| THH Properties Limited | Real estate | 2022 |
| Third EYE Brands Ltd | Wholesale & retail | 2025 |
| Thompson Assets Ltd | Real estate | 2009 |
| Thornton Home Improvements Limited | Manufacturing | 2012 |
| Til-Ex Limited | Construction | 1984 |
| Times Bedding Ltd | Manufacturing | 2023 |
| Times Beds Limited | Wholesale & retail | 2022 |
| Tiptop Estates Ltd | Real estate | 2024 |
| Tiptop Facilities Ltd | Wholesale & retail | 2014 |
| TJS Packaging Solutions Ltd | Professional & scientific | 2012 |
| TMY Optimal Ltd | Construction | 2024 |
| Tompion OIL Company Limited | Wholesale & retail | 1945 |
| Tongue TIE Midwives Yorkshire Limited | Health & social care | 2022 |
| Top Chicken Ltd | Hospitality | 2021 |
| Toprank-Sport Limited | Wholesale & retail | 2011 |
| Touch of Northern Ltd | Real estate | 2024 |
| Towells Aggregates Ltd | Transport & logistics | 2021 |
| Towngate (UK) Properties Limited | Real estate | 2008 |
| Toy Junction Limited | Wholesale & retail | 2023 |
| Travel Plan Services Limited | Professional & scientific | 2016 |
| Travelwise Business Travel Management Limited | Extraterritorial | 1988 |
| Travelwise Leisure Limited | Extraterritorial | 1936 |
| Trevelyan Property Letting Limited | Real estate | 2016 |
| TRI Swim School Ltd | Arts & recreation | 2024 |
| Trichology Specialist Limited | Other services | 2023 |
| Trident Plastering and Drylining Ltd | Construction | 2018 |
| Trinity Flooring & Interiors Limited | Construction | 2018 |
| Trinity Metals Ltd | Water & waste | 2013 |
| Triple K Construction Limited | Construction | 2019 |
| Truerack Limited | Manufacturing | 2026 |
| Truphe Limited | Wholesale & retail | 2025 |
| Trust Print and Media Solutions Limited | Manufacturing | 2011 |
| Trusted Funding Limited | Financial services | 2023 |
| TSP Holdings Yorkshire Limited | Financial services | 2019 |
| TSR Repair Limited | Information & communication | 2020 |
| Tucker and Tunstalls Limited | Construction | 1914 |
| Twenty Five Properties Ltd | Real estate | 2021 |
| Twitch Hill Flats Management Limited | Households | 1984 |
| TWV Electrical Services Limited | Construction | 2017 |
| Uber Rooms Limited | Other services | 2014 |
| UK CBD Pharm Ltd | Wholesale & retail | 2018 |
| UK Cylinder Company Ltd | Wholesale & retail | 2020 |
| UK Cylinders Limited | Wholesale & retail | 2020 |
| UK Honey Ltd | Agriculture & fishing | 2023 |
| Ukdreamvapes Ltd | Wholesale & retail | 2023 |
| Ultimate Concept Flooring Ltd | Construction | 2019 |
| Ultimate Developments 2020 Ltd | Hospitality | 2020 |
| United Security Limited | Administrative & support | 2017 |
| Upvc Recycling Ltd | Water & waste | 2009 |
| Urban Biotics Ltd | Professional & scientific | 2020 |
| Vancore Systems Ltd | Manufacturing | 2025 |
| Vapour Worx (Ossett) Limited | Wholesale & retail | 2018 |
| Varnaby Limited | Information & communication | 2016 |
| VAS Solutions Ltd | Information & communication | 2022 |
| Vectacom Limited | Construction | 2004 |
| Vehiclaim Solutions Ltd | Transport & logistics | 2023 |
| Ventilation Cleaning Services Limited | Administrative & support | 2006 |
| Victoria Building Company Limited | Construction | 2003 |
| Viking Strength Ltd | Arts & recreation | 2019 |
| Vintage Car Sales Ltd | Wholesale & retail | 2020 |
| VIP Auto Parts Ltd | Wholesale & retail | 2024 |
| Vision Electrical Yorkshire Limited | Construction | 2025 |
| Vision Homes & Property Investments Ltd | Real estate | 2024 |
| VJ Solutions Ltd | Professional & scientific | 2020 |
| Voluntr Forge Ltd | Professional & scientific | 2025 |
| W3 Services Ltd | Manufacturing | 2023 |
| Wabsys Limited | Information & communication | 2006 |
| Wakefield Bathrooms Limited | Wholesale & retail | 2007 |
| Wakefield Bodyworks Ltd | Wholesale & retail | 2026 |
| Wakefield M L Ltd | Real estate | 2018 |
| Wakefield Nightclub Group Ltd | Wholesale & retail | 2025 |
| Wakefield Plumbing Co Limited | Construction | 2020 |
| Wakefield Upholsterers Limited | Manufacturing | 2022 |
| Wakey Wakey CC CIC | Wholesale & retail | 2025 |
| Walker Construction (Yorkshire) Ltd | Construction | 2024 |
| Walker's Lettings Limited | Real estate | 2025 |
| Walker's Windows Limited | Construction | 2007 |
| Walkers Holdings Limited | Financial services | 2017 |
| Wardman Properties Ltd | Real estate | 2023 |
| Warmsworth Healthcare Ltd | Other services | 2024 |
| Water Lane Medical Limited | Health & social care | 2026 |
| Webber Books Limited | Information & communication | 2018 |
| Wedding Mates Limited | Wholesale & retail | 2016 |
| Week Farm Stables Limited | Real estate | 2005 |
| Wellfield Advisory Limited | Professional & scientific | 2026 |
| West Riding Plumbing and Heating Solutions Ltd | Construction | 2016 |
| West Yorkshire Geomatics Ltd | Professional & scientific | 2025 |
| West Yorkshire Leisure Vehicle Storage Ltd | Transport & logistics | 2023 |
| West Yorkshire Theatre Dance Centre Ltd | Arts & recreation | 2015 |
| Wests Electrical Limited | Construction | 2022 |
| What's Your Story Marketing Ltd | Professional & scientific | 2024 |
| Whimzle Limited | Manufacturing | 2026 |
| White Rose Decor Ltd | Construction | 2020 |
| White Rose Packaging Limited | Manufacturing | 2002 |
| White Space Brands Ltd | Professional & scientific | 2024 |
| Whiteman Ltd | Real estate | 2020 |
| Wholesale Glass Ltd | Manufacturing | 2006 |
| Whoop Competitions Ltd | Wholesale & retail | 2026 |
| Wideview Limited | Extraterritorial | 1992 |
| Wild at Heart Yorkshire Limited | Hospitality | 2020 |