| Waites Recruitment Consultancy Ltd | Administrative & support | 2023 |
| Waldow Ltd | Real estate | 2015 |
| Walker & Associates Limited | Professional & scientific | 2003 |
| Walker Crips Financial Planning Limited | Financial services | 1999 |
| Walker Crips Ventures Limited | Financial services | 2006 |
| Walker Developments (York) Limited | Construction | 2014 |
| Walker Grain Storage Limited | Real estate | 2014 |
| Walker Jones Surveyors Limited | Professional & scientific | 2003 |
| Walker Medical & Scientific Ltd | Manufacturing | 2016 |
| Walkers Snack Shack Ltd | Hospitality | 2023 |
| WALKS4PAWS Ltd | Other services | 2024 |
| Wall Fandango Ltd | Wholesale & retail | 2024 |
| Wall of Sound Audio Visual Limited | Wholesale & retail | 2007 |
| Wallis Estates Ltd | Real estate | 2018 |
| Wallis Joinery & Building Limited | Construction | 2003 |
| Walmersley Golf Club (Propco) Limited | Arts & recreation | 1921 |
| Walnut Securities Limited | Financial services | 2007 |
| Walter Property Ltd | Real estate | 2017 |
| Walton & Company Limited | Wholesale & retail | 1919 |
| Walton Group York Ltd | Financial services | 2020 |
| Walton's Automotive Ltd | Wholesale & retail | 2026 |
| Wamjam Limited | Professional & scientific | 2002 |
| Wamu Technology Limited | Information & communication | 2025 |
| WAN Holdco Limited | Real estate | 2023 |
| Wandales Holdings Ltd | Real estate | 2022 |
| Waqif Arabian Kitchen Limited | Hospitality | 2025 |
| Warboys Wonderful Web Limited | Information & communication | 2010 |
| Warburton Logistics Ltd | Transport & logistics | 2017 |
| Warburton Property Management Ltd | Real estate | 2024 |
| Ward Construction (York) Limited | Construction | 2020 |
| Ward Homes (York) Limited | Construction | 2015 |
| Ward Hygiene Services Limited | Wholesale & retail | 2007 |
| Wardaddy Miniatures Ltd | Wholesale & retail | 2023 |
| Wards of York Limited | Wholesale & retail | 2015 |
| Ware & KAY Financial Services Limited | Financial services | 2012 |
| Ware & KAY Services Ltd | Administrative & support | 2013 |
| Ware & KAY Solicitors Ltd | Professional & scientific | 2014 |
| Ware Home Developments Ltd | Construction | 2026 |
| Warman Homes Ltd | Construction | 2013 |
| Warmfield Consultants Limited | Construction | 2018 |
| Warmfield Group LLP | | 2018 |
| Warmfield Projects Limited | Construction | 2019 |
| Warmshield Home Improvements Ltd | Construction | 2021 |
| Warn Investments Limited | Real estate | 2018 |
| Warndell Investments Limited | Wholesale & retail | 1976 |
| Warner IP Limited | Professional & scientific | 2026 |
| Warners Letting Agency Limited | Real estate | 1983 |
| WARP9 AI Ltd | Information & communication | 2025 |
| Warren Farm Property Management Company Limited | Other services | 2004 |
| Warren Grace Management Co. Ltd. | Real estate | 1995 |
| Warren Pastures Management Company Limited | Households | 2025 |
| Warrendale Eggs Limited | Real estate | 2022 |
| Warrendale Farms Limited | Real estate | 2022 |
| Warrendale Feedstock Limited | Real estate | 2022 |
| Warrendale Group Limited | Agriculture & fishing | 2002 |
| Warrendale Poultry Limited | Other services | 2019 |
| Warrendale Properties Limited | Other services | 2019 |
| Warrendale Pullets 2023 Limited | Agriculture & fishing | 2004 |
| Warrendale Wagyu Limited | Manufacturing | 2017 |
| Warry Ltd | Agriculture & fishing | 2022 |
| Wason (UK) Limited | Wholesale & retail | 2019 |
| Wass Farm Ltd | Manufacturing | 2020 |
| Watch Harbor Limited | Wholesale & retail | 2025 |
| Watchman Films Limited | Information & communication | 2015 |
| Water Core Ltd | Professional & scientific | 2020 |
| Water Technology Engineering Ltd | Water & waste | 2010 |
| WATER7EVEN Ltd | Extraterritorial | 2025 |
| Waterdale Park Management Company Limited | Households | 1992 |
| Waterfield Associates Limited | Construction | 1997 |
| Waterfield Place (Market Harborough) Residential Management Company Limited | Households | 2014 |
| Waterfront 1 (Selby) RTM Company Limited | Households | 2013 |
| Waterguard Facilities Management Limited | Construction | 2018 |
| Waterhouse Events Ltd | Other services | 2015 |
| Waterloo Holdings Limited | Professional & scientific | 1972 |
| Watermark Compliance Ltd | Professional & scientific | 2014 |
| Watermark Plumbing Supplies (Yorkshire) Limited | Wholesale & retail | 2004 |
| Waters & Bainbridge Ltd | Hospitality | 2017 |
| Waters Edge (Buckshaw) Management Company Limited | Households | 2015 |
| Waterside Living Limited | Real estate | 2018 |
| Waterstone Plumbing & Heating Contractors Ltd | Construction | 2023 |
| Watertech Solutions Ltd | Construction | 2013 |
| Wath House Management Company Limited | Households | 2014 |
| Wath Quarries Limited | Mining & quarrying | 1954 |
| Wathcourt Nursery Limited | Health & social care | 2012 |
| Watling Place (Newington) Residents Management Company Ltd | Households | 2018 |
| Watson & Hunter Specialised Vehicles Limited | Manufacturing | 2018 |
| Watson Court Management Company Limited | Households | 1986 |
| Watson Properties York Ltd | Real estate | 2020 |
| Watsons Hydraulics Ltd | Manufacturing | 2012 |
| Watsons of Brandsby Limited | Agriculture & fishing | 2003 |
| Wattclan Ltd | Professional & scientific | 2021 |
| Watt’S UP? - Autos Ltd | Wholesale & retail | 2024 |
| Waudby Enterprises Ltd | Professional & scientific | 2023 |
| Waudby Estates Limited | Real estate | 2023 |
| Waudby Freeholds Limited | Real estate | 2026 |
| Waudby Holdings (UK) Ltd | Financial services | 2023 |
| Waugh Petroleum Limited | Wholesale & retail | 2013 |
| Wave Investment (Yorkshire) Ltd | Real estate | 2020 |
| Wavebridge Engineering Ltd | Professional & scientific | 2025 |
| Waves Logistics Limited | Transport & logistics | 2024 |