| Tuberisers Ltd | Wholesale & retail | 2025 |
| Tureyleon Ltd | Wholesale & retail | 2026 |
| Twinstone Ltd | Construction | 2025 |
| Two Pieces Ltd | Wholesale & retail | 2021 |
| U K Top One E-Commerce Limited | Wholesale & retail | 2023 |
| U Select Limited | Wholesale & retail | 2024 |
| UAE Offers Ltd | Wholesale & retail | 2025 |
| Ubuntu Global Productions Ltd | Information & communication | 2022 |
| UK Ecom HB Ltd | Wholesale & retail | 2026 |
| UK Sihoo Holding Ltd | Financial services | 2021 |
| UK Sovereign Investments Ltd | Real estate | 2016 |
| ULC Media Works Ltd | Information & communication | 2025 |
| Ultrafastly Tech Limited | Information & communication | 2022 |
| UN Consultants Limited | Education | 2018 |
| Undement Ltd | Wholesale & retail | 2026 |
| UNI Traders Ltd | Wholesale & retail | 2022 |
| United Graphics Limited | Wholesale & retail | 2024 |
| United-Fm Limited | Administrative & support | 2023 |
| Unlimited Bargains Limited | Wholesale & retail | 2022 |
| Unpaided Ltd | Wholesale & retail | 2026 |
| Uplift Ventures CIC | Hospitality | 2025 |
| Urban Edge Partners Ltd | Wholesale & retail | 2025 |
| Useful Thingy Limited | Wholesale & retail | 2025 |
| Usman Yahya Ltd | Information & communication | 2022 |
| Usmani Blue Sky Commerce Ltd | Wholesale & retail | 2026 |
| Uzaily Limited | Information & communication | 2026 |
| Uzair Amjad Enterprises Ltd | Wholesale & retail | 2025 |
| V.J.& J.J. Limited | Construction | 2016 |
| Varnalis & Sons Carpentry Limited | Construction | 2020 |
| Vaultibly Limited | Information & communication | 2026 |
| Vavacart Ltd | Wholesale & retail | 2025 |
| Vela Foundation | Education | 2019 |
| Velix Group Limited | Wholesale & retail | 2026 |
| Vibe Coding Collective Ltd | Information & communication | 2026 |
| Vibha Technologies UK Ltd | Information & communication | 2019 |
| Viki Autos Ltd | Wholesale & retail | 2024 |
| Viktor Group Ltd | Construction | 2018 |
| Vintage Online Ltd | Wholesale & retail | 2025 |
| Violet Fantasy Land Trading Co., Ltd | Wholesale & retail | 2021 |
| Vistago Limited | Wholesale & retail | 2024 |
| Vitz & Supps Ltd | Wholesale & retail | 2025 |
| Vocanex Limited | Professional & scientific | 2025 |
| Voised Limited | Information & communication | 2026 |
| Vykon Media Ltd | Information & communication | 2024 |
| Vynvex Technologies Ltd | Information & communication | 2025 |
| Wangbingbin Ltd | Wholesale & retail | 2025 |
| Wanning Technology Co., Ltd | Wholesale & retail | 2025 |
| Waqarale Ltd | Wholesale & retail | 2025 |
| Warm Cladding Limited | Construction | 2019 |
| Warrior Resourses Limited | Wholesale & retail | 2025 |
| Waybest Limited | Wholesale & retail | 1994 |
| WE R Gifted CIC | Education | 2025 |
| WE Rendering Limited | Construction | 2023 |
| Webrankfy Ltd | Wholesale & retail | 2025 |
| Wf.Hn Associates Limited | Wholesale & retail | 2025 |
| Whit Caravan Park Limited | Hospitality | 2015 |
| Whiteallbuild Ltd | Construction | 2025 |
| Whitejamesdev Ltd | Construction | 2025 |
| Whitetooth Limited | Health & social care | 2006 |
| Winwin Investments 2 Limited | Real estate | 2026 |
| Wocare London Limited | Wholesale & retail | 2025 |
| Woodworks Bespoke Limited | Construction | 2009 |
| World Businesses Groups Limited | Information & communication | 2023 |
| Xandrix Limited | Health & social care | 2015 |
| Xian HFP Trading Ltd | Wholesale & retail | 2025 |
| Xolcore Technologies Ltd | Information & communication | 2025 |
| Xyno Technologies Ltd | Manufacturing | 2025 |
| Y2K Dream Ltd | Wholesale & retail | 2025 |
| Yasa Services Ltd | Transport & logistics | 2025 |
| Yass Developments Limited | Real estate | 2025 |
| YB Mart Ltd | Wholesale & retail | 2025 |
| YD Solutions Ltd | Administrative & support | 2025 |
| Yellow Daisies Limited | Other services | 2025 |
| Yellow Light Pictures Limited | Information & communication | 2022 |
| YES 2 Buy Limited | Wholesale & retail | 2025 |
| YKL Solutions Ltd | Information & communication | 2025 |
| York Engineering Limited | Construction | 2025 |
| Young Legend Care Ltd | Health & social care | 2018 |
| Youngs Establishment Ltd | Real estate | 2023 |
| Your Future Campus Ltd | Information & communication | 2023 |
| Your Internet GUY Ltd | Information & communication | 2026 |
| Zaitsolution Ltd | Wholesale & retail | 2025 |
| Zappy Zoom Ltd | Wholesale & retail | 2025 |
| Zarrar@Jz Ltd | Wholesale & retail | 2025 |
| ZEE Shah Solutions Ltd | Wholesale & retail | 2026 |
| Zeera Kebabish Ltd | Hospitality | 2020 |
| ZEM Global Consultants Ltd | Professional & scientific | 2026 |
| Zene UK Ltd | Construction | 2025 |
| Zenexa Holdings Limited | Wholesale & retail | 2025 |
| Zhuzh Eyewear Ltd | Wholesale & retail | 2024 |
| Ziff Digital Ltd | Information & communication | 2024 |
| Zita Property Group Limited | Real estate | 2025 |
| Zonix Prime Ltd | Wholesale & retail | 2026 |
| Zooz Labs Ltd | Information & communication | 2023 |
| Zorro Interiors Limited | Manufacturing | 2014 |
| ZR Trades Ltd | Financial services | 2026 |
| ZRK Dealz Ltd | Wholesale & retail | 2025 |
| Zstoreuk Ltd | Wholesale & retail | 2024 |
| Zxpr Ltd | Wholesale & retail | 2023 |