| Woodtop Investments Ltd | Other services | 2017 |
| Woodys Wood Ltd | Wholesale & retail | 2024 |
| Woolhouse Underlay Ltd | Wholesale & retail | 2025 |
| Word Witch Ltd | Professional & scientific | 2021 |
| Work Formations Ltd | Other services | 2018 |
| Working the Streets Limited | Hospitality | 2013 |
| Worlds Smoke Ltd | Wholesale & retail | 2025 |
| Worth Valley Care Services Ltd | Health & social care | 2011 |
| Worth Wear Ltd | Wholesale & retail | 2026 |
| Worthington Homes (Yorkshire) Limited | Construction | 2019 |
| Worthy of Limited | Wholesale & retail | 2021 |
| WPA97 Ltd | Households | 2017 |
| WPK Holdings Ltd | Financial services | 2023 |
| WPR Enterprises Ltd | Hospitality | 2024 |
| WPS Holiday Lettings Ltd | Hospitality | 2024 |
| Wrangthorn Ltd. | Professional & scientific | 2020 |
| Wray's MAID2CLEAN Huddersfield Ltd | Administrative & support | 2019 |
| WRC Flooring Ltd | Wholesale & retail | 2023 |
| Wrecking Ball Productions Limited | Information & communication | 2022 |
| Wright Architecture Limited | Professional & scientific | 2013 |
| Wrightsons Electrical Ltd | Construction | 2024 |
| Wrightway Property Holdings Ltd | Real estate | 2022 |
| WS Groundworks Ltd | Construction | 2023 |
| Wundanumba Limited | Information & communication | 2025 |
| WWM Kitchen Contracts Limited | Construction | 2007 |
| WXW Ltd | Real estate | 2021 |
| WY House Ltd | Hospitality | 2026 |
| WY Housing Ltd | Real estate | 2025 |
| Wyke Homes Limited | Construction | 2022 |
| Wyldflower Wonders Limited | Wholesale & retail | 2025 |
| Wypm Ltd | Extraterritorial | 2014 |
| X J Motors Limited | Wholesale & retail | 2011 |
| X9 Properties Limited | Real estate | 2019 |
| Xander Taylor Ltd | Professional & scientific | 2026 |
| Xauusd Trade Analysis VIP Limited | Administrative & support | 2026 |
| Xburger Brighouse Limited | Hospitality | 2024 |
| Xburger Halifax Limited | Hospitality | 2025 |
| Xcel Consultancy Ltd | Professional & scientific | 2010 |
| Xcel Interiors Limited | Construction | 2013 |
| Xcel Management Solutions Ltd | Real estate | 2024 |
| Xcel Property Ltd | Real estate | 2020 |
| Xcels Solutions Ltd | Transport & logistics | 2025 |
| XE LUX Travel Ltd | Administrative & support | 2022 |
| Xeenie Group Ltd | Professional & scientific | 2021 |
| Xeenie VIP Hospitality Ltd | Wholesale & retail | 2025 |
| Xorizon Peak Ltd | Wholesale & retail | 2025 |
| XOX Property Services Limited | Construction | 2019 |
| Xpandaspace Limited | Professional & scientific | 1996 |
| Xtreme Tanning Products Ltd | Wholesale & retail | 2024 |
| Xtreme Tech Ltd | Wholesale & retail | 2023 |
| Y & E Traders Ltd | Wholesale & retail | 2025 |
| Y&U Premium Ltd | Wholesale & retail | 2021 |
| Y.E.S. (Your Event Solutions) Limited | Administrative & support | 2002 |
| YA Nephrology Care Limited | Health & social care | 2024 |
| YA Rehman Ltd | Wholesale & retail | 2025 |
| YA Vision Limited | Real estate | 2026 |
| Yara Lounge Ltd | Hospitality | 2023 |
| YB Financial Advisory Limited | Financial services | 2020 |
| YBW Holdings Ltd | Wholesale & retail | 2022 |
| Yellow Cedars Ltd | Wholesale & retail | 2024 |
| Yellow Technical Services Ltd | Professional & scientific | 2024 |
| Yellowquote Limited | Real estate | 1985 |
| YES Community Trust | Extraterritorial | 2024 |
| YES Energy Solutions Ltd | Extraterritorial | 2009 |
| Yesterday Chocolate & Coffee Co Ltd | Hospitality | 2025 |
| YHH Ltd | Real estate | 2017 |
| Yivolution Media Ltd | Professional & scientific | 2020 |
| YNS Motors Limited | Wholesale & retail | 2026 |
| Yomith Ltd | Wholesale & retail | 2021 |
| York Minster Limited | Hospitality | 2010 |
| York Westminster Limited | Hospitality | 2010 |
| Yorks Shire Ltd | Professional & scientific | 2012 |
| Yorkshire & North East Hypnotherapy Training Ltd | Education | 2022 |
| Yorkshire Accounting Services Limited | Professional & scientific | 2010 |
| Yorkshire Assured Properties Limited | Real estate | 1997 |
| Yorkshire Auto Assist Ltd. | Wholesale & retail | 2014 |
| Yorkshire Brewers Limited | Hospitality | 2014 |
| Yorkshire Build Ltd | Construction | 2026 |
| Yorkshire Building Materials Limited | Extraterritorial | 2010 |
| Yorkshire Car and Plant Glazing Ltd | Wholesale & retail | 2015 |
| Yorkshire Car Diagnostics Ltd | Wholesale & retail | 2026 |
| Yorkshire Chiropractic Services Limited | Health & social care | 2004 |
| Yorkshire Classic Motor Cycle Club | Arts & recreation | 2004 |
| Yorkshire Cleaning Fabrics Limited | Manufacturing | 1972 |
| Yorkshire Consulting Partners Limited | Professional & scientific | 2025 |
| Yorkshire Corner Ltd | Information & communication | 2020 |
| Yorkshire Crest Limited | Construction | 2024 |
| Yorkshire Electrical Systems Limited | Construction | 2018 |
| Yorkshire Energy Services CIC | Professional & scientific | 2000 |
| Yorkshire Flower Haus Ltd | Wholesale & retail | 2025 |
| Yorkshire Founder Ltd | Construction | 2023 |
| Yorkshire Fried Chicken (Halifax) Ltd | Hospitality | 2020 |
| Yorkshire Gallery Limited | Wholesale & retail | 2018 |
| Yorkshire Home Supplies Holdings Limited | Financial services | 2025 |
| Yorkshire Investment Group Limited | Real estate | 2021 |
| Yorkshire Investment Holdings Limited | Real estate | 2024 |
| Yorkshire Pearls Ltd | Manufacturing | 2026 |
| Yorkshire Pelvic Floor Health Ltd | Health & social care | 2026 |
| Yorkshire Pennine Lime & Restoration Ltd | Construction | 2025 |
| Yorkshire PIE and PEA Company Limited | Hospitality | 2011 |