| Taskly Ltd | Information & communication | 2022 |
| TB Waste Management & Skip Hire Ltd | Water & waste | 2021 |
| Tech 1012 Limited | Construction | 2005 |
| TEM Engineering Ltd | Professional & scientific | 2020 |
| THE Cool Box NE Ltd | Hospitality | 2020 |
| THE Dachshund Shop Ltd | Manufacturing | 2025 |
| THE Gentry's Ltd | Hospitality | 2026 |
| THE HLF Group Limited | Wholesale & retail | 2017 |
| THE Thirsty Trio Limited | Wholesale & retail | 2025 |
| THE Towbar Company (South) Ltd | Wholesale & retail | 2003 |
| Thevars Ltd | Wholesale & retail | 2018 |
| Tight Lines NE Ltd | Wholesale & retail | 2022 |
| TIL the END Ltd | Manufacturing | 2026 |
| Time Crunch Fitness Ltd | Arts & recreation | 2024 |
| Tinuity Consultants Ltd | Real estate | 2024 |
| Tony Hart Qa/Sqa Consultant Limited | Professional & scientific | 2023 |
| Trauma Stop UK CIC | Wholesale & retail | 2020 |
| Travel Tyne Ltd | Transport & logistics | 2022 |
| Triple-T Drumming Ltd | Arts & recreation | 2014 |
| Tripleaaasupplements Ltd | Manufacturing | 2025 |
| Trkpubco Ltd | Hospitality | 2024 |
| TT Hire Ltd | Administrative & support | 2024 |
| TVA Property Ltd | Construction | 2026 |
| TVA Ventures Limited | Financial services | 2026 |
| Two Hills Holdings Limited | Financial services | 2023 |
| Two Way Electrical Limited | Construction | 2018 |
| Tyne Manufacturing Ltd | Manufacturing | 2022 |
| Tyne Valves Limited | Wholesale & retail | 2004 |
| Tynebridge Trading Ltd | Wholesale & retail | 2026 |
| Ujku Ltd | Hospitality | 2025 |
| UK Ventilation Limited | Manufacturing | 2005 |
| Unique Joinery Solutions North East Ltd | Construction | 2020 |
| Unique Property Developments (North East) Ltd | Construction | 2022 |
| Unique Transformations Limited | Construction | 2014 |
| UP North Leasing NE Ltd | Real estate | 2022 |
| Urban FRY & Desserts Ltd | Hospitality | 2026 |
| Valhalla Solutions Ltd | Financial services | 2018 |
| Village Store Winlaton Limited | Wholesale & retail | 2020 |
| Vinci Management Limited | Hospitality | 2017 |
| Vintage Poster Co Ltd | Wholesale & retail | 2022 |
| Virkex Ltd | Wholesale & retail | 2026 |
| W a Old & SON Limited | Transport & logistics | 2003 |
| WA Risk Management Ltd | Professional & scientific | 2024 |
| Wages Payroll Services Limited | Professional & scientific | 2021 |
| Walbottle Tyre Services Blaydon Ltd | Wholesale & retail | 2019 |
| Waste Away NE Ltd | Water & waste | 2026 |
| Way of the Website Limited | Information & communication | 2016 |
| West END Cabinet & Joinery Limited | Manufacturing | 2007 |
| What About US Ltd | Hospitality | 2024 |
| Whsm Ltd | Professional & scientific | 2025 |
| Wideopen Tyres & Exhausts Ltd | Wholesale & retail | 2002 |
| Wiggly T C.I.C. | Wholesale & retail | 2021 |
| Willow & Maine Ltd | Professional & scientific | 2018 |
| Winlanton Mill Village Store Ltd | Wholesale & retail | 2025 |
| Winlaton Galaxy Pizza Ltd | Hospitality | 2019 |
| Winlaton MOT Centre Limited | Wholesale & retail | 2013 |
| Witton Consultancy Services Ltd | Professional & scientific | 2018 |
| WJA Entertainments Ltd | Arts & recreation | 2024 |
| Wood Finishing Studios Ltd | Construction | 2024 |
| Wren Fabrication and Construction Limited | Professional & scientific | 2016 |
| Wrev Limited | Real estate | 2012 |
| Wright Lets and Property Ltd | Real estate | 2024 |
| Youth Sport Nutrition Ltd. | Manufacturing | 2015 |
| Zain & Zehna Limited | Information & communication | 2016 |
| Zero Zero Properties Ltd | Real estate | 2024 |
| ZIG ZAG Digital Ltd | Information & communication | 2021 |