| Twintec Projects Limited | Real estate | 2006 |
| Twist Agencies Limited | Professional & scientific | 2010 |
| Twist Distribution Ltd | Manufacturing | 2024 |
| Twist Properties Ltd | Construction | 2025 |
| Twistlink Limited | Manufacturing | 1996 |
| Two Ace Consultants Limited | Administrative & support | 2013 |
| Two Springs Properties Limited | Real estate | 2021 |
| Two Stripe Ltd | Wholesale & retail | 2026 |
| Two Two Holdings Ltd | Real estate | 2020 |
| Two Zero Property Ltd | Real estate | 2023 |
| TWX Golfwear Ltd | Wholesale & retail | 2025 |
| Ty-Gwyn Holdings Limited | Real estate | 1991 |
| TYC Solutions Ltd | Professional & scientific | 2014 |
| Tyke 2000 Limited | Wholesale & retail | 1999 |
| Tyke Petroleum (Castleford) Limited | Real estate | 1976 |
| Tyke Petroleum (Clifton) Limited | Wholesale & retail | 1976 |
| TYR Consultancy Limited | Professional & scientific | 2025 |
| Tyrianarchive Ltd | Wholesale & retail | 2026 |
| Ubelo Limited | Real estate | 2004 |
| Uc-Enterprise Limited | Hospitality | 2024 |
| Ufiit Electrical.Uk Ltd | Construction | 2026 |
| Ufiit Limited | Construction | 2019 |
| UI UX Ltd | Professional & scientific | 2015 |
| UK & Global Trade Ltd | Wholesale & retail | 2023 |
| UK Cardiologist Ltd | Health & social care | 2021 |
| UK Direct Supply Ltd | Wholesale & retail | 2026 |
| UK Esports League Ltd | Arts & recreation | 2023 |
| UK Freightways Ltd | Transport & logistics | 2015 |
| UK Hair Specialists Limited | Wholesale & retail | 2016 |
| UK Internet Solutions Ltd | Information & communication | 2004 |
| UK Pothole & Road Repairs Ltd | Construction | 2025 |
| UK Snap Ltd | Wholesale & retail | 2010 |
| UKK Transit Pro Ltd | Transport & logistics | 2025 |
| Uksl Trading UK Ltd | Wholesale & retail | 2022 |
| Ultimate Homecare Ltd | Health & social care | 2022 |
| Ultimate Season Products Ltd | Wholesale & retail | 2025 |
| Ultrafine Industrial Ltd | Wholesale & retail | 2013 |
| Umar Pharma Consultancy Ltd | Professional & scientific | 2026 |
| Umbravilia Marquees Limited | Other services | 1996 |
| Unchem'D Ltd | Manufacturing | 2025 |
| Unillam Limited | Real estate | 2023 |
| Unique Residential Improvement Limited | Administrative & support | 2025 |
| Unity Edge Ltd | Professional & scientific | 2022 |
| Universal Business Consulting Ltd | Professional & scientific | 2010 |
| Universpeed Ltd | Other services | 2018 |
| Unremarkable Ltd | Professional & scientific | 2023 |
| Unusual Imports Ltd | Wholesale & retail | 2024 |
| Unveils Vision Ltd | Wholesale & retail | 2021 |
| UP Hotel Agency Ltd | Administrative & support | 2014 |
| Uptown Property Limited | Real estate | 2003 |
| Urabura Budek Ltd | Transport & logistics | 2013 |
| Urban Estates (G.B.) Limited | Real estate | 2005 |
| Urban Machinery UK Limited | Extraterritorial | 2009 |
| Urbanset Homes Limited | Construction | 1994 |
| Ursan Electrical Limited | Construction | 2016 |
| Usjd SPV Limited | Real estate | 2025 |
| USK Logistics Ltd | Transport & logistics | 2018 |
| Utility Recoveries Specialists Limited | Professional & scientific | 2009 |
| Utility Vehicle Solutions Limited | Wholesale & retail | 2024 |
| Uvisit Ltd | Information & communication | 2021 |
| Uzin UTZ UK Ltd. | Wholesale & retail | 1992 |
| V-Code IT Solutions Limited | Information & communication | 2019 |
| V.A.Howe & Company Limited | Real estate | 1956 |
| V.Barbers (Rugby) Limited | Other services | 2026 |
| V.W.S Transport Limited | Construction | 2015 |
| V60 Motor Services Ltd | Wholesale & retail | 2023 |
| Vachhani Properties Ltd | Real estate | 2025 |
| Vacuum Interrupters Limited | Professional & scientific | 2005 |
| Valencia Waste (Landfill Restoration) Limited | Other services | 1997 |
| Valencia Waste Limited | Extraterritorial | 2025 |
| Valentin Cazacu Ltd | Transport & logistics | 2010 |
| Valetree Engineering Limited | Manufacturing | 2002 |
| Valkyrie Creations Ltd | Extraterritorial | 2025 |
| Valuetone Data Management Limited | Extraterritorial | 1996 |
| Van Spall Developments Ltd | Real estate | 2024 |
| Van Tastic Transport Ltd | Transport & logistics | 2024 |
| Vancea Transport Ltd | Administrative & support | 2016 |
| Vandrej Ltd | Transport & logistics | 2018 |
| Vanessa Gilbert SEN Consultant Ltd | Education | 2022 |
| Vangard Consultancy Ltd | Information & communication | 2023 |
| Vanguard Autoworks Ltd | Manufacturing | 2021 |
| Vanstone Consultancy Ltd | Professional & scientific | 2022 |
| Vantage Building Solutions Limited | Administrative & support | 2022 |
| Vantage Landscaping Solutions Limited | Administrative & support | 2022 |
| Vantage Security Systems Ltd | Construction | 2019 |
| Vanton DJ Pubs Ltd | Hospitality | 2023 |
| Vanusa Brazilian Hair and Beauty Ltd | Other services | 2018 |
| Vape R US Rugby Ltd | Wholesale & retail | 2026 |
| Vape Stop (Rugby) Limited | Wholesale & retail | 2026 |
| Varennes Developments Limited | Construction | 1985 |
| Varni Trading Ltd | Real estate | 2006 |
| Varun Ventures Limited | Real estate | 2022 |
| VAS Development Limited | Information & communication | 2021 |
| Vasstech Auto Services Limited | Wholesale & retail | 2009 |
| Vatman Courier Ltd | Other services | 2018 |
| Vaughan Reynolds Limited | Financial services | 2024 |
| Vayary Automotive Limited | Transport & logistics | 2025 |
| VC1 Properties Ltd | Real estate | 2013 |
| VCJ IT Consult Ltd | Information & communication | 2026 |
| VDI Software Limited | Information & communication | 2003 |