| Turkish BBQ Bar and Grill Damla Ltd | Hospitality | 2025 |
| Turkish BBQ OZ Ltd | Hospitality | 2026 |
| Turkish Golden Scissors Two Ltd | Other services | 2023 |
| Turner Dooley Group Limited | Real estate | 2024 |
| Turners Commercial Investments Limited | Real estate | 2019 |
| Turners of Wirral Ltd | Wholesale & retail | 2022 |
| TVG Property Management Limited | Real estate | 2019 |
| Tvsl UK Ltd | Wholesale & retail | 2018 |
| TWA Group Limited | Professional & scientific | 2018 |
| TWA Logistics Ltd. | Real estate | 1996 |
| TWA Warehousing & Distribution Limited | Transport & logistics | 2002 |
| Twenty Five Investments Limited | Construction | 2020 |
| TWENTY4 Ideas Ltd | Professional & scientific | 2020 |
| Twentynine Assets Limited | Real estate | 2017 |
| Twentynine Infra Assets Limited | Financial services | 2020 |
| Twentysix-Group Limited | Professional & scientific | 2016 |
| Twin Lift Limited | Information & communication | 2023 |
| Twin Trade Limited | Extraterritorial | 1996 |
| Twins Engineering Ltd | Manufacturing | 2023 |
| TWJ Response Medical Limited | Health & social care | 2022 |
| Twnd Ltd | Health & social care | 2025 |
| Two Cans Digital Ltd | Wholesale & retail | 2019 |
| Two Oaks Willaston Ltd | Wholesale & retail | 2015 |
| Two Shoes Solutions Ltd | Information & communication | 2022 |
| Two Wheel Construction Ltd | Construction | 2022 |
| Tyres (Motor Trade) Limited | Wholesale & retail | 1963 |
| Tyrrells Catering Ltd | Hospitality | 2021 |
| Tywod Arian Management Company Limited | Households | 2006 |
| Ubique Risk Management Limited | Professional & scientific | 2011 |
| Uchechukwu Limited | Health & social care | 2025 |
| UDM Wholesale Limited | Wholesale & retail | 2022 |
| UDO Healthcare Limited | Health & social care | 2023 |
| UDS (NW) Ltd | Construction | 2024 |
| Ugly Duckling Boutique Ltd | Wholesale & retail | 2024 |
| UHP (UK) Limited | Construction | 1997 |
| UK Association of Tamils Limited | Other services | 2022 |
| UK Chemicals and Lubricants Ltd | Wholesale & retail | 2020 |
| UK Couriers Limited | Transport & logistics | 2020 |
| UK Fonton Culture&Education Exchange Co. Ltd | Information & communication | 2010 |
| UK Health Physics Services Ltd | Administrative & support | 2024 |
| UK HOG Roast and Catering Ltd | Hospitality | 2026 |
| UK Marine Consultants Limited | Transport & logistics | 2009 |
| UK Plug Plants Ltd | Wholesale & retail | 2025 |
| UK Ports and Logistics Limited | Professional & scientific | 2009 |
| UK Sunshine Limited | Real estate | 2012 |
| UK Unplugged CIC | Education | 2019 |
| Ukaap Ltd | Arts & recreation | 2025 |
| Ukcann Ltd | Wholesale & retail | 2019 |
| Ukled Ltd | Manufacturing | 2010 |
| Ukmalayalimatrimony.Com Limited | Information & communication | 2020 |
| Ultimate Response (Holdings) Limited | Professional & scientific | 1989 |
| Ultimate Warrior Challenges Ltd | Arts & recreation | 2020 |
| Ultra Property Co Ltd | Real estate | 2006 |
| Ultra Sips Ltd | Manufacturing | 2024 |
| Ultralow Ltd | Administrative & support | 2011 |
| Ultron Films Limited | Information & communication | 2024 |
| Unboxed.Together Ltd | Information & communication | 2025 |
| Uncaged Robot Limited | Information & communication | 2025 |
| Under Seventeen Driving Limited | Education | 2016 |
| Underdog Gaming Ltd | Wholesale & retail | 2017 |
| Underground Training Station Limited | Arts & recreation | 2009 |
| Underlining Beauty Limited | Other services | 2016 |
| Unicorp Ltd | Wholesale & retail | 2016 |
| Unify Commerce Limited | Wholesale & retail | 2021 |
| Unilente Ltd | Professional & scientific | 2016 |
| Unilever Global IP Limited | Administrative & support | 2020 |
| Uniqsol Ltd | Information & communication | 2023 |
| Unique Properties Northwest Ltd | Real estate | 2025 |
| Unity Wirral Ltd | Hospitality | 2025 |
| Universal Signs Limited | Construction | 2012 |
| Uniview Worldwide Limited | Information & communication | 1995 |
| Unlimited Retail Limited | Wholesale & retail | 2017 |
| Unlocked Fitness Ltd | Wholesale & retail | 2019 |
| Unrestricted Rope Access Limited | Professional & scientific | 2025 |
| Untangle Networks Limited | Information & communication | 2023 |
| UP Marquees Limited | Administrative & support | 2010 |
| Upartments Limited | Real estate | 2022 |
| UPH Grab Services Ltd | Water & waste | 2026 |
| Uppum Mulakum Limited | Hospitality | 2024 |
| Upton Hall School FCJ | Education | 2012 |
| Upton Phoenix Food Ltd | Hospitality | 2026 |
| Upya Ltd | Construction | 2025 |
| Urban Farm Cafe Limited | Hospitality | 2019 |
| Urban Habitats Consulting Limited | Professional & scientific | 2018 |
| Urban Sofas Ltd | Wholesale & retail | 2026 |
| Urban Space (Crawford Court) Limited | Construction | 2006 |
| Urban Space Ltd | Real estate | 1998 |
| Urbnglobal Limited | Administrative & support | 2017 |
| US Visa Express Ltd | Information & communication | 2024 |
| Use*Procurement Limited | Administrative & support | 2009 |
| Useful Social Limited | Professional & scientific | 2017 |
| UTD Logistics Ltd | Transport & logistics | 2005 |
| Utology Designs Limited | Manufacturing | 2021 |
| UTS Livewell Limited | Arts & recreation | 2025 |
| UZU Connect Limited | Information & communication | 2016 |
| V & B Cards Limited | Wholesale & retail | 2001 |
| V & DK Properties Ltd | Real estate | 2026 |
| V Balian Limited | Health & social care | 2024 |
| V J News and Wine Ltd | Wholesale & retail | 2026 |
| V&A Lettings Wirral Ltd | Real estate | 2024 |