| Wessex EPC Ltd | Information & communication | 2006 |
| Wessex Rope & Packaging Limited | Administrative & support | 2019 |
| West Country Forklifts Ltd | Manufacturing | 2014 |
| West Country Horse Transport Ltd | Transport & logistics | 2015 |
| West Kent Auto Ltd | Wholesale & retail | 2024 |
| West Lodge RTM Company Limited | Households | 2009 |
| West Motney Way (Rainham) Limited | Households | 2018 |
| West Wickham Service Station Limited | Wholesale & retail | 2019 |
| Westbrook Computers Ltd | Other services | 2011 |
| Western Workshop Supplies Ltd | Wholesale & retail | 2010 |
| Westmoor Nurseries Kent Limited | Wholesale & retail | 2023 |
| Westo Services Ltd | Construction | 2018 |
| Wham Entertainment Group Ltd | Arts & recreation | 2013 |
| Wheatsheaf Estate Limited | Hospitality | 2021 |
| Wheelie Events Ltd | Other services | 2018 |
| Wheelwright (Holdings) Limited | Professional & scientific | 2010 |
| Wheelwright Group Limited | Wholesale & retail | 2021 |
| Wheelwright Limited | Wholesale & retail | 1985 |
| Whistle Work UK Ltd | Administrative & support | 2023 |
| Whistley Ltd | Real estate | 2003 |
| White Marble Property Ltd | Real estate | 2024 |
| White Rose Care Kent Ltd | Health & social care | 2025 |
| Whitehead Catering Events Limited | Hospitality | 2003 |
| Whitelink Communications Limited | Information & communication | 2007 |
| WHM Builders Limited | Construction | 2020 |
| WIG and PEN Associates Limited | Administrative & support | 2016 |
| Wigmore DRY Cleaners Limited Limited | Other services | 2023 |
| Wigmore FB Ltd | Hospitality | 2019 |
| Wigmore Florists Limited | Wholesale & retail | 2018 |
| Wigmore Glade Management Limited | Real estate | 2007 |
| Wigmore Store Ltd | Wholesale & retail | 2017 |
| Wild Rover Media Limited | Professional & scientific | 2021 |
| Wildes Contractors Limited | Construction | 2019 |
| Will Sims Limited | Construction | 2021 |
| Willi@Mps Services Limited | Construction | 2025 |
| Williams Agriculture Ltd | Extraterritorial | 2023 |
| Williams Property Maintenance Kent Ltd | Construction | 2022 |
| Willow Trees Estate (Wigmore) Management Limited | Households | 2011 |
| Willow Wood (Dorset) Ltd | Construction | 2023 |
| Wills Construction and Property Management Ltd | Construction | 2025 |
| Wilsjek UK Limited | Professional & scientific | 2022 |
| Wilson Agencies Ltd | Wholesale & retail | 2021 |
| Wilsons Residentials Ltd | Real estate | 2025 |
| WIN Legacy Ltd | Real estate | 2019 |
| WIN WIN International Group Co., Ltd. | Manufacturing | 2023 |
| Win-Ablement Care Service Ltd | Professional & scientific | 2022 |
| Wincanton Auto Repairs Ltd | Wholesale & retail | 2008 |
| Wincanton Carwash Ltd | Administrative & support | 2022 |
| Winchester Arms (Trull) Limited | Hospitality | 2015 |
| Windmill Street (Gravesend) Limited | Households | 2013 |
| Windong-Express Limited | Transport & logistics | 2015 |
| Windrose Rural Media Trust | Information & communication | 2009 |
| Windrush Communications Ltd | Information & communication | 2021 |
| Wings Apparel Limited | Administrative & support | 2020 |
| Winning Way International Logistics Co., Ltd | Extraterritorial | 2018 |
| Winter and Smith (Electronics) Limited | Manufacturing | 1991 |
| Winters E-Commerce Ltd | Wholesale & retail | 2024 |
| Winton (Restoration, Renovation and Interior Decoration) Ltd | Wholesale & retail | 2023 |
| Wisdom for Life Mission | Other services | 2023 |
| Wisdom Marine Technology Services (Wuxi) Co., Ltd | Wholesale & retail | 2024 |
| Wiseheart College Ltd | Education | 2015 |
| Wiseman Rigging and Engineering Ltd | Construction | 2012 |
| WMW Contractors Limited | Professional & scientific | 2007 |
| WN Cost Management Limited | Construction | 2018 |
| Wolf Pack Golf Ltd | Arts & recreation | 2025 |
| Wolf Security (South East) Ltd | Administrative & support | 2023 |
| Wolfenstein Consumer Electronics (UK) Ltd | Wholesale & retail | 2023 |
| Women in Ports Ltd | Professional & scientific | 2024 |
| Women’S Fearless Coaching Limited | Professional & scientific | 2020 |
| Womg Ltd | Mining & quarrying | 2023 |
| Wood & Sons Property Limited | Real estate | 2023 |
| Woodies Local Ltd | Wholesale & retail | 2016 |
| Woodnwalls Limited | Construction | 2014 |
| Woodview Residents Association Limited | Real estate | 2006 |
| Woolly Thinking Limited | Administrative & support | 2019 |
| Word of Hope Ministries | Other services | 2012 |
| Work Smart Office Solutions Ltd | Administrative & support | 2021 |
| World Food & Drinks Limited | Wholesale & retail | 2017 |
| Worldwide Emporium Limited | Wholesale & retail | 2023 |
| Wozair Energy Holdings Limited | Financial services | 2019 |
| Wozair Group Holdings Limited | Financial services | 2021 |
| Wozair Group Limited | Financial services | 2020 |
| Wozair Limited | Manufacturing | 1995 |
| Wright & Sons Land Consultancy Ltd | Professional & scientific | 2026 |
| Wuhan Granvey Technology Co., Ltd | Wholesale & retail | 2019 |
| Wumi Body & Face Studio Ltd | Wholesale & retail | 2025 |
| Wumziee Ltd | Information & communication | 2020 |
| Wyke Accountancy Limited | Professional & scientific | 2021 |
| Wyke Court Limited | Extraterritorial | 1983 |
| Wyke Cowsheds Limited | Hospitality | 2020 |
| Wyke Hall (Management) Limited | Hospitality | 1973 |
| Wyndgreen Apartments Limited | Households | 2008 |
| Wynncom Consultancy Services Limited | Information & communication | 2015 |
| Xingruida Trade Co., Ltd | Manufacturing | 2025 |
| Xingwang International Construction Machinery Ltd | Wholesale & retail | 2023 |
| Xinrui International Trading Co., Ltd | Wholesale & retail | 2023 |
| Xinruida International Trading Co., Ltd | Manufacturing | 2026 |
| Xinyichen (Shandong) International Trade Co., Ltd. | Manufacturing | 2024 |
| XLR8 H2O Limited | Professional & scientific | 2026 |
| Xterian Services Limited | Health & social care | 2021 |