| Wakehurst Services Limited | Administrative & support | 2024 |
| Walis & Co Ltd | Professional & scientific | 2008 |
| Walkbek Consulting Limited | Professional & scientific | 2022 |
| Walleryk Ltd | Wholesale & retail | 2025 |
| Walls Treasure Ltd | Professional & scientific | 2025 |
| Waltons' Cafe Express Ltd | Hospitality | 2020 |
| WAN MEI Trading Co., Ltd | Administrative & support | 2022 |
| WAN Yong Ltd | Wholesale & retail | 2025 |
| WAN ZHI Ltd | Wholesale & retail | 2025 |
| Wandford Trading Limited | Extraterritorial | 2021 |
| Wang BAO Quan Ltd | Wholesale & retail | 2026 |
| Wang DP Limited | Wholesale & retail | 2025 |
| Wang Jian Chao Ltd | Wholesale & retail | 2026 |
| Wang Jing Qiang Ltd | Arts & recreation | 2025 |
| Wang Long Ltd | Wholesale & retail | 2025 |
| Wang SHI Cheng Ltd | Wholesale & retail | 2025 |
| Wang Xiao LIN Ltd | Wholesale & retail | 2025 |
| Wang XU WU Ltd | Wholesale & retail | 2026 |
| Wang YUE Ltd | Wholesale & retail | 2025 |
| Wangcai Group Ltd | Wholesale & retail | 2025 |
| Wangfly Ltd | Wholesale & retail | 2025 |
| Wangguoguohuihui Trade Ltd | Wholesale & retail | 2025 |
| Wangjunpengtk Limited | Wholesale & retail | 2026 |
| Wangkunming Limited | Wholesale & retail | 2025 |
| Wanglinlinqqi Trade Ltd | Wholesale & retail | 2025 |
| Wangllljun Trade Ltd | Wholesale & retail | 2025 |
| Wangs Import and Export Company Limited | Wholesale & retail | 2023 |
| Wangyang Bay International Trading Limited | Wholesale & retail | 2025 |
| Wangyq Ltd | Wholesale & retail | 2025 |
| Wanhuitong Limited | Wholesale & retail | 2025 |
| Warhurst Landscaping and Property Services Ltd | Water & waste | 2026 |
| Warmhaven Co., Ltd | Wholesale & retail | 2025 |
| Warms Commerce Limited | Wholesale & retail | 2024 |
| Warner Adelson Limited | Other services | 2017 |
| Warnfield Hewitt Property Services Limited | Real estate | 2010 |
| Warp 10 Tech Ltd | Information & communication | 2025 |
| Warren Benbow Architects Limited | Professional & scientific | 2006 |
| Warrington Hillcrest Ltd | Real estate | 2020 |
| Wash-Agri Limited | Agriculture & fishing | 2023 |
| Wasloved Ltd | Wholesale & retail | 2025 |
| Water Heat Power Ltd | Construction | 2025 |
| Waterbank Investments Limited | Real estate | 2010 |
| Waterhouse Prints Limited | Wholesale & retail | 2023 |
| Waterlabs Projects Limited | Wholesale & retail | 2012 |
| Watkins Signature Living Ltd | Construction | 2026 |
| Watson ROW Capital Ltd | Financial services | 2025 |
| Watson Total Workplace Solutions Limited | Wholesale & retail | 2018 |
| Watstock Property Investments Ltd | Real estate | 2025 |
| Watts Cleaning Ltd | Administrative & support | 2026 |
| Watts Consultancy and Training Ltd | Health & social care | 2023 |
| Waugor Limited | Wholesale & retail | 2025 |
| Wave Vine Limited | Information & communication | 2025 |
| Wave Voyages Limited | Administrative & support | 2012 |
| Wavelogic Labs Ltd | Information & communication | 2025 |
| Waverlynn Trading Ltd | Manufacturing | 2025 |
| WAW Investments Limited | Real estate | 2023 |
| Wayfarers (U.K.) Limited(The) | Administrative & support | 1984 |
| Wayfaring Walks Ltd | Administrative & support | 2022 |
| Wayfind Holdings Ltd | Real estate | 2023 |
| Waynes Building Contractors Ltd | Construction | 2018 |
| Waystar Commerce Ltd | Wholesale & retail | 2025 |
| WBF Environmental Restoration Ltd | Professional & scientific | 2026 |
| WBR Medical Ltd | Health & social care | 2019 |
| WD-24 CIC | Arts & recreation | 2024 |
| WE ARE Funny Project Limited | Arts & recreation | 2013 |
| WE ARE Rava Ltd | Wholesale & retail | 2025 |
| WE ARE Your Advisor Ltd | Professional & scientific | 2023 |
| WE Care Therapy & Training Ltd | Public administration | 2026 |
| WE Change Limited | Other services | 2017 |
| WE Drive London Ltd | Administrative & support | 2024 |
| WE Enqiang Limited | Wholesale & retail | 2025 |
| WE Move & Deliver Logistics Ltd | Wholesale & retail | 2020 |
| WE Three Ventures Limited | Other services | 2026 |
| Wealth Chambers Ltd | Financial services | 2025 |
| Wealth Pass Ltd | Wholesale & retail | 2025 |
| Webelyx Operations Frameworks Ltd | Information & communication | 2026 |
| Webline Ltd | Financial services | 2024 |
| Webora Solutions Limited | Information & communication | 2025 |
| WEBSITEFORYOU24 Ltd | Information & communication | 2023 |
| Webtrix Limited | Information & communication | 2025 |
| Webworks Media Limited | Other services | 2023 |
| Wecan International Machinery Ltd | Extraterritorial | 2011 |
| Wecoresoft Ltd | Professional & scientific | 2022 |
| Weefrenchie Ltd | Arts & recreation | 2025 |
| Wefree Company Ltd | Wholesale & retail | 2021 |
| Wegloworld Ltd | Information & communication | 2025 |
| WEI Kang Limited | Wholesale & retail | 2024 |
| Weihai Dazheng Hardware Product Co., Ltd | Wholesale & retail | 2026 |
| Weikang Trading Co., Ltd | Wholesale & retail | 2024 |
| Weilaibl Co., Ltd | Wholesale & retail | 2024 |
| Weimei Industry Co., Ltd | Manufacturing | 2020 |
| Weiyan Technology Co., Ltd | Manufacturing | 2024 |
| Weiyi Fashion Co., Ltd | Extraterritorial | 2022 |
| Weiyi Tour Ltd | Hospitality | 2025 |
| Weiyi Travel Ltd | Hospitality | 2025 |
| Weizimanzf Co., Ltd | Wholesale & retail | 2025 |
| Weizuozuo WEI Ltd | Wholesale & retail | 2025 |
| Wejam Events Ltd | Arts & recreation | 2020 |
| Welcome Honest&Surprising Trading Limited | Administrative & support | 2022 |
| Wellbeingessentials Ltd | Wholesale & retail | 2025 |