| Walnick Ltd | Professional & scientific | 2023 |
| Ware Network Services Limited | Professional & scientific | 2023 |
| Washdown Supplies Limited | Wholesale & retail | 2002 |
| Waters & Co Construction Ltd | Extraterritorial | 2020 |
| Waterside Wake and Surf Limited | Arts & recreation | 2025 |
| Watling Street Filling Station Limited | Wholesale & retail | 1984 |
| Watson's Auto Care Limited | Wholesale & retail | 2024 |
| Wayfairer Travel Ltd. | Administrative & support | 2012 |
| WDS (Lancashire) Limited | Construction | 2012 |
| Weareten Limited | Arts & recreation | 2025 |
| Weather Duck Ltd | Information & communication | 2023 |
| Webscho Forestry Limited | Agriculture & fishing | 2014 |
| Webster Forestry Limited | Agriculture & fishing | 1987 |
| Webster Minerals Limited | Administrative & support | 1996 |
| Wedgewood Management Limited | Professional & scientific | 2018 |
| Welly and Tails Ltd | Other services | 2022 |
| Welplan Limited | Administrative & support | 1993 |
| Wentworth Farming Ltd | Agriculture & fishing | 2021 |
| Wessgate Financial Services Limited | Financial services | 2015 |
| West March Systems Limited | Information & communication | 2007 |
| West View Biomass Limited | Energy | 2014 |
| WEST5 Properties Limited | Manufacturing | 2008 |
| Western Construction Cumbria Limited | Construction | 2011 |
| Westmorland Chapel Farm Limited | Agriculture & fishing | 2018 |
| Westmorland Limited | Wholesale & retail | 2005 |
| Westmorland Motorway Services Limited | Extraterritorial | 1971 |
| Westmorland Roofing Ltd | Construction | 2025 |
| Westwood Barbering Limited | Other services | 2026 |
| WET & Wild in the Lakes Limited | Arts & recreation | 2024 |
| Wetherigg Estates Limited | Households | 2021 |
| Wetherigg Homes Limited | Construction | 2018 |
| Whelpdale House Management Limited | Real estate | 1989 |
| White OX Financial Services Limited | Financial services | 2007 |
| White OX Penrith Ltd | Agriculture & fishing | 2024 |
| Whitehurst & Pearson Limited | Real estate | 2017 |
| Whitemore & Thwaytes Limited | Wholesale & retail | 2017 |
| Whiteside Cleaning Ltd | Administrative & support | 2025 |
| Wild Acres Cumbria Ltd | Wholesale & retail | 2026 |
| Wilde Training & Consultancy Ltd | Professional & scientific | 2018 |
| Wildflower DEN Ltd | Health & social care | 2025 |
| Wildroof Landscapes Limited | Financial services | 2022 |
| Willan & Co Construction Limited | Construction | 2025 |
| Willan & Lund Holdings Limited | Real estate | 2019 |
| Willan Living Ltd | Professional & scientific | 2019 |
| Willan Trading Limited | Construction | 2010 |
| William Bashall Limited | Administrative & support | 2011 |
| Willowbrook Property Management Ltd | Real estate | 2026 |
| Windlelab Limited | Other services | 2018 |
| Winning H M (Training) Limited | Extraterritorial | 1995 |
| Winter Tarn Dairies Limited | Manufacturing | 2023 |
| Wired Guides Ltd | Information & communication | 2020 |
| Wirral Tree Services Limited | Agriculture & fishing | 2014 |
| Wirral Tree Surgeons Limited | Agriculture & fishing | 2014 |
| Wizard Exhausts Ltd | Wholesale & retail | 2014 |
| Woggle Goggle Limited | Arts & recreation | 2020 |
| Wolfe Animal Services Limited | Financial services | 2023 |
| Wood Road Haulage Limited | Transport & logistics | 1999 |
| Wood Waste Recycling Limited | Water & waste | 1999 |
| Worldwide Travel Connections Ltd | Administrative & support | 2002 |
| Xtreme Mowing Limited | Administrative & support | 2008 |
| Xtreme Signs Ltd | Manufacturing | 2015 |
| YAM Architects Limited | Professional & scientific | 2021 |
| YAN Farm Health Limited | Professional & scientific | 2021 |
| YAN TAN Business Services Limited | Professional & scientific | 2016 |
| Yangue Diagnostic Imaging Solutions Limited | Health & social care | 2024 |
| Yantyan Ltd | Professional & scientific | 2026 |
| Yorkshire Dales Catering Company Limited | Hospitality | 2018 |
| Yorkshire Imos Ltd | Health & social care | 2024 |
| Your Spinal Health Carlisle Ltd | Health & social care | 2021 |
| Zabka Mini Market Penrith Ltd | Wholesale & retail | 2016 |
| Zedmedconsulting Limited | Other services | 2021 |
| ZMW Acquisitions Ltd. | Real estate | 2022 |