| Voltas Spa & Beauty Limited | Other services | 2017 |
| VOLTSTAY4EV Limited | Wholesale & retail | 2024 |
| VOX Broadcast Limited | Information & communication | 2022 |
| Voza Construction Limited | Construction | 2022 |
| VS Enterprises UK Limited | Wholesale & retail | 2008 |
| VS Medical Services Limited | Health & social care | 2018 |
| Vsrc UK Limited | Information & communication | 2023 |
| VSY Services Ltd | Transport & logistics | 2016 |
| VU Limited | Arts & recreation | 1995 |
| Vvgm Ltd | Transport & logistics | 2025 |
| Vvventures International UK Ltd | Wholesale & retail | 2021 |
| Vyktoria Construction Ltd | Construction | 2016 |
| W a M.O.T Centre Ltd | Wholesale & retail | 2018 |
| W Dental Limited | Health & social care | 2020 |
| W J Plant Services Limited | Administrative & support | 2021 |
| W4 Physio Ltd | Health & social care | 2024 |
| WA Recruitment Services Limited | Administrative & support | 2017 |
| Wainwright Automotive Solutions Ltd | Wholesale & retail | 2026 |
| Waldegrave Estates Limited | Real estate | 2013 |
| Waldegrave Park Limited | Real estate | 1977 |
| Wallsy Productions Ltd | Information & communication | 2016 |
| Walpole Garden Construction Limited | Administrative & support | 2006 |
| Walpole Gardens Freehold 2000 Limited | Real estate | 2000 |
| Walpole Gardens Management Limited | Households | 2001 |
| Walter Hammerton & Company Limited | Transport & logistics | 1914 |
| Ward Davy Ltd | Health & social care | 2016 |
| Warpaint Ltd | Other services | 2025 |
| Warring & Co Ltd | Information & communication | 2025 |
| Wasing Property Services Limited | Construction | 2014 |
| Waste NO Time Ltd | Water & waste | 2019 |
| Watergate Fire Sprinklers Limited | Construction | 2015 |
| Waterlily Childminding Ltd | Health & social care | 2026 |
| Wattcom Limited | Construction | 2012 |
| Watts Consultants Limited | Information & communication | 2001 |
| Wave Source Training Ltd | Professional & scientific | 2023 |
| Waveform Broadcast Engineering Ltd | Information & communication | 2006 |
| Ways to Play Today LLP | | 2025 |
| WCP Consultants Limited | Professional & scientific | 2012 |
| WE ARE ALL Media Ltd | Professional & scientific | 2022 |
| WE ARE Intrepid Ltd | Other services | 2021 |
| WE ARE Tonic Ltd | Professional & scientific | 2019 |
| WE ARE Womain Ltd | Professional & scientific | 2025 |
| WE Clean (Cleaning Co) Ltd | Administrative & support | 2023 |
| WE Go Full Circle Ltd | Wholesale & retail | 2022 |
| WE Know Energy Ltd | Construction | 2023 |
| WE Make Footballers Kingston Area LLP | | 2018 |
| Wealthtree Technologies Ltd | Financial services | 2023 |
| Wearout Rental Limited | Wholesale & retail | 2020 |
| Weave.Tech Limited | Information & communication | 2017 |
| WEG Consulting Ltd | Professional & scientific | 2024 |
| Weisguy Entertainment UK Ltd | Arts & recreation | 2025 |
| Wellmanor Limited | Professional & scientific | 1978 |
| WELLNESS360 Ltd | Arts & recreation | 2025 |
| Wells RSB Ltd | Construction | 2018 |
| Wernham Construction Ltd | Construction | 2025 |
| Werr App Limited | Information & communication | 2025 |
| West Car Spa Limited | Wholesale & retail | 2025 |
| West END Venture Consulting Limited | Professional & scientific | 2024 |
| West London Blinds Limited | Construction | 2014 |
| West London Pest Control (West) Limited | Administrative & support | 2016 |
| West London Spraying Co. Ltd | Construction | 2026 |
| West London Wellbeing Services Ltd | Health & social care | 2025 |
| West London WHU Ltd | Health & social care | 2019 |
| West One ENT. Ltd. | Information & communication | 2012 |
| West Safe Spark Ltd | Construction | 2025 |
| West Thames Physiotherapy Ltd | Health & social care | 2013 |
| Westbourne Trading London Ltd | Financial services | 2023 |
| Westend Apartments Preston Limited | Real estate | 2004 |
| Western Avenue Property Limited | Construction | 2022 |
| Westwood Digital Ltd | Information & communication | 2025 |
| Wharfstone Estates Ltd | Real estate | 2025 |
| What IF IT Were Possible? Ltd | Information & communication | 2024 |
| Whisky Bath Ltd | Wholesale & retail | 2021 |
| Whisperers' Consultants Limited | Information & communication | 2013 |
| White Cloud Technology Limited | Information & communication | 2024 |
| White Graphite Limited | Wholesale & retail | 2018 |
| White Rose Advisory Limited | Administrative & support | 2015 |
| White Rose Communications Ltd | Professional & scientific | 2024 |
| White Rose Modern Funerals Limited | Other services | 2019 |
| Whitefield Surgical Limited | Health & social care | 2018 |
| Whitenoise Enterprises Ltd | Information & communication | 2025 |
| Whitstable Properties Limited | Construction | 1998 |
| Whitton Barbers Ltd | Other services | 2019 |
| Whitton Cafe Ltd | Hospitality | 2018 |
| Whitton Close Residents Company Limited | Households | 1974 |
| Whitton DRY Cleaners Ltd | Other services | 2017 |
| Whitton Food & Wine Ltd | Wholesale & retail | 2019 |
| Whitton Fresh Kebab Ltd | Hospitality | 2025 |
| Whitton Home FIX Ltd | Wholesale & retail | 2018 |
| Whitton Pet Centre Limited | Wholesale & retail | 2010 |
| Whitton Road Ltd | Real estate | 2023 |
| Whitton Ventures Ltd | Hospitality | 2025 |
| Whitton Village Limited | Construction | 2016 |
| Whitton's Tyres Ltd | Wholesale & retail | 2023 |
| Widdledev Limited | Information & communication | 2012 |
| Wifi-Ink Limited | Information & communication | 2016 |
| Wigmore RE Ltd | Professional & scientific | 2026 |
| Wild PIE in the Sky Ltd | Wholesale & retail | 2024 |
| Will Instructions Limited | Other services | 2006 |
| Willendorf Solutions Ltd | Professional & scientific | 2025 |