| Won'T BE Limited | Other services | 2022 |
| Wona Limited | Information & communication | 2022 |
| Wonderbees Ltd | Health & social care | 2025 |
| Wondercharts Ltd | Professional & scientific | 2014 |
| Wonderdene Ltd | Real estate | 2023 |
| Wonderful Electric Limited | Administrative & support | 2006 |
| Wonderland Planning Limited | Professional & scientific | 2003 |
| Wonders of Candles Limited | Manufacturing | 2023 |
| Wonders Wholesale Ltd | Wholesale & retail | 2026 |
| Wooburn Holdings Limited | Financial services | 2018 |
| Wood Apple Ltd | Financial services | 2026 |
| Wood Design Solutions Ltd | Construction | 2023 |
| Woodcraft Bespoke Joinery Ltd | Manufacturing | 2019 |
| Wooden Window Service Ltd | Construction | 2014 |
| Woodfield Stores Limited | Wholesale & retail | 2015 |
| Woodgrange Mansions Limited | Households | 2002 |
| Woodhatch Service Company Limited | Professional & scientific | 2019 |
| Woodhill Crescent Limited | Real estate | 2025 |
| Woodhouse Builders & Developers Limited | Construction | 2010 |
| Woodhouse Care Homes Limited | Administrative & support | 2004 |
| Woodhouse Healthcare Limited | Wholesale & retail | 2022 |
| Woodland and Welbeck Ltd | Real estate | 2022 |
| Woodland House Investments Limited | Real estate | 2017 |
| Woodlands (Northwood) Management Company Limited | Households | 2013 |
| Woodlands Builders Limited | Construction | 1999 |
| Woodlands Country Estates Limited | Financial services | 2022 |
| Woodlands Residents Association Limited | Households | 1961 |
| Woodman Farrow Limited | Information & communication | 2011 |
| Woodmans Farm Management Limited | Real estate | 1984 |
| Woodpecker Close (Harrow Weald) Management Limited | Households | 1995 |
| Woodridings (Hatch END) Limited | Households | 1969 |
| Woodside Park Management Company Limited | Households | 1981 |
| Woodthorpe Ventures Ltd | Hospitality | 2016 |
| Woodtrans Limited | Transport & logistics | 2017 |
| Woodz Electrical Services Ltd | Construction | 2026 |
| Woof & Purr TLC Ltd | Other services | 2024 |
| Woof of the WOO Limited | Arts & recreation | 2017 |
| Wooster Studio Ltd | Information & communication | 2022 |
| Word Perfect Ltd | Professional & scientific | 2017 |
| Wordcraftier Ltd | Information & communication | 2025 |
| Wordzilla Ltd | Professional & scientific | 2023 |
| Work Experience Partners Limited | Education | 2012 |
| Work of Art Services Ltd | Construction | 2024 |
| Work of Wonders Ltd | Manufacturing | 2026 |
| Work Time Tool Ltd | Information & communication | 2013 |
| Workforce Compliance Limited | Administrative & support | 2018 |
| Workplace Kitchen Design Ltd | Construction | 2015 |
| Workwithme Limited | Information & communication | 2018 |
| World Champions League UK Ltd | Arts & recreation | 2024 |
| World Federation of Advertisers London Limited | Professional & scientific | 2024 |
| World Food Companies Network Limited | Manufacturing | 2019 |
| World Food Company Networks Limited | Hospitality | 2020 |
| World Future Forum Ltd | Professional & scientific | 2025 |
| World FX Limited | Financial services | 2012 |
| World of Compass Tours Limited | Professional & scientific | 2025 |
| World One Dollar Shop Ltd | Wholesale & retail | 2025 |
| World Security Group Ltd | Administrative & support | 2017 |
| World Traders International Ltd | Wholesale & retail | 2025 |
| World Wide Security Limited | Administrative & support | 2018 |
| World's Herb & Spice Palette Ltd | Wholesale & retail | 2025 |
| Worldcart Traders Ltd | Wholesale & retail | 2025 |
| Worldcupsports Ltd | Education | 2026 |
| Worldwide Airport Concierge Services Limited | Administrative & support | 2023 |
| Worldwide Airport Services Limited | Administrative & support | 2023 |
| Worldwidestore Ltd | Wholesale & retail | 2026 |
| Worli Limited | Professional & scientific | 2021 |
| Worple Consulting Limited | Professional & scientific | 2019 |
| Worple Management Limited | Real estate | 2023 |
| Worple Way Limited | Real estate | 2016 |
| Worqcompany Accounting Ltd | Professional & scientific | 2022 |
| Worqcompany UK Ltd | Wholesale & retail | 2022 |
| Worrld WE Want Limited | Professional & scientific | 2019 |
| Worstead Developments LLP | | 2013 |
| Worthwhile Shop Ltd | Wholesale & retail | 2024 |
| Woszczynski Holdings Ltd | Financial services | 2025 |
| Wovv Technologies Limited | Other services | 2021 |
| WOW DOP Ltd | Information & communication | 2021 |
| WOW Jump Ltd | Information & communication | 2022 |
| WOW Party Hire and Events Ltd | Arts & recreation | 2022 |
| WP Productions Ltd | Real estate | 2026 |
| WPF Heating Ltd | Construction | 2017 |
| WPG Refurbishment Ltd | Construction | 2012 |
| WPM Properties Limited | Real estate | 2015 |
| WR Investments Group Ltd | Real estate | 2021 |
| Wraith Store Ltd | Wholesale & retail | 2026 |
| Wrap and Pack Ltd | Wholesale & retail | 2017 |
| Wrecked 47 Ltd | Information & communication | 2024 |
| Wright Commercial Limited | Real estate | 2022 |
| Wrightmans Plans Limited | Administrative & support | 2007 |
| Wright’S Homes Ltd | Construction | 2021 |
| WRL Investments Ltd | Real estate | 2021 |
| WS North Limited | Financial services | 2025 |
| WS9 Limited | Construction | 2022 |
| Wt&C Limited | Hospitality | 2022 |
| WTN Body & Mechanics Ltd | Manufacturing | 2026 |
| Wu&Co Limited | Professional & scientific | 2010 |
| WV6 Limited | Construction | 2022 |
| WVM Holdings Ltd. | Construction | 2019 |
| WWR Imports Limited | Wholesale & retail | 2026 |
| Wwstay Limited | Administrative & support | 2012 |