| Waterville Properties ( NE ) Ltd | Real estate | 2020 |
| Watson Black Search and Selection Limited | Administrative & support | 2018 |
| Watson Capital Investments (UK) Ltd | Real estate | 2021 |
| Watson Hepple Consulting Ltd. | Professional & scientific | 2017 |
| Watson Holdco Ltd | Extraterritorial | 2022 |
| Watson Marketing Limited | Professional & scientific | 2026 |
| Watson Property Group Ltd | Real estate | 2015 |
| Watson Skip Hire Limited | Extraterritorial | 2025 |
| Watsons Timber Limited | Wholesale & retail | 2003 |
| Watts on Roof Limited | Construction | 2025 |
| Wave Social Care Limited | Professional & scientific | 2022 |
| Waves Automation Ltd | Manufacturing | 2024 |
| WAX Queen’S NE Ltd | Wholesale & retail | 2021 |
| Way 4 Freight Ltd | Transport & logistics | 2025 |
| WAY2COMMUNICATE Ltd | Information & communication | 2010 |
| Wayfinder Consulting Ltd | Information & communication | 2018 |
| Waypoint Compliance Limited | Professional & scientific | 2026 |
| Ways Logistics Limited | Transport & logistics | 2019 |
| Ways to Wellness Foundation | Health & social care | 2014 |
| Ways to Wellness Limited | Health & social care | 2013 |
| Wayslink Ltd | Transport & logistics | 2026 |
| Wazobia Africa Ltd | Wholesale & retail | 2022 |
| WB & Sons Property Limited | Real estate | 2025 |
| WBB Electrical Services Ltd | Construction | 2016 |
| WBR Management Ltd | Professional & scientific | 2026 |
| WBS Accountants Ltd | Professional & scientific | 2002 |
| WBX (Europe) Limited | Manufacturing | 2006 |
| Wbxf Limited | Wholesale & retail | 2024 |
| Wcnewcastle Ltd | Hospitality | 2018 |
| WD Sports Coaching Ltd | Education | 2019 |
| WDL 1955 Ltd | Construction | 2015 |
| WE ARE ALL Disabled CIC | Information & communication | 2021 |
| WE ARE Neuro CIC | Information & communication | 2012 |
| WE ARE Never Limited | Hospitality | 2017 |
| WE ARE North Ltd | Construction | 2025 |
| WE ARE the HOI Polloi Ltd | Other services | 2019 |
| WE ARE the Works EOT Limited | Administrative & support | 2024 |
| WE ARE the Works Limited | Financial services | 2014 |
| WE Buy Bikes for More Ltd | Wholesale & retail | 2021 |
| WE Buy Cars for More Limited | Wholesale & retail | 2014 |
| WE DO Details Training Limited | Professional & scientific | 2022 |
| WE DO Digital Ltd | Professional & scientific | 2015 |
| WE Love Wood Community Interest Company | Water & waste | 2025 |
| WE Move Fitness Ltd | Arts & recreation | 2024 |
| WE Rise Wellness Ltd | Arts & recreation | 2024 |
| WE Shift.Co.Uk Limited | Transport & logistics | 2008 |
| We'Am Limited | Wholesale & retail | 2025 |
| We.A Properties Limited | Real estate | 2023 |
| We.Do.This. Ltd | Professional & scientific | 2021 |
| Wealthsphere Travel and Lifestyle Ltd | Administrative & support | 2026 |
| Wear Engineering Ltd | Other services | 2014 |
| Wearegrayfox Limited | Professional & scientific | 2019 |
| Wearside Healthcare Services Limited | Health & social care | 2024 |
| Wearside Supply Logistics Ltd | Hospitality | 2019 |
| Weavebridge Carpets Limited | Manufacturing | 2025 |
| Web 365 Ltd | Administrative & support | 2017 |
| Web Authors Limited | Information & communication | 2011 |
| Web Revenue Labs Ltd | Professional & scientific | 2026 |
| Webcontractor Holdings Ltd | Financial services | 2022 |
| Webcontractor Ltd | Construction | 2021 |
| Webhat Ltd | Information & communication | 2023 |
| Webnore Limited | Information & communication | 2017 |
| Webster & Carr Ltd | Other services | 2020 |
| Webster Bros. (Newcastle) Limited | Real estate | 1940 |
| Webster Lettings Ltd | Real estate | 2024 |
| Wecorp Industries Ltd | Manufacturing | 2018 |
| Wedeliver Ltd | Transport & logistics | 2024 |
| Wedico Ltd | Real estate | 2023 |
| WEEK2WEEK Serviced Apartments Limited | Real estate | 2010 |
| Weekender Events Ltd | Administrative & support | 2022 |
| Wegrow Studio Ltd | Professional & scientific | 2023 |
| Weight Loss Forever Ltd | Health & social care | 2019 |
| WEIGHTLOSSUK1 Ltd | Other services | 2025 |
| Weightman Consultants Ltd | Administrative & support | 2024 |
| Weights and Measures Building RTM Company Ltd | Households | 2025 |
| Weirgate Properties Limited | Real estate | 2019 |
| WEJ Consulting Ltd | Professional & scientific | 2016 |
| Welbeck Road Mini Market Ltd | Wholesale & retail | 2025 |
| Welbilt (Halesowen) Limited | Manufacturing | 1976 |
| Welbilt Foodservice Holding Limited | Financial services | 2015 |
| Welbilt FSG UK Limited | Financial services | 2015 |
| Welbilt UK Limited | Manufacturing | 1991 |
| Welburn Investments Limited | Real estate | 2024 |
| Welch Residential Limited | Real estate | 2016 |
| Welcome Health Pharmacies Limited | Wholesale & retail | 2017 |
| Welcome to the Good Life Ltd | Administrative & support | 2025 |
| Welcome to the People Ltd | Professional & scientific | 2024 |
| Well Group (NE) Ltd | Professional & scientific | 2023 |
| Well MOM Consultancy Limited | Professional & scientific | 2023 |
| Well Northern Limited | Real estate | 2025 |
| Well Strand (Management) Limited | Real estate | 2002 |
| Wellapse Limited | | 1982 |
| Wellbark Limited Partnership | | 2006 |
| Wellesley Residents Trust Limited | Real estate | 2014 |
| Wellfield Rise Residents Management Company Limited | Households | 2021 |
| Wellington Taylor Limited | Construction | 2026 |
| Wellmake Limited | Health & social care | 2002 |
| Wellness Distribution Ltd | Wholesale & retail | 2019 |
| Wellness House Group Ltd | Health & social care | 2026 |
| Wellnetix Ltd | Information & communication | 2025 |