| Triple Word Score Ltd. | Information & communication | 2013 |
| Trippn Co Ltd | Professional & scientific | 2025 |
| Trojan Trades Limited | Administrative & support | 2022 |
| Truck Monkey Garage Ltd | Wholesale & retail | 2018 |
| True Clarity Insight Limited | Professional & scientific | 2022 |
| Truled Ltd | Wholesale & retail | 2021 |
| Trusted Fire Protection Ltd | Administrative & support | 2019 |
| TSS Homes Ltd | Construction | 2017 |
| Tubeology Limited | Manufacturing | 2009 |
| Turkish Barber (Selby) Ltd | Other services | 2024 |
| Turners (Holdings) Limited | Other services | 2022 |
| Turners Accident Repair Limited | Other services | 1993 |
| Turners Topco Limited | Financial services | 2025 |
| Turton Electrical Ltd | Construction | 2024 |
| Twins Sports Clothing Ltd | Wholesale & retail | 2022 |
| UK DEV Limited | Information & communication | 2005 |
| UK Farming, Forestry and Aquaculture Ltd | Agriculture & fishing | 2015 |
| Underwater Construction Limited | Professional & scientific | 2015 |
| Unfiltered Rebuild Limited | Arts & recreation | 2025 |
| Union Tyre Retail Ltd | Wholesale & retail | 2025 |
| Union Tyres Limited | Wholesale & retail | 2003 |
| Unique Designs & Projects Ltd | Construction | 2023 |
| Unique Wooden Products Ltd | Manufacturing | 2019 |
| United Plastering Ltd | Construction | 2026 |
| Unpausable Limited | Wholesale & retail | 2022 |
| UOT Film (UK) Limited | Information & communication | 2022 |
| Upton Group Holdings Limited | Financial services | 2025 |
| Upton Group Limited | Wholesale & retail | 2002 |
| Upton Landscapes Ltd | Administrative & support | 2025 |
| UT Pharma Limited | Wholesale & retail | 2025 |
| Vale of York Farriery Limited | Professional & scientific | 2016 |
| Validus Electrical Ltd | Construction | 2021 |
| Valorise Limited | Manufacturing | 2021 |
| Value Added Bookkeeping Services Limited | Administrative & support | 2012 |
| Van MAN York Ltd | Transport & logistics | 2020 |
| Van-Helson Ltd. | Wholesale & retail | 2023 |
| Vantis Construction Consultants Limited | Professional & scientific | 2010 |
| Vectris Ltd | Wholesale & retail | 2013 |
| Velaro Fabrics Ltd | Wholesale & retail | 2024 |
| Venn Compliance Services Limited | Professional & scientific | 2018 |
| Ventilation Solutions Ltd | Other services | 2018 |
| VIDOR21 Ltd | Real estate | 2022 |
| Viewbest Limited | Financial services | 2024 |
| Viking Group (Yorkshire) Ltd | Other services | 2015 |
| Village Inn Properties Limited | Real estate | 2025 |
| Vine Code Limited | Information & communication | 2015 |
| Vine Recruitment Ltd | Hospitality | 2023 |
| Violet Cafe Limited | Hospitality | 2025 |
| Viridian Enterprises Ltd | Administrative & support | 2024 |
| Vivienne Kondi Ltd | Wholesale & retail | 2023 |
| Vocit Ltd | Information & communication | 2007 |
| VPW Holdings Limited | Professional & scientific | 2025 |
| W & a Construction Limited | Construction | 2022 |
| W.E Holdings Ltd | Real estate | 2020 |
| WA Quality Training & Consultancy Services Limited | Professional & scientific | 2018 |
| Wadkin Arms (Selby) Limited | Hospitality | 2022 |
| Waiting for Anya Limited | Information & communication | 2016 |
| Waldaira Project Development Ltd | Real estate | 2016 |
| Walker and Dodds Ltd | Transport & logistics | 2023 |
| Walker’S Welding & Handyman Services Limited | Manufacturing | 2025 |
| Walmgate Property Developers Limited | Real estate | 2000 |
| Walshtec Ltd | Manufacturing | 2024 |
| Wanigema Holdings UK Limited | Professional & scientific | 2016 |
| Ward Dumptruck Hire Ltd | Construction | 2007 |
| Ward Logistic Services Limited | Transport & logistics | 2024 |
| WARE247 Ltd | Information & communication | 2004 |
| Wash Empress Limited | Other services | 2003 |
| Water Management Services Ltd | Professional & scientific | 2014 |
| Watson Shipley Developments Ltd | Construction | 2025 |
| WE ARE Brandability Ltd | Professional & scientific | 2020 |
| Web Whizzards Ltd | Information & communication | 2024 |
| Webster's Butchers Ltd | Wholesale & retail | 2025 |
| Websters (Burn) Limited | Manufacturing | 2008 |
| Websters Contracting Ltd | Construction | 2025 |
| Websters Properties (Yorkshire) Ltd | Real estate | 2025 |
| Weeve Data Limited | Information & communication | 2026 |
| Wellec Electrical Contracting Ltd | Construction | 2021 |
| Wells PL Ltd | Construction | 2019 |
| West Country Goldsmiths Limited | Manufacturing | 2016 |
| West View Garage Ltd | Wholesale & retail | 2015 |
| Westtown Health Limited | Wholesale & retail | 2025 |
| Westwind Ltd | Real estate | 2021 |
| What Worktop Limited | Wholesale & retail | 2026 |
| White Star Property Ltd | Extraterritorial | 2017 |
| Whitemoor Property Limited | Real estate | 2020 |
| Whitethorn Construction Limited | Construction | 2021 |
| Widdy's Properties Ltd | Real estate | 2010 |
| Wild Greens Farm Ltd | Agriculture & fishing | 2018 |
| Wildman Digital Ltd | Professional & scientific | 2021 |
| Williams & Co Leisure Limited | Agriculture & fishing | 2026 |
| Willow Drive Street Management Company Limited | Households | 2021 |
| Willow Nurseries (N/E) Ltd | Wholesale & retail | 2005 |
| Willows Selby Ltd | Administrative & support | 2023 |
| Wilson Engineering Limited | Construction | 2006 |
| Windser Holdings Ltd | Construction | 2024 |
| Windser Road Services Limited | Construction | 2008 |
| Wintersmith Consulting Ltd | Professional & scientific | 2018 |
| Wirey Mullet Limited | Hospitality | 2024 |
| Wisebusiness Ltd | Information & communication | 2005 |
| Wistow Locum Limited | Health & social care | 2024 |