| Tettero Property Renovations Limited | Construction | 2025 |
| THE Canteen Bar & Kitchen Ltd | Hospitality | 2020 |
| THE Family Tree Group Limited | Health & social care | 2024 |
| THE Fold Brewing Co. Limited | Manufacturing | 2022 |
| THE Heart of RAW Limited | Other services | 2019 |
| THE Home Flooring Store Limited | Professional & scientific | 2020 |
| THE Queens Head - Shildon Ltd | Hospitality | 2023 |
| THE Shake Shack Cafe Ltd | Hospitality | 2021 |
| THE Shildon Heritage Alliance CIC | Professional & scientific | 2019 |
| Three Arches Properties Limited | Real estate | 2024 |
| Three Sister Property Co Limited | Real estate | 2022 |
| Tierr One Limited | Wholesale & retail | 2024 |
| TNE Property Co. Ltd | Real estate | 2024 |
| TNE Surveying Co. Ltd | Professional & scientific | 2023 |
| Toleman Holdings Ltd | Financial services | 2024 |
| TOM Time Transport Ltd | Transport & logistics | 2021 |
| Top UK CUT Ltd | Other services | 2022 |
| TRC Autos Ltd | Wholesale & retail | 2024 |
| TRC Vehicle Leasing Ltd | Administrative & support | 2025 |
| Ubique Utility Solutions Ltd | Water & waste | 2024 |
| UK Client Management Ltd | Professional & scientific | 2025 |
| UNO Pizza (NE) Limited | Hospitality | 2023 |
| Used Machine Tools Limited | Wholesale & retail | 2024 |
| UV Tanning Limited | Other services | 2024 |
| Vantage Games Limited | Information & communication | 2026 |
| Verag Engineering Ltd | Manufacturing | 2025 |
| Verstand Consulting Ltd | Information & communication | 2025 |
| VFS Coaching Ltd | Health & social care | 2024 |
| Vibrant Construction Ltd | Construction | 2022 |
| VJ2 | Professional & scientific | 2013 |
| Voidservices Limited | Health & social care | 2007 |
| W. Booth Plumbing & Heating Limited | Construction | 2020 |
| Wanted Skip Hire Ltd | Water & waste | 2021 |
| Wanted Wood Recycling Ltd | Water & waste | 2018 |
| Waxx Barbershop Ltd | Other services | 2025 |
| Whitfield Flooring Limited | Wholesale & retail | 2024 |
| Whitfield Flooring Portrack Limited | Wholesale & retail | 2024 |
| Whitfield Flooring Team Valley Limited | Wholesale & retail | 2024 |
| Wilkinson's Site Services Ltd | Construction | 2024 |
| Wilsonart Limited | Manufacturing | 2012 |
| WRA Enterprises Ltd | Administrative & support | 2018 |
| Xhulio Logistics Ltd | Transport & logistics | 2025 |
| Xpress Stores Ltd | Wholesale & retail | 2008 |
| Xtreme Bodyworx Ltd | Wholesale & retail | 2022 |