| Red Elephant Truro Ltd | Wholesale & retail | 2021 |
| Remh Productions Ltd | Arts & recreation | 2025 |
| Restormel Re-Upholstery Limited | Other services | 2014 |
| Retallick Aesthetics Limited | Other services | 2021 |
| Rexto Limited | Professional & scientific | 1983 |
| Robert Mccutcheon Limited | Extraterritorial | 2025 |
| Robotriks Ltd. | Professional & scientific | 2018 |
| Sam-Lets Ltd | Real estate | 2025 |
| Security Bollards Southwest Ltd | Administrative & support | 2024 |
| Sentiment Communications Limited | Professional & scientific | 2022 |
| Seren Surveying Ltd | Other services | 2023 |
| Sewena Letting Limited | Real estate | 2020 |
| Smartstorebox Limited | Transport & logistics | 2013 |
| SNS Associates Limited | Professional & scientific | 2012 |
| Soho Electrical Group Limited | Manufacturing | 2017 |
| Soho Lighting Company Ltd | Manufacturing | 2017 |
| Southpark Court Limited | Households | 2018 |
| Spirit Paws Ltd | Agriculture & fishing | 2023 |
| Splann Ltd | Arts & recreation | 2025 |
| SS and SJC Services Limited | Other services | 2020 |
| ST Blazey Service Station Ltd | Wholesale & retail | 2021 |
| St&M UK Ltd | Wholesale & retail | 2022 |
| ST. Blazey Carpets Limited | Wholesale & retail | 1986 |
| Studley South West Limited | Construction | 2025 |
| Surfcornwall.Com Limited | Information & communication | 2000 |
| Swiggs Symons Limited | Agriculture & fishing | 2023 |
| T & R Design Limited | Wholesale & retail | 2021 |
| Tamichi & Co. Ltd | Real estate | 2022 |
| TAP Talent Ltd | Administrative & support | 2011 |
| Target Roofing Services Ltd | Construction | 2024 |
| Temp Healthcare Solutions Ltd | Health & social care | 2017 |
| THE Burrows Centre Ltd. | Education | 2000 |
| THE Clean Team (SW) Ltd | Administrative & support | 2018 |
| THE Crown Carpet Company(Par) Ltd | Wholesale & retail | 2011 |
| THE Glass & Glazing Company Cornwall Limited | Construction | 2013 |
| THE Kaolin and Ball Clay Association (UK) | Extraterritorial | 1941 |
| THE Merchants Quarter (Charlestown) Property Management Company Ltd | Administrative & support | 2014 |
| THE Molly Fisher Ltd | Wholesale & retail | 2025 |
| THE Ship Inn Polmear Ltd | Hospitality | 2023 |
| THE View - Polruan Management Company Limited | Households | 2022 |
| Timma Homes Ltd | Real estate | 2025 |
| TK Ground Tech Ltd | Construction | 2026 |
| Toms & Taylor Ltd | Hospitality | 2024 |
| Total Electric Renewables Limited | Construction | 2011 |
| Tower Leisure (Cornwall) Limited | Real estate | 2002 |
| Tripping on Flavour Ltd | Wholesale & retail | 2024 |
| True Dairy Ltd | Manufacturing | 2025 |
| Tywardreath Butchers Ltd | Wholesale & retail | 2010 |
| Union Jacks BBQ Ltd | Wholesale & retail | 2020 |
| Unique Beasts Ltd | Manufacturing | 2025 |
| Urbancourt Limited | Real estate | 1991 |
| West Carclaze Garden Village Management Company Limited | Households | 2021 |
| Western Hydro Ltd | Energy | 1993 |
| Wild Wipe Ltd | Wholesale & retail | 2025 |
| Wildflower Pottery Ltd | Manufacturing | 2024 |
| Wipeher Ltd | Extraterritorial | 2022 |
| Yeos Taxis Ltd | Transport & logistics | 2024 |
| YM Hotel Limited | Hospitality | 2018 |