| Unique Saree UK Ltd | Wholesale & retail | 2019 |
| Unique Scarf Limited | Wholesale & retail | 2019 |
| Unisex Barbar Saloon Limited | Other services | 2025 |
| Unisia Limited | Administrative & support | 2025 |
| United Construction London Ltd | Construction | 2018 |
| United Home London Ltd | Real estate | 2025 |
| United Motors London Ltd | Wholesale & retail | 2025 |
| United Pashtun Society | Health & social care | 2019 |
| United Property Services Limited | Construction | 2019 |
| United Roofing London Ltd | Construction | 2024 |
| United Vista Ltd | Administrative & support | 2023 |
| Unity Oral Healthcare Ltd | Health & social care | 2026 |
| Unity Sterling Ltd | Real estate | 2026 |
| Unity Wholesale Ltd | Wholesale & retail | 2025 |
| Universal Film Studios Limited | Information & communication | 2022 |
| Universal Fruit & VEG Ltd | Wholesale & retail | 2025 |
| Universal House Limited | Real estate | 2006 |
| Universal Import Export UK Ltd | Wholesale & retail | 2020 |
| Universal Imports & Exports PVT Ltd | Wholesale & retail | 2022 |
| Universal Links London Ltd | Wholesale & retail | 2025 |
| Universal Lubricants (UK) Limited | Wholesale & retail | 2010 |
| Universal Mobilezone Limited | Other services | 2018 |
| Unmaan Healthcare Limited | Wholesale & retail | 2018 |
| Unscammed AI (UK) Ltd | Information & communication | 2025 |
| Upgrade Constructions London Ltd | Construction | 2018 |
| Upgrade Events Limited | Real estate | 2003 |
| Upgrade Haulage Solutions Ltd | Transport & logistics | 2025 |
| Upgraded Enterprises Ltd | Health & social care | 2013 |
| Uppal & Sons Properties Ltd | Real estate | 2026 |
| Uppal and SON Limited | Transport & logistics | 2021 |
| Uppal Brar Ventures Ltd | Financial services | 2026 |
| Uppal Kashmir Limited | Transport & logistics | 2020 |
| Uppal Procurement Limited | Wholesale & retail | 2025 |
| Uppal Property Estates Ltd | Construction | 2025 |
| Upton Mews Ltd | Real estate | 2021 |
| Upton Park Homes (2) Ltd | Real estate | 2023 |
| Upton Park Homes Hold Co Ltd | Real estate | 2024 |
| Upton Park Homes Ltd | Real estate | 2020 |
| UR Shop Motors Limited | Wholesale & retail | 2020 |
| Urban Aluminium Ltd | Manufacturing | 2019 |
| Urban Boing Buy Limited | Wholesale & retail | 2026 |
| Urban Makaans Limited | Real estate | 2018 |
| Urban Renovations Service Ltd | Construction | 2026 |
| Urban Trailblazer Community Interest Company | Agriculture & fishing | 2021 |
| Urbangrid Construction Ltd | Construction | 2025 |
| Urbanrise Estates Ltd | Real estate | 2026 |
| Urbansage Property Developers Ltd | Real estate | 2024 |
| Urja Impex Ltd | Wholesale & retail | 2010 |
| Usfa Enterprises Ltd | Wholesale & retail | 2024 |
| Usisya Ltd | Professional & scientific | 2022 |
| USM Letting Ltd | Real estate | 2019 |
| Usman ALI Jewellery Trading UK Ltd | Wholesale & retail | 2021 |
| Usman Services Ltd | Transport & logistics | 2019 |
| Usman.Jabbar Limited | Wholesale & retail | 2023 |
| Usthat Properties Ltd | Real estate | 2025 |
| Utech Hub Limited | Information & communication | 2025 |
| Uxbridge Estates Ltd | Real estate | 2023 |
| Uzair Car Hire Ltd | Transport & logistics | 2023 |
| V & M (Victoria) Ltd | Wholesale & retail | 2018 |
| V & V Glazing Ltd | Construction | 2025 |
| V and N Housing Limited | Real estate | 2026 |
| V Cleaning Ltd | Administrative & support | 2024 |
| V J Enterprise Properties Limited | Real estate | 2008 |
| V Kethes ANU Ltd | Wholesale & retail | 2024 |
| V M Food and Wine Limited | Transport & logistics | 2009 |
| V V K P Storage and Distributions Limited | Real estate | 2024 |
| V&A Traders Ltd | Wholesale & retail | 2025 |
| V&K Glow Ltd | Administrative & support | 2025 |
| V&N Education Ltd | Education | 2022 |
| V&V Windows & Building Merchants Ltd | Construction | 2024 |
| V-Cap Builders Ltd | Construction | 2015 |
| V.K Carpets Ltd | Construction | 2023 |
| V60ART Ltd | Wholesale & retail | 2025 |
| V9 Global Limited | Real estate | 2023 |
| Vadher Construction Ltd | Construction | 2022 |
| Vadher Properties Limited | Real estate | 2024 |
| Vaid Herbals Limited | Other services | 2014 |
| Vailankanni Cafe Limited | Hospitality | 2023 |
| Valanka Goan Snacks Corner Ltd | Hospitality | 2023 |
| Valantix Ltd | Information & communication | 2025 |
| Valiant Autohaus Ltd | Wholesale & retail | 2026 |
| Valiant Construction Ltd | Construction | 2015 |
| Valiant Realty Ltd | Real estate | 2016 |
| Valite Ltd | Wholesale & retail | 2021 |
| Valley Mountain Construction Ltd | Construction | 2020 |
| Valli & V Limited | Real estate | 2025 |
| Vallisangel Ltd | Professional & scientific | 2024 |
| Vally's Goan Masala Ltd | Wholesale & retail | 2025 |
| Valtoro Corp Ltd | Wholesale & retail | 2025 |
| Value Techno Services Limited | Information & communication | 2019 |
| Vandy's Properties Ltd | Real estate | 2018 |
| Vandyor Ltd | Wholesale & retail | 2025 |
| Vandys Accounting Ltd | Professional & scientific | 2010 |
| Vanga Builders Ltd | Construction | 2026 |
| Vanguard Careers Ltd | Construction | 2025 |
| Vanity Beauty Mobile Therapist Ltd | Other services | 2020 |
| Vansh Constructions Limited | Construction | 2024 |
| Vape Fairies Limited | Information & communication | 2022 |
| Vape Style UK Ltd | Wholesale & retail | 2018 |
| Vape Wholesale Store Ltd | Wholesale & retail | 2024 |