| Westvale Technologies Limited | Information & communication | 2025 |
| Westview Repairs & Autos Ltd | Wholesale & retail | 2025 |
| Wetheralds of Harrogate Ltd | Other services | 2015 |
| Wetherby Dales Limited | Professional & scientific | 2023 |
| WH Healthcare Ltd | Health & social care | 2020 |
| Whaites Consultancy Yorkshire Ltd | Professional & scientific | 2026 |
| Wharf Cafe Bar @ Sowerby Bridge Ltd | Hospitality | 2016 |
| Wharf Garage (Sowerby Bridge) Limited | Wholesale & retail | 1962 |
| Wharf Garage Limited | Wholesale & retail | 2016 |
| Wharfeside Renovations & Lettings Ltd | Real estate | 2017 |
| Whatscratch? Limited | Wholesale & retail | 2019 |
| Whcv Leasing Co Ltd | Administrative & support | 2019 |
| When SHE Rises Ltd | Professional & scientific | 2020 |
| Wherego Ltd | Extraterritorial | 2021 |
| Whinhowe Carr Ltd | Wholesale & retail | 2025 |
| Whiskett Hill Properties Ltd | Real estate | 2020 |
| Whispering Trees Care Limited | Health & social care | 2021 |
| White Box IT Limited | Information & communication | 2011 |
| White Horse (Halifax) Limited | Extraterritorial | 2014 |
| White Rose Cheer Ltd | Other services | 2017 |
| White Rose Education Limited | Education | 2017 |
| White Rose Fireplaces Ltd | Wholesale & retail | 2023 |
| White Rose Properties Limited | Real estate | 2025 |
| White Rose Residential Sales Limited | Construction | 2014 |
| White Rose Tree Care Ltd | Agriculture & fishing | 2024 |
| White Stork Nurseries Holdings Limited | Financial services | 2023 |
| White Stork Nurseries Limited | Education | 2023 |
| Whitegate Commercial Property Limited | Real estate | 2021 |
| Whitehill Financial Management Limited | Financial services | 2007 |
| Whiteinblue Limited | Professional & scientific | 2017 |
| Whiteley & SON Ltd. | Transport & logistics | 2007 |
| Whiteleys of Halifax Limited | Wholesale & retail | 1995 |
| Whiterock Business Consulting Limited | Professional & scientific | 2023 |
| Whittel Brickwork Ltd | Construction | 2022 |
| Wholehaus Developments and Consultancy Limited | Professional & scientific | 2024 |
| Whynn Consulting Ltd | Professional & scientific | 2025 |
| Wicken Property Management Company Ltd | Households | 2022 |
| Wicklore Ltd | Wholesale & retail | 2024 |
| Widson Limited | Professional & scientific | 2024 |
| Wild Polar Properties Ltd | Real estate | 2024 |
| Wilde Engineering Services Ltd | Professional & scientific | 2024 |
| Wildewalk Limited | Real estate | 1997 |
| Wildman Van Sales Limited | Other services | 2010 |
| Wiljay Trading Ltd | Wholesale & retail | 2018 |
| Wilkin Cowan Ltd | Professional & scientific | 2017 |
| Wilkinson Woodward Limited | Professional & scientific | 2012 |
| Will Briggs Consultancy Ltd | Information & communication | 2024 |
| William D Lister (Haulage) Limited | Transport & logistics | 1985 |
| William IV Halifax Ltd | Hospitality | 2021 |
| William the Fourth Limited | Hospitality | 2026 |
| Williams Brothers Halifax Ltd | Real estate | 2025 |
| Williams Walling Limited | Construction | 2007 |
| Willow Properties (Halifax) Limited | Real estate | 2002 |
| Willow Valley Engineering Limited | Professional & scientific | 2001 |
| Wills and Grace Ltd | Professional & scientific | 2025 |
| Wilsden 3 Piece Suite Centre Limited | Wholesale & retail | 1984 |
| Wilsonwelchwalker Ltd | Real estate | 2023 |
| Wilsthorpe Housing Association Limited | Households | 1996 |
| Windmill Tavern (Northowram) Limited | Hospitality | 2000 |
| Windows ARE Clean at Last Limited | Administrative & support | 2017 |
| Wing Sleep Ltd | Manufacturing | 2024 |
| Wingateway IT Solutions Ltd | Information & communication | 2015 |
| Winterburn Property Ltd | Real estate | 2022 |
| Winterburn Rentals Ltd | Real estate | 2024 |
| Wisebuydealz Ltd | Wholesale & retail | 2024 |
| With a V Limited | Education | 2004 |
| With Love Miss Munir Ltd | Manufacturing | 2024 |
| With YOU Midwifery Care Limited | Other services | 2020 |
| Withens Consulting Ltd | Professional & scientific | 2019 |
| Witt & SON Properties Limited | Real estate | 2006 |
| Witt & SON UK Holdings Limited | Manufacturing | 1993 |
| Witt Group - UK Service Limited | Administrative & support | 1965 |
| WJ Property Ltd | Hospitality | 2018 |
| WK Services (Northern) Limited | Manufacturing | 2010 |
| WL Building Services Limited | Construction | 2006 |
| WLM Inspection Ltd | Professional & scientific | 2026 |
| WM Developments Limited | Professional & scientific | 2011 |
| WMD Press Ltd | Information & communication | 2012 |
| Wolke Healthcare Limited | Health & social care | 2020 |
| Women's Activity Centre (WAC) CIC | Arts & recreation | 2015 |
| Women's Rights Network Ltd | Other services | 2022 |
| Womencentre Homes | Real estate | 2020 |
| Wonder Techsys Limited | Information & communication | 2022 |
| Wonderbees Retail Concept Inc Limited | Wholesale & retail | 2022 |
| Wood Family Partnership LLP | | 2021 |
| Wood Mechanical Engineering Limited | Professional & scientific | 2019 |
| Wood Wise Joinery Solutions Ltd | Construction | 2016 |
| Woodbine Breakers Ltd | Wholesale & retail | 2024 |
| Woodcock Mechanical Services Limited | Professional & scientific | 2025 |
| Woodcroft Estates Limited | Real estate | 2021 |
| Woodfield Enterprises Limited | Real estate | 2005 |
| Woodhall Mortgages Ltd | Financial services | 2016 |
| Woodhead and Company Consulting Limited | Wholesale & retail | 2018 |
| Woodland Buddies Limited | Education | 2026 |
| Woodlands Interiors Limited | Construction | 2003 |
| Woods & Woods Consultancy Ltd | Professional & scientific | 2019 |
| Woods Medical Services Ltd | Health & social care | 2025 |
| Woodsage Consulting Ltd | Professional & scientific | 2022 |
| Woodside Developments (Yorkshire) Limited | Real estate | 2022 |
| Woodside Direct Ltd | Wholesale & retail | 2024 |