| Vital Management Consultants Limited | Professional & scientific | 2013 |
| Vivek Properties UK Ltd | Hospitality | 2015 |
| VKS Capital Assets Limited | Real estate | 2026 |
| Vlad Build Ltd | Construction | 2006 |
| Vland Limited | Construction | 2017 |
| VMR1 Limited | Construction | 2025 |
| VP Steel Ltd | Construction | 2009 |
| VR Tech Consulting Limited | Information & communication | 2008 |
| VVN Kitchen Installations Ltd | Construction | 2021 |
| W M Golf Ltd | Arts & recreation | 2019 |
| Waikato Lodge Limited | Households | 1961 |
| Waiz Hadi Ltd | Real estate | 2022 |
| Wakefield Search Ltd | Administrative & support | 2014 |
| Wakil & Co Ltd | Real estate | 2014 |
| Wali Uzair Limited | Health & social care | 2024 |
| Walsh Property & Development Ltd | Construction | 2024 |
| Wandsworth Consultants Ltd | Education | 2022 |
| Wandsworth Property Ltd | Real estate | 2023 |
| Wanstead Golf Centre Ltd | Arts & recreation | 2023 |
| Wanti Terrace RTM Company Limited | Households | 2024 |
| Waqala TAJ Limited | Administrative & support | 2023 |
| Warren Court Residents Association Limited | Households | 1968 |
| Waters Freeman Limited | Real estate | 2021 |
| Watson & SON Tailors Ltd | Other services | 2010 |
| Weeco Ltd | Real estate | 2025 |
| Weltree Consulting Ltd | Professional & scientific | 2020 |
| West HAM Lane Ltd | Other services | 2014 |
| West Hatch High School Academy Trust | Education | 2011 |
| Westwood Montgomerie Freehold Ltd | Hospitality | 2022 |
| Whitestone Ventures Ltd | Real estate | 2021 |
| Whitewater Enterprises Ltd | Health & social care | 2023 |
| Whizz Consultants Ltd | Professional & scientific | 2024 |
| Wick Construction Ltd | Construction | 2022 |
| Wildrose Accounting Ltd | Professional & scientific | 2013 |
| Willow Grange Essex Limited | Households | 2017 |
| Wings Installation Ltd | Construction | 2025 |
| Wireless Gadgets Ltd | Wholesale & retail | 2020 |
| Witon Builders Limited | Construction | 2018 |
| Woodford Table Tennis School Ltd | Administrative & support | 2012 |
| Woolston Manor Residents Limited | Administrative & support | 2017 |
| WR Accounting Solutions Limited | Professional & scientific | 2022 |
| Wrestling Security Ltd | Administrative & support | 2012 |
| Writers Inc Limited | Administrative & support | 2006 |
| WRM Property 1 Ltd | Real estate | 2024 |
| WRM Property 2 Ltd | Real estate | 2026 |
| Wyld Leisure Ltd | Other services | 2025 |
| Xec-T Consultancy Ltd | Information & communication | 2020 |
| Xenith Accounts Ltd | Real estate | 2018 |
| Xodus Care Ltd | Health & social care | 2020 |
| Xtrafit Fitness Ltd | Arts & recreation | 2021 |
| Xtreme Parts Limited | Wholesale & retail | 2018 |
| XXL Investments Limited | Financial services | 2025 |
| Yardguys Ltd | Construction | 2025 |
| Yaseen Compassion Limited | Wholesale & retail | 2025 |
| Ybells Consulting Limited | Information & communication | 2014 |
| YES Chef Eats Ltd | Hospitality | 2026 |
| Yinyinola Enterprises Limited | Hospitality | 1997 |
| Yips Golf Ltd | Administrative & support | 2024 |
| YOU Grow Payroll Limited | Administrative & support | 2026 |
| Youneedwetransport Ltd | Transport & logistics | 2023 |
| Young Engineers Academy Ltd | Education | 2025 |
| Youngs of London Ltd | Real estate | 2022 |
| Your Daily Dose Limited | Wholesale & retail | 2025 |
| Your Frontliner Healthcare Limited | Health & social care | 2021 |
| Your VPA Limited | Administrative & support | 2022 |
| Yumilicious Ltd | Hospitality | 2021 |
| Yuzasu Limited | Real estate | 2022 |
| Zaman Sons Ltd | Real estate | 2025 |
| Zari Parquet&Art Limited | Construction | 2015 |
| ZAS Consultancy Limited | Extraterritorial | 2018 |
| Zayusu Limited | Real estate | 2024 |
| Zehd Consultants Ltd | Real estate | 2025 |
| Zenguard Ltd | Wholesale & retail | 2025 |
| Zentrova Limited | Wholesale & retail | 2025 |
| Zeven Trading Ltd | Construction | 2024 |
| ZIM Travels Limited | Administrative & support | 2024 |
| Zmpt Ltd | Education | 2023 |
| ZNR Ltd | Information & communication | 2014 |
| ZRI Capital Ltd | Real estate | 2021 |
| ZT Writing Solutions Ltd | Professional & scientific | 2025 |
| Zucconi Group Limited | Financial services | 2025 |
| Zuish Ltd | Real estate | 2013 |
| Zuish Medical Services Ltd | Health & social care | 2017 |