| Walton Green Limited | Wholesale & retail | 2023 |
| Waltrust SPV Ltd | Real estate | 2023 |
| Wama Services Limited | Wholesale & retail | 2011 |
| Wanda Melon Ltd | Construction | 2025 |
| Wanderlearn Ltd | Education | 2025 |
| Wantage Developments (NW) Limited | Real estate | 2020 |
| Waqar ALI Holdings Limited | Financial services | 2025 |
| Waqar Fruit & VEG Ltd | Wholesale & retail | 2023 |
| Waqas and Sons Ltd | Other services | 2022 |
| Waqas Financial Limited | Financial services | 2014 |
| WAQAS7899 Limited | Transport & logistics | 2025 |
| Waqia Ltd | Wholesale & retail | 2026 |
| Ward Plane Limited | Construction | 2007 |
| Wardag Properties Ltd | Real estate | 2017 |
| Wardley House (Bradford) Limited | Real estate | 2017 |
| Wardman Alexander Ltd | Other services | 2021 |
| Warehouse Online Discounts Limited | Wholesale & retail | 2020 |
| Waring Electrical Ltd | Construction | 2026 |
| Warisha Ltd. | Professional & scientific | 2012 |
| Warm & Cosy Fires Ltd | Wholesale & retail | 2017 |
| Warma Group Ltd | Construction | 2022 |
| Warmerhomesuk Ltd | Professional & scientific | 2025 |
| Warmglaze Ltd | Construction | 2020 |
| Warmserve Contracting Limited | Construction | 2026 |
| Warmsure Construction Ltd | Construction | 2023 |
| Warmsure Energy Ltd | Construction | 2022 |
| Warmsure Windows Ltd | Manufacturing | 2025 |
| Warr Tools and Accessories Ltd | Wholesale & retail | 2025 |
| Warrington & Gaunt Ltd | Other services | 2011 |
| Warrington Auto Diagnostics Limited | Wholesale & retail | 2024 |
| Warters & Co Ltd | Professional & scientific | 2012 |
| Washeing Trade Limited | Wholesale & retail | 2025 |
| Wasi Enterprises Limited | Wholesale & retail | 2025 |
| Wasili ALI Logistics Ltd | Transport & logistics | 2022 |
| Wasim Jewellers BFD Ltd | Wholesale & retail | 2025 |
| Wasserette Limited | Other services | 2020 |
| Waste of Space Recycling Ltd | Water & waste | 2025 |
| Watan Food Products Ltd | Manufacturing | 2025 |
| Watan Superstore (Bradford) Limited | Wholesale & retail | 2011 |
| Watan Superstore (Oldham) Limited | Wholesale & retail | 2011 |
| Watan Superstore (Rochdale) Limited | Wholesale & retail | 2011 |
| Watch Dog K 9 Security Ltd | Administrative & support | 2021 |
| Watch House (Huddersfield) Ltd | Wholesale & retail | 2026 |
| Watchdog K9 Security Services Ltd | Financial services | 2021 |
| Watches of Japan Limited | Wholesale & retail | 2022 |
| Watchguard Security Services Ltd | Administrative & support | 2023 |
| Wateen Ltd | Administrative & support | 2023 |
| Water Heating Services Limited | Administrative & support | 2003 |
| Water Mains Solutions Ltd | Construction | 2025 |
| Waterloo Advisors Limited | Wholesale & retail | 2016 |
| Waterloo Residents Management Company Limited | Real estate | 2003 |
| Watermans Leeds Limited | Real estate | 2025 |
| Watershed (Roofing) Holdings Limited | Professional & scientific | 2018 |
| Watershed Claims Services Limited | Financial services | 1997 |
| Watershed Engineering Limited | Professional & scientific | 2018 |
| Waterstone Partnership Solicitors Limited | Professional & scientific | 2020 |
| Watertight Roofline Ltd | Construction | 2024 |
| Waterwise Building Services Limited | Professional & scientific | 2020 |
| Watmough Promotions Limited | Arts & recreation | 2018 |
| Watson & Medley(Wools)Limited | | 1965 |
| Watson and Mcdonnell Limited | Education | 2013 |
| Watson Buckle Group Limited | Financial services | 2024 |
| Watson Buckle Limited | Professional & scientific | 2014 |
| Watson Buckle Wealth Management Limited | Financial services | 2008 |
| Watsons Car and Commercial Sales Ltd | Wholesale & retail | 2025 |
| Wattlid Limited | Real estate | 1946 |
| Watton Stone Ltd | Wholesale & retail | 2021 |
| Watts Surveyors Limited | Professional & scientific | 2002 |
| Waverley Hotels (Mayport) Limited | Real estate | 2023 |
| WAX & Justgo Ltd | Wholesale & retail | 2024 |
| WAY2BETTERBUSINESS Ltd | Professional & scientific | 2021 |
| Wayne Enterprises (Leicester) Limited | Wholesale & retail | 2024 |
| Wayne Holdings NO.1 Ltd | Real estate | 2022 |
| Wazzos Eservices UK Ltd | Information & communication | 2021 |
| WB (Yorkshire) Limited | Wholesale & retail | 2020 |
| WBH Consulting Limited | Professional & scientific | 2018 |
| WC Capital Holdings Ltd | Financial services | 2025 |
| WDH Services Ltd | Construction | 2025 |
| WDS Accountants Ltd | Professional & scientific | 2019 |
| WDS Audit Ltd | Professional & scientific | 2025 |
| WDS Wealth Management Ltd | Financial services | 2000 |
| WE ARE Foxglove Ltd | Arts & recreation | 2018 |
| WE ARE Vapes (Beckside) Limited | Other services | 2016 |
| WE ARE Wass Ltd | Professional & scientific | 2024 |
| WE Buy Today Ltd | Wholesale & retail | 2025 |
| WE Buy Your Property Today Ltd | Real estate | 2025 |
| WE Dazzle UK Ltd | Wholesale & retail | 2023 |
| WE Dream Ltd | Manufacturing | 2025 |
| WE FIX IT GAS Servicing Ltd | Construction | 2024 |
| WE Keep IT Klean Ltd | Other services | 2025 |
| WE Love Balloons Ltd | Wholesale & retail | 2016 |
| WE Sell ANY Vehicle Ltd | Other services | 2017 |
| WE Test Ltd | Information & communication | 2016 |
| WE VIP Transfers Ltd | Transport & logistics | 2026 |
| Wear Your Worth Ltd | Wholesale & retail | 2025 |
| Weatherguard Windows Ltd | Construction | 2016 |
| Weavers Coffee Lounge Ltd | Hospitality | 2022 |
| Web AXE Media Limited | Wholesale & retail | 2025 |
| Webargains Ltd | Wholesale & retail | 2023 |
| Webevis Technologies Ltd | Wholesale & retail | 2023 |