| THE Grand Risers CIC | Education | 2022 |
| THE Grass Centre Ltd | Administrative & support | 2018 |
| THE Great British Ground Screw Company Limited | Construction | 2013 |
| THE Green Mermaid Ltd | Hospitality | 2024 |
| THE Green Tea Room Washington Ltd | Hospitality | 2024 |
| THE Grey House (Durham) Management Company Limited | Households | 1994 |
| THE Ground's the Limit Ltd | Construction | 2021 |
| THE Hair Cove Limited | Other services | 2025 |
| THE Handymen Ltd | Construction | 2022 |
| THE Hard HAT Agency Ltd | Professional & scientific | 2024 |
| THE Hendleigh Group (Holdings) Ltd | Financial services | 2024 |
| THE History Gossip Limited | Information & communication | 2024 |
| THE Hive @ Haswell Limited | Hospitality | 2009 |
| THE Hive Group NE Limited | Administrative & support | 2019 |
| THE Honeybcompany Ltd | Manufacturing | 2014 |
| THE HOP Knocker Limited | Wholesale & retail | 2017 |
| THE House Hair, Beauty & Aesthetics Ltd | Real estate | 2022 |
| THE HR Exchange Limited | Professional & scientific | 2008 |
| THE Hypnotist Ltd | Arts & recreation | 2022 |
| THE INK Cell Ltd | Other services | 2014 |
| THE International Centre for Enterprise (Ice) Limited | Administrative & support | 2007 |
| THE JAM Tart Ltd | Wholesale & retail | 2016 |
| THE Land of Roots C.I.C. | Agriculture & fishing | 2001 |
| THE Laurels Child Care Company Ltd | Education | 2006 |
| THE Left Lane Media Limited | Information & communication | 2026 |
| THE Legion Strength and Fitness Ltd. | Other services | 2023 |
| THE Lens Factory (N.E) Ltd | Wholesale & retail | 2014 |
| THE Lions of London Ltd | Wholesale & retail | 2025 |
| THE Listening Company Ltd. | Education | 2016 |
| THE Marra Project Limited | Arts & recreation | 2024 |
| THE Mastermind Alliance Ltd | Professional & scientific | 2022 |
| THE Media Co (North East) Limited | Professional & scientific | 2019 |
| THE Mediterranean Gourmet Company Limited | Hospitality | 2017 |
| THE Moor PUB Company Limited | Hospitality | 2023 |
| THE Mortgage Shop (North East) Ltd | Financial services | 2004 |
| THE Motorhome Buying Company Ltd | Wholesale & retail | 2019 |
| THE Moven Group Limited | Financial services | 2021 |
| THE Nail Co (Heaton) Ltd | Other services | 2019 |
| THE North East Mobility Warehouse Ltd | Wholesale & retail | 2003 |
| THE North East Rebel Group Ltd | Hospitality | 2025 |
| THE North East Religious Learning Resources Centre Limited | Education | 1996 |
| THE Northern Integrative Health Practice Limited | Health & social care | 2009 |
| THE Old PIT Practice Limited | Health & social care | 2002 |
| THE Orchard House (Durham) Residents Management Company Limited | Real estate | 2001 |
| THE OX Events Ltd | Wholesale & retail | 2017 |
| THE Park House Company Durham Limited | Wholesale & retail | 2010 |
| THE Pastures Selby Management Company Limited | Real estate | 2026 |
| THE Pawsome Cat Cafe Ltd | Hospitality | 2019 |
| THE People's Podiatry Limited | Health & social care | 2024 |
| THE Printworks Durham Ltd | Real estate | 1991 |
| THE Pump House Restaurant Ltd | Hospitality | 2020 |
| THE Rams Langley Limited | Hospitality | 2024 |
| THE Red Lion of Plawsworth Limited | Hospitality | 2025 |
| THE Redeemed Christian Church of GOD - Living Grace Chapel Limited | Health & social care | 2013 |
| THE Rest Club Sourcing Limited | Real estate | 2025 |
| THE Roderick Crawford Consultancy Limited | Professional & scientific | 2024 |
| THE Royal Oak, Cornsay Colliery Ltd | Administrative & support | 2015 |
| THE Ruell Group Ltd | Professional & scientific | 2019 |
| THE Seoul Vibe Limited | Hospitality | 2025 |
| THE Shakespeare Tavern Ltd | Hospitality | 2025 |
| THE Sheymoss Ltd | Wholesale & retail | 2025 |
| THE SHY Unicorn Ltd | Wholesale & retail | 2022 |
| THE Siblings Group Ltd | Real estate | 2018 |
| THE Social Co Academy Limited | Education | 2021 |
| THE Social Co. Limited | Professional & scientific | 2015 |
| THE Social Return Co Limited | Extraterritorial | 2020 |
| THE Springfield Centre CIC | Administrative & support | 2006 |
| THE Stag’S PUB Company Ltd | Hospitality | 2026 |
| THE Station PUB Company Durham Ltd | Hospitality | 2024 |
| THE Street Coffee Co Cafe Limited | Hospitality | 2024 |
| THE Suffolk Script Limited | Arts & recreation | 2026 |
| THE Sugar Bowl Northeast C.I.C. | Education | 2024 |
| THE Systems LAB Ltd | Administrative & support | 2019 |
| THE Tax Box Ltd | Professional & scientific | 2016 |
| THE Teaching Room Ltd | Education | 2018 |
| THE TIN of Sardines Company Limited | Hospitality | 2016 |
| THE TIN of Sardines Roker Limited | Hospitality | 2020 |
| THE Top House Unicorn Co Limited | Hospitality | 2023 |
| THE Upside Down Club Ltd | Hospitality | 2025 |
| THE Vale Peakswater Holdings Limited | Real estate | 2023 |
| THE Vale Peakswater Ltd | Real estate | 2024 |
| THE Validation Company Europe Limited | Professional & scientific | 2006 |
| THE Village Optician (North East) Limited | Health & social care | 2007 |
| THE Weigh to Shop Ltd | Wholesale & retail | 2020 |
| THE Welding Development Centre Ltd. | Professional & scientific | 2018 |
| THE Witness Tree Limited | Real estate | 2023 |
| THE Woodman Durham Limited | Hospitality | 2022 |
| THE Wright FIX Property Maintenance Ltd | Construction | 2025 |
| Theclassiccouture Ltd | Wholesale & retail | 2019 |
| Thehauskollektiv Limited | Professional & scientific | 2019 |
| Thelma's House Ltd | Professional & scientific | 2015 |
| Theo James Recruitment Limited | Administrative & support | 2015 |
| Therapeeze Therapy Tools to Thrive Ltd | Administrative & support | 2020 |
| Thermal North Group Ltd | Construction | 2020 |
| Thermal Process Equipment (UK) Limited | Manufacturing | 2025 |
| Thermal Property Maintenance Ltd | Construction | 2023 |
| Thermalblade UK Limited | Wholesale & retail | 2014 |
| Thermo Systems Ltd | Construction | 2023 |
| THG Landlord Assist Ltd | Construction | 2025 |
| Thinford Nurseries Ltd | Wholesale & retail | 2020 |