| THE Link Tees Valley Ltd | Health & social care | 2015 |
| THE Little Soap House Ltd | Manufacturing | 2016 |
| THE Make a Scene Group Limited | Arts & recreation | 2022 |
| THE North East of England Process Industry Cluster Limited | Other services | 2002 |
| THE Old Barn Development Normanby Management Company Limited | Real estate | 2016 |
| THE Perfect Brownie Limited | Wholesale & retail | 2025 |
| THE Possibility Shed Ltd. | Administrative & support | 2025 |
| THE Prosecco Quarter Limited | Hospitality | 2018 |
| THE Redcar Pizza Factory Ltd | Hospitality | 2023 |
| THE Sandwich Station Limited | Wholesale & retail | 2021 |
| THE Seasons NE Ltd | Hospitality | 2026 |
| THE Secret Realm Scarborough Limited | Arts & recreation | 2021 |
| THE Spellbound Sanctuary Ltd | Manufacturing | 2025 |
| THE Sustainable Darkroom Ltd | Professional & scientific | 2022 |
| THE Tax Group Limited | Professional & scientific | 2023 |
| THE Tiger PUB and Stay Normanby Ltd | Hospitality | 2026 |
| THE Window Doctor (NE) Ltd | Construction | 2015 |
| THE Window Doctor North East Ltd | Construction | 2016 |
| THE Window Doctor Sales Ltd | Construction | 2018 |
| Thebrickyardbrotton Limited | Hospitality | 2025 |
| Thompson Metal Works Repairs Ltd | Manufacturing | 2023 |
| Thompson Property Investment(Ne) Ltd | Real estate | 2022 |
| TIL Death Bridal Ltd | Wholesale & retail | 2026 |
| Tillz Ltd | Hospitality | 2025 |
| Tinkerella JLC Ltd | Wholesale & retail | 2020 |
| Tipsy RIX Ltd | Hospitality | 2025 |
| Tjrnp Ltd | Construction | 2025 |
| TJS Properties North East Ltd | Real estate | 2024 |
| TLM Commercials Ltd | Arts & recreation | 2024 |
| Tmcl Services Ltd | Professional & scientific | 2007 |
| TNR Property Development Group Ltd | Real estate | 2022 |
| Todd Horne Property Ltd | Real estate | 2018 |
| Together on Purpose Ltd | Wholesale & retail | 2026 |
| TOM Rolfe Productions Limited | Arts & recreation | 2021 |
| Top CUT Redcar Ltd | Other services | 2023 |
| Top House PUB Company Limited | Hospitality | 2017 |
| Torn Property Developments Ltd | Real estate | 2020 |
| Torn Property Renovations Ltd | Construction | 2020 |
| Total Grounds Care Ltd | Administrative & support | 2018 |
| Town Clock Developments Limited | Construction | 2019 |
| TPI Lease Management Ltd | Real estate | 2022 |
| Trafford Medical Services Limited | Health & social care | 2016 |
| Trained by Todd Ltd | Education | 2020 |
| Transform UK Developments Ltd | Construction | 2016 |
| Tranteck Limited | Professional & scientific | 2022 |
| Trendfluencer Ltd | Professional & scientific | 2025 |
| Tricool Limited | Manufacturing | 1981 |
| Trinity Bay Properties Limited | Real estate | 2018 |
| Trinity House Consulting Ltd | Information & communication | 2022 |
| True Northern Solutions Ltd | Wholesale & retail | 2020 |
| Trusted Holdings North East Ltd | Financial services | 2021 |
| Trusted Plumbing and Heating Ltd | Construction | 2019 |
| Trusted Property Investment Limited | Real estate | 2018 |
| TS Elite Property Investments Ltd | Real estate | 2026 |
| TS South Ltd | Real estate | 2019 |
| Tudor Lodge Redcar Ltd | Real estate | 2024 |
| Turbogenix Limited | Professional & scientific | 2025 |
| Turning Point Property Ltd | Real estate | 2022 |
| Tweed Property North East Limited | Real estate | 2025 |
| Twelve Houses Limited | Households | 2024 |
| Twemlow Media Limited | Administrative & support | 2025 |
| Twiggy's Thirsk Limited | Arts & recreation | 2022 |
| Twoanths Ltd | Wholesale & retail | 2014 |
| Tyne Tees Mortar Limited | Construction | 2021 |
| UK PUB Management Ltd | Hospitality | 2023 |
| UK Quality Solutions Ltd | Professional & scientific | 2025 |
| Ultimate Voltage Ltd | Construction | 2022 |
| Uncrafted UK Ltd | Manufacturing | 2022 |
| Unique Leaflet Distribution Limited | Other services | 2017 |
| Unite Enterprises Limited | Arts & recreation | 2015 |
| Unite Martial Arts Academy C.I.C. | Arts & recreation | 2015 |
| United Food Academy Ltd | Education | 2019 |
| Universal Matter GBR Ltd | Manufacturing | 2010 |
| Universal Matter UK Limited | Financial services | 2023 |
| Upper Lias Limited | Other services | 2020 |
| Uprevail Events Ltd | Arts & recreation | 2024 |
| Urban Green Property Limited | Real estate | 2024 |
| US Total Group Ltd | Hospitality | 2023 |
| Valentino's Fusion Ltd | Hospitality | 2025 |
| Valued Properties Limited | Real estate | 1962 |
| Vasey's Wind Limited | Manufacturing | 2026 |
| VCA Property Ltd | Real estate | 2024 |
| Veitch Hair Ltd | Other services | 2025 |
| VG Vending Ltd | Wholesale & retail | 2025 |
| Vickers Access Limited | Construction | 2025 |
| Viola Homes Limited | Hospitality | 2015 |
| VIP Barbers Redcar Ltd | Other services | 2024 |
| Vivaldi Pizzeria Limited | Wholesale & retail | 2017 |
| VLC Promotions Ltd | Arts & recreation | 2024 |
| VN Development Ltd | Education | 2025 |
| Vqen Ltd | Transport & logistics | 2023 |
| W Lindsell Limited | Construction | 2025 |
| W P Duncan Limited | Construction | 2015 |
| W. S. Plastics Limited | Construction | 2013 |
| Walker Fire Safety Ltd | Public administration | 2023 |
| Warsett Ltd | Construction | 2007 |
| Wasteqhse Ltd | Water & waste | 2017 |
| WBA Solutions Limited | Information & communication | 2014 |
| WD Property Sourcing Ltd | Real estate | 2019 |
| WE ARE Cluck Ltd | Hospitality | 2023 |