| Wooden Stock Ltd | Wholesale & retail | 2017 |
| Woodfield Project Services Limited | Construction | 2005 |
| Woodford House Intelligence Solutions Ltd | Information & communication | 2023 |
| Woodhall Health Ltd | Health & social care | 2024 |
| Woodhall Spa Caravan Services Limited | Administrative & support | 2011 |
| Woodhall Spa Country Show Limited | Arts & recreation | 2009 |
| Woodola Group Ltd | Construction | 2025 |
| Woodola Homes Ltd | Construction | 2025 |
| Woods Plastering & Drylining Ltd | Construction | 2020 |
| Woodsend Property Limited | Financial services | 2025 |
| Woodside Falconry Limited | Extraterritorial | 2022 |
| Woodstock Laundry UK Limited | Wholesale & retail | 2020 |
| Woodvale Plumbing Company Ltd | Construction | 2026 |
| Woodward Green Property Ltd | Real estate | 2022 |
| Woodworks Creations Ltd | Manufacturing | 2025 |
| Woodwright Developments Ltd | Construction | 2023 |
| Woody Fire Ltd | Administrative & support | 2024 |
| Woody's Consultants Ltd | Construction | 2010 |
| Wool IS the Answer Ltd | Wholesale & retail | 2018 |
| Woollen Engineering and Design Ltd | Professional & scientific | 2014 |
| Wordadd Limited | Other services | 1994 |
| Work Psychology Limited | Professional & scientific | 2007 |
| Working Pictures Limited | Information & communication | 1995 |
| Workmule International Ltd | Education | 2020 |
| WORKS4 Limited | Construction | 2012 |
| Worlaby Woodlands Development Company Limited | Construction | 2024 |
| Worldwide Academic Solutions Ltd | Professional & scientific | 2024 |
| Wosiak Limited | Transport & logistics | 2014 |
| WP & H Laird & Sons Unlimited | Agriculture & fishing | 2005 |
| WPH (Lincoln) Ltd. | Construction | 2013 |
| Wragby Fish Bar Limited | Hospitality | 2002 |
| Wrestera Property & Developments Ltd | Construction | 2026 |
| Wright Aviate Ltd | Manufacturing | 2026 |
| Wright Working Ltd | Professional & scientific | 2017 |
| Wrightbuild Construction & Landscaping Ltd | Construction | 2024 |
| Wrightcare Services Ltd | Health & social care | 2024 |
| Wrightway Motorcycles Ltd | Wholesale & retail | 2020 |
| Writedream Productions Ltd | Information & communication | 2014 |
| Wrrk Ltd | Information & communication | 2022 |
| Wryde 2 Limited | Real estate | 2017 |
| Wryde Limited | Real estate | 2010 |
| WS Wright Tipping Ltd | Water & waste | 2019 |
| WSC Medical Ltd | Health & social care | 2022 |
| WSG Properties Ltd | Real estate | 1974 |
| WV Property Lincoln Limited | Real estate | 2025 |
| WV Property Ltd | Real estate | 2022 |
| Wyldeman Ltd | Professional & scientific | 2019 |
| Wynmoor Property Investments Limited | Real estate | 2017 |
| Wyra AG Ltd | Manufacturing | 2026 |
| X-Press Legal Services Lincolnshire Ltd | Professional & scientific | 2022 |
| Xaman Spirits Limited | Wholesale & retail | 2024 |
| Xana Polewear Ltd | Wholesale & retail | 2020 |
| Xcel Windscreens Ltd | Wholesale & retail | 2026 |
| Xcell Roofing Ltd | Construction | 2025 |
| Xeeda Ltd | Real estate | 2024 |
| Xeric Limited | Administrative & support | 2010 |
| Xilver Limited | Information & communication | 2023 |
| Xkeys Stow Limited | Hospitality | 2016 |
| Xpert Autos Car & Commercials Ltd | Wholesale & retail | 2023 |
| Xpert Autos Direct Ltd | Wholesale & retail | 2025 |
| Xtract Accounting Limited | Professional & scientific | 2020 |
| Yaprak 104 Ltd | Hospitality | 2025 |
| Yarborough Projects Limited | Construction | 2023 |
| Yasmin Abbas Ltd | Health & social care | 2024 |
| Yate Rugby Football Club Ltd | Other services | 2019 |
| Yelhome Ltd | Real estate | 2025 |
| Yelland Savage Limited | Administrative & support | 2013 |
| Yellow Belly Media Ltd | Wholesale & retail | 2018 |
| Yellow Brick Road Daycare Ltd | Health & social care | 2011 |
| Yellow Brick Road Metheringham Ltd | Health & social care | 2024 |
| Yelsys Limited | Information & communication | 2012 |
| Yeovil Orthopaedic Clinic LLP | | 2016 |
| Yesway Limited | Information & communication | 2016 |
| Yetibytes Ltd | Information & communication | 2023 |
| YGB Warrington Limited | Hospitality | 2024 |
| Yick Consultancy Limited | Professional & scientific | 2024 |
| YM FIX Ltd | Construction | 2018 |
| Ymca Trading Company Limited | Hospitality | 1993 |
| YO YO in Beijing Ltd | Hospitality | 2007 |
| Yode Courier Ltd | Transport & logistics | 2022 |
| Yolk and Bloom Limited | Manufacturing | 2025 |
| York Engineering & Survey Ltd | Professional & scientific | 2024 |
| York Sills Limited | Construction | 2006 |
| Yorkshire Developments Limited | Construction | 2003 |
| Yorkshire Skin Care Ltd | Health & social care | 2013 |
| Yorlinc Limited | Information & communication | 2001 |
| Youff Couriers Ltd | Transport & logistics | 2015 |
| Your Choice Flooring Ltd | Construction | 2020 |
| Your Communications Limited | Information & communication | 2024 |
| Your Home Electrical Ltd | Construction | 2026 |
| Your IT Solutions (Lincs) Limited | Information & communication | 2026 |
| Your Mortgage Choice Ltd | Financial services | 2024 |
| Your Mortgage Hub Ltd | Financial services | 2015 |
| Your Neighbour Frank Ltd | Agriculture & fishing | 2025 |
| Your Property Hub Ltd | Extraterritorial | 2016 |
| Your Restorer Ltd | Manufacturing | 2024 |
| Your UK Selfcare and Wellbeing Ltd | Extraterritorial | 2021 |
| Yourhome Lincoln Ltd | Real estate | 2011 |
| Yourhome of Newark Limited | Wholesale & retail | 2020 |
| Youth Development Association Limited(The) | Education | 1981 |