| Caibut Ltd | Financial services | 2015 |
| Campbell ST Belper Ltd | Real estate | 2015 |
| Campo Geotecnico Limited | Professional & scientific | 2025 |
| CANDID8 Recruitment & Consultancy Ltd | Professional & scientific | 2003 |
| Canopy (Derby) Limited | Wholesale & retail | 2003 |
| Cantwell Grove Limited | Administrative & support | 2013 |
| Cantwell Grove Trustees Limited | Extraterritorial | 2016 |
| Capital Asset Management (Midlands) Ltd | Real estate | 2018 |
| Captiair Ltd | Transport & logistics | 2023 |
| Captive Audience Ltd | Arts & recreation | 2017 |
| Car Cult Detailing Ltd | Wholesale & retail | 2023 |
| Caravan Assessment Services Ltd | Financial services | 2018 |
| Carbon Concepts Limited | Manufacturing | 1995 |
| Carl Harrison Electrical Limited | Construction | 2025 |
| Carl Twigg Holdings Ltd | Financial services | 2011 |
| Carl V Taylor Consultants Limited | Professional & scientific | 2011 |
| Carol Taylor Associates Limited | Other services | 2023 |
| Carovan Trading Limited | Administrative & support | 2021 |
| Carta Estates LLP | | 2015 |
| Carta Real Estate (Moorland) Limited | Construction | 2021 |
| Carta Real Estate LLP | | 2016 |
| Carter Consult and Contract Limited | Construction | 2016 |
| Cartfield Group Ltd | Construction | 2015 |
| Cartwrights Paint Spraying Ltd | Construction | 2019 |
| Carvill Limited | Professional & scientific | 2023 |
| Carwise (Derby) Limited | Wholesale & retail | 1994 |
| Casa Rosa Interiors Limited | Construction | 2019 |
| Catacol Limited | Agriculture & fishing | 2003 |
| Caterflow Limited | Administrative & support | 2024 |
| Cavendish MFG Ltd | Financial services | 2018 |
| Cavista Ltd | Health & social care | 2019 |
| CAW Enterprises Ltd | Construction | 2023 |
| CBT Personal Solutions Limited | Health & social care | 2016 |
| CDM Landscapes Ltd | Administrative & support | 2015 |
| Cedar 1955 Limited | Extraterritorial | 2013 |
| Cedar House (Infinity Park) Limited | Construction | 2014 |
| Cellar Door Developments Limited | Real estate | 2023 |
| Cemantiq UK Limited | Information & communication | 2019 |
| Central Health Network Ltd | Health & social care | 2009 |
| Centre Severn Management Company Limited | Households | 2021 |
| Cerebrum Medical Ltd | Health & social care | 2022 |
| Certiero Ltd | Professional & scientific | 2022 |
| Certikit Limited | Information & communication | 2007 |
| Chadfield Health Limited | Health & social care | 2024 |
| Chambers Plastering Ltd | Construction | 2019 |
| Chandhoke Enterprises Limited | Hospitality | 2022 |
| Chaperones & Tutors Ltd | Administrative & support | 2011 |
| Charles Dunning Limited | Health & social care | 2015 |
| Charles Webster Building & Renovation Services Ltd | Construction | 2020 |
| Charter Designs Limited | Professional & scientific | 2000 |
| Chartex Surveys Limited | Professional & scientific | 2016 |
| Chatsworth Education Ltd | Education | 2024 |
| Chekotay Limited | Extraterritorial | 2013 |
| Chesterfield Hotpod Yoga Limited | Arts & recreation | 2023 |
| Chestnut Pizza Ltd | Hospitality | 2025 |
| Cheveux by C. Ltd | Other services | 2023 |
| Chevin Academy CIC | Education | 2025 |
| Chevin Business Solutions Limited | Financial services | 1999 |
| Chevin Computer Systems Limited | Information & communication | 1990 |
| Chevin Holdings Limited | Professional & scientific | 1982 |
| Chevin Investments Limited | Professional & scientific | 2026 |
| Chevin Media Limited | Information & communication | 2025 |
| Chevin Rail Limited | Professional & scientific | 2024 |
| Chevin Systems Limited | Wholesale & retail | 2019 |
| Chevin Valley Housing Limited | Real estate | 2000 |
| Chicory Limited | Real estate | 2010 |
| Chimneycure Limited | Administrative & support | 2017 |
| China Health Preston Limited | Other services | 2021 |
| Chpds Limited | Transport & logistics | 2025 |
| CHR Services Limited | Agriculture & fishing | 2009 |
| Christine Griffin Limited | Financial services | 2003 |
| Christopher Antony Associates Limited | Administrative & support | 2005 |
| Chrysalis Partners East Midlands Limited | Administrative & support | 2022 |
| Chunky Chops Limited | Manufacturing | 2013 |
| Cinammon Ecommerce Ltd | Wholesale & retail | 2013 |
| Circus Leisure Limited | Arts & recreation | 2023 |
| CKC EP Services Limited | Education | 2025 |
| Claire's School Solutions Limited | Education | 2015 |
| Clara Emanuel Properties Ltd | Real estate | 2019 |
| Clarity High Reach Services Ltd | Administrative & support | 2023 |
| Classic Carpets & Flooring (Belper) Limited | Wholesale & retail | 2011 |
| Classic Cask Alehouse Limited | Hospitality | 2017 |
| Classic Cask Limited | Wholesale & retail | 2019 |
| Claudi and FIN Limited | Manufacturing | 2012 |
| Clear Financial Solutions (Midlands) Ltd | Financial services | 2009 |
| Clear FS Holdings Limited | Financial services | 2025 |
| Clearpath Consulting Ltd | Professional & scientific | 2026 |
| Clearwater MS Ltd | Manufacturing | 2015 |
| Clifmere 2003 Limited | Administrative & support | 2003 |
| Clip 'EM and Fell 'EM Ltd | Administrative & support | 2011 |
| CLO 100 Limited | Administrative & support | 2022 |
| Close Joinery Building Services Ltd | Construction | 2021 |
| Cloudmax Solutions Limited | Information & communication | 2018 |
| CLT Consulting & Advisory Limited | Professional & scientific | 2019 |
| CM Properties (Duffield) Limited | Real estate | 2024 |
| CNN Fire Ltd | Construction | 2025 |
| Coach Hannah Ltd | Other services | 2026 |
| Coast to Coast Motorcycles Limited | Other services | 2019 |
| Coco Italiano Limited | Wholesale & retail | 2020 |
| Cocoa Cafe Ltd | Hospitality | 2026 |