| Wooloff Group Ltd | Wholesale & retail | 2024 |
| Woolsheep Limited | Hospitality | 2018 |
| Working Academy Limited | Professional & scientific | 2024 |
| Workingtonretials Ltd | Wholesale & retail | 2026 |
| Worksafe Consulting Limited | Administrative & support | 2006 |
| Worksforyou.Com Limited | Information & communication | 2026 |
| Workshop DIY Limited | Wholesale & retail | 2012 |
| World of Shawls Ltd | Other services | 2014 |
| World of Youth Aesthetics Supplies Ltd | Other services | 2025 |
| World Retro Gaming Ltd | Wholesale & retail | 2019 |
| World Textile Information Network Limited | Information & communication | 2005 |
| Worldbridge Travel Ltd | Information & communication | 2026 |
| Worldmart Yorkshire Limited | Wholesale & retail | 2023 |
| Worldwide Banqueting Ltd | Hospitality | 2020 |
| Worldwide Islamic Cultural & Educational Organisation Limited | Education | 2008 |
| Worldwide Securities Services Limited | Administrative & support | 2000 |
| Worldwide Shop Ltd | Wholesale & retail | 2024 |
| Worldwide Supplier Ltd | Wholesale & retail | 2025 |
| WORLDWIDESELLER-5 Ltd | Wholesale & retail | 2024 |
| Worth Moore Ltd | Professional & scientific | 2023 |
| Worth Valley Mews Management Company Limited | Households | 2014 |
| Worthpratt Ltd | Transport & logistics | 2026 |
| Worx Media Limited | Professional & scientific | 2025 |
| WOW! Lifestyle Limited | Manufacturing | 2008 |
| WP Deal Fuel Limited | Wholesale & retail | 2023 |
| WPE Ltd | Professional & scientific | 2025 |
| WPF Solutions UK Limited | Administrative & support | 2018 |
| Wppixel Ltd | Wholesale & retail | 2023 |
| WPS Foods Ltd | Wholesale & retail | 2026 |
| WR Resourcing Ltd | Administrative & support | 2022 |
| WR Suppressions Ltd | Professional & scientific | 2023 |
| Wrapid Investments Limited | Financial services | 2015 |
| Wraths Cars Sales Ltd | Wholesale & retail | 2025 |
| Wrenbeck News & Offlicence Otley Ltd | Wholesale & retail | 2024 |
| Wrenchwise Limited | Wholesale & retail | 2023 |
| Wrenegade Studios Ltd | Manufacturing | 2023 |
| Wressell's Limited | Construction | 2003 |
| WRF Building & Decorating Limited | Construction | 2022 |
| WRF Heating & Electrical Engineers Limited | Construction | 2024 |
| Write & Wave Ltd | Information & communication | 2025 |
| Wrks N Prgrss Limited | Professional & scientific | 2019 |
| Wrose Autos Ltd | Wholesale & retail | 2025 |
| Wrose Building Services Ltd | Administrative & support | 2025 |
| Wrose Developments Limited | Construction | 1984 |
| Wrose Elite Plumbing & Bathrooms Ltd | Wholesale & retail | 2020 |
| Wrose Management Company Ltd | Real estate | 2026 |
| Wrose Properties Ltd | Real estate | 2024 |
| Wrose Retail Limited | Wholesale & retail | 2023 |
| Wrose Village Cars Limited | Transport & logistics | 2009 |
| WS Design Ltd | Professional & scientific | 2022 |
| Wsib Ltd | Hospitality | 2019 |
| WSP EOT Limited | Extraterritorial | 2023 |
| WSW Bradford Ltd | Hospitality | 2022 |
| WSY PUB Management Limited | Hospitality | 2024 |
| Wsyd Ltd | Wholesale & retail | 2023 |
| WTB Limited | Construction | 2018 |
| WTG (UK) Limited | Financial services | 1996 |
| WTM Events Limited | Arts & recreation | 2022 |
| WTN Enterprise Limited | Administrative & support | 2018 |
| Wukd Limited | Transport & logistics | 2022 |
| Wunder Crumble Delivery Limited | Hospitality | 2024 |
| Wunder Crumble Limited | Wholesale & retail | 2023 |
| Wuthering Heights Limited | Professional & scientific | 2011 |
| WVA Holdings Limited | Manufacturing | 2003 |
| WVF Limited | Hospitality | 2023 |
| WW Investment Partners Ltd | Real estate | 2021 |
| WW MOT Station Ltd | Wholesale & retail | 2024 |
| Wwad Ltd | Professional & scientific | 2025 |
| WY Basketball CIC | Arts & recreation | 2023 |
| WY Leisure Limited | Hospitality | 2024 |
| Wyke Autocentre Ltd | Wholesale & retail | 2021 |
| Wyke Community and Children`S Centre Limited | Health & social care | 2008 |
| Wyke Health Care Ltd | Public administration | 2025 |
| Wyke Holdings Limited | Real estate | 2022 |
| Wyke Ltd | Wholesale & retail | 2025 |
| Wyke MOT Centre Ltd | Administrative & support | 2018 |
| Wyke Opticians Ltd | Wholesale & retail | 2017 |
| Wyke Projects Ltd | Construction | 2021 |
| Wyke Rugby (2020) Ltd | Arts & recreation | 2020 |
| Wyndham Clarke Accountants Ltd | Professional & scientific | 2025 |
| Wyndle Limited | Construction | 2004 |
| WYR Trading Ltd | Manufacturing | 2026 |
| WYS Enterprise Ltd | Other services | 2020 |
| WYS Services Limited | Wholesale & retail | 2017 |
| Wyse Education Ltd | Education | 2023 |
| Wyse Retail Ltd | Wholesale & retail | 2015 |
| WZ Tech Ltd | Professional & scientific | 2024 |
| WZR Holdings Limited | Real estate | 2023 |
| X Project Pulse Limited | Wholesale & retail | 2015 |
| X-Chaq Ltd | Professional & scientific | 2024 |
| X11 Homeware Ltd | Wholesale & retail | 2018 |
| X29 Hub Ltd | Wholesale & retail | 2026 |
| X4VY Limited | Wholesale & retail | 2025 |
| X5 Autos Ltd | Wholesale & retail | 2025 |
| XAM Asbestos Ltd | Professional & scientific | 2024 |
| XANADU1816 Limited | Wholesale & retail | 2006 |
| Xantek Wholesale Supplies Limited | Wholesale & retail | 2023 |
| XAS Logistics Ltd | Transport & logistics | 2020 |
| Xatmax Limited | Wholesale & retail | 2019 |
| Xatrix Automotive Limited | Wholesale & retail | 2023 |