| TC Operators Ltd | Other services | 2025 |
| TCH Recovery Ltd | Wholesale & retail | 2019 |
| TCH Transport and Sons Ltd | Transport & logistics | 2016 |
| TD Jewellers Ltd | Wholesale & retail | 2026 |
| TD Motor Services Limited | Wholesale & retail | 2017 |
| Teach Lincs Education Ltd | Education | 2022 |
| Teach Lincs Ltd | Education | 2017 |
| Teach Primary Ltd | Education | 2020 |
| Teach Secondary Ltd | Education | 2020 |
| Tech Movers and Shakers Ltd. | Information & communication | 2016 |
| Tech Peak Co Ltd | Wholesale & retail | 2024 |
| TECH34 Retail Services Limited | Professional & scientific | 2013 |
| Techniq Design Ltd | Professional & scientific | 2019 |
| Teda Motors Ltd | Wholesale & retail | 2017 |
| Teddy Bears Childcare (Scunthorpe) Limited | Health & social care | 2018 |
| Teelar Homes Limited | Construction | 2025 |
| Teesdale Printers Limited | Manufacturing | 1986 |
| Teesdale Properties Holdings Limited | Financial services | 2025 |
| Tekdata Interconnections Limited | Manufacturing | 1969 |
| Teknon Overseas Partners Limited | Professional & scientific | 2021 |
| Telford Scientific Limited | Manufacturing | 2018 |
| Tenbuild Ltd | Construction | 2026 |
| Terebro Ltd | Extraterritorial | 2001 |
| TES Commercial Properties Limited | Real estate | 2022 |
| TES Homecare Ltd | Health & social care | 2017 |
| TES Property Services Ltd | Real estate | 2018 |
| TES Property Services SE Limited | Real estate | 2022 |
| TES Rentals Ltd | Transport & logistics | 2011 |
| Teslas Lighting Ltd | Wholesale & retail | 2023 |
| Test Tech Limited | Construction | 2008 |
| TGF 3 Limited | Other services | 2009 |
| TGW Medical Services Limited | Health & social care | 2023 |
| Thacoimpex Limited | Manufacturing | 2024 |
| Thames Valley General Surgery Ltd | Health & social care | 2017 |
| THE Access Panel Company Ltd | Manufacturing | 2000 |
| THE Apple Agency Limited | Extraterritorial | 1997 |
| THE Axholme Academy | Education | 2011 |
| THE Beauty House (Lincs) Ltd | Other services | 2021 |
| THE Big Teacher International Limited | Education | 2016 |
| THE Big Teacher Ltd | Education | 2019 |
| THE Bloom Initiative C.I.C. | Wholesale & retail | 2024 |
| THE Blue Door Support Service CIC | Health & social care | 2020 |
| THE Bottle Box Ltd | Wholesale & retail | 2021 |
| THE Bowel Surgery Limited | Health & social care | 2016 |
| THE Card DEN Ltd | Wholesale & retail | 2025 |
| THE Card Group Ltd | Wholesale & retail | 2026 |
| THE Chirohealth Clinic Ltd | Health & social care | 2006 |
| THE Cock Tavern (Walthamstow) Ltd | Real estate | 2015 |
| THE Coffee Roaster Shop Limited | Wholesale & retail | 2023 |
| THE Cookie People (Brigg) Ltd | Manufacturing | 2023 |
| THE Cookie People (Central Park) Limited | Manufacturing | 2022 |
| THE Cookie People (Lincoln) Limited | Manufacturing | 2024 |
| THE Cookie People Limited | Manufacturing | 2019 |
| THE Cosy Corner Childminders Ltd | Health & social care | 2025 |
| THE CUT Father U.K. Ltd | Other services | 2022 |
| THE Cyprus Barbeque Ltd | Hospitality | 2021 |
| THE Dancing Tiger Scrapstore CIC | Wholesale & retail | 2023 |
| THE Edge Collective CIC | Health & social care | 2025 |
| THE Essential Partnership Limited | Administrative & support | 2012 |
| THE Foodie Town Ltd | Hospitality | 2025 |
| THE Forge Project | Health & social care | 2005 |
| THE Fuzzy Bear Family Ltd | Wholesale & retail | 2016 |
| THE Galley Gang Ltd | Hospitality | 2019 |
| THE Georgian Ltd | Hospitality | 2019 |
| THE Gilded Horn Company Ltd | Hospitality | 2025 |
| THE Gold Buyers Lincs Limited | Wholesale & retail | 2016 |
| THE Green Team Works CIC | Health & social care | 2017 |
| THE Guildford HIP and Knee Clinic Ltd | Health & social care | 2018 |
| THE Hair Plug 88 Limited | Other services | 2023 |
| THE Halo Vibe Limited | Wholesale & retail | 2026 |
| THE Happy Homestead Limited | Wholesale & retail | 2020 |
| THE Heat Source Lincolnshire Limited | Construction | 2011 |
| THE Hollybush Oak Ltd | Real estate | 2022 |
| THE Home Fragrance Lounge Ltd | Wholesale & retail | 2020 |
| THE Hope and Anchor PUB Ltd | Hospitality | 2014 |
| THE Hygiene Hub Limited | Administrative & support | 2018 |
| THE Iron Foundation | Arts & recreation | 2008 |
| THE Islanders (North Lincs) Ltd | Health & social care | 2014 |
| THE IVY Tree Ltd | Hospitality | 2022 |
| THE Khyber Restaurant (Epworth) Limited | Hospitality | 2013 |
| THE Lane Games Co Ltd | Administrative & support | 2025 |
| THE Laundry Room Scunthorpe Ltd | Other services | 2024 |
| THE Learning Line Limited | Education | 2022 |
| THE Learning Tree Preschool @ Priory Lane Ltd | Education | 2020 |
| THE Looking Glass Salon Ltd | Other services | 2019 |
| THE Manby Arms (Stratford) Ltd | Real estate | 2015 |
| THE March Hare (Rasen) Limited | Hospitality | 2022 |
| THE March Hare Delicatessen Limited | Hospitality | 2017 |
| THE Merch Labs Ltd | Wholesale & retail | 2022 |
| THE Miswak Co Ltd | Wholesale & retail | 2026 |
| THE Mobile Physios Limited | Health & social care | 2014 |
| THE Mobility People Ltd | Wholesale & retail | 2025 |
| THE Monobuoy Company Ltd. | Manufacturing | 1998 |
| THE Mortgage Space Limited | Financial services | 2021 |
| THE Movement New Beginnings C.I.C. | Health & social care | 2022 |
| THE Munch Stop Ltd | Wholesale & retail | 2020 |
| THE Neuro Navigator Limited | Health & social care | 2025 |
| THE New Expat Services Ltd | Financial services | 2025 |
| THE New Show Ground Community Interest Company | Education | 2023 |
| THE Old Wheat Barn Ltd | Hospitality | 2022 |