| Centre for Cosmetic Surgery, London Limited | Health & social care | 2022 |
| Centre for Psychology Ltd | Health & social care | 2009 |
| Centre of Development for Disabilities C.I.C. | Health & social care | 2025 |
| Centric Global Solutions Limited | Professional & scientific | 2014 |
| Centricai Limited | Transport & logistics | 2025 |
| Cents Cart Ltd | Wholesale & retail | 2025 |
| Cents Nest Ltd | Wholesale & retail | 2025 |
| Centurion Heating & Plumbing Ltd | Manufacturing | 2018 |
| Centurion Law Limited | Professional & scientific | 2014 |
| Centurion Staunch Edge Ltd | Real estate | 2025 |
| Centurion Staunch Nexus Limited | Administrative & support | 2025 |
| Century 21 Carpentry Ltd | Construction | 2018 |
| Century 21 Constructions Limited | Construction | 2015 |
| Century 21 Holdings Limited | Real estate | 2017 |
| Century 21 Management Limited | Real estate | 2017 |
| Century 21 Properties Limited | Real estate | 2017 |
| Century One Tech Ltd | Wholesale & retail | 2019 |
| Centybollis Ltd | Wholesale & retail | 2025 |
| Ceport Limited | Real estate | 2010 |
| Ceptional Art C.I.C. | Wholesale & retail | 2025 |
| Cereal MUG Games Ltd | Information & communication | 2025 |
| Cernea Electrical Limited | Construction | 2025 |
| Certainty Solution Limited | Information & communication | 2018 |
| Certan Construction Limited | Construction | 2019 |
| Certi Money Limited | Information & communication | 2021 |
| Certified Financial Markets Analyst Ltd | Administrative & support | 2018 |
| Cerva Intl Limited | Wholesale & retail | 2022 |
| Ceylon HUT Ltd | Hospitality | 2023 |
| Ceylon Online Shop Ltd | Wholesale & retail | 2023 |
| Ceynova Prints Ltd | Manufacturing | 2025 |
| CF Cars Limited | Wholesale & retail | 2025 |
| CFE Solutions Limited | Information & communication | 2011 |
| Cffinder Ltd | Wholesale & retail | 2025 |
| CFT B2BLEADS Ltd | Professional & scientific | 2024 |
| CG International Group Ltd | Administrative & support | 2016 |
| CG Utilities Ltd | Construction | 2020 |
| CGM Builders Ltd | Construction | 2023 |
| Cgo.Pmec Limited | Professional & scientific | 2016 |
| CGV Solution Ltd | Transport & logistics | 2024 |
| CH Entertainment Group Ltd | Arts & recreation | 2026 |
| CH Rayyan Traders Ltd | Wholesale & retail | 2023 |
| Ch.Naveed Ltd | Wholesale & retail | 2024 |
| CH40 Ltd | Transport & logistics | 2024 |
| Chaak Electronics Ltd | Information & communication | 2014 |
| Chaat & Grill Ltd | Hospitality | 2025 |
| Chaat N Grill Ltd | Hospitality | 2023 |
| Chaated Ltd | Hospitality | 2025 |
| Chabad Lubavitch Centres North East London and Essex Limited | Other services | 2007 |
| Chachu Limited | Wholesale & retail | 2025 |
| Chadbrou Medical Limited | Health & social care | 2019 |
| Chads Tilbury Limited | Information & communication | 2023 |
| Chadwell Heath "C" Flat Management Limited | Real estate | 1987 |
| Chadwell Homes Ltd | Administrative & support | 2015 |
| Chadwell House Ltd | Real estate | 2024 |
| Chadwell Properties 2 Limited | Real estate | 2026 |
| Chadwell Properties Limited | Real estate | 2023 |
| Chagani Trading Ltd | Wholesale & retail | 2025 |
| Chahal Realty Ltd | Real estate | 2026 |
| Chai Bhais 786 Ltd | Hospitality | 2024 |
| Chai Lads Ltd | Wholesale & retail | 2026 |
| Chai YA Coffee Ltd | Hospitality | 2025 |
| Chai-Doh Limited | Wholesale & retail | 2023 |
| Chaii Adda Limited | Manufacturing | 2026 |
| Chaii Studio Ilford Ltd | Hospitality | 2023 |
| Chainbox Ltd | Administrative & support | 2007 |
| Chainbox Technology (UK) Limited | Administrative & support | 2003 |
| Chainbox Technology Limited | Administrative & support | 1996 |
| Chaitraadhi Private Limited | Transport & logistics | 2026 |
| Chalet Ventures Limited | Real estate | 2025 |
| Chalk Farm Estate Developments Limited | Real estate | 2024 |
| Chalkhill Court Freeholders Limited | Extraterritorial | 2012 |
| Chalkhill Estate Holdings Limited | Financial services | 2021 |
| Challa Law Chambers (UK) Limited | Professional & scientific | 2019 |
| Chamak by H Ltd | Wholesale & retail | 2026 |
| Chamber of Legal Advisors Ltd | Professional & scientific | 2014 |
| Chambers Leadership Coaching Ltd | Education | 2021 |
| Chambers of a Jafar Ltd | Professional & scientific | 2012 |
| Chami Jasmine Limited | Professional & scientific | 2015 |
| Chamkani Security Services Limited | Administrative & support | 2026 |
| Champ IMI Limited | Manufacturing | 2019 |
| Champion Music Limited | Extraterritorial | 1999 |
| Champs Sports Bar & Grill Limited | Hospitality | 2014 |
| Champs Trading Ltd | Wholesale & retail | 2024 |
| Chan Tara Holding Ltd | Hospitality | 2025 |
| Chan Tara Ltd | Hospitality | 2025 |
| Chana & Company Limited | Hospitality | 2005 |
| Chana Incorporation Estates Limited | Real estate | 2023 |
| Chana Incorporation Group Limited | Financial services | 2023 |
| Chance Projects UK Limited | Arts & recreation | 2022 |
| Chand Acquisitions Ltd | Real estate | 2017 |
| Chand Capital Investments Limited | Real estate | 2026 |
| Chand Developments Limited | Real estate | 2011 |
| Chand Group Holdings Limited | Real estate | 2021 |
| Chand Property Services Ltd | Real estate | 2024 |
| Chand UK Investments Ltd | Real estate | 2007 |
| Chander and Sons Limited | Construction | 2012 |
| Chandini Media Limited | Information & communication | 2016 |
| Chandla Construction Limited | Construction | 2025 |
| Chandni Homes Ltd | Real estate | 2026 |
| Chandni Paan Limited | Wholesale & retail | 2016 |