| CPL Parts Ltd | Wholesale & retail | 2023 |
| CPS Business Services Ltd | Wholesale & retail | 2025 |
| CR Diagnostics Ltd | Real estate | 2025 |
| CR Property Maintenance Limited | Administrative & support | 2015 |
| CR Property Professionals Ltd | Real estate | 2022 |
| CR Transport 2021 Ltd | Transport & logistics | 2021 |
| Cr.St.St. Ltd | Manufacturing | 2024 |
| CRA Authentic Limited | Wholesale & retail | 2023 |
| Cracking Content Ltd | Professional & scientific | 2017 |
| Craft Engineering Ltd Ltd | Construction | 2026 |
| Craftcore Derby Limited | Hospitality | 2022 |
| Crafted Essence Ltd | Wholesale & retail | 2024 |
| Craftfactor Limited | Professional & scientific | 1986 |
| Crafts at Heart Ltd | Wholesale & retail | 2021 |
| Crafty Hospitality Ltd | Hospitality | 2026 |
| Crafty YOU Ltd | Wholesale & retail | 2020 |
| Crago Capital Ltd | Real estate | 2026 |
| Craig Kavanagh Electrical Ltd | Financial services | 2026 |
| Craig Morris Hospitality Services Limited | Other services | 2008 |
| Craiglunie Limited | Financial services | 2024 |
| Crajen Technical & Commissioning Services Ltd | Professional & scientific | 2025 |
| Cranfield Lodge Management Group Limited | Households | 2019 |
| Cranleigh Grange Residents Management Company Limited | Households | 2019 |
| Cranrue Ltd | Professional & scientific | 2026 |
| Craton Properties Ltd | Real estate | 2025 |
| Crave Collection UK Ltd | Wholesale & retail | 2025 |
| Cravings Catering PH Ltd | Hospitality | 2025 |
| Crawley Daily Store Ltd | Wholesale & retail | 2026 |
| Crawley Food Store Ltd | Wholesale & retail | 2026 |
| Crayford Stores Limited | Wholesale & retail | 2005 |
| Crazysail 1951 Ltd | Financial services | 2016 |
| CRC IT Services Ltd | Other services | 2026 |
| Creamies Desserts Limited | Hospitality | 2019 |
| Create Asset Ltd | Real estate | 2018 |
| Create Commercial Finance Ltd | Professional & scientific | 2024 |
| Create Finance Group Limited | Professional & scientific | 2021 |
| Create Finance Limited | Professional & scientific | 2015 |
| Creating Communication Limited | Professional & scientific | 2008 |
| Creating Living Spaces Ltd | Administrative & support | 2021 |
| Creatio Arts Ltd. | Arts & recreation | 2015 |
| Creation Medical and Educational Services Ltd | Professional & scientific | 2023 |
| Creation Property Group Ltd | Real estate | 2025 |
| Creations Skin Care Centre Limited | Other services | 2003 |
| Creative Business Solutions Ltd | Information & communication | 2021 |
| Creative Cube Limited | Wholesale & retail | 2026 |
| Creative Days Nursery Limited | Education | 2015 |
| Creative Kitchen Ideas Ltd. | Transport & logistics | 2006 |
| Creative Office Solutions Ltd | Administrative & support | 2007 |
| Creative Streaks Limited | Arts & recreation | 2011 |
| Creative Wealth Solutions Limited | Financial services | 2005 |
| Creativeland Household Co Ltd | Wholesale & retail | 2025 |
| Creatives-Syncedarts Ltd | Arts & recreation | 2026 |
| Creatx Software Limited | Information & communication | 2025 |
| Creda Logistics Ltd | Wholesale & retail | 2020 |
| Credit Works (Services) Limited | Professional & scientific | 2008 |
| Creditax Limited | Professional & scientific | 2012 |
| Credo Marketing Ltd | Professional & scientific | 2020 |
| Credop Limited | Information & communication | 2025 |
| Creedence Campers Limited | Wholesale & retail | 2021 |
| Creme Shardlow Limited | Other services | 2015 |
| Crescendo Fireworks Limited | Arts & recreation | 2000 |
| Crescendo Property Holdings Limited | Financial services | 2024 |
| Crescendo Property Investments Limited | Real estate | 2020 |
| Crescent Bite Ltd | Hospitality | 2018 |
| Crescent Consultants Limited | Professional & scientific | 1982 |
| Crescere Services Limited | Information & communication | 2025 |
| Crest Construction Services Ltd | Construction | 2024 |
| Crest Partners Ltd | Wholesale & retail | 2025 |
| Crestline Commerce Ltd | Wholesale & retail | 2025 |
| Crestova Group Ltd | Construction | 2026 |
| Crestview Strategic Consulting Ltd | Information & communication | 2025 |
| Crete Escapes Limited | Administrative & support | 2004 |
| Crewgale Contracts Limited | Construction | 2015 |
| Crewton Group Ltd | Financial services | 2024 |
| CRH Renewables Limited | Energy | 2024 |
| Cricketers Cafe Derby Ltd | Hospitality | 2025 |
| Crime Guard K9 Security Ltd | Administrative & support | 2018 |
| Crimson (Eco) Ltd | Agriculture & fishing | 2021 |
| Crisp Infrastructure Contract Services Ltd. | Professional & scientific | 2016 |
| Cristal Healthcare Services Ltd | Health & social care | 2021 |
| Critical Quarterly Limited | Information & communication | 1997 |
| CRJ Couriers Limited | Transport & logistics | 2021 |
| CRJ Property Ltd | Real estate | 2019 |
| Crjk Limited | Administrative & support | 2021 |
| CRK Maintenance Limited | Financial services | 2021 |
| CRM Code Ltd | Information & communication | 2016 |
| Crockers Manufacturing Limited | Manufacturing | 1979 |
| Crocodile CBD Ltd | Wholesale & retail | 2020 |
| Crocodillo Rail Limited | Transport & logistics | 2018 |
| Croft Printing Limited | Manufacturing | 1993 |
| Croftwright Property Limited | Construction | 2001 |
| Cromford Windows Ltd | Manufacturing | 2023 |
| Crore Limited | Wholesale & retail | 2017 |
| Crosdales Property Investment Ltd | Real estate | 2018 |
| Cross-Bar Properties Limited | Real estate | 2025 |
| Crossborne Ltd | Manufacturing | 2025 |
| Crossley & Davison Engineering Ltd | Professional & scientific | 2024 |
| Crossley & Davison Ltd | Professional & scientific | 2021 |
| Crossroads 247 Co Ltd | Wholesale & retail | 2026 |
| Crosswindrc Ltd | Wholesale & retail | 2026 |