| Tricord Companies Limited | Information & communication | 2003 |
| Trinity Construction Group Ltd | Construction | 2025 |
| Trinity Gardens Residents Limited | Households | 1990 |
| Trinity Plus Limited | Real estate | 2008 |
| Trinity Rescare UK Ltd | Health & social care | 2020 |
| Trinsic Collagen Limited | Manufacturing | 2019 |
| Triple One OCS Ltd. | Real estate | 2019 |
| Tripoint Automotive Ltd | Wholesale & retail | 2013 |
| Tristar TEN Limited | Extraterritorial | 2019 |
| True Haven Ltd | Wholesale & retail | 2026 |
| True Surveying Ltd | Administrative & support | 2023 |
| Truktronics Ltd | Manufacturing | 2022 |
| Trupath Innovations Limited | Wholesale & retail | 2016 |
| TS Car Valeting Limited | Wholesale & retail | 2023 |
| TSF IF Limited | Professional & scientific | 2024 |
| TSI Workspace Ltd | Wholesale & retail | 1996 |
| TSK Bread & Wine Limited | Wholesale & retail | 2025 |
| TTJ Solutions Ltd | Transport & logistics | 2018 |
| Tudor Mansions RTM Company Limited | Households | 2022 |
| Tulketh Lodge Southport RTM Company Limited | Households | 2004 |
| Tulua Ltd | Real estate | 2024 |
| Turkish Barber(Southport) Ltd | Other services | 2019 |
| Turkish Golden Barber Limited | Other services | 2023 |
| Turkish Golden CUT North West Limited | Other services | 2024 |
| Turkish Grill Palace Limited | Hospitality | 2019 |
| Turkish Hair CUT Southport Ltd | Other services | 2019 |
| Turnbacktimecosmetics Ltd | Administrative & support | 2017 |
| Turnkey Developments (NW) Ltd | Construction | 2018 |
| Twist Restaurants Limited | Hospitality | 2022 |
| Two Black Cats PUB Co Ltd | Hospitality | 2024 |
| Two Dogs Huyton Limited | Financial services | 2015 |
| Two Kites Property Ltd | Real estate | 2025 |
| Two Streets Limited | Households | 2017 |
| Twofound Ltd | Wholesale & retail | 2025 |
| Tyson Property Limited | Real estate | 2004 |
| U-Save Independant Consultants Ltd | Information & communication | 2001 |
| U7 Holdings Limited | Financial services | 2026 |
| UAB Group Limited | Health & social care | 2017 |
| UAD Catering Limited | Extraterritorial | 2018 |
| Uakondja Limited | Health & social care | 2016 |
| UBC Quality Build Ltd | Construction | 2023 |
| Udzamu Civic Ltd | Information & communication | 2026 |
| Uhmbrella Ltd | Professional & scientific | 2023 |
| UK Chain Limited | Wholesale & retail | 2020 |
| UK Coach Hire Ltd | Administrative & support | 2022 |
| UK Empire Tours and Productions Limited | Administrative & support | 2026 |
| UK Export & Import Limited | Financial services | 2019 |
| UK Goods Ltd | Wholesale & retail | 2026 |
| UK Hotcars Limited | Wholesale & retail | 2020 |
| UK Internet Consultants Ltd | Administrative & support | 2022 |
| UK Press Photography Limited | Extraterritorial | 2012 |
| UK Resin Flooring Ltd | Construction | 2020 |
| UK Secure Limited | Information & communication | 2011 |
| UK Trackway Hire Limited | Administrative & support | 2012 |
| UK Utilities Maintenance Limited | Construction | 2025 |
| UK Van Sales Limited | Wholesale & retail | 2024 |
| UK Windscreens (North West) Limited | Wholesale & retail | 2005 |
| Ukraine United CIC | Education | 2024 |
| Ultimo K Ltd. | Wholesale & retail | 2015 |
| Ultra Liquid Polymers Ltd | Wholesale & retail | 2017 |
| Uncharted Press Ltd. | Information & communication | 2014 |
| Undi (UK) Limited | Professional & scientific | 2022 |
| Uneeg Medical UK Ltd. | Wholesale & retail | 2020 |
| Uniguidance Worldwide Ltd | Education | 2023 |
| Union Chambers Developments Ltd. | Construction | 2024 |
| Union Street Bakehouse Ltd | Manufacturing | 2026 |
| Unique Convenience Limited | Wholesale & retail | 2020 |
| Unique Lifestyle Limited | Administrative & support | 2013 |
| Unique Touch Limited | Construction | 2025 |
| Unit 7 Management Limited | Other services | 2022 |
| Unite Investment Group Ltd | Real estate | 2020 |
| Unite Martial Arts Southport LLP | | 2015 |
| Unite Professionals Ltd | Other services | 2010 |
| Unite Property Ventures Ltd | Real estate | 2022 |
| United Anodisers (Batch) Limited | Financial services | 2011 |
| United Automation Holdings Limited | Financial services | 2017 |
| United Automation Limited | Manufacturing | 1992 |
| United JV Group Limited | Real estate | 2020 |
| United Kingdom Construction & Engineering Company Ltd | Construction | 2016 |
| United Legal Assistance Ltd. | Financial services | 2014 |
| United Resource Operators Consortium Limited | Professional & scientific | 2012 |
| United Solutions (North West) Ltd | Administrative & support | 2006 |
| Unity Quad Limited | Wholesale & retail | 2026 |
| Universal Attractions Limited | Arts & recreation | 2008 |
| Universal Plastics Trade Windows Limited | Construction | 2010 |
| Universal Rides Limited | Arts & recreation | 2013 |
| Unltd Education Ltd | Education | 2026 |
| Unsworthleisure Ltd | Hospitality | 2025 |
| Upscale Property Holdings Limited | Real estate | 2017 |
| Urban Castle Ltd | Construction | 2025 |
| Urban Cottage Ltd | Wholesale & retail | 2021 |
| Urban Lead Developments Ltd. | Construction | 2018 |
| Urban Mall Ltd | Wholesale & retail | 2025 |
| Urban Steel Fabrication Ltd | Manufacturing | 2024 |
| Uroc Media Limited | Other services | 2016 |
| Uroc Professional Services Limited | Other services | 2016 |
| Ursidi UK Ltd | Wholesale & retail | 2023 |
| V Albert Apartments Ltd | Hospitality | 2020 |
| V K Saba Wines Ltd | Wholesale & retail | 2021 |
| V Voicu Transport Ltd | Transport & logistics | 2016 |