| WD Enterprises Ltd | Transport & logistics | 2013 |
| WE ARE AUM Ltd | Wholesale & retail | 2023 |
| WE ARE Electric Limited | Financial services | 2019 |
| WE ARE Local Ltd | Professional & scientific | 2011 |
| WE ARE Rock Ltd | Administrative & support | 2021 |
| WE Buy ANY Property and Houses Ltd | Real estate | 2024 |
| WE Buy Your Motor Ltd | Wholesale & retail | 2020 |
| WE Clean 24/7 Limited | Administrative & support | 2025 |
| WE DO Drinks Limited | Professional & scientific | 2025 |
| WE FIX Boiler Ltd | Construction | 2020 |
| WE Like Learning Ltd. | Education | 2013 |
| WE Network Limited | Other services | 2026 |
| WE Want IT Limited | Other services | 2022 |
| Wealth Church Holdings Ltd | Hospitality | 2024 |
| Wealth Church Management Ltd | Real estate | 2024 |
| WEARE7DAYSSECURITY Ltd | Administrative & support | 2025 |
| Weatherguard Roofing &Building Services Ltd | Construction | 2023 |
| Weathersheild Roofing Ltd | Construction | 2024 |
| Weathershield Double Glazing Ltd | Construction | 2024 |
| Weathervane House Residents Association Limited | Hospitality | 1970 |
| Web AI Engines Ltd | Information & communication | 2025 |
| Webaie Ltd | Information & communication | 2018 |
| Webbs Garage Limited | Wholesale & retail | 2007 |
| Webcom Systems Limited | Information & communication | 2020 |
| Webemporium Ltd | Wholesale & retail | 2020 |
| Webfixuk Ltd | Information & communication | 2023 |
| Website Design & Online Marketing Ltd | Administrative & support | 2022 |
| Website KIT Ltd | Information & communication | 2016 |
| Websouls Ltd | Information & communication | 2016 |
| Websperia Ltd | Information & communication | 2025 |
| Webteck Consultancy Ltd | Professional & scientific | 2011 |
| Webuycrypto Limited | Other services | 2021 |
| Webuynfts Limited | Extraterritorial | 2022 |
| Wecreate Digital Solutions Limited | Information & communication | 2021 |
| Weight Watchers UK Holdings Ltd | Professional & scientific | 1999 |
| Welding Limited | Wholesale & retail | 2017 |
| Well and UP Limited | Wholesale & retail | 2025 |
| Well Hall Kebab Ltd | Hospitality | 2018 |
| Welland Apartments Ltd | Real estate | 1979 |
| Wellington Garden Residents Management Company Ltd | Households | 2022 |
| Wellness and Care Ltd | Health & social care | 2023 |
| Wellness by J&T Ltd | Health & social care | 2024 |
| Wellsprings Healthcare Ltd | Health & social care | 2022 |
| Weltech Consulting Ltd | Information & communication | 2009 |
| Welways BDS Estates Ltd | Real estate | 2022 |
| Welwyn Investment Holding Ltd | Real estate | 2026 |
| Wembley Clinic Ltd | Health & social care | 2023 |
| Wendy Comms Ltd | Professional & scientific | 2025 |
| Wentworth Cars Taxis Ltd | Transport & logistics | 2019 |
| Weroof London Ltd | Construction | 2025 |
| Werrens Bedford Ltd | Wholesale & retail | 2021 |
| Wesleyan Care Ltd | Public administration | 2019 |
| West City Developments Ltd | Construction | 2020 |
| West Co Electrical Services Ltd | Construction | 2022 |
| West END Sparks Ltd | Construction | 2022 |
| West London Accounting Solutions Limited | Professional & scientific | 2025 |
| West London Associates Limited | Professional & scientific | 2013 |
| West London United Football Club Limited | Other services | 2020 |
| West One Homes Ltd | Construction | 2013 |
| West Prime Industrial Ltd | Manufacturing | 2025 |
| West Roofing Limited | Construction | 2025 |
| West World Sourcing Limited | Construction | 2019 |
| Westbridge (UK) Limited | Administrative & support | 2001 |
| Westbush Limited | Real estate | 2011 |
| Westcroft AM Ltd | Real estate | 2020 |
| Westcroft Constructions Services Ltd | Construction | 2020 |
| Westcroft Contracting Limited | Construction | 2025 |
| Westcroft Group Ltd | Financial services | 2020 |
| Westcroft Property Services Limited | Construction | 2025 |
| Westend Choice Ltd | Wholesale & retail | 2019 |
| Westend Global Ltd | Other services | 2025 |
| Westerings Limited | Households | 2022 |
| Western Properties Investment Ltd | Construction | 2024 |
| Western Property Holdings Ltd | Real estate | 2026 |
| Westerns Bedroom and Kitchens Limited | Manufacturing | 2011 |
| Westerton Care LLP | | 2011 |
| Westfin Accountants Ltd | Professional & scientific | 2025 |
| Westgate Education Consultancy Private Limited | Professional & scientific | 2021 |
| Westminster College Global Campus Ltd | Education | 2025 |
| Westminster International College Ltd | Education | 2025 |
| Westminster Sales Limited | Wholesale & retail | 2026 |
| Weston Assets Ltd | Real estate | 2022 |
| Westpointdigitalproductions Limited | Wholesale & retail | 2024 |
| Westside Joinery & Construction Limited | Construction | 2016 |
| Westside Mortgages Ltd | Financial services | 2021 |
| Westway Enterprises Limited | Wholesale & retail | 2025 |
| Westwind Consulting Limited | Information & communication | 2010 |
| Westwood Buildings Ltd | Real estate | 2020 |
| Westwood Real Estate Limited | Real estate | 2023 |
| Westwood Smile Care Ltd | Health & social care | 2012 |
| Wetko Limited | Other services | 2019 |
| Wexham Asset Management Ltd | Real estate | 2020 |
| Wexham Construction Limited | Construction | 2020 |
| Wexham Convenience Stores Ltd | Wholesale & retail | 2011 |
| Wexham Estates Limited | Real estate | 2020 |
| Wexham Homes Limited | Real estate | 2016 |
| Wexham Investments Limited | Construction | 2019 |
| Wexham Place Residents Association Limited | Households | 1980 |
| Wexham Property Investments Ltd | Real estate | 2019 |
| Wexham Property Limited | Real estate | 2024 |