| THE Falmouth Distilling Co. Ltd | Manufacturing | 2020 |
| THE Falmouth Round House Management Company Limited | Other services | 2017 |
| THE Falmouth Sail Training Ship | Arts & recreation | 2004 |
| THE Fishlocker Ltd | Agriculture & fishing | 2019 |
| THE Flower Barn Ltd | Wholesale & retail | 2026 |
| THE Food Barn Tregew CIC | Wholesale & retail | 2020 |
| THE Games Room (Falmouth) Limited | Hospitality | 2016 |
| THE Heir and Bell Ltd | Hospitality | 2019 |
| THE John Knowles Company Limited | Professional & scientific | 1995 |
| THE Leven Clinic Limited | Health & social care | 2025 |
| THE Lizard Leaf Company Limited | Agriculture & fishing | 2008 |
| THE London International Academy Limited | Education | 2010 |
| THE Mert Club CIC | Other services | 2021 |
| THE Monogram Hotel Group Ltd | Other services | 2024 |
| THE Montimare Group Limited | Manufacturing | 2024 |
| THE Morgan Leith Partnership Limited | Professional & scientific | 2003 |
| THE Movement Project Cornwall Ltd | Other services | 2022 |
| THE Oceanic Falmouth Management Company Limited | Households | 2023 |
| THE Oggy Oggy Franchise Limited | Hospitality | 2012 |
| THE Old Carthouse Ltd | Construction | 2026 |
| THE Old Post Office Bakery Limited | Real estate | 2002 |
| THE Others Beauty Co Limited | Wholesale & retail | 2016 |
| THE Partnership Marketing Communications Limited | Professional & scientific | 1997 |
| THE Pasty Box CIC | Education | 2024 |
| THE Pilot Boat Restaurant Limited | Hospitality | 2025 |
| THE RC Lizard Limited | Real estate | 2020 |
| THE Red Poppy Company Limited | Health & social care | 2002 |
| THE Royal Cornwall Polytechnic Society Limited | Wholesale & retail | 2000 |
| THE Royal Cornwall Yacht Club Limited | Arts & recreation | 2019 |
| THE Salt Sisterhood Ltd | Administrative & support | 2020 |
| THE Sandy Duck Ltd | Hospitality | 2016 |
| THE Taphouse (SW) Ltd | Hospitality | 2015 |
| THE Tidal Table Ltd | Hospitality | 2026 |
| THE Tolmen Operating Company Limited | Arts & recreation | 2005 |
| THE Warren Links Partnership LLP | | 2017 |
| THE Weir (Buckfastleigh) Limited | Real estate | 2005 |
| THE Wellness Hub Falmouth Ltd | Real estate | 2021 |
| Then TRY This | Information & communication | 2014 |
| Thomas Frost Photography Limited | Professional & scientific | 2023 |
| Throttl Industries Ltd | Wholesale & retail | 2025 |
| Tigerrific Productions Limited | Arts & recreation | 2006 |
| Tilas Cleaning Ltd | Administrative & support | 2025 |
| TIM James Music Limited | Information & communication | 2003 |
| Time Engine Limited | Administrative & support | 2020 |
| Time Team Digital Limited | Information & communication | 2011 |
| Tinners Property Group Limited | Real estate | 2019 |
| Tipples Field Ltd | Real estate | 2023 |
| Tirhamor Ltd | Construction | 2021 |
| TJD HR Consultancy Ltd | Administrative & support | 2026 |
| Toby Johnson Consulting Limited | Professional & scientific | 2021 |
| TOM Raffield Ltd | Manufacturing | 2013 |
| Tonic Impact Partners Ltd | Professional & scientific | 2024 |
| TOR Marine Limited | Professional & scientific | 2017 |
| Torr Commercial Services Limited | Financial services | 2006 |
| Torr Innovations Ltd | Manufacturing | 2008 |
| Tots of FUN Limited | Wholesale & retail | 2018 |
| Toucanism Ltd | Hospitality | 2024 |
| Touchbyte Ltd | Information & communication | 2012 |
| Tower Hill Garage Sussex Ltd | Wholesale & retail | 2023 |
| Tower Hill Garage Sussex Properties Ltd | Real estate | 2025 |
| Towill Brothers Ltd | Administrative & support | 2016 |
| TR Safety Solutions Ltd | Other services | 2015 |
| TR Windows and Doors Ltd | Construction | 2025 |
| Tracy RAE Counselling Ltd | Health & social care | 2023 |
| Train AID Solutions Limited | Information & communication | 2025 |
| Trajo Ltd | Hospitality | 2012 |
| Travellean Ltd | Construction | 2025 |
| TRE A-Dre Limited | Real estate | 2024 |
| TRE Nova Developments Ltd | Construction | 2024 |
| Treaty Jewellery Cornwall Limited | Wholesale & retail | 2024 |
| Treaty Jewellery Ltd | Wholesale & retail | 2009 |
| Trebartha Estates Limited | Real estate | 1940 |
| Trebartha Hydro Ltd | Energy | 2013 |
| Trebarvah Farm Management Company Limited | Households | 2016 |
| Trebarveth Estate Management Limited | Manufacturing | 2010 |
| Tredanak Energy Limited | Construction | 2023 |
| Trefusis Court (Falmouth) Management Company Limited | Hospitality | 1980 |
| Tregavethan Hospitality Ltd | Hospitality | 2020 |
| Trekeen Technical Services Ltd | Professional & scientific | 2015 |
| Trelawney Catering Limited | Hospitality | 2020 |
| Trelawney Close Management Limited | Households | 2001 |
| Treleven Property Management Company Limited | Real estate | 2016 |
| Treloquithack Management Limited | Real estate | 2007 |
| Trelowen Property Limited | Construction | 2020 |
| Tremaine Plant Hire Limited | Administrative & support | 2025 |
| Tremrose (ST Keverne) Management Company Limited | Real estate | 2011 |
| Trenarth Ltd | Financial services | 2012 |
| Trengayor Woodworks Limited | Manufacturing | 2024 |
| Trengilly Wartha Limited | Hospitality | 2006 |
| Tresillian House Limited | Hospitality | 2024 |
| Tresooth Cottages Ltd | Construction | 2021 |
| Tresooth Ltd | Construction | 2021 |
| Trevaney Lodges Ltd | Hospitality | 2025 |
| Trevaskis Design Solutions Limited | Professional & scientific | 2015 |
| Trevaskis Holdings Ltd | Financial services | 2026 |
| Trevellan Road Management Limited | Households | 1994 |
| Trevelyan Holiday Homes Ltd | Hospitality | 2010 |
| Treverva Farm Cottages Ltd | Real estate | 2026 |
| Trevissomeholdings Ltd | Real estate | 2025 |
| Trevoney Water Woodland Company Limited | Households | 1989 |