| THE Self Employed Club Ltd | Administrative & support | 2010 |
| THE Sidebyside Partnership International Limited | Professional & scientific | 2016 |
| THE Stuart Ritchie Ltd | Administrative & support | 2023 |
| THE Tenth Group Limited | Administrative & support | 2023 |
| THE Together Initiative | Professional & scientific | 2020 |
| THE Wave Academy CIC | Education | 2024 |
| THE Whitney KIM Limited | Professional & scientific | 2023 |
| THE Wholesome Technology Company Limited | Information & communication | 2018 |
| THE Xaymaca Group Ltd | Professional & scientific | 2025 |
| THE XST Group LLP | | 2024 |
| Theseus Investments Limited | Financial services | 2025 |
| Think Digital Limited | Information & communication | 2021 |
| Thornborough Limited | Professional & scientific | 2020 |
| THREE26 Ltd | Information & communication | 2018 |
| Thrive Network Limited | Health & social care | 2022 |
| Thrive Physio Ltd | Health & social care | 2025 |
| Tidehawk Holdings | Financial services | 2025 |
| Tilo Trading Ltd | Wholesale & retail | 2025 |
| Timbertonne Limited | Wholesale & retail | 2024 |
| TLD Properties Limited | Real estate | 2024 |
| Tlyc Ltd | Wholesale & retail | 2022 |
| Totali-Me: Digital Ltd | Information & communication | 2020 |
| Translator Services UK Limited | Professional & scientific | 2023 |
| Translink Technology Limited | Information & communication | 1998 |
| Treadstone AI Ltd | Information & communication | 2023 |
| Trendsetter Group Ltd | Construction | 2022 |
| Tresma Limited | Information & communication | 2022 |
| Triple Oak Capital Ltd | Professional & scientific | 2024 |
| Trusted Storage Ltd | Administrative & support | 2024 |
| Tugu Limited | Professional & scientific | 2012 |
| Turnkey Project Solutions Ltd | Professional & scientific | 2018 |
| U Stream Limited | Information & communication | 2019 |
| UK Movers Group Ltd | Financial services | 2026 |
| UK Revolutions Limited | Wholesale & retail | 2016 |
| UK Workwear Solutions Ltd | Wholesale & retail | 2025 |
| UK32 Ltd | Professional & scientific | 2019 |
| Ukraine Strategic Partners Limited | Other services | 2025 |
| United Atomic Limited | Construction | 2022 |
| United Industrial Supplies Ltd | Wholesale & retail | 1990 |
| Universalize Limited | Information & communication | 2019 |
| UPS Battery Center (UK) Limited | Wholesale & retail | 2026 |
| Utopia Properties Ltd | Real estate | 2022 |
| V&Cb Ltd | Manufacturing | 2025 |
| V4V Limited | Professional & scientific | 2006 |
| Valeridge Developments Ltd | Real estate | 2026 |
| Valuing Employee Talent HR Ltd | Professional & scientific | 2019 |
| Veena Mccoole Limited | Wholesale & retail | 2020 |
| Vellorix Ltd | Hospitality | 2024 |
| Vendlab Ltd | Information & communication | 2019 |
| Vensha Limited | Information & communication | 2009 |
| Verde Sombra Ltd | Manufacturing | 2022 |
| Vertyx Solutions Limited | Wholesale & retail | 2024 |
| Verus Consulting Limited | Information & communication | 2004 |
| Very Media Holdings Limited | Professional & scientific | 2024 |
| Vibe NO. 9 Ltd | Extraterritorial | 2019 |
| Victoria Darci & Co. London Ltd | Wholesale & retail | 2018 |
| Victoria Plumbers & Engineering Ltd | Construction | 2024 |
| Viewpoint Pictures Limited | Information & communication | 2022 |
| Virtual Oath Studios Ltd | Information & communication | 2020 |
| Vital Signs Media Ltd | Other services | 2024 |
| Vyoma Brands Ltd | Wholesale & retail | 2026 |
| Vytal Brands Ltd | Wholesale & retail | 2026 |
| W3 Projects Ltd | Real estate | 2022 |
| Waistshaper UK Ltd | Wholesale & retail | 2014 |
| Walk and Wild Co Ltd | Wholesale & retail | 2024 |
| Wavebridge Capital Ltd | Professional & scientific | 2024 |
| WE Wait Limited | Information & communication | 2017 |
| Webmk Ltd | Real estate | 2009 |
| Westport Search Ltd | Administrative & support | 2023 |
| Will Dallimore Ltd | Professional & scientific | 2022 |
| Williamson Assets Ltd | Real estate | 2023 |
| Wilson Hibbert & Co Limited | Professional & scientific | 1998 |
| Wine Business Group Ltd | Administrative & support | 2024 |
| Wireworks Ltd | Construction | 2023 |
| With-It Tutors LLP | | 2024 |
| World Forum for SRI Lankan Muslims Limited | Other services | 2021 |
| World Garden Limited | Real estate | 2021 |
| WQ International Trading Limited | Wholesale & retail | 2024 |
| Wynnchester Outdoors Limited | Wholesale & retail | 2015 |
| Xenesis Holdings Ltd | Information & communication | 2025 |
| Yamak Investments Limited | Real estate | 2022 |
| Yayora Ltd. | Information & communication | 2011 |
| YC CPA Advisory Limited | Professional & scientific | 2025 |
| Young Gamers and Gamblers Education Trust | Education | 2014 |
| Young, Brilliant & Ready Ltd | Education | 2016 |
| Your Cleaning Specialists Ltd | Administrative & support | 2026 |
| YUN FBO Ltd | Wholesale & retail | 2023 |
| Zeren Search Ltd | Administrative & support | 2018 |
| Zero Service Solutions Limited | Professional & scientific | 2019 |
| ZERO42 Ltd | Information & communication | 2022 |
| Zest Psychology Ltd | Professional & scientific | 2020 |
| Zoltan Window Cleaning Ltd | Administrative & support | 2025 |