| THE Beehive (Sedgeletch) Ltd | Hospitality | 2023 |
| THE Burn Body Shop Ltd | Wholesale & retail | 2024 |
| THE Cleaning Label Limited | Administrative & support | 2026 |
| THE Conservatory Roof Company Ltd | Construction | 2013 |
| THE Deli on the River Ltd | Hospitality | 2025 |
| THE Domestic Appliance Company Limited | Other services | 2005 |
| THE Double Glazing Repair MAN (NE) Ltd | Construction | 2025 |
| THE Ethical Renewable Company Ltd | Construction | 2010 |
| THE Farmers Mistress Limited | Hospitality | 2016 |
| THE Hair Doctor Firat Ltd | Other services | 2020 |
| THE Highfield Hotel Limited | Hospitality | 2015 |
| THE Jephy Group Ltd | Financial services | 2023 |
| THE Many Hats Racket Ltd | Arts & recreation | 2019 |
| THE Mozzarella NE Ltd | Hospitality | 2025 |
| THE Mythical Market Ltd | Manufacturing | 2025 |
| THE Nest Community Wellbeing CIC | Health & social care | 2025 |
| THE Oak Cartmel Limited | Hospitality | 2021 |
| THE Old Foundry Residents Management Company Limited | Households | 2025 |
| THE Opportunity Room CIC | Education | 2026 |
| THE Pizza Shop (DH4) Limited | Hospitality | 2022 |
| THE Place Leisure Ltd | Hospitality | 2020 |
| THE Sound Museum Global Limited | Arts & recreation | 2025 |
| THE Sound Rituals Ltd | Health & social care | 2025 |
| THE Spicy Balti Ltd | Hospitality | 2023 |
| THE Sugar Ritual Ltd | Other services | 2025 |
| THE Tortured Apple Cider Company Ltd | Manufacturing | 2023 |
| THE Vintage & Modern RUG Co Ltd | Wholesale & retail | 2015 |
| THE Walled Garden (Fencehouses) Management Company Limited | Real estate | 2012 |
| THE Wellness Studio Hub CIC | Education | 2025 |
| THE Wind Academy Ltd | Education | 2023 |
| THE Winery (Houghton LE Spring) Limited | Wholesale & retail | 2014 |
| THE Wise+ CIC | Health & social care | 2023 |
| Therma Point Air Conditioning and Refrigeration Ltd | Professional & scientific | 2019 |
| Think English Limited | Education | 2020 |
| Thirteen Fifty Eight Ltd | Professional & scientific | 2025 |
| Thomas Watson Ltd | Real estate | 2017 |
| Thompson Brothers & Sons Funeral Directors Ltd | Other services | 2020 |
| Thornley Road Service Station Limited | Wholesale & retail | 2004 |
| Threedimensionaldesigns Ltd | Manufacturing | 2023 |
| Thugz Vehicle Transportation Limited | Transport & logistics | 2024 |
| Thurcroft Communications Ltd | Information & communication | 2019 |
| Thurgood Logistics Ltd | Transport & logistics | 2025 |
| Thwaites Entertainments Limited | Real estate | 1975 |
| Tiah Lighting Ltd | Wholesale & retail | 2023 |
| Tigerwolf Limited | Information & communication | 1998 |
| Timber Mouldings Direct Limited | Wholesale & retail | 2024 |
| Tinas Travel Deals Ltd | Administrative & support | 2017 |
| Tinning Media Ltd | Information & communication | 2019 |
| Titan Supreme Plumbing Ltd | Construction | 2026 |
| TK Construction and Fire Doors Ltd | Construction | 2023 |
| Tommy's Field Allotments Limited | Extraterritorial | 2017 |
| Topvila Property Limited | Real estate | 2025 |
| Total Project Procurement Limited | Administrative & support | 2014 |
| Toys Upon Toys Ltd | Wholesale & retail | 2022 |
| TPL Solutions Limited | Administrative & support | 2010 |
| Traffic Management NE Ltd | Construction | 2022 |
| Transform Loft Solutions Limited | Construction | 2015 |
| Trevor Hunter Electrical Ltd | Manufacturing | 2016 |
| Tri-Cal Limited | Manufacturing | 1994 |
| Triangle Allotments Association Limited | Other services | 2023 |
| TRIBLEY101 Ltd | Wholesale & retail | 2025 |
| Trinity Property Services (Northeast) Limited | Real estate | 2003 |
| Triple M Garage Ltd | Wholesale & retail | 2026 |
| True North Trades Community Interest Company | Manufacturing | 2019 |
| True Path Support Services Limited | Health & social care | 2026 |
| TT Renewables Ltd | Professional & scientific | 2024 |
| TT Sandyford Limited | Extraterritorial | 2022 |
| TWA Consulting Group Ltd | Professional & scientific | 2024 |
| TWA Global Resourcing Ltd | Professional & scientific | 2024 |
| TWA Power Ltd | Administrative & support | 2025 |
| Twinkles Candles Ltd | Manufacturing | 2026 |
| Twisted Chick Ltd | Hospitality | 2022 |
| TY Wilkinson Logistics Ltd | Transport & logistics | 2025 |
| Tyrens Safety Limited | Professional & scientific | 2026 |
| Uflux Ltd | Construction | 2023 |
| UK Direct Business Solutions (Group) Limited | Energy | 2019 |
| UK Direct Business Solutions Limited | Energy | 2017 |
| UK Independent Medical Services Limited | Professional & scientific | 2002 |
| UK Warranty Limited | Financial services | 2011 |
| Unified Software Limited | Information & communication | 2003 |
| Uniq Properties Ltd | Information & communication | 2022 |
| United Hygiene & Catering Equipment Ltd | Wholesale & retail | 2015 |
| Unitised Fabrications Limited | Manufacturing | 2016 |
| Uphold Consulting Limited | Professional & scientific | 2024 |
| Upstep Project CIC | Health & social care | 2026 |
| Urban Pizza Ltd | Hospitality | 2026 |
| Vacant Property Experts Ltd | Administrative & support | 2024 |
| Vamos Engineering Ltd | Professional & scientific | 2022 |
| Vanburgh Limited | Extraterritorial | 1987 |
| Vape Flavours Ltd | Wholesale & retail | 2024 |
| Vertex Computer Solutions Limited | Information & communication | 2018 |
| Victor NE Ltd | Construction | 2026 |
| Victoria Dales Coaching Ltd | Arts & recreation | 2018 |
| Villa Renovations Ltd | Construction | 2025 |
| Village Garage Whitley Bay Limited | Wholesale & retail | 2017 |
| Village Spice 40 Ltd | Hospitality | 2019 |
| Village Spice DH4 Ltd | Hospitality | 2023 |
| Village Spice Houghton Ltd | Hospitality | 2025 |
| Vine Limited | Wholesale & retail | 2007 |
| Vision Aversion Ltd | Professional & scientific | 2019 |