| Communication Support for ALL Limited | Education | 2025 |
| Community Ambassadors International | Education | 2010 |
| Community Care Worker Limited | Health & social care | 2015 |
| Community Scrap Shack CIC | Arts & recreation | 2010 |
| Compania MLS Ltd | Transport & logistics | 2026 |
| Companyhelpers Limited | Professional & scientific | 2002 |
| Compass Chemicals (UK) Limited | Wholesale & retail | 1988 |
| Compass Management Services Limited | Health & social care | 2017 |
| Compassionate Caregivers Ltd | Health & social care | 2023 |
| Competition Sisters Ltd | Arts & recreation | 2023 |
| Complete Beauty Salon Ltd | Other services | 2024 |
| Complete Bespoke Care Ltd | Health & social care | 2025 |
| Complete Bespoke Interiors Limited | Construction | 2015 |
| Complete Bespoke Rentals Ltd | Real estate | 2023 |
| Complete Building Solutions (CBS) Ltd | Construction | 2021 |
| Complete Business Solutions Limited | Administrative & support | 2025 |
| Complete Communication Solutions Limited | Information & communication | 2004 |
| Complete Construction (Stoke) Ltd | Construction | 2023 |
| Complete Home and Property Solutions Ltd | Construction | 2025 |
| Complete Home Creations Limited | Construction | 2025 |
| Complete Joinery & Maintenance Ltd | Construction | 2023 |
| Complete Padel Ltd | Wholesale & retail | 2026 |
| Complete Solutions (SOT) Limited | Construction | 2009 |
| Complete Sports Solutions Ltd. | Administrative & support | 2008 |
| Complete Sports Solutions Transport Limited | Administrative & support | 2010 |
| Complete Ventures 1 Limited | Financial services | 2023 |
| Complete Ventures Acqco 1 Limited | Financial services | 2023 |
| Completely Crafty Ltd | Wholesale & retail | 2024 |
| Complex Care Property Management Limited | Real estate | 2017 |
| Complexarty Ltd | Information & communication | 2025 |
| Compluter Ltd | Information & communication | 2026 |
| Composite Consultants (TCS) Limited | Professional & scientific | 2017 |
| Compsoluk Limited | Wholesale & retail | 2013 |
| Compton Marketing Limited | Administrative & support | 2003 |
| Computava Limited | Other services | 2024 |
| CON FBA Store Ltd | Wholesale & retail | 2023 |
| Conaire Blaize Limited | Hospitality | 2015 |
| Concept Golf Lexden Wood Ltd | Professional & scientific | 2023 |
| Concept Marketing and Communications Ltd | Professional & scientific | 2022 |
| Conceptncreate Ltd | Professional & scientific | 2021 |
| Confidon Ltd | Information & communication | 2025 |
| Confirma Education Limited | Education | 2018 |
| Congleton Development Limited | Construction | 2016 |
| Congleton Lawn Tennis Club Limited | Arts & recreation | 1927 |
| Conguru Solutions Limited | Information & communication | 2025 |
| Conjac Limited | Construction | 2023 |
| Connect 200 Limited | Wholesale & retail | 2016 |
| Connect Anything Limited | Administrative & support | 2019 |
| Connect Electrical (Staffs) Ltd | Construction | 2009 |
| Connect Electrical Supplies Limited | Wholesale & retail | 2004 |
| Connect Insurance Brokers Limited | Financial services | 2002 |
| Connect Stoke Ltd | Public administration | 2019 |
| Connecting the Wild Limited | Real estate | 2019 |
| Connective Care Group Ltd | Financial services | 2025 |
| Connective Careers Pathways Ltd | Administrative & support | 2025 |
| Connell Concierge Club Limited | Administrative & support | 2025 |
| Connell&Co Limited | Real estate | 2021 |
| Consall Hydro Limited | Energy | 2013 |
| Consolidated Brands UK Ltd | Wholesale & retail | 2018 |
| Constance Holdings Ltd | Real estate | 2026 |
| Construct Design AI Limited | Information & communication | 2026 |
| Construction 4 AAP Ltd | Construction | 2024 |
| Construction Joinery Limited | Construction | 2018 |
| Construction Legal Consultants Limited | Professional & scientific | 2012 |
| Consulting & Logistics Ltd | Administrative & support | 2017 |
| Consultm Limited | Professional & scientific | 2004 |
| Consultoris Elite Limited | Information & communication | 2012 |
| Consultyli Ltd | Real estate | 2024 |
| Cont Limited | Other services | 2025 |
| Contemporary Collage Magazine Limited | Information & communication | 2023 |
| Continental Links Limited | Wholesale & retail | 2017 |
| Contole Tendtrec Ltd | Wholesale & retail | 2022 |
| Contract Property Maintenance Ltd | Construction | 2025 |
| Contracting and Servicing LP | | 2011 |
| Contractormedia Ltd | Professional & scientific | 2024 |
| CONVERSE2 Ltd | Construction | 2022 |
| Converter CAD Limited | Information & communication | 2018 |
| Conway Evans Carpentry Ltd | Construction | 2016 |
| Cooke Electrical Services Ltd | Construction | 2022 |
| Coole Barns Development Limited | Construction | 2013 |
| Coole Barns Management Limited | Extraterritorial | 2014 |
| Cooper & Sons Properties Limited | Real estate | 2025 |
| Cooper 5 Holdings Limited | Financial services | 2019 |
| Cooper 5 Topco Limited | Financial services | 2024 |
| Cooper Accountancy Services Limited | Professional & scientific | 2016 |
| Cooper Electrical Contractors Limited | Construction | 2016 |
| Cooper Roberts Exhibitions Ltd | Administrative & support | 2020 |
| Cooper Roberts Logistics Ltd | Transport & logistics | 2020 |
| Coopers Mechanical and Electrical Ltd | Energy | 2020 |
| Coopers Motor Company Ltd | Wholesale & retail | 2018 |
| Cope and Co Legal Services Limited | Professional & scientific | 2025 |
| Copelands Holdings Limited | Financial services | 2019 |
| Copelands Tours (Stoke on Trent) Limited | Transport & logistics | 1980 |
| Copes Florists Limited | Wholesale & retail | 2003 |
| Coping Together CIC | Education | 2023 |
| Coplanar Studios Limited | Information & communication | 2016 |
| Copper & Optic Terminations Limited | Manufacturing | 1997 |
| Copper Alloy Products Limited | Manufacturing | 2008 |
| Coppice View Holdings Ltd | Construction | 2025 |
| Copshurst Property Management Ltd | Real estate | 2012 |