Limited | Administrative & support | 2017 |
| D4 LIT Ltd | Information & communication | 2025 |
| D7 OLU Ltd | Financial services | 2026 |
| DA Blue Whale Co., Ltd | Extraterritorial | 2024 |
| DA Sheng Pacific Limited | Manufacturing | 2023 |
| DA7 Ltd | Transport & logistics | 2026 |
| Dacehurst Partners Limited | Administrative & support | 2026 |
| Dadaguai Limited | Wholesale & retail | 2026 |
| Dadi Trading Co., Ltd | Manufacturing | 2024 |
| Dagi Portfolio Limited | Real estate | 2020 |
| Daisy Chain Childcare Recruitment Limited | Administrative & support | 2015 |
| Daisy Grey Ltd | Hospitality | 2025 |
| Dajia International Co Ltd | Extraterritorial | 2013 |
| Daken PFP (U.K.) Limited | Administrative & support | 2024 |
| Dale Import and Export Co., Ltd | Manufacturing | 2024 |
| Dali International Trading Co., Ltd | Extraterritorial | 2018 |
| Dalian Dahong Art. Co., Ltd | Extraterritorial | 2020 |
| Dalian Double WIN Shipping Service Co., Ltd | Wholesale & retail | 2023 |
| Dalian Shisen Wood Products Co., Ltd | Manufacturing | 2024 |
| Dalian Shusheng Import & Export Co., Ltd | Extraterritorial | 2015 |
| Dalian Well Ocean International Shipping Agency Co., Ltd | Manufacturing | 2020 |
| Dalian Xiangshifei International Trade Co., Ltd | Extraterritorial | 2025 |
| Dalian Xuanhao International Trading Co., Ltd | Extraterritorial | 2022 |
| Dalian Zhongjia International Trading Co., Ltd | Extraterritorial | 2023 |
| Dalica Packaging Co., Ltd | Extraterritorial | 2015 |
| Dalmar Birthworks Ltd | Wholesale & retail | 2024 |
| DAM Property Ltd | Real estate | 2017 |
| Damascene Consulting Ltd | Administrative & support | 2015 |
| Damei Education and Travel Limited | Administrative & support | 2023 |
| Daming Lighting Co., Ltd | Professional & scientific | 2014 |
| Damingxing Arts & Crafts Co., Ltd | Extraterritorial | 2024 |
| Damunki Limited | Information & communication | 2006 |
| DAN Whale Copywriter Limited | Professional & scientific | 2023 |