| Willsecure Systems Ltd | Wholesale & retail | 2019 |
| Willsoon Ltd | Transport & logistics | 2017 |
| Wilman Properties Group Limited | Real estate | 2025 |
| Wilmot Holdco Limited | Financial services | 2026 |
| Wilsher Rail Limited | Construction | 2016 |
| Wilson Bros Transport Ltd | Transport & logistics | 2023 |
| Wilson Clinical Education Ltd | Education | 2026 |
| Wilson Exterior Cleaning Ltd | Administrative & support | 2022 |
| Wilson Knight Property Agents Limited | Real estate | 2014 |
| Wilsons Firewood Limited | Wholesale & retail | 2024 |
| Wilsons Trading Company Limited | Wholesale & retail | 2025 |
| Wilsons Waste Ltd | Water & waste | 2025 |
| Windcourt Ltd. | Financial services | 2006 |
| Windcourt Restaurants Limited | Hospitality | 2014 |
| Windfab Ltd | Manufacturing | 2024 |
| Windmill Media Limited | Information & communication | 2003 |
| Window Tech Systems Limited | Real estate | 1986 |
| Windows & Doors of Bawtry Ltd | Construction | 2021 |
| Windsor Energy and Resources Limited | Energy | 2025 |
| Windy Ridge Property Ltd | Construction | 2025 |
| Wine Corner Ltd | Wholesale & retail | 2004 |
| Winfrow Plumbing & Heating Ltd | Construction | 2020 |
| Wing and a Prayer Music Limited | Administrative & support | 2004 |
| Wingtop Limited | Extraterritorial | 2013 |
| Winks Joinery Limited | Construction | 2016 |
| Winnard Property Limited | Real estate | 2024 |
| Winsford Gateway Site 1 Management Company Limited | Real estate | 2022 |
| Winsford Gateway Site 1 Plot 3 Management Company Limited | Real estate | 2022 |
| Wintech Holdings Limited | Financial services | 2022 |
| Wintech Modular Projects Ltd | Manufacturing | 2007 |
| Wintech Timber Limited | Wholesale & retail | 2016 |
| Winter Valets Ltd | Administrative & support | 2023 |
| Wipek Ltd | Information & communication | 2025 |
| Wired Electrical Installations (UK) Limited | Information & communication | 2014 |
| Wirquin Ltd | Wholesale & retail | 1987 |
| Wise Fortune Ltd | Information & communication | 2022 |
| Wise Tortoise Holding Limited | Financial services | 2019 |
| Wise Unity Holding Limited | Financial services | 2022 |
| Wiseton Developments Limited | Real estate | 2000 |
| Wiseton Developments Property Company Ltd | Real estate | 2024 |
| Wiseton Homes Limited | Extraterritorial | 2014 |
| Wiseton Limited | Agriculture & fishing | 2020 |
| Wiseton Property Management Company Limited | Households | 1986 |
| Wiseton Securities Limited | Real estate | 1931 |
| Wiseway Holdings Limited | Transport & logistics | 2024 |
| Wish Collaboration Limited | Administrative & support | 2023 |
| Wishing Gate Lettings Limited | Real estate | 2016 |
| Wisky & Neks Ltd | Information & communication | 2025 |
| Wisla Extra Limited | Wholesale & retail | 2024 |
| Wisla Food Store Limited | Wholesale & retail | 2018 |
| Wisniewski Solutions Ltd | Administrative & support | 2025 |
| Witchprint Ltd | Manufacturing | 2024 |
| Withernsea 16 Ltd | Administrative & support | 2016 |
| Witnessinvest Ltd | Financial services | 2021 |
| WJ Scott & Sons (Properties) Limited | Professional & scientific | 2014 |
| WJA Properties (Doncaster) Ltd | Real estate | 2018 |
| WJD Repairs Limited | Wholesale & retail | 2015 |
| WKH Properties Ltd | Real estate | 2024 |
| WM Lincoln Limited | Professional & scientific | 2024 |
| WM Trans Ltd | Transport & logistics | 2018 |
| WMJ Drilling Ltd | Construction | 2017 |
| Wmsonhire Ltd | Transport & logistics | 2016 |
| WNF Property Development Limited | Real estate | 2024 |
| WNF Property Services Limited | Other services | 2021 |
| WNG Limited | Professional & scientific | 2019 |
| Wobblefox Ltd | Extraterritorial | 2026 |
| Wobbly Stool Ltd | Hospitality | 2024 |
| Wode Holdings Limited | Financial services | 2025 |
| Wojciech Sobecki Ltd | Transport & logistics | 2022 |
| Wold Skip Hire Limited | Water & waste | 2018 |
| Wolds View Residential Homes Limited | Wholesale & retail | 2009 |
| Wolex Properties Limited | Real estate | 2025 |
| Wolf Freight Ltd | Transport & logistics | 2025 |
| Wolf Moon Consulting Ltd | Professional & scientific | 2018 |
| Wolken Consulting Limited | Information & communication | 2021 |
| Wolr UK Ltd | Wholesale & retail | 2021 |
| Wolsten Homes Investments Ltd | Real estate | 2025 |
| Womacks of Bawtry Ltd | Wholesale & retail | 2010 |
| Women in Supported Housing C.I.C. | Hospitality | 2013 |
| Womersley Rentals Ltd | Hospitality | 2025 |
| Womersley Timber Ltd. | Wholesale & retail | 2024 |
| Wonderful 888 Ltd | Hospitality | 2019 |
| Wonderful Ornaments Ltd | Wholesale & retail | 2021 |
| Wonderwall Plastering & Partitions Ltd | Construction | 2021 |
| Wood Avenue Development Ltd | Construction | 2025 |
| Wood Mech Services Ltd | Professional & scientific | 2024 |
| Wood Training Ltd | Education | 2018 |
| Woodfield Highway Engineering Services Limited | Professional & scientific | 2015 |
| Woodfield Leisure Holdings Limited | Hospitality | 2017 |
| Woodfield Squash and Leisure Club C.I.C. | Arts & recreation | 2015 |
| Woodhouse Caravan Sales Limited | Wholesale & retail | 2016 |
| Woodhouse Cues Ltd | Wholesale & retail | 2025 |
| Woodhouse Grange Fishery Ltd | Agriculture & fishing | 2004 |
| Woodhouse Lane Development Company Limited | Construction | 2004 |
| Woodhouse Plastering Limited | Construction | 2004 |
| Woodland Croft Properties Ltd | Real estate | 2019 |
| Woodlands Valeting Service Ltd | Wholesale & retail | 2025 |
| Woodruff Hill Wealth Management Limited | Professional & scientific | 2017 |
| Woods END Developments Limited | Real estate | 2021 |
| Woods of Carcroft Limited | Wholesale & retail | 2021 |