| Winghing WOO UK Ltd | Wholesale & retail | 2023 |
| Wingnut Post Ltd | Information & communication | 2014 |
| Wings Sellco Limited | Financial services | 2023 |
| Winston Publishing Limited | Manufacturing | 2013 |
| With Love Project Ltd | Arts & recreation | 2016 |
| Wixlan Consultancy Limited | Information & communication | 2024 |
| WJ Global Trade Ltd | Wholesale & retail | 2025 |
| Wkii Property Ltd | Real estate | 2024 |
| WM Healthcare Providers Limited | Health & social care | 2018 |
| WM Properties Manchester Ltd | Construction | 2019 |
| WMA Property Limited | Real estate | 2011 |
| Women in Recruitment Leadership Limited | Professional & scientific | 2025 |
| Womencare Limited | Health & social care | 2025 |
| Wood Court Properties Ltd | Real estate | 2017 |
| Wood IT (26) Limited | Manufacturing | 2026 |
| Woodacre Limited | Real estate | 2020 |
| Woodpecker Engineering Limited | Construction | 2024 |
| Woodwork Interiors Ltd | Manufacturing | 2021 |
| Woody's Street Food Ltd | Hospitality | 2024 |
| Woolstone Nursery Ltd | Administrative & support | 2023 |
| Working With JEN Ltd | Professional & scientific | 2025 |
| World Depot Inc Ltd | Transport & logistics | 2018 |
| World of Teaching Ltd | Education | 2009 |
| World Port Inc Ltd | Transport & logistics | 2024 |
| Worldwalkers Publishing Ltd | Information & communication | 2017 |
| Worldwide Well-Being Ltd | Education | 2022 |
| Worsley Gardens Flat Management Limited | Households | 2004 |
| WOW Enterprises LLP | | 2010 |
| WOW Events Management LLP | | 2004 |
| WOW Publishing Ltd | Wholesale & retail | 2000 |
| Wraith London Limited | Wholesale & retail | 2018 |
| WRD Medical Ltd | Health & social care | 2019 |
| Wright GS Ltd | Professional & scientific | 2025 |
| WS Utilities Ltd | Construction | 2023 |
| WSL Investments Limited | Financial services | 2021 |
| WTS (UK) Ltd | Information & communication | 2010 |
| WWT Recruitment Limited | Administrative & support | 2025 |
| WYB Creative Limited | Information & communication | 2015 |
| Wyngate Developments Ltd | Construction | 2016 |
| Wyre Light (Fleetwood) Limited | Hospitality | 2018 |
| Wyson Limited | Construction | 2019 |
| Xavca Limited | Information & communication | 2009 |
| Xavier Mosh Ltd | Professional & scientific | 2018 |
| Xcel Business Psychology Ltd | Professional & scientific | 2020 |
| Xclear Limited | Manufacturing | 2023 |
| Xenia Estates Ltd | Real estate | 2019 |
| Xenia Estates Management Ltd | Households | 2023 |
| Xenia Estates Services Ltd | Real estate | 2019 |
| Xenia Lettings Ltd | Real estate | 2013 |
| Xenia Property Group Ltd | Financial services | 2021 |
| Xing's Property Ltd | Real estate | 2025 |
| XLALR6 Ltd | Health & social care | 2010 |
| Xorble Limited | Information & communication | 2026 |
| XYA Consulting Limited | Professional & scientific | 2015 |
| XYZ Electrical Ltd | Administrative & support | 2013 |
| Y Healthcare Services Limited | Professional & scientific | 2026 |
| Y. C. Plant Limited | Wholesale & retail | 2005 |
| YA2 Holdings Ltd | Financial services | 2026 |
| Yachew Holdings Limited | Financial services | 2020 |
| Yachtdecks.Com Ltd | Manufacturing | 2013 |
| Yakub London Ltd | Wholesale & retail | 2021 |
| Yakub Medical Services Limited | Extraterritorial | 2024 |
| Yanga Technologies Limited | Information & communication | 2018 |
| Yaqadoodle Childcare Academy Limited | Health & social care | 2019 |
| Yaqadoodle DOO Childcare Ltd | Health & social care | 2024 |
| Yard Burger Bar Limited | Hospitality | 2021 |
| Yasmin Foods Ltd | Hospitality | 2023 |
| Yasmin Lettings Ltd | Real estate | 2008 |
| Yasnad Limited | Health & social care | 2016 |
| Yates Financial Planning Ltd | Financial services | 1998 |
| YAU YAU Solution Limited | Wholesale & retail | 2023 |
| YB Advisory Limited | Professional & scientific | 2020 |
| YC Group Limited | Professional & scientific | 2007 |
| Yecheng Media UK Limited | Information & communication | 2011 |
| Yedwanacare Limited | Wholesale & retail | 2024 |
| Yeka Estates Ltd | Real estate | 2022 |
| Yello LAB Ltd | Wholesale & retail | 2026 |
| Yesh GLK Ltd | Real estate | 2019 |
| Ying DE Education Ltd | Education | 2010 |
| Ying DE Group Ltd | Professional & scientific | 2012 |
| Ying DE Investment Ltd | Professional & scientific | 2013 |
| Ying DE Lawyers Ltd | Professional & scientific | 2008 |
| Ying DE Property Ltd | Real estate | 2014 |
| Ying TAO Xuan Ltd | Wholesale & retail | 2022 |
| YL Construction Resourcing Ltd | Administrative & support | 2020 |
| Yndh Limited | Health & social care | 2023 |
| YOU Darling Ltd | Financial services | 2020 |
| Young Village Management (NW) Ltd | Real estate | 2019 |
| Your Club @ Brooklands Limited | Arts & recreation | 2021 |
| Your Home Tech GUY Ltd | Other services | 2025 |
| Your Inner Balance Ltd | Professional & scientific | 2020 |
| Your Life Protect Ltd | Professional & scientific | 2026 |
| Your Life Stories Ltd | Information & communication | 2026 |
| Your New Space (NW) Ltd | Construction | 2021 |
| Your Payment Consultants Ltd | Professional & scientific | 2021 |
| Ysatiss Properties Ltd | Real estate | 2018 |
| YU Development Ltd | Manufacturing | 2025 |
| YU Group Holdings Ltd | Financial services | 2025 |
| Yuen Fung Engineering Limited | Construction | 2020 |
| YUM Manchester Ltd | Hospitality | 2024 |