| System One Signs Limited | Wholesale & retail | 2012 |
| Tafarn Y Nant Limited | Hospitality | 2014 |
| TAHIR4 Supermarket Ltd | Wholesale & retail | 2017 |
| Tang TAT Ltd | Hospitality | 2013 |
| Tate & Sons Ltd | Professional & scientific | 2023 |
| Taylor Made Code Limited | Information & communication | 2021 |
| Taylor Property Holdings Limited | Real estate | 2020 |
| Taylorautos Ltd | Wholesale & retail | 2019 |
| Tbcb Limited | Construction | 2018 |
| Tdat Holdings Limited | Professional & scientific | 2015 |
| Techminds Solutions Limited | Information & communication | 2024 |
| Technapple Ltd | Wholesale & retail | 2025 |
| Technoticia Ltd | Wholesale & retail | 2025 |
| Telford Resourcing Ltd | Professional & scientific | 2023 |
| TFC 2020 Limited | Hospitality | 2019 |
| THE Adolescent and Children's Trust | Health & social care | 1993 |
| THE Aesthetics Club NW Ltd | Other services | 2025 |
| THE Afterglow Tanning & Beauty Rhyl Ltd | Other services | 2025 |
| THE Archetype (Accountants) Ltd | Professional & scientific | 2003 |
| THE Buddha Trading Company Limited | Hospitality | 2013 |
| THE Clean Workplace Ltd | Administrative & support | 2019 |
| THE Coaching Couch Limited | Information & communication | 2003 |
| THE Company for Gifts Limited | Extraterritorial | 2003 |
| THE Cove Rhyl Ltd | Hospitality | 2019 |
| THE Dog Spa Grooming Limited | Wholesale & retail | 2026 |
| THE Dove at Prestatyn Limited | Arts & recreation | 2018 |
| THE Dragon Hotel and Restaurant Ltd | Hospitality | 2006 |
| THE END Hair Design Limited | Other services | 2003 |
| THE Games Exchange Limited | Wholesale & retail | 2004 |
| THE Home Interior Store Ltd | Wholesale & retail | 2021 |
| THE Kinmel Bay and Towyn Community Association Limited | Health & social care | 1997 |
| THE Little Flowermonger Limited | Wholesale & retail | 2023 |
| THE Nelson PUB NW Ltd | Hospitality | 2026 |
| THE North Rhyl Ltd | Hospitality | 2013 |
| THE Peoples Ferry Ltd. | Transport & logistics | 1995 |
| THE Pierce Corporation Limited | Information & communication | 2009 |
| THE Rhyl Little Theatre Limited | Education | 2001 |
| THE Swim Club Ltd | Education | 2022 |
| THE TEE Web Group Ltd | Information & communication | 2023 |
| THE Training Method Ltd | Arts & recreation | 2021 |
| THE Trust for Sick Children in Wales | Health & social care | 1987 |
| THE Upvc Outlet Limited | Construction | 2019 |
| THE Victory Club (Rhyl) Limited | Hospitality | 2015 |
| Thebod@Dyserth Limited | Hospitality | 2021 |
| Then Print (UK) Limited | Manufacturing | 2015 |
| Thepotholedoctors Limited | Manufacturing | 2019 |
| Thermtek Ltd | Construction | 2024 |
| Things to DO North Wales Limited | Administrative & support | 2020 |
| Thomas Tree & Landscape Services Ltd | Professional & scientific | 2024 |
| Thompson's Properties Limited | Real estate | 2013 |
| Thornton Motor Services Ltd | Wholesale & retail | 2025 |
| Thorpe Design & Technologies Limited | Manufacturing | 2004 |
| Thrive Clinical Management Ltd | Administrative & support | 2026 |
| TIC, Theatre in the Community Ltd | Other services | 2021 |
| Ticky’S Choice Ltd | Wholesale & retail | 2024 |
| Tinker Holdings LLP | | 2023 |
| Tiny Door Interactive Limited | Information & communication | 2023 |
| Titan Bath Company Ltd | Manufacturing | 2019 |
| TJS Contracts Limited | Construction | 2016 |
| Top Fade Barbers Rhuddlan Ltd | Other services | 2025 |
| Top Mortgage Solutions Limited | Financial services | 2015 |
| Total Utilities Limited | Construction | 2006 |
| Tothezel Limited | Health & social care | 2023 |
| Trade Kitchens 4 YOU Ltd | Wholesale & retail | 2016 |
| Treen Electrical Limited | Construction | 2021 |
| TRM Consulting Ltd | Information & communication | 2026 |
| Ttamer-Collection Ltd | Other services | 2018 |
| Tugboat Trading Ltd | Wholesale & retail | 2022 |
| TVB Renewables Ltd | Energy | 2019 |
| U.K Elite Corner Ltd | Real estate | 2018 |
| UC BED Bargains Limited | Wholesale & retail | 2012 |
| UK Entertainment Limited | Information & communication | 2007 |
| UK Things to DO Limited | Administrative & support | 2020 |
| Ultimate Race Developments Ltd | Arts & recreation | 2016 |
| Un.Con.Fused Digital Ltd | Information & communication | 2022 |
| Unifirst Global Services Ltd | Extraterritorial | 2025 |
| UPD Decking Limited | Construction | 2020 |
| Upvc Shop Ltd | Wholesale & retail | 2025 |
| Urdd Cyfeillion, Ysbyty Glan Clwyd League of Friends Limited | Administrative & support | 1998 |
| Urfa 63 Ltd | Hospitality | 2026 |
| Utility Care (NW) Limited | Construction | 2015 |
| V2 Build Pro Ltd | Construction | 2024 |
| Vainapparel Ltd | Wholesale & retail | 2018 |
| Vale D&G Ltd | Construction | 2025 |
| Vale Road Car Wash Ltd | Other services | 2018 |
| VBM Convenience Store Limited | Wholesale & retail | 2021 |
| Victoria's Beauty Clinic Ltd. | Professional & scientific | 2020 |
| Vinteage Ltd | Hospitality | 2015 |
| Virtual Office North Wales Ltd | Professional & scientific | 2023 |
| Vivante Outdoor Ltd | Extraterritorial | 2023 |
| VM Family Asian Foods UK Ltd | Wholesale & retail | 2026 |
| VM Indian Limited | Hospitality | 2022 |
| Voel Coaches Limited | Transport & logistics | 1996 |
| Voel Holidays Limited | Administrative & support | 1996 |
| VOW to Love Weddings Ltd | Professional & scientific | 2024 |
| VY Transport Ltd | Transport & logistics | 2025 |
| W F B Ltd | Manufacturing | 2012 |
| WAG Property Ltd | Households | 2023 |
| Wales Best Guides Enterprises Limited | Administrative & support | 2021 |
| Walnut Hotel (Birmingham) Limited | Construction | 2013 |