| Cephei Holding Ltd | Financial services | 2025 |
| Cepjay Accounting Services Limited | Professional & scientific | 2018 |
| CER High Holborn Limited | Real estate | 2019 |
| CER Horsell Road Operating Limited | Real estate | 2016 |
| CER Kings Road Limited | Real estate | 2017 |
| CER Liverpool Street Operating Limited | Real estate | 2018 |
| CER Long Lane Limited | Real estate | 2017 |
| CER Net.Works HKL Management Limited | Administrative & support | 2017 |
| CER Net.Works Management Limited | Administrative & support | 2016 |
| Cera Technology Limited | Professional & scientific | 2017 |
| Cerberus Martial Arts Ltd | Arts & recreation | 2022 |
| Cerebrus Solutions Limited | Information & communication | 2001 |
| Cerisport Limited | Extraterritorial | 2021 |
| Cerium Consulting Limited | Information & communication | 2020 |
| Certa Health Limited | Wholesale & retail | 2018 |
| Certa Life Limited | Wholesale & retail | 2012 |
| Cerulean Analytics Ltd | Professional & scientific | 2018 |
| Cerulean Strategies Limited | Professional & scientific | 2025 |
| Cetis (EA) Limited | Information & communication | 2009 |
| Ceylon Cafe Ltd | Hospitality | 2024 |
| Cezar Manda Ltd | Transport & logistics | 2019 |
| CF Visionary Ltd | Information & communication | 2025 |
| CFF South Ltd | Construction | 2022 |
| CFI8 Ltd | Transport & logistics | 2026 |
| CFO Connect Ltd | Professional & scientific | 2023 |
| CFS Industry Ltd | Construction | 2023 |
| CFS Trustees Limited | Financial services | 2021 |
| Cfssash Ltd | Real estate | 2024 |
| CG Outlet Ltd | Wholesale & retail | 2024 |
| CG Partnership Limited | Health & social care | 2022 |
| CG Professional Services Ltd | Construction | 2021 |
| Cghi Ltd | Construction | 2023 |
| Cgmk Properties Ltd | Real estate | 2020 |
| CGO Solution Limited | Professional & scientific | 2018 |
| CGS Electrical Ltd | Manufacturing | 2024 |
| CH Equipment Sales Ltd | Wholesale & retail | 2025 |
| CH Murdoch Consulting Limited | Information & communication | 2025 |
| CH Propertymove Ltd | Real estate | 2026 |
| CH Trailers Ltd | Manufacturing | 2021 |
| CH4 Central Heating Services Limited | Construction | 2004 |
| Chaaming Limited | Real estate | 2017 |
| Chaffron Apartments Ltd | Real estate | 2019 |
| Chaineys Cycles Limited | Wholesale & retail | 1991 |
| Chainview Limited | Other services | 2001 |
| Chairplan Limited | Manufacturing | 1995 |
| Chakra Dancing Limited | Arts & recreation | 2003 |
| Chakrabarti & Mukherji Ltd | Health & social care | 2018 |
| Chalakatech Ltd | Information & communication | 2013 |
| Chalcon Health Care Limited | Health & social care | 2022 |
| Chalk Board Limited | Real estate | 1998 |
| Chalky Whites M.O.T. Test Centre Limited | Wholesale & retail | 1993 |
| Challenge House Limited | Real estate | 2018 |
| Challenge Your Thinking Limited | Education | 2007 |
| Champino Ltd | Hospitality | 2019 |
| Champions Community Research and Development Ltd | Professional & scientific | 2024 |
| Chanan Solutions Ltd | Health & social care | 2022 |
| Chancery Investment Partners Limited | Financial services | 2013 |
| Chander Construction Limited | Construction | 2022 |
| Chandi Group Ltd | Professional & scientific | 2023 |
| Chanesman Global (UK) Limited | Professional & scientific | 2024 |
| Chang BAI KJ Ltd. | Wholesale & retail | 2025 |
| Change Driver Limited | Professional & scientific | 2000 |
| Change Shift Limited | Professional & scientific | 2020 |
| Changes Hairdesign Limited | Other services | 1994 |
| Changing Business Limited | Information & communication | 2005 |
| Channel BID Services Limited | Construction | 2025 |
| Channory Limited | Extraterritorial | 2012 |
| Chapman 1959 Limited | Extraterritorial | 2013 |
| Chapmans in Canterbury Ltd | Hospitality | 2022 |
| Chappell Build Ltd | Construction | 2012 |
| Chaps Electrical Ltd | Professional & scientific | 2023 |
| Chapter - Verse Ltd | Wholesale & retail | 2025 |
| Char TCG Limited | Extraterritorial | 2025 |
| Charcoal Kitchen MK Limited | Hospitality | 2025 |
| Charets Ltd | Real estate | 2020 |
| Chargail Services Limited | Other services | 1998 |
| Chargeurs PCC United Kingdom Limited | Wholesale & retail | 1973 |
| Charice Healthcare Ltd | Health & social care | 2022 |
| Charlbury House Management Company Limited | Households | 2005 |
| Charlcee Safety Ltd | Professional & scientific | 2021 |
| Charles Allen Cars Limited | Wholesale & retail | 2010 |
| Charles Elliot Properties Ltd | Real estate | 2023 |
| Charles Gaskell Homes Ltd | Extraterritorial | 2015 |
| Charles Head Limited | Manufacturing | 1975 |
| Charles Head Trading Ltd | Wholesale & retail | 2025 |
| Charles Jenson Recruitment Ltd | Administrative & support | 2022 |
| Charles Noble Associates Limited | Real estate | 2018 |
| Charles Novacroft Direct Limited | Information & communication | 1998 |
| Charles Oluwapelu Oluwafemi Kome Attah Ltd | Extraterritorial | 2025 |
| Charles Rayner Limited | Other services | 1990 |
| Charles Tucker Consultancy Services Limited | Financial services | 2017 |
| Charlesberry Cattery Limited | Professional & scientific | 2022 |
| Charleston Financial Services Limited | Financial services | 2009 |
| Charleston Property Holdings Limited | Financial services | 2016 |
| Charlie Emerson Coaching Ltd | Health & social care | 2024 |
| Charlie Milner Ltd | Information & communication | 2025 |
| Charlie Security Limited | Administrative & support | 2024 |
| Charlie's Cleaning Ltd | Administrative & support | 2025 |
| Charlotte B Accounting Ltd | Professional & scientific | 2024 |
| Charlotte Jayne Beauty Ltd | Other services | 2018 |