| City of Cars Ltd | Wholesale & retail | 2021 |
| City of Leicester Estates Limited | Real estate | 2016 |
| City OFF License Ltd | Wholesale & retail | 2023 |
| City Pharmacy Limited | Wholesale & retail | 2004 |
| City Pizza Leics Ltd | Hospitality | 2023 |
| City Press Knives (Investments) Limited | Real estate | 2014 |
| City Promotions Limited | Information & communication | 2023 |
| City Properties (Leicester) Ltd | Real estate | 1998 |
| City Recycling and Storage Ltd | Manufacturing | 2023 |
| City Retreat Leicester | Extraterritorial | 2014 |
| City Rewinds & Drives Ltd | Manufacturing | 2000 |
| City Screen Printers (U.K.) Limited | Manufacturing | 1987 |
| City Screen Printers Limited | Professional & scientific | 1985 |
| City Self Drive (Leicester) Limited | Administrative & support | 2003 |
| City Skip Hire Ltd | Water & waste | 2023 |
| City Styles (Leicester) Limited | Manufacturing | 1990 |
| City Styles Hair & Beauty Ltd | Other services | 2022 |
| City Supermarket Leicester Ltd | Wholesale & retail | 2022 |
| City Taxis Leicester Ltd | Transport & logistics | 2019 |
| City Training Solutions Limited | Administrative & support | 2015 |
| City Trustees Limited | Professional & scientific | 1996 |
| City Watch - Leicester Against Crime Limited | Administrative & support | 2005 |
| City Windows Ltd | Manufacturing | 2024 |
| Citybay Holdings Ltd | Financial services | 2021 |
| Citydeliver Transport Limited | Transport & logistics | 2026 |
| Cityheart Investments Limited | Extraterritorial | 2022 |
| Cityrides Leicester Limited | Transport & logistics | 2024 |
| Cityscape Capital Limited | Professional & scientific | 2022 |
| Cityserve Properties Limited | Real estate | 2017 |
| Citywash Ltd | Other services | 2020 |
| Civani Limited | Wholesale & retail | 1997 |
| Civdrill Solutions Limited | Construction | 2025 |
| Civic R Ltd | Wholesale & retail | 2025 |
| Civil and Concrete Yard Services Limited | Construction | 2022 |
| Civil and Structural Ltd | Professional & scientific | 2020 |
| CJ & Sons Limited | Transport & logistics | 2023 |
| CJ Fitness Ltd | Arts & recreation | 2023 |
| CJ LM Services Limited | Information & communication | 2026 |
| CJ Motor Trade Ltd | Wholesale & retail | 2022 |
| CJ Recruitment Solutions Ltd | Administrative & support | 2016 |
| Cjay Haulage Limited | Transport & logistics | 2013 |
| CJB 2021 Limited | Financial services | 2021 |
| CJB Building and Structures Ltd | Construction | 2025 |
| CJB Food Group Ltd | Hospitality | 2018 |
| CJC Commercials Ltd | Wholesale & retail | 2015 |
| CJC Productions Ltd | Arts & recreation | 2006 |
| CJC Transport Solutions Limited | Transport & logistics | 2015 |
| CJG Investments Ltd | Other services | 2020 |
| CJK Bars Ltd | Hospitality | 2025 |
| CJS Advisory Limited | Professional & scientific | 2018 |
| CJS Benefits Ltd | Administrative & support | 2019 |
| CJS Fencing & Landscaping Ltd | Administrative & support | 2025 |
| CJS Group Limited | Professional & scientific | 2018 |
| CJS Marketing Limited | Professional & scientific | 2015 |
| Cjsb Holdings Limited | Real estate | 2018 |
| CJV Trading Ltd | Wholesale & retail | 2022 |
| CK 2025 Limited | Hospitality | 2025 |
| CK Fencing Ltd | Construction | 2021 |
| CK Property Solutions Limited | Professional & scientific | 2009 |
| CK Publishing Ltd | Information & communication | 2022 |
| CK Supplies (UK) Limited | Construction | 2001 |
| Ck&E Ltd | Administrative & support | 2025 |
| CK2 Catering Limited | Hospitality | 2013 |
| CKB Leicester Limited | Construction | 2018 |
| Ckhk Ltd | Real estate | 2025 |
| CKM Nexus Limited | Professional & scientific | 2025 |
| CKN Storage Properties Limited | Real estate | 2021 |
| Ckps Investments Limited | Financial services | 2025 |
| CKR Distributions Ltd | Wholesale & retail | 2025 |
| CKS Facilities Management Ltd | Manufacturing | 2026 |
| CKS Parts Ltd | Wholesale & retail | 2026 |
| CKS Properties Portfolio Ltd | Real estate | 2026 |
| CKS Property Management Ltd | Real estate | 2024 |
| CL 2025 Limited | Wholesale & retail | 1973 |
| CL Education Ltd | Professional & scientific | 2021 |
| CL Properties Midlands Ltd | Real estate | 2025 |
| CL42ITY Ltd | Professional & scientific | 2023 |
| Claddagh Construction Group Ltd | Construction | 2019 |
| Claims Processing Limited | Professional & scientific | 2026 |
| Claimwala Ltd | Professional & scientific | 2025 |
| Claire Gavin Innovations Limited | Professional & scientific | 2023 |
| Claireandmel Ltd | Administrative & support | 2026 |
| Clairvoyant Consulting Services Ltd | Real estate | 2013 |
| Clan Innovations Ltd | Manufacturing | 2012 |
| Claradent Ltd | Health & social care | 2020 |
| Clare Community Company Ltd | Extraterritorial | 2025 |
| Clare Consultancy Ltd | Professional & scientific | 2023 |
| Clare Gilby Consulting Ltd | Information & communication | 2026 |
| Claremont Claxton Ltd | Wholesale & retail | 2025 |
| Claremont North Ltd | Wholesale & retail | 2025 |
| Clarence Developers Ltd | Real estate | 2019 |
| Clarence Property Maintenance Limited | Construction | 2013 |
| Clarenderry Limited | Administrative & support | 2025 |
| Clarendon Carpentry Limited | Construction | 2007 |
| Clarendon Law Consultants Limited | Real estate | 2002 |
| Clarendon Law Holdings Limited | Real estate | 2018 |
| Clarendon Market Limited | Wholesale & retail | 2026 |
| Clarendon Mews Care Limited | Health & social care | 2015 |
| Clarendon Park Accident and Repair Centre Limited | Wholesale & retail | 2006 |
| Clarendon Park Ltd | Administrative & support | 2013 |