| Control Projects Corp. LP | | 2015 |
| Control Projects Invest LP | | 2015 |
| Control Projects LP | | 2015 |
| Controlgear Direct Limited | Wholesale & retail | 1996 |
| Controlone Ltd | Information & communication | 2023 |
| Contropanels Limited | Professional & scientific | 1960 |
| Contwest L.P. | | 2013 |
| Convenience Local Alloa Ltd | Wholesale & retail | 2024 |
| Convenience Local Ltd | Wholesale & retail | 2023 |
| Convenience Local Motherwell Limited | Wholesale & retail | 2023 |
| Converge Solutions Limited | Administrative & support | 2024 |
| Convergent-Av Ltd. | Wholesale & retail | 2002 |
| Conversational & Generative AI Ltd | Information & communication | 2023 |
| Conversio Consultants Limited | Administrative & support | 2017 |
| Conversio Consulting Limited | Administrative & support | 2011 |
| Convertoryx Online Processing Ltd | Information & communication | 2026 |
| Convi Soft LP | | 2018 |
| Convivo Ltd | Information & communication | 2025 |
| Convoi Energy Limited | Administrative & support | 2015 |
| Convolo Executive Partnership LP | | 2024 |
| Convolo Management LP | | 2024 |
| Conyon Gardening Ltd | Construction | 2025 |
| Conyryn Ltd | Professional & scientific | 2023 |
| COO Cafes Ltd | Hospitality | 2026 |
| Coob Limited | Professional & scientific | 2005 |
| Coogan Property Ltd | Real estate | 2017 |
| Cookalet Ltd | Manufacturing | 2025 |
| Cookflow Limited | Real estate | 2001 |
| Cooksey Technology Group Limited | Information & communication | 2024 |
| Cooktown & Associates | | 1990 |
| Cool and Chill Ltd | Administrative & support | 2025 |
| Cool Botanical Ltd | Professional & scientific | 2017 |
| Cool Breeze Ltd | Construction | 2008 |
| Cool Epoch LP | | 2016 |
| Cool Expert Limited | Manufacturing | 2017 |
| Cool Hand Group | | 1992 |
| Cool Jade Edinburgh Limited | Hospitality | 2016 |
| Cool Milk Caledonia Limited | Administrative & support | 2021 |
| Cool Million Ltd | Professional & scientific | 2015 |
| Coolab Ltd | Manufacturing | 2025 |
| Coolbillboards Limited | Information & communication | 2017 |
| Coolfarm Trade LP | | 2018 |
| Coolibah Properties Limited | Real estate | 2012 |
| Coolicon Lighting Ltd | Manufacturing | 2015 |
| Cooling Air Ltd | Construction | 2026 |
| Coolmore Alliance L.P. | | 2014 |
| Coolside Holdings Limited | Wholesale & retail | 2018 |
| Coolthstore Limited | Manufacturing | 2022 |
| Coombs Solicitors and Notaries Limited | Professional & scientific | 2019 |
| Coop Restaurant Limited | Hospitality | 2014 |
| Cooper Experts LP | | 2014 |
| Cooper Johnson Law Ltd. | Professional & scientific | 2019 |
| Cooper Management LP | | 2014 |
| Cooper Systems LP | | 2014 |
| Cooper United Partnership LP | | 2002 |
| Cooper Watson Limited | Real estate | 2014 |
| Cooperation Technologies L.P. | | 2011 |
| Coopers Rest Ltd | Hospitality | 2025 |
| Coopersea Design LP | | 2013 |
| Coopoo Consult LP | | 2013 |
| Coorie Doon Reekie Ltd | Real estate | 2018 |
| Coorie DUG LLP | | 2023 |
| Coorie With US Limited | Professional & scientific | 2023 |
| Coorstek Limited | Manufacturing | 1988 |
| Coosie Limited | Financial services | 2024 |
| Copa Florestal III Feeder a L.P. | | 2016 |
| Copata Limited | Wholesale & retail | 2017 |
| Copernicus of Edinburgh Ltd. | Other services | 2008 |
| Copfoton Trading LP | | 2015 |
| Coplandia Ltd | Financial services | 2025 |
| Copper & Carbon Ltd | Professional & scientific | 2020 |
| Copper Column Spirits Limited | Manufacturing | 2019 |
| Copper Dog Whisky Limited | Hospitality | 2013 |
| Copper Grey Developments Limited | Construction | 2017 |
| Copper Key 1 Limited | | 2005 |
| Copper Solutions LP | | 2015 |
| Copperberg L.P. | | 2013 |
| Copperhead Ltd | Other services | 2015 |
| Copperhouse Court Limited | Other services | 2023 |
| Copperpenny Ltd | Real estate | 2026 |
| Coppertail Energy Ltd | Construction | 2025 |
| Coppola Boxing Gym Ltd | Arts & recreation | 2024 |
| Copy and Storywriting Production LP | | 2022 |
| Copy House Limited | Professional & scientific | 2019 |
| Copymade Limited | Manufacturing | 2002 |
| Copystop Edinburgh Limited | Manufacturing | 2012 |
| COQ & Bull (Butchers) Limited | Wholesale & retail | 2019 |
| Cora Supreme LP | | 2016 |
| Coraj Media Limited | Administrative & support | 2018 |
| Coral Consult Limited | Wholesale & retail | 2025 |
| Coral LP | | 2020 |
| Coral Travel Service LP | | 2016 |
| Coralcom LP | | 2016 |
| Coralex Management L.P. | | 2015 |
| Coralino Group LP | | 2017 |
| Corally Holding LP | | 2016 |
| Coralmason Impex LP | | 2012 |
| Coranda SP | | 2003 |
| Corata Group Ltd | Arts & recreation | 2024 |
| Corbett & Kshetri Ltd | Hospitality | 2023 |