| CK Dixit Group Limited | Transport & logistics | 2025 |
| CKL Cleaning. Ltd | Manufacturing | 2024 |
| CKP Tiling Ltd | Construction | 2026 |
| CL Storage Company Limited | Administrative & support | 2016 |
| Claddach Holdings Ltd | Financial services | 2022 |
| Cladel Developments (Scotland) Ltd | Real estate | 2026 |
| Claims Group Holdings UK Ltd | Other services | 2025 |
| Claire MAC Hair Design Limited | Other services | 2011 |
| Claire Punton Nurse-Led Aesthetics Ltd | Professional & scientific | 2020 |
| Clan Property Ltd | Real estate | 2023 |
| Clan Property Management Ltd | Real estate | 2025 |
| Clanscape Designs Ltd | Administrative & support | 2022 |
| Clarebrook Wholesale Furniture Ltd | Wholesale & retail | 2021 |
| Clark Contracts (Group) Limited | Construction | 2014 |
| Clark Contracts (Scotland) Ltd | Extraterritorial | 2018 |
| Clark Premises Ltd | Financial services | 2025 |
| Clark Tiling Ltd | Construction | 2021 |
| Classic Look Ltd | Wholesale & retail | 2025 |
| CLC Couriers Ltd | Transport & logistics | 2022 |
| Clean Foods UK Meal Prep Limited | Manufacturing | 2017 |
| Cleanco Limited | Administrative & support | 2008 |
| Cleansbyaz Limited | Administrative & support | 2025 |
| Cleanworks UK Ltd | Administrative & support | 2025 |
| Clean’Q Services Limited | Administrative & support | 2025 |
| Clear Financial Planning Ltd | Financial services | 2025 |
| Clearcheck Compliance Ltd | Professional & scientific | 2026 |
| Clearglobal Limited | Real estate | 1993 |
| Clearing Customs UK Ltd | Transport & logistics | 2019 |
| Clinica Cleaning Services Ltd | Administrative & support | 2024 |
| Clippensinn Ltd | Hospitality | 2025 |
| Clipper Property Ltd | Real estate | 2025 |
| Clique Glasgow CIC | Wholesale & retail | 2024 |
| Cloch Double Glazing Ltd | Construction | 2026 |
| Closer Creative Limited | Administrative & support | 2009 |
| Cloud Global Group Limited | Financial services | 2015 |
| Cloud Global Ltd | Transport & logistics | 2010 |
| CLOUD9DELI1 Limited | Hospitality | 2019 |
| Clovelly Painting Group Limited | Extraterritorial | 2025 |
| Clovelly Property Group Limited | Construction | 2024 |
| CLS Fabrication Division Ltd | Construction | 2009 |
| Clyde Air Travels Ltd | Administrative & support | 2013 |
| Clyde Baguette Ltd | Hospitality | 2017 |
| Clyde Communications Limited | Information & communication | 2025 |
| Clyde Core Ltd | Construction | 2026 |
| Clyde Garage Limited | Wholesale & retail | 2007 |
| Clyde Minibus Hire Ltd | Transport & logistics | 2025 |
| Clyde Motor Engineers Ltd. | Wholesale & retail | 2005 |
| Clyde Property Maintenance Ltd | Construction | 2025 |
| Clyde View Opticians Ltd | Health & social care | 2017 |
| Clydeview Fire Protection & Joinery Ltd | Construction | 2010 |
| CM Mitchell Limited | Health & social care | 2004 |
| CMC Electrical (Scotland) Ltd. | Construction | 2010 |
| CMC78 Ltd | Construction | 2017 |
| CMD Utilities Ltd | Energy | 2019 |
| CNB Wealth Management Limited | Financial services | 2022 |
| Co-At Marine Limited | Manufacturing | 2005 |
| Coats Events Limited | Other services | 2020 |
| Cochran Dickie & Mackenzie Holdings Limited | Professional & scientific | 2021 |
| Cochran Dickie Estate Agency Limited | Real estate | 2010 |
| Cochran Dickie Holdings II Limited | Professional & scientific | 2025 |
| Cochran Dickie Lettings Limited | Real estate | 2025 |
| Coco Childrenswear Ltd | Manufacturing | 2017 |
| Code Red Safety Solutions Ltd | Professional & scientific | 2010 |
| Coireachan Ltd | Information & communication | 2015 |
| Coiremanaich Ltd | Construction | 2020 |
| Cokaliong Ltd | Health & social care | 2025 |
| COLABR8 Limited | Information & communication | 2020 |
| COLABR8 Tech Limited | Information & communication | 2025 |
| Cold Blooded Sports Ltd. | Wholesale & retail | 2011 |
| Colin Burns Electrical Services Limited | Energy | 2014 |
| Colin Murray Development Limited | Financial services | 1989 |
| Collins Porter Financial Ltd | Financial services | 2019 |
| Collins Wilson Trading Limited | Other services | 2018 |
| Cologne Strip Ltd | Manufacturing | 2026 |
| Colombian Bites Glasgow Ltd | Hospitality | 2025 |
| Combicom Ltd | Other services | 2018 |
| Combo Klins Ltd | Administrative & support | 2023 |
| Commando Property Ltd | Real estate | 2025 |
| Commensality Ltd | Professional & scientific | 2024 |
| Commercial Sustainability Ltd | Professional & scientific | 2024 |
| Community Anchor Limited | Information & communication | 2020 |
| Community Circus Paisley CIC | Education | 2021 |
| Compact Kitchens Ltd | Manufacturing | 2025 |
| Competence Based Training Limited | Education | 1999 |
| Complete Building Compliance Ltd | Other services | 2025 |
| Complete Dentistry Limited | Health & social care | 2008 |
| Compliant Vehicle Ltd | Wholesale & retail | 2019 |
| Complivent (UK) Limited | Professional & scientific | 2019 |
| Computaplane Limited | Transport & logistics | 1979 |
| Conasa Group Ltd | Construction | 2025 |
| Conbex Civils Limited | Construction | 2016 |
| Concordia Equestrian Ltd | Wholesale & retail | 2015 |
| Connect Church, Paisley | Other services | 2006 |
| Connect Multimedia Holdings Limited | Financial services | 2012 |
| Connect Publications (Scotland) Limited | Information & communication | 2009 |
| Connected Chiropractic Limited | Health & social care | 2016 |
| Connick Catering Company Limited | Hospitality | 2021 |
| Connor Kinnaird Electrical Ltd | Construction | 2023 |
| Connor Mcenhill Ltd | Construction | 2025 |
| Consciously Creating Culture Ltd | Professional & scientific | 2013 |