| Wafa Enterprises Ltd | Real estate | 2021 |
| Wafflelicious Ltd | Hospitality | 2025 |
| Wafi Medical Limited | Health & social care | 2025 |
| Wagner & Bond Ltd | Professional & scientific | 2011 |
| Wainfleet Limited | Wholesale & retail | 2014 |
| WAK Group Ltd | Hospitality | 2026 |
| Wale Digital Solutions Ltd | Information & communication | 2025 |
| Wali Group Ltd | Financial services | 2023 |
| Walk the Talk Management Ltd | Arts & recreation | 2003 |
| Wallford Properties Ltd | Real estate | 1998 |
| Wallie-Wb Limited | Health & social care | 2017 |
| Wallmar Facades Ltd | Construction | 2019 |
| Wallmead Gardens Limited | Real estate | 2026 |
| Walowe & Sons Limited | Health & social care | 2013 |
| Wandering Dodo Limited | Financial services | 2018 |
| Wanna Pizza This Ltd | Hospitality | 2014 |
| Wardcomp Limited | Real estate | 2026 |
| Ware Global Ltd | Real estate | 2024 |
| Wargrave Investments Limited | Real estate | 2017 |
| Warm Wishes Warehouse Ltd | Wholesale & retail | 2025 |
| Warms Consulting Limited | Professional & scientific | 2022 |
| Warrington Hand Car Wash Ltd | Other services | 2025 |
| Warrior Lifts Limited | Professional & scientific | 2024 |
| Warwick Beauty Sopt (UK) Ltd | Other services | 2016 |
| Warwick YS Ltd | Real estate | 2024 |
| Washbourne Enterprises Limited | Wholesale & retail | 2023 |
| Wasib Limited | Transport & logistics | 2025 |
| Wassan Traders Limited | Wholesale & retail | 2023 |
| Wassh BO Ltd | Other services | 2020 |
| Watan Flavours Ltd | Hospitality | 2025 |
| Watan Nuts Ltd | Agriculture & fishing | 2025 |
| Watanhalal Limited | Wholesale & retail | 2015 |
| Watch My Wheels Ltd | Education | 2020 |
| Water Networks Limited | Energy | 2019 |
| Water System Management Ltd | Construction | 2021 |
| Waterflow Consultancy Ltd | Administrative & support | 2016 |
| Waterlay Limited | Real estate | 2008 |
| Waterstones Publishing Limited | Information & communication | 2025 |
| Watford Kantha Swami Hindu Temple | Other services | 2019 |
| Watling Local Ltd | Wholesale & retail | 2025 |
| Watling Managed Estates Ltd | Real estate | 2024 |
| Watling Radio Cars Ltd | Transport & logistics | 2014 |
| Watney Eyecare Limited | Wholesale & retail | 2003 |
| Watsmore Limited | Wholesale & retail | 2022 |
| Watson and Granger Ltd | Health & social care | 2024 |
| Wave Pharma Limited | Wholesale & retail | 2013 |
| Waverley Lodge Romsey Limited | Health & social care | 2024 |
| Waygrove Properties Limited | Financial services | 1962 |
| WCS Cleaning & Supplies Ltd | Wholesale & retail | 2025 |
| WCS Design Limited | Professional & scientific | 2023 |
| WD24 Investments Ltd | Financial services | 2026 |
| WE ARE Real Estate (London) Limited | Professional & scientific | 2000 |
| WE Buy ANY Commercial Limited | Real estate | 2026 |
| WE Care Group International Limited | Real estate | 2019 |
| WE Care International Mission (London) | Other services | 2012 |
| WE CRU X Limited | Information & communication | 2023 |
| WE Scrap IT 365 Limited | Wholesale & retail | 2025 |
| Weave Mart Limited | Wholesale & retail | 2025 |
| Weavesoft Ltd | Wholesale & retail | 2025 |
| Web Profits Consulting Limited | Information & communication | 2011 |
| Webrobotics Limited | Wholesale & retail | 2020 |
| Webstoria Limited | Information & communication | 2025 |
| Webtastic Designs Ltd | Professional & scientific | 2014 |
| Wedecor Limited | Other services | 2014 |
| Wedobuild Ltd | Construction | 2021 |
| Wefixcarwindscreens Ltd | Wholesale & retail | 2024 |
| Welbeck Cleaners Ltd | Other services | 2019 |
| Welcome Accountancy Ltd | Professional & scientific | 2019 |
| Welcome Assured Limited | Hospitality | 2022 |
| Welcome Gifts Limited | Wholesale & retail | 2021 |
| Well Life Limited | Health & social care | 2023 |
| Wellbeing Generation Ltd | Arts & recreation | 2015 |
| Wellbeing Incorporated Ltd | Health & social care | 2021 |
| Wellesley Trading Ltd | Professional & scientific | 2008 |
| Wellth Nation Ltd | Arts & recreation | 2026 |
| Welmere Limited | Professional & scientific | 2025 |
| Welstoke Limited | Real estate | 2012 |
| Welwyn&Rack Ltd | Hospitality | 2025 |
| Wembley Enterprise Ltd | Wholesale & retail | 2013 |
| Wendlow Sales Support & Training Ltd | Professional & scientific | 2026 |
| Weng WAH Buffet Ltd | Hospitality | 2015 |
| Wensum Flow Limited | Real estate | 2024 |
| Werewolf One Limited | Information & communication | 2025 |
| Wesorcery Ltd | Administrative & support | 2026 |
| West Herts Security Trustee Limited | Professional & scientific | 2021 |
| West Hill Capital LLP | | 2013 |
| West Hill Capital Security Trustee Limited | Financial services | 2022 |
| West India Desserts Ltd | Hospitality | 2023 |
| West London Cabinetry Ltd | Construction | 2019 |
| West London Renovations and Design Ltd | Construction | 2016 |
| West Midlands School of Arts Ltd | Education | 2024 |
| West Street Features Ltd | Arts & recreation | 2021 |
| West View Court (Elstree) Limited | Professional & scientific | 1996 |
| Westbridge Projects Ltd | Construction | 2022 |
| Westbridge&Co Ltd | Wholesale & retail | 2026 |
| Westcott Village Limited | Other services | 2018 |
| Western AI Limited | Wholesale & retail | 2025 |
| Western Gaming Limited | Arts & recreation | 2024 |
| Western Intrust Limited | Wholesale & retail | 2019 |
| Western Lash Artist Limited | Other services | 2024 |