| Ward Brothers (Holdings) Limited | Financial services | 2020 |
| Warde-Norbury (Trustees) Limited | Professional & scientific | 2016 |
| Warden Call Spare Parts Limited | Wholesale & retail | 2016 |
| Wardle Developments Ltd Ltd | Construction | 2020 |
| Wargaming International Limited | Wholesale & retail | 2022 |
| Warm Roof Design UK Limited | Construction | 2025 |
| Warm Space Homes UK Limited | Construction | 2025 |
| Warm Up(Uk) Homes Limited | Construction | 2025 |
| Warmafloor (GB) Limited | Construction | 1995 |
| Warmly Food Limited | Hospitality | 2023 |
| Warmsworth Community Partnership | Other services | 2012 |
| Warmsworth Community Pre-School CIC | Education | 2008 |
| Warmsworth Engineering Services Limited | Professional & scientific | 2018 |
| Warmsworth Stone Limited | Manufacturing | 1995 |
| Warners Fishmerchants Limited | Wholesale & retail | 1981 |
| Warren Connor TM Ltd | Public administration | 2022 |
| Warren Dowse Events Ltd | Arts & recreation | 2025 |
| Warren Property Solutions Limited | Real estate | 2024 |
| Warrenders Automotives Limited | Wholesale & retail | 2016 |
| Warrener Grady Ltd | Financial services | 2019 |
| Warrens Accountants Limited | Professional & scientific | 2024 |
| WARRIOR76 Ltd | Education | 2025 |
| Warszawa Mini Market Ltd | Wholesale & retail | 2022 |
| Wasakaa Properties Limited | Real estate | 2008 |
| Waseems Property Limited | Real estate | 2024 |
| Wasilewski Services Limited | Administrative & support | 2025 |
| Waste Mover Brokerage Limited | Water & waste | 2025 |
| Waste Online Group Ltd | Extraterritorial | 2020 |
| Waste Online Ltd | Extraterritorial | 2020 |
| Waste Recycling Group (Central) Limited | Water & waste | 2000 |
| Waste Recycling Group (UK) Limited | Water & waste | 1990 |
| Waste Recycling Group (Yorkshire) Limited | Water & waste | 1989 |
| Waste to Energy Group Holdings Limited | Financial services | 2019 |
| Waste to Energy Group Limited | Professional & scientific | 2016 |
| Wastelink Ltd | Water & waste | 2025 |
| Wastenotts (Reclamation) Limited | Water & waste | 1991 |
| Wastenotts O&M Services Limited | Water & waste | 1991 |
| Wastewise (UK) Limited | Water & waste | 2001 |
| Wastewise Holdings Ltd | Water & waste | 2017 |
| Wastewise Limited | Water & waste | 2009 |
| Watchman Packaging (Flexibles) Limited | Manufacturing | 2002 |
| Water Services Corporation Limited | Water & waste | 2014 |
| Waterhouse and Five Bears Limited | Other services | 2018 |
| Waterside Architectural Design Limited | Professional & scientific | 2014 |
| Waterside Bathrooms and Kitchens Limited | Wholesale & retail | 2022 |
| Waterside Gardens RTM Company Limited | Households | 2016 |
| Waterside Properties Ltd | Real estate | 2023 |
| Wath Physiotherapy Limited | Health & social care | 2010 |
| Watson Architecture Ltd | Professional & scientific | 2023 |
| Watson Auto Electrical Services Ltd | Wholesale & retail | 2026 |
| Watson Aviation Services Limited | Manufacturing | 2023 |
| Watson Family Investment Company | Financial services | 2014 |
| Watson Family Properties Limited | Real estate | 2014 |
| Watson Homes & Developments Ltd | Construction | 2026 |
| Watsons Estate Company Limited | Construction | 1955 |
| Wattam I Revising Ltd | Information & communication | 2025 |
| Wave Contracting Ltd | Other services | 2020 |
| Wave the Magic Wand Ltd | Administrative & support | 2024 |
| Wave Watchers Limited | Professional & scientific | 2024 |
| Wavecoast Limited | Extraterritorial | 2012 |
| Waveform Properties Ltd | Households | 2025 |
| Wavin Limited | Manufacturing | 1946 |
| Wavin UK (Holdings) Limited | Professional & scientific | 2005 |
| Waxpine Global Resources Limited | Wholesale & retail | 2024 |
| Wayland Road Limited | Real estate | 2018 |
| Wayne Brown Property Ltd | Real estate | 2023 |
| Wayne Buckle T/As Darwen Timber Ltd | Construction | 2017 |
| Wayne Sinclair Ltd | Information & communication | 2014 |
| Wayside Automotive Services Ltd | Manufacturing | 2010 |
| Wayvero Limited | Information & communication | 2026 |
| WB Advanced Care Ltd | Health & social care | 2023 |
| WB Forwarders Ltd | Transport & logistics | 2025 |
| WB Group Holdings Limited | Real estate | 2023 |
| WBS Barber Ltd | Other services | 2026 |
| WCE Property Investments Ltd | Real estate | 2023 |
| WD Services & Repairs Ltd | Wholesale & retail | 2017 |
| WDA Transport Limited | Transport & logistics | 2024 |
| Wdec Ltd | Professional & scientific | 2024 |
| WE ARE Creative Push Ltd. | Manufacturing | 2022 |
| WE ARE Motion Ltd | Information & communication | 2025 |
| WE ARE Pandr Ltd | Manufacturing | 2021 |
| WE ARE Social Housing Limited | Real estate | 2012 |
| WE CAN Grow Ltd | Agriculture & fishing | 2013 |
| WE FIX UK NOW Community Support & Solutions CIC | Education | 2026 |
| WE FIX UK NOW Ltd | Administrative & support | 2025 |
| WE Know YOU Ltd | Professional & scientific | 2014 |
| WE Raise the Game Ltd | Professional & scientific | 2019 |
| WE Rank Trades Limited | Professional & scientific | 2026 |
| WE Respond 24/7 Ltd | Administrative & support | 2024 |
| WE Sustain Ltd | Administrative & support | 2022 |
| We'Re JAM Inn Ltd | Real estate | 2020 |
| Wealthy Estates Ltd | Construction | 2024 |
| Weareplayas Ltd. | Wholesale & retail | 2025 |
| Weaver Family Investment Company | Construction | 2019 |
| Webb Trading Limited | Manufacturing | 2002 |
| Webb's Project Services Limited | Professional & scientific | 2024 |
| WEBBIT247 Limited | Information & communication | 2022 |
| Websellmasters Limited | Information & communication | 2005 |
| Webshop Guru Ltd | Other services | 2018 |
| Wecl Limited | Construction | 2024 |