| Triple H Services Limited | Administrative & support | 1997 |
| Trqs Ltd | Professional & scientific | 2023 |
| TRS Invest Corp Ltd | Real estate | 2022 |
| TRS Plastics Limited | Construction | 2017 |
| TRS Training Limited | Education | 2012 |
| Trucker Girl Limited | Transport & logistics | 2026 |
| True Blue Developments Ltd | Real estate | 2025 |
| True Flow Plumbing and Heating Ltd | Construction | 2026 |
| Trusty Platform Ltd | Information & communication | 2021 |
| Truth Hair and Beauty Academy Ltd | Education | 2020 |
| TSG Joinery Ltd | Construction | 2025 |
| Tslifting Ltd | Construction | 2026 |
| TSM19 Ltd | Real estate | 2020 |
| TSP SAI Stores Ltd | Wholesale & retail | 2021 |
| TSU Engineering & Construction Ltd | Construction | 2025 |
| Ttmsengineeringservices Ltd | Professional & scientific | 2023 |
| TTS Contract Services Ltd | Construction | 2020 |
| Tuffley Healthcare Limited | Wholesale & retail | 2011 |
| Tulip Aesthetics & Healthcare Ltd | Health & social care | 2023 |
| Tumbles Academy Ltd | Education | 2018 |
| Tupton Healthcare Limited | Wholesale & retail | 2016 |
| Turbotruck Transport Limited | Transport & logistics | 2025 |
| Turf Farm Services Ltd | Agriculture & fishing | 2017 |
| Turfco Ltd | Professional & scientific | 2022 |
| Turfcouk Landscaping Ltd | Administrative & support | 2018 |
| TW2NTY THR3E Ltd | Other services | 2025 |
| Twenty Eight Holdings NW Ltd | Real estate | 2026 |
| Twilight Systems Limited | Construction | 2017 |
| TWJ Support Services Limited | Other services | 2025 |
| Two Bros ORM Ltd | Hospitality | 2023 |
| Two Brothers Coffee Ltd | Hospitality | 2017 |
| Two Gracie’S Limited | Health & social care | 2024 |
| Two Horizons Consulting Ltd | Professional & scientific | 2025 |
| TY14 Ltd | Other services | 2022 |
| Tyler Murphy Ltd | Construction | 2025 |
| Tyrecare (St.Helens)Limited | Wholesale & retail | 1972 |
| Tyrecyber Limited | Professional & scientific | 2000 |
| Tyreseal Distribution Limited | Wholesale & retail | 2006 |
| Tyreseal Wholesale Limited | Wholesale & retail | 2007 |
| U-Spec Insulation Limited | Manufacturing | 2019 |
| Uberglow UK Ltd | Manufacturing | 2018 |
| UBV Limited | Administrative & support | 2020 |
| UK Bidco Limited | Financial services | 2018 |
| UK Fleet Services Ltd | Transport & logistics | 2021 |
| UK Mediation Services Ltd | Administrative & support | 2024 |
| UK Nishikigoi Ltd | Wholesale & retail | 2008 |
| UK Occasion Limited | Hospitality | 2021 |
| UK Salt Gritting Company Ltd | Other services | 2004 |
| Ukes Services Ltd | Administrative & support | 2025 |
| UKEVENTS4U Ltd | Arts & recreation | 2023 |
| Ukeveryday Ltd | Administrative & support | 2022 |
| Uniall Group Limited | Wholesale & retail | 2017 |
| Unifrax (Derby) Limited | Manufacturing | 1983 |
| Unifrax Emission Control Europe Ltd | Manufacturing | 1986 |
| Unifrax Europe Holdings Limited | Professional & scientific | 2003 |
| Unifrax Limited | Manufacturing | 2000 |
| Unifrax UK Holdco Limited | Professional & scientific | 2000 |
| Unique Tiling Liverpool Ltd | Construction | 2026 |
| Unirehoboth Ltd | Real estate | 2025 |
| United Pharmaceuticals Ltd | Wholesale & retail | 2016 |
| United Trades Group Ltd | Construction | 2025 |
| Unity Fundraising Limited | Administrative & support | 2024 |
| Unity Lettings Ltd | Real estate | 2017 |
| Universal Tanker Group Limited | Administrative & support | 2013 |
| Unrestricted Limited | Health & social care | 2025 |
| Unriva Group Ltd | Professional & scientific | 2025 |
| Unriva Solutions Ltd | Construction | 2025 |
| UP Convenience Store Limited | Wholesale & retail | 2017 |
| UP Driver Training Ltd | Education | 2026 |
| Uplix Ltd | Wholesale & retail | 2025 |
| Upper Springfield Ltd | Administrative & support | 2022 |
| UPS and Downs Build Ltd | Construction | 2021 |
| Upton Rocks Healthcare Limited | Construction | 2016 |
| Urban Concepts Limited | Manufacturing | 2020 |
| Urban Sparx Limited | Construction | 2022 |
| Urban Welding Ltd | Construction | 2025 |
| Urbanwalk Streetwear Ltd | Wholesale & retail | 2025 |
| Urgent Care North West Ltd | Health & social care | 2016 |
| V&L Retail Ltd | Administrative & support | 2016 |
| V&T Construct Ltd | Construction | 2023 |
| V6 Property Management Ltd | Real estate | 2022 |
| VAL Design Beds Ltd | Manufacturing | 2025 |
| VAL Hygiene Ltd | Financial services | 2020 |
| Valentine.Leisure Ltd | Hospitality | 2026 |
| Valet Centre North West & Pro Cleaning Ltd | Other services | 2013 |
| Value Sphere Limited | Wholesale & retail | 2021 |
| Vamp Hairdressing Limited | Other services | 2004 |
| Van Garage Ltd | Wholesale & retail | 2024 |
| Vanchem Ltd | Professional & scientific | 2024 |
| Vans Northwest Ltd | Wholesale & retail | 2006 |
| Vape Central Ltd | Wholesale & retail | 2018 |
| Vape Kingdom UK Ltd | Wholesale & retail | 2018 |
| Vapebox Ltd | Wholesale & retail | 2024 |
| Vapour Grow Ltd | Agriculture & fishing | 2021 |
| Vapours Daily Ltd | Wholesale & retail | 2022 |
| VAR Retail Ltd | Wholesale & retail | 2022 |
| Varey Therapy Ltd | Health & social care | 2023 |
| Vasilache Trading Services Ltd | Transport & logistics | 2026 |
| Vectradb Consulting Ltd | Wholesale & retail | 2026 |
| Veespo Limited | Information & communication | 2011 |