| Watts International Group Co., Ltd | Manufacturing | 2024 |
| Watts UP Electrical Ltd | Construction | 2012 |
| Wayaka Properties Ltd | Real estate | 2023 |
| Wayber Co., Limited | Manufacturing | 2025 |
| WBA Hythe Limited | Professional & scientific | 2019 |
| WE AIM to Live Productions Limited | Information & communication | 2024 |
| WE ARE Klay Limited | Professional & scientific | 2024 |
| WE Childcare Limited | Health & social care | 2020 |
| WE Clear London Ltd | Water & waste | 2025 |
| WE FIX Maintain Ltd | Construction | 2021 |
| WE Lead Power Ltd | Wholesale & retail | 2014 |
| Weavers Hair Limited | Other services | 2019 |
| Weavers Hairdressing Limited | Other services | 2001 |
| Web Fulfilment Services Limited | Administrative & support | 2013 |
| Webest Hardware Co., Limited | Professional & scientific | 2005 |
| Wecare Industrial Limited | Extraterritorial | 2014 |
| Wecon Technology Ltd | Extraterritorial | 2020 |
| Weder International Company Limited | Extraterritorial | 2023 |
| Weida Trading Co., Ltd | Extraterritorial | 2023 |
| Weifang Cynda Chemical Co., Ltd. | Wholesale & retail | 2022 |
| Weifang Jingda Plastic Machinery Co., Ltd | Extraterritorial | 2014 |
| Weifang Rayan Trading Co., Ltd | Extraterritorial | 2023 |
| Weifang Xinyuan Metal Products Co., Ltd. | Extraterritorial | 2015 |
| Weihai Shanhua Weavers Carpet Co., Ltd | Professional & scientific | 2016 |
| Weihanda Tools Co., Ltd | Wholesale & retail | 2021 |
| Weihui Huaxing Group Limited | Wholesale & retail | 2025 |
| Weike Auto Parts Co., Ltd | Extraterritorial | 2024 |
| Weining International Co., Ltd | Manufacturing | 2024 |
| Weipu Company Limited | Wholesale & retail | 2012 |
| Weishan Dawei Wood Co., Ltd | Professional & scientific | 2015 |
| Welink Consulting Limited | Information & communication | 2021 |
| Well AGE Clinic Ltd | Health & social care | 2026 |
| Well Line International Limited | Extraterritorial | 2023 |
| Well Route Co., Ltd | Transport & logistics | 2017 |
| Well Star Building Materials Ltd | Extraterritorial | 2013 |
| Well Sunshine Industrial Co., Ltd | Extraterritorial | 2013 |
| Well-Long (H.K) Commercial Trading Co. Limited | Wholesale & retail | 2011 |
| Welld Supply Chain Management Ltd | Extraterritorial | 2015 |
| Wellfect Wellbeing Consultancy Ltd | Information & communication | 2023 |
| Wellfirst Marine Technology and Service Co., Ltd | Manufacturing | 2023 |
| Wellfount Ltd | Extraterritorial | 2020 |
| Wellmade Group Ltd | Administrative & support | 2013 |
| Wellmarine Service Limited | Manufacturing | 2019 |
| Wellmax Industrial Limited | Wholesale & retail | 2019 |
| Wellorigin London Limited | Manufacturing | 2025 |
| Wellsland Industrial Ltd | Wholesale & retail | 2020 |
| WEN Technology Ltd | Wholesale & retail | 2021 |
| Wencheng Trading Co., Ltd | Manufacturing | 2021 |
| Wending Technology Ltd. | Manufacturing | 2019 |
| Wengyi Trade Co., Ltd | Extraterritorial | 2023 |
| Wenhan Technology Co., Ltd | Wholesale & retail | 2019 |
| Wenling Tanwen Electric Co., Ltd | Manufacturing | 2020 |
| Wenlu International Trading Co., Ltd | Extraterritorial | 2020 |
| Wenzhou Acecasa Economy and Trade Co., Ltd. | Manufacturing | 2025 |
| Wenzhou Anda Import & Export Co., Ltd | Extraterritorial | 2019 |
| Wenzhou Eyster Glasses Co., Ltd | Manufacturing | 2021 |
| Wenzhou Fashion Imp&Exp Co., Ltd | Extraterritorial | 2012 |
| Wenzhou Haibao Printing Co., Ltd | Extraterritorial | 2016 |
| Wenzhou Huanghe Micro Fibre Co., Ltd | Manufacturing | 2013 |
| Wenzhou Junlin Stationery Limited | Extraterritorial | 2016 |
| Wenzhou Snbv Flow Solutions Co., Ltd | Wholesale & retail | 2024 |
| Wenzhou Talent International Trading Company Limited | Extraterritorial | 2023 |
| Wenzhou Unisun Electric Co., Ltd. | Extraterritorial | 2018 |
| Werts & ALL Limited | Other services | 2023 |
| Wesales Industrial Co., Ltd | Extraterritorial | 2012 |
| Wessex Court Commercial Limited | Households | 2018 |
| Wessex Court Limited | Real estate | 2012 |
| Wessex Property Developments Ltd | Construction | 2020 |
| West END Accountancy Ltd | Professional & scientific | 2013 |
| West END Singing Waiters Ltd | Arts & recreation | 2015 |
| West Enterprise Holdings Ltd | Real estate | 2026 |
| West Oak(House Residents)Society Limited | Households | 1960 |
| West Season Technology Co., Ltd | Wholesale & retail | 2024 |
| West Unique Bright Co Ltd | Extraterritorial | 2016 |
| West Wickham Allotments Limited | Arts & recreation | 2019 |
| West Wickham Launderette Limited | Other services | 2017 |
| West Wickham Montessori Pre-School Limited | Education | 2018 |
| Western Drugs Ltd. | Manufacturing | 2020 |
| Western FOX Limited | Extraterritorial | 2019 |
| Westgate Road Holdings Limited | Households | 2023 |
| Westhorne Residents Company Limited | Households | 1971 |
| Westpan International Development Limited | Manufacturing | 2010 |
| Westwood Limes Limited | Information & communication | 2001 |
| WG Locksmiths Ltd | Administrative & support | 2017 |
| WH Autos MB Specialists Ltd | Wholesale & retail | 2026 |
| What Katie DID Communications Ltd | Professional & scientific | 2025 |
| Wheathill and Auckland Limited | Real estate | 1989 |
| Whim Medicine Group Limited | Manufacturing | 2022 |
| Whisey Bens Fashion Control Limited | Extraterritorial | 2008 |
| Whisky Patrol Limited | Wholesale & retail | 2023 |
| Whispering Rebel Limited | Information & communication | 2015 |
| Whistlemead Ltd | Professional & scientific | 2011 |
| White & Co. Ltd | Other services | 2019 |
| White Associates Property Developments Limited | Construction | 2019 |
| White Clouds Packing Materials Co., Ltd | Extraterritorial | 2022 |
| White Hawk Ventures Ltd | Administrative & support | 2016 |
| White Lotus Health Limited | Other services | 2019 |
| White&Rock&Co Ltd | Construction | 2024 |
| Whitecap SKI Limited | Professional & scientific | 2006 |
| Whitecroft Capital Advisers Limited | Financial services | 2016 |