| Commercial Advisors L.P. | | 2015 |
| Commercial Properties Worldwide L.P. | | 2014 |
| Commercial Solutions Europe L.P. | | 2011 |
| Computer Engineering L.P. | | 2015 |
| Comtec IT L.P. | | 2011 |
| Comtech Corporation L.P. | | 2014 |
| Comtech Enterprises L.P. | | 2014 |
| Comtex Corporation L.P. | | 2016 |
| Concord Organisation L.P. | | 2013 |
| Conister Bank Limited | | 2021 |
| Connection Services Worldwide L.P. | | 2014 |
| Connections Worldwide L.P. | | 2013 |
| Construction Star Estates Limited | | 2025 |
| Consult Services Worldwide L.P. | | 2013 |
| Consultant Services Limited | | 2023 |
| Consulting Services Worldwide L.P. | | 2014 |
| Contex Global L.P. | | 2011 |
| Contex Solutions L.P. | | 2010 |
| Continental Development Corporation L.P. | | 2013 |
| Continental Partnership L.P. | | 2014 |
| Continuity Capital REI 1 Ltd | | 2022 |
| Control Services L.P. | | 2016 |
| Control Solutions L.P. | | 2013 |
| Contshipment Worldwide L.P. | | 2010 |
| Convertible Hedge Associates LP | | 2014 |
| Convoy Investments Limited | | 2016 |
| Convoy Investments Limited | | 2023 |
| Conway Organisation L.P. | | 2015 |
| Cool Supplies L.P. | | 2013 |
| Coolbay Investments L.P. | | 2013 |
| Coolmore Corporation L.P. | | 2015 |
| Coolmore Investments L.P. | | 2013 |
| Coppertree Limited | | 2023 |
| Coral Ventures L.P. | | 2012 |
| Corginalle Limited | | 2023 |
| Corinthian Properties Limited | | 2023 |
| Corkills Group (Holdings) Limited | | 2023 |
| Cornelius Investments Limited | Professional & scientific | 1997 |
| Cornish Gateway Services Limited | | 2022 |
| Cornwall Mews (NO.32) Limited | | 2023 |
| Cornwall Mews (NO.41) Limited | | 2023 |
| Cornwall Terrace (NO. 2&3) Limited | | 2023 |
| Cornwall Terrace (NO.11 & 12) Limited | | 2023 |
| Corozal Limited | | 2025 |
| Corpland Alliance L.P. | | 2010 |
| Corporal Technology L.P. | | 2015 |
| Corporate Management & Business Services Limited | | 2024 |
| Corporate Management Advisors L.P. | | 2015 |
| Corporate Management Worldwide L.P. | | 2014 |
| Corporate Promotions Worldwide L.P. | | 2013 |
| Corporate Services International L.P. | | 2015 |
| Corse Fort LP | | 2016 |
| Corsica Sea LP | | 2016 |
| COS Limited | | 2023 |
| Cosmo Engineering L.P. | | 2015 |
| Cosmo Technology L.P. | | 2013 |
| Costal Enterprises L.P. | | 2014 |
| Cotax Limited | | 2023 |
| Countrylife Trading LP | | 2023 |
| Countrywide Investments Limited | | 2023 |
| Courtfield Investments L.P. | | 2013 |
| Covault Bath ST Glasgow Limited | | 2022 |
| Covault Gordon ST Glasgow Limited | | 2022 |
| Cove Estates Limited | | 2022 |
| Coventry House (2015) Limited | | 2022 |
| Coyney Properties Limited | | 2023 |
| CP Real Estate Limited | | 2022 |
| CPS Distributing L.P. | | 2013 |
| Crag Hill Estates Limited | | 2023 |
| Crag View Limited | | 2007 |
| Craic Investments Limited | | 2022 |
| Cranberry Investments Limited | | 2023 |
| Cranbourne Limited | | 2023 |
| Cranfield Investments Limited | | 2023 |
| Crathes Investments Limited | | 2023 |
| Creacion Popular LP | | 2014 |
| Creative Technology Alliance L.P. | | 2014 |
| Creativist LP | | 2013 |
| Creggan Ashen Limited | | 2023 |
| Crellin DE Courcy Limited | | 2022 |
| Crenagh Properties Limited | | 2022 |
| Crest Import/Export L.P. | | 2013 |
| Crest Overseas L.P. | | 2015 |
| Crest Resources L.P. | | 2012 |
| Crestmoor Limited | | 2023 |
| Creston Properties Limited | | 2022 |
| Crestvale Investments L.P. | | 2013 |
| Cricklewood Ventures Limited | | 2023 |
| Crimson Assets L.P. | | 2009 |
| Criterion Buildings Limited | | 2022 |
| Criterion Property Limited | | 2022 |
| Croftway Investments L.P. | | 2015 |
| Cromford Trading LP | | 2014 |
| Croskine L.P. | | 2013 |
| Cross Keys Estates Limited | | 2024 |
| Crossacres Limited | | 2023 |
| Crowngate Commercial Limited | | 2022 |
| Crowngate Residential Limited | | 2022 |
| Croydon Retail Ltd | | 2023 |
| Crystal Maze Limited | | 2022 |