| THE Landscaping Shop Ltd | Extraterritorial | 2017 |
| THE Lowry Fabrications Company Ltd | Manufacturing | 2024 |
| THE MAE Murray Foundation | Other services | 2014 |
| THE Music Yard (N.I.) CIC | Education | 2017 |
| THE Music Yard Ltd | Education | 2014 |
| THE Pavilion Residential Management Company Limited | Households | 2022 |
| THE Rinkha Limited | Extraterritorial | 2005 |
| THE Rock Stone Masonry Ltd | Manufacturing | 2025 |
| THE Stables (N.I.) Ltd | Hospitality | 2015 |
| THE Studio @ Perfections Limited | Other services | 2016 |
| THE Toastie Joint Limited | Hospitality | 2025 |
| THE Townsend Collection Ltd | Real estate | 2026 |
| THE WEE Card Shop Ltd | Wholesale & retail | 2025 |
| Thinksmart Global Ltd | Wholesale & retail | 2019 |
| Thompsons Lighting Ltd | Wholesale & retail | 2013 |
| Thrift Limited | Professional & scientific | 2007 |
| TM Media Group Ltd | Information & communication | 2022 |
| Tokuneko UK Limited | Professional & scientific | 2025 |
| Tomrj Ltd | Professional & scientific | 2018 |
| Topping Meats Ltd | Wholesale & retail | 2019 |
| Torbitts Ltd | Wholesale & retail | 2012 |
| Tranzformix Consulting Limited | Professional & scientific | 2001 |
| Trifts Catalyst Limited | Professional & scientific | 2025 |
| Triple Crown Tips UK Ltd | Wholesale & retail | 2024 |
| Trocan Trucks Ltd | Wholesale & retail | 2025 |
| TS Airsoft.Com Ltd | Wholesale & retail | 2024 |
| TSM (N.I.) Ltd | Manufacturing | 2026 |
| TT Tiling Ltd | Construction | 2026 |
| Tureagh Properties Ltd | Construction | 2026 |
| Tuskar Rock Limited | Manufacturing | 2015 |
| Twbh Ltd | Real estate | 2024 |
| Ucandu Food Ltd | Hospitality | 2025 |
| UEL O'Neill Ltd | Construction | 2013 |
| Upkeep (N.I.) Limited | Construction | 2021 |
| Upkeep NI Facilities Management Ltd | Construction | 2025 |
| Uplift N.I. Limited | Arts & recreation | 2024 |
| UR Developments (Erskine) Ltd | Construction | 2017 |
| UR Property Ltd | Real estate | 2010 |
| URP Loughview Ltd | Real estate | 2026 |
| USA Car Valeting & Wash Centres Ltd | Professional & scientific | 2013 |
| USA Car Wash (Bangor) Ltd | Wholesale & retail | 2013 |
| USA Car Wash (Ladas) Limited | Wholesale & retail | 2016 |
| USA Car Wash (N.I.) Ltd | Other services | 2016 |
| USA Car Wash (Shore Road) Ltd | Wholesale & retail | 2018 |
| USA Car Wash Fortwilliam Ltd | Wholesale & retail | 2024 |
| USA Nails Larne Ltd | Other services | 2025 |
| Valentia Enterprises 2021 Ltd | Real estate | 2021 |
| Valentia Enterprises Limited | Real estate | 2018 |
| Van ES Ltd | Wholesale & retail | 2005 |
| Vant Event Ltd | Construction | 2025 |
| Vera Letharna Ltd | Construction | 2025 |
| VSL Enterprises Ltd | Wholesale & retail | 2017 |
| W Mckay & Sons Ltd | Wholesale & retail | 2007 |
| WA Aero Ltd | Manufacturing | 2019 |
| Walkapaws Ltd | Other services | 2014 |
| Wandsworth Developments Limited | Construction | 2002 |
| Warren Electrical & Mechanical Ltd | Extraterritorial | 2022 |
| Watson Group Holdings Limited | Financial services | 2023 |
| Watson Industries Limited | Professional & scientific | 2021 |
| Watson Seasonings Ltd | Wholesale & retail | 2022 |
| Wattleseed Limited | Real estate | 2011 |
| WB (N.I.) Ltd | Wholesale & retail | 2023 |
| WE Rock IT Ltd | Professional & scientific | 2024 |
| Wear IT OUT Limited | Wholesale & retail | 2021 |
| Wear IT OUT Online Ltd | Wholesale & retail | 2021 |
| Web of Worlds Ltd | Wholesale & retail | 2025 |
| Wellington Bistro (N.I.) Ltd | Agriculture & fishing | 2013 |
| Wethinkit Limited | Information & communication | 2018 |
| Wexford Strategies Ltd | Professional & scientific | 2025 |
| WG Racing Ltd | Arts & recreation | 2023 |
| Whitecliff Inn Limited | Hospitality | 2023 |
| Wigglypegs Ltd | Manufacturing | 2017 |
| Wilgan Properties Ltd | Real estate | 2023 |
| Wilkham Services External Cleaning Ltd | Administrative & support | 2023 |
| William Mccluskey Ltd | Professional & scientific | 2014 |
| Willows Property & Engineering Ltd | Real estate | 2026 |
| Wilsons Catering Ltd | Wholesale & retail | 2025 |
| Wilsons Healthcare Ltd | Health & social care | 2025 |
| With Purpose Ltd | Information & communication | 2020 |
| WJ Solutions Ltd | Professional & scientific | 2024 |
| WJW Services Ltd | Manufacturing | 2025 |
| WNR Electrical (N.I.) Ltd | Construction | 2021 |
| Wonder Arts and Consultancy Limited | Arts & recreation | 2019 |
| Woodsides Fashions (Lisburn) Ltd | Wholesale & retail | 2015 |
| Woodsides Fashions Ltd | Wholesale & retail | 2015 |
| WPC (N.I.) Ltd | Manufacturing | 2019 |
| Y4RDS Ltd | Wholesale & retail | 2025 |
| Your Befriender Ltd | Health & social care | 2025 |
| Zaro Holdings Limited | Real estate | 2023 |
| ZR Play Ltd | Manufacturing | 2025 |