| Cafe Rustica Limited | Hospitality | 2020 |
| Callaghan Carpentry Ltd | Construction | 2023 |
| Callmy (Messaging) Ltd | Information & communication | 2014 |
| Callmy Ltd | Information & communication | 2014 |
| Callum George Properties Ltd | Real estate | 2025 |
| Camelot Management Properties Limited | Real estate | 2022 |
| Cami's Limited | Wholesale & retail | 2021 |
| Campton Consulting Limited | Professional & scientific | 2021 |
| Canine Valley (Rutland) Limited | Agriculture & fishing | 2025 |
| Canmac Catering Ltd | Wholesale & retail | 2017 |
| Cansenkismet Limited | Hospitality | 2023 |
| Canton Fair UK Limited | Administrative & support | 2008 |
| Captain Jack's Adventure Limited | Arts & recreation | 2008 |
| Cardioat Limited | Extraterritorial | 2021 |
| Cargofix Ltd | Wholesale & retail | 2026 |
| Cargomate Technologies Limited | Information & communication | 2017 |
| Carter Delisle SPV Limited | Real estate | 2022 |
| Carter Oliver Property Experts (Lettings) Limited | Real estate | 2021 |
| Carter Oliver Property Experts Limited | Real estate | 2017 |
| Carter South International Limited | Professional & scientific | 2011 |
| Casa Blanca Properties Limited | Real estate | 2003 |
| Cashel Rock Bloodstock Limited | Wholesale & retail | 2019 |
| Cask Matters Ltd | Administrative & support | 2008 |
| Casper Properties (London) Limited | Real estate | 2021 |
| Castle Thorpe Consulting Limited | Information & communication | 2014 |
| Catered to YOU Ltd | Hospitality | 2023 |
| Catering Live Ltd | Hospitality | 2025 |
| Cath Mclean Advisory Ltd | Professional & scientific | 2024 |
| Cavalier Car Park Ltd | Transport & logistics | 2026 |
| Cbar Global Ltd | Wholesale & retail | 2026 |
| CBK SCI CON Limited | Professional & scientific | 2013 |
| CDI Electrical Ltd | Construction | 2006 |
| Celeris Group Limited | Professional & scientific | 2015 |
| Celltech Communications Limited | Information & communication | 2020 |
| Central Services Unit Limited | Professional & scientific | 2013 |
| Cetona Services Limited | Information & communication | 2016 |
| CH Electrical (Leics) Limited | Construction | 2006 |
| Chadwell Consultants Ltd | Construction | 2020 |
| Chaise Plumbing and Heating Limited | Construction | 2018 |
| Changes Salon Limited | Other services | 2019 |
| Charles Evans Limited | Health & social care | 2016 |
| Charles Timms Ltd | Other services | 2021 |
| Charnwood Fireplace (Holdings) Ltd | Financial services | 2018 |
| Charnwood Joinery Ltd | Construction | 2018 |
| Charyaar Properties Limited | Real estate | 2016 |
| Chase Farms (Gilmorton) Limited | Agriculture & fishing | 2012 |
| Chemical Cleansing UK Limited | Administrative & support | 2019 |
| Chemserve Consultants Limited | Professional & scientific | 2012 |
| Chest Imaging Ltd. | Health & social care | 2012 |
| Chestnut Bulk Bins Ltd | Transport & logistics | 2016 |
| Chris NYE Ltd | Transport & logistics | 2009 |
| Chris O'Neill Limited | Transport & logistics | 2004 |
| Chross Lighting Limited | Construction | 2018 |
| Cimworks UK Limited | Information & communication | 2005 |
| Cinivo Ltd | Professional & scientific | 2024 |
| City of London Taverners Limited | Wholesale & retail | 2005 |
| CKC Medical Ltd | Health & social care | 2021 |
| Clarendon Sports Ltd | Professional & scientific | 2016 |
| Clarity Midlands Limited | Construction | 2018 |
| Clarity Property Beta Limited | Real estate | 2018 |
| Clarity Property Gamma Limited | Construction | 2021 |
| Clarity Property Income Limited | Real estate | 2025 |
| Clarity Property Limited | Construction | 2017 |
| Clarke Properties Limited | Real estate | 1997 |
| Clarke Property Management (Lutterworth) Ltd | Real estate | 2022 |
| Clarkes Vehicle Service Ltd | Wholesale & retail | 2011 |
| Classic Films Direct Limited | Wholesale & retail | 2015 |
| Claybrooke Animal Feeds Limited | Wholesale & retail | 2005 |
| Claybrooke Orchard Ltd | Professional & scientific | 2011 |
| CLC Catering Limited | Hospitality | 2018 |
| Clean and Tidy Domestic and Professional Cleaning Ltd | Administrative & support | 2025 |
| Clear Choice Home Improvements Limited | Other services | 2004 |
| Clear Scope Management Limited | Professional & scientific | 2017 |
| Cleaver Accounting Limited | Professional & scientific | 2011 |
| Clever AS Paint Limited | Information & communication | 1997 |
| Cliff View Ltd | Real estate | 2017 |
| Clingz Grip Socks Ltd | Manufacturing | 2020 |
| Clingz Ltd | Manufacturing | 2020 |
| CLM Tyres & Brakes Limited | Wholesale & retail | 2024 |
| Close Point Ltd | Real estate | 2024 |
| CNC 2000 Midlands Limited | Manufacturing | 2004 |
| CNC Routing Solutions Ltd | Manufacturing | 2012 |
| Coalville Town Football Club Ltd | Arts & recreation | 2014 |
| Cobetts Limited | Health & social care | 2020 |
| Codi Consulting Group Limited | Professional & scientific | 2025 |
| Colourful Soles Ltd | Wholesale & retail | 2019 |
| COM Klean Ltd | Administrative & support | 2023 |
| Combifix Service & Repairs Ltd | Other services | 2014 |
| Commerce Authentique Ltd | Professional & scientific | 2026 |
| Compass Civil Engineering Ltd | Construction | 2015 |
| Compass Construction Supplies Ltd | Wholesale & retail | 2020 |
| Compass Rehabilitation Ltd | Other services | 2020 |
| Competition Showroom Ltd | Information & communication | 2026 |
| Complete Car Care Leicestershire Ltd | Wholesale & retail | 2024 |
| Concept 66 Ltd | Manufacturing | 2004 |
| Concorso Restorations Ltd | Professional & scientific | 2023 |
| Concrete Flooring Consultants Ltd | Construction | 2025 |
| Conduit Fencing Limited | Construction | 2016 |
| Conmodum Limited | Financial services | 2021 |
| Conservatory Roof Systems Midlands Ltd | Construction | 2016 |