| Crunch & Tally Ltd | Professional & scientific | 2025 |
| Cruz & Crew Pet Supplies Ltd | Wholesale & retail | 2024 |
| Crypto Future Ltd | Financial services | 2021 |
| Crypto OWL Limited | Information & communication | 2025 |
| Crystal Clear Window Cleaning Ltd | Water & waste | 2015 |
| Crystal Services Limited | Transport & logistics | 2024 |
| CS Cleaning Services (UK) Limited | Administrative & support | 2008 |
| CSM Engineering Ltd | Construction | 2022 |
| CSM Pressings Limited | Manufacturing | 2004 |
| Csolutionsuk Ltd | Construction | 2025 |
| CSR Group LLP | | 2022 |
| Cstm Creative Limited | Manufacturing | 2025 |
| CT Fire Door Solutions Ltd | Public administration | 2025 |
| CTS Investments Worcester Limited | Wholesale & retail | 2015 |
| CTS Landscapes Limited | Administrative & support | 2024 |
| CTS Worcester Limited | Wholesale & retail | 2015 |
| CTV Trans Ltd | Transport & logistics | 2020 |
| Cube Facilities Limited | Information & communication | 2024 |
| Cube International Ltd | Arts & recreation | 2019 |
| Culinary Heaven Ltd | Hospitality | 2020 |
| Cullimore Limited | Professional & scientific | 2014 |
| Cullimore Photography Limited | Professional & scientific | 2014 |
| Cullis Construction Limited | Administrative & support | 2014 |
| Cullis Properties Limited | Administrative & support | 2016 |
| Cultural Intelligence Education Limited | Education | 2024 |
| Cummins Management Consulting Ltd | Wholesale & retail | 2026 |
| Cura Children's Homes Ltd | Health & social care | 2026 |
| Curious Compass Ltd | Administrative & support | 2025 |
| Cursed Ltd | Wholesale & retail | 2023 |
| Cursus Archaeology Ltd | Professional & scientific | 2018 |
| Customer First Organisation Limited | Professional & scientific | 2012 |
| Customer Service Solutions Group Limited | Professional & scientific | 2021 |
| Customs Analytics Limited | Information & communication | 2021 |
| CUT Price Pet Supplies Ltd. | Wholesale & retail | 2011 |
| Cuzzies Properties Ltd | Real estate | 2020 |
| CV Air Systems Limited | Manufacturing | 2023 |
| CVR Group Holdings Ltd | Financial services | 2015 |
| CW Plumbing Limited | Construction | 2008 |
| CY Executive Resourcing Limited | Professional & scientific | 2009 |
| CY Kitchen Limited | Hospitality | 2018 |
| CY Resourcing Limited | Administrative & support | 2009 |
| CY Wholesale Limited | Wholesale & retail | 2018 |
| Cyber Secure Testing Ltd | Information & communication | 2026 |
| Cyber-Bdm Ltd | Professional & scientific | 2025 |
| Cybersol Solutions Limited | Information & communication | 2026 |
| Cybr Limited | Financial services | 2020 |
| Cybx Ltd | Information & communication | 2023 |
| Cycle City Ltd | Arts & recreation | 2025 |
| Cycle Sent Ltd | Transport & logistics | 2014 |
| Cygnul Limited | Administrative & support | 2013 |
| Cyte Design Ltd | Information & communication | 2019 |
| Cytoplan Limited | Wholesale & retail | 1980 |
| Czary Mary Limited | Transport & logistics | 2022 |
| D & G Security Systems Limited | Construction | 2011 |
| D & H Services Ltd | Construction | 2015 |
| D & R Logistics Ltd | Wholesale & retail | 2023 |
| D a LAB Tech Ltd | Health & social care | 2024 |
| D and G Consulting Limited | Professional & scientific | 2022 |
| D and L Foods Limited | Wholesale & retail | 2020 |
| D B Services Marine Ltd | Manufacturing | 2024 |
| D Cannon Designs Limited | Other services | 2010 |
| D H Gittins Limited | Construction | 1983 |
| D J Hair Ltd | Other services | 2018 |
| D Jordan Waste Management LLP | | 2020 |
| D W Wood Building Ltd | Construction | 2021 |
| D Worcester Ltd | Wholesale & retail | 2023 |
| D&Bc Limited | Professional & scientific | 2015 |
| D&C Properties Worcester Ltd | Real estate | 2026 |
| D&C Shutters Co. Limited | Construction | 2026 |
| D&D Network Services Limited | Information & communication | 2006 |
| D&D Worcester Nails Limited | Other services | 2020 |
| D&J Accounting Solutions Ltd | Professional & scientific | 2021 |
| D&R Paving & Landscaping Ltd | Construction | 2016 |
| D&S Assets Holdings Ltd | Professional & scientific | 2025 |
| D-Mat GAS and Heating Limited | Construction | 2025 |
| D. F. C. Midlands (Holdings) Limited | Financial services | 2025 |
| D. J. Collins (Worcester) Limited | Construction | 2015 |
| D. Spicer Limited | Manufacturing | 1957 |
| D.B Services Plant Ltd | Administrative & support | 2022 |
| D.J.D. Construction Consultants Limited | Professional & scientific | 2006 |
| D.J.D. Group Limited | Professional & scientific | 2006 |
| D.P. Construction & Building Ltd | Construction | 2020 |
| D3 Securities Ltd | Financial services | 2025 |
| Dabz Creative Limited | Professional & scientific | 2023 |
| Dadasc Limited | Financial services | 2023 |
| Dafa Construction Ltd | Construction | 2019 |
| Daisy Services Ltd | Other services | 2016 |
| Daisy's Doggy Deli Limited | Manufacturing | 2018 |
| Daisychain Benevolent Fund | Wholesale & retail | 2001 |
| Dajo Construction Ltd | Construction | 2025 |
| Dakum Limited | Real estate | 2025 |
| Dale Developments Limited | Real estate | 2010 |
| Dale Endeavours Limited | Financial services | 2019 |
| Dale Investments (Holdings) Limited | Administrative & support | 2007 |
| Dale Investments Limited | Administrative & support | 2007 |
| Dallaswylde Property Investors Ltd | Households | 2023 |
| Dallaswylde Property Management Limited | Households | 2025 |
| Dalley Financial Planning Limited | Professional & scientific | 2021 |
| Dalley Investments Ltd | Real estate | 2023 |
| Damian Barnett Construction Services Ltd | Construction | 2019 |