| THE Cornwall Tile Company Ltd | Wholesale & retail | 2015 |
| THE Countryman's Restaurant Limited | Hospitality | 2023 |
| THE Curry Galaxy Ltd | Hospitality | 2018 |
| THE Deck at Charlestown Ltd | Hospitality | 2026 |
| THE Drinnan Court Management Company Limited | Households | 2007 |
| THE Farming Mother CIC | Agriculture & fishing | 2022 |
| THE Financial Advice Centre (South West) Limited | Financial services | 2000 |
| THE Friendly Garden Co. Cornwall Ltd | Agriculture & fishing | 2026 |
| THE Fully Booked Coach Limited | Professional & scientific | 2023 |
| THE Gaget Outlet Limited | Wholesale & retail | 2025 |
| THE Garage Co. (Newquay) Limited | Wholesale & retail | 2008 |
| THE Gorran Estate Company Limited | Real estate | 2018 |
| THE Gover Community C.I.C. | Hospitality | 2024 |
| THE Habitat Restoration Company Ltd | Agriculture & fishing | 2024 |
| THE Hair Kutz Academy Limited | Education | 2019 |
| THE Hair Loft (SW) Limited | Real estate | 2021 |
| THE Harbour Gallery Ltd | Wholesale & retail | 2015 |
| THE Harp Clinic Ltd | Health & social care | 2025 |
| THE Hobby Shed Ltd | Wholesale & retail | 2024 |
| THE Hungry Bros Ltd | Hospitality | 2026 |
| THE Laurels (Lanjeth) Management Company Limited | Households | 2021 |
| THE Leash Lounge Ltd | Other services | 2024 |
| THE Little Flower Box Ltd | Wholesale & retail | 2023 |
| THE Little Linen Company (Cornwall) Limited | Administrative & support | 2022 |
| THE Lugger Inn Ltd | Hospitality | 2015 |
| THE Marquis Collection Ltd | Wholesale & retail | 2020 |
| THE Menopause LAB Limited | Wholesale & retail | 2022 |
| THE Mill Courtyard Limited | Real estate | 2014 |
| THE Mortgage Advice Desk Limited | Financial services | 2016 |
| THE Old Mill Photo Studios Ltd | Professional & scientific | 2013 |
| THE Old Smelting Works Management Company Limited | Households | 2020 |
| THE Pet Centre Truro Ltd | Wholesale & retail | 2022 |
| THE Pickled Prawn Ltd | Hospitality | 2023 |
| THE Pitch CIC | Arts & recreation | 2023 |
| THE Proud Collective CIC | Education | 2024 |
| THE Really Useless Company Ltd | Wholesale & retail | 2023 |
| THE Red Agency Ltd | Administrative & support | 2011 |
| THE Rock Inn Roche Limited | Hospitality | 2022 |
| THE SEW and Sews Cornwall CIC | Manufacturing | 2022 |
| THE Shredquarters Franchising Limited | Arts & recreation | 2019 |
| THE Surfboard Surgery Limited | Manufacturing | 2025 |
| THE Tanning Loft Group Ltd | Other services | 2025 |
| THE Taste of India ST Austell Ltd | Hospitality | 2023 |
| THE Unthought Known Ltd | Extraterritorial | 2023 |
| THE Vape Shoppe Ltd. | Wholesale & retail | 2015 |
| THE Vegan Pasty Company Ltd | Manufacturing | 2022 |
| THE Velvet Space Limited | Other services | 2026 |
| THE Waffle House Limited | Hospitality | 2014 |
| Thetanningbooth Ltd | Other services | 2020 |
| Thin END Management Company Ltd | Real estate | 2018 |
| Thompson Electrical Services (SW) Ltd | Construction | 2024 |
| THREEZERO12 Ltd | Arts & recreation | 2016 |
| Tide Security Ltd | Administrative & support | 2022 |
| Tier Zero Games Limited | Wholesale & retail | 2017 |
| Tigerridge Consultancy Services Limited | Information & communication | 1998 |
| TII Aquaculture Limited | Agriculture & fishing | 2019 |
| Tileworld (Cornwall) Limited | Wholesale & retail | 2005 |
| Time Savvy Ltd | Administrative & support | 2024 |
| Ting Tang Properties Limited | Real estate | 2000 |
| Titanloop Logistics Ltd | Transport & logistics | 2026 |
| TMC Gates and Garage Doors Ltd | Manufacturing | 2025 |
| TMN Valeting Services Ltd | Wholesale & retail | 2025 |
| Toniq Composites Ltd | Manufacturing | 2005 |
| Toniq Limited | Manufacturing | 2002 |
| Totally PC Clothing Ltd | Wholesale & retail | 2018 |
| Touch Accountants Ltd | Professional & scientific | 2019 |
| Trackitem Property Management Limited | Professional & scientific | 2004 |
| Trader Publications Ltd | Information & communication | 2026 |
| Trader Publications SW Ltd | Information & communication | 2026 |
| Transatlantic Bond Ltd | Administrative & support | 2021 |
| Transparent Presence CIC | Information & communication | 2021 |
| Tregenna Farm Barns Management Company Limited | Other services | 2016 |
| Tregorrick Leisure Centre CIC | Arts & recreation | 2021 |
| Trelavour Farm Estate Ltd | Construction | 2025 |
| Trelavour Road Garage (SW) Ltd | Wholesale & retail | 2026 |
| Trelavour Road Garage Ltd | Wholesale & retail | 2025 |
| Trelawney Ales Limited | Hospitality | 2025 |
| Trelawney Glass Ltd | Manufacturing | 2026 |
| Trelawny Landscaping Ltd | Administrative & support | 2003 |
| Treloar Close Residents Association | Households | 2023 |
| Tremap Limited | Information & communication | 2021 |
| Trembear Management Company Limited | Households | 2007 |
| Tremena View (ST Erth) Management Company Ltd | Households | 2024 |
| Trerice Manor Services Ltd | Real estate | 2020 |
| Trevarth Residents Company Limited | Professional & scientific | 1985 |
| Treveague Campsite Ltd | Hospitality | 2013 |
| Treveor Farm Ltd | Hospitality | 2003 |
| Treverbyn Road Management Company Limited | Households | 2016 |
| Treverbyn Trade Cars T/A Treverbyn Car Sales Ltd | Wholesale & retail | 2026 |
| Treveth Limited | Real estate | 2017 |
| Treviscoe Motor Co. Limited | Wholesale & retail | 2025 |
| Trevorry Farm Ltd | Agriculture & fishing | 2026 |
| Trinity Café (ST Austell) Limited | Hospitality | 2024 |
| True Form Surf Coaching Ltd | Arts & recreation | 2025 |
| Truesilver Property Group Ltd | Real estate | 2022 |
| Truro HIP and Knee Solutions Limited | Health & social care | 2022 |
| TS Chillz Ltd | Hospitality | 2025 |
| TW Decorating Services Ltd | Construction | 2015 |
| Twow Marine Ltd | Professional & scientific | 2026 |
| UK Artisan Aesthetics Limited | Health & social care | 2025 |