| Boyd Demolition Ltd | Construction | 2019 |
| Boyle Brothers Limited | Professional & scientific | 2026 |
| Brae Property Ltd | Real estate | 2026 |
| Brian Stevenson Ltd | Construction | 2023 |
| Bridgend Property Limited | Real estate | 2016 |
| Bright Starts Nursery (Greenock) Ltd | Other services | 2010 |
| Brisbane Street 1972 Limited | Extraterritorial | 2014 |
| Brow House Permanent Cosmetics Ltd | Other services | 2024 |
| BS Welding & Engineering Inspection Services Limited | Other services | 2019 |
| BSB99 Ltd | Real estate | 2019 |
| BTE Tech Limited | Professional & scientific | 2019 |
| Buchanans (Scotland) Limited | Manufacturing | 1988 |
| Buckfield Limited | Wholesale & retail | 2025 |
| Build Depot Limited | Wholesale & retail | 1997 |
| Burnbank Investments Limited | Real estate | 2008 |
| Business Development Advisers Limited | Professional & scientific | 1997 |
| Butterfly and the Wolf Salons Ltd | Other services | 2022 |
| Bxhire Ltd | Wholesale & retail | 2017 |
| BY Karis Georgina Ltd | Other services | 2025 |
| BY Kirstie Ltd | Other services | 2022 |
| C COV Limited | Professional & scientific | 2011 |
| C M Autos Limited | Wholesale & retail | 2009 |
| C Percival Limited | Professional & scientific | 2024 |
| C Sharp Ltd | Construction | 2026 |
| C&D Tavern Ltd | Hospitality | 2024 |
| C&J Tiling Scotland Limited | Other services | 2023 |
| C&R Coaches Limited | Transport & logistics | 2012 |
| C.A. Bathrooms Limited | Construction | 2013 |
| Cafe Balfe Limited | Hospitality | 2005 |
| Cafe' MOR' Ltd | Hospitality | 2018 |
| Caledon Green Generation Limited | Energy | 2018 |
| Caledonia Facilities Maintenance Ltd | Administrative & support | 2024 |
| Caledonian Travel Coach Holidays Limited | Transport & logistics | 2020 |
| Caley Pines Tours and Transfers Ltd | Administrative & support | 2025 |
| Call Assistance Ltd | Other services | 2022 |
| Calm Kids Corner Ltd | Other services | 2024 |
| Calorie Comedy Club Ltd | Health & social care | 2020 |
| Cameron Mangan Personal Training Ltd | Other services | 2024 |
| Campbell Clifford Mortgages Ltd | Financial services | 2025 |
| Candy Store Scot Ltd | Wholesale & retail | 2025 |
| Cannon Leisure (Scotland) Limited | Other services | 2005 |
| Cappielow Car Sales Ltd | Wholesale & retail | 2025 |
| Cappielow Investments Ltd | Real estate | 2018 |
| Capstone Asset Management Limited | Professional & scientific | 2015 |
| Captains Food Hub Ltd | Hospitality | 2024 |
| Carben Properties Ltd | Real estate | 2022 |
| Cardco Scot Ltd | Wholesale & retail | 2024 |
| Care Assured 24 Ltd | Health & social care | 2024 |
| Carnage Events Limited | Other services | 2019 |
| Carnage Fitness Studio Ltd | Arts & recreation | 2026 |
| Carpet Fitting Services (West) Limited | Construction | 2018 |
| Carpet Master Binding Services Limited | Manufacturing | 2020 |
| Carpetwize Limited | Wholesale & retail | 2018 |
| Carrolls Furniture Limited | Wholesale & retail | 2022 |
| Caskie Limited | Construction | 2005 |
| Caskie Property Development Ltd | Construction | 2022 |
| Cassidecks Electrical Ltd | Manufacturing | 2020 |
| Cat Black Ltd | Hospitality | 2024 |
| Cathie Scott Properties Limited | Real estate | 2013 |
| CBT Inverclyde Limited | Other services | 2022 |
| Cdls Projects Limited | Construction | 2026 |
| Cdps Investments Limited | Hospitality | 2020 |
| CE Marine Ltd | Transport & logistics | 2023 |
| CE Properties (Scotland) Ltd | Real estate | 2023 |
| CF Construction Service Ltd | Construction | 2018 |
| CH Traders Limited | Wholesale & retail | 2025 |
| Chayote BPM Ltd | Information & communication | 2024 |
| Chayote Lets Ltd | Real estate | 2025 |
| Chez Albert Guesthouse Limited | Hospitality | 2017 |
| China 168 Greenock Ltd | Hospitality | 2025 |
| China Inn 168 Ltd | Hospitality | 2025 |
| Chitchat Marketing Limited | Professional & scientific | 2019 |
| Chris Bell Quality Solutions Limited | Professional & scientific | 2022 |
| Chris Sinclair Ltd | Construction | 2025 |
| Chris Wright & Sons Ltd | Construction | 2005 |
| Cigna 2000 UK Pension Limited | Financial services | 1999 |
| CJP Property Maintenance Limited | Construction | 2022 |
| CK Financial Advisory Ltd | Financial services | 2015 |
| Clayhunt Limited | Administrative & support | 2003 |
| Clean UP the Clyde | Professional & scientific | 2025 |
| Cleaning Supplies 4U Limited | Wholesale & retail | 2012 |
| Clearview Minds Ltd | Administrative & support | 2016 |
| Cloud Link Wholesale Limited | Wholesale & retail | 2025 |
| Clyde Auto Sales (Scotland) Ltd. | Wholesale & retail | 2013 |
| Clyde Auto Sales Ltd. | Wholesale & retail | 2008 |
| Clyde Cable Supplies Limited | Wholesale & retail | 2017 |
| Clyde Car Company Ltd | Wholesale & retail | 2025 |
| Clyde Coast Tourism Ltd | Administrative & support | 2013 |
| Clyde Eats Ltd | Hospitality | 2021 |
| Clyde Floating Homes Limited | Manufacturing | 2026 |
| Clyde Injury Clinic Limited | Health & social care | 2016 |
| Clyde Invest Limited | Financial services | 2025 |
| Clyde Power and Renewables Limited | Energy | 2019 |
| Clyde Property Company (Greenock) Limited | Real estate | 2002 |
| Clyde Property Rentals Ltd | Hospitality | 2025 |
| Clyde Tides Holdings Ltd | Real estate | 2017 |
| Clyde Tool Hire Limited | Administrative & support | 2016 |
| Clyde Valley Accounting Ltd | Professional & scientific | 2018 |
| Clyde Youth Theatre Productions Ltd | Arts & recreation | 2024 |
| Clydebuilt Installations Ltd | Construction | 2021 |