| Waverley Enterprise (NW) Ltd | Hospitality | 2017 |
| WBK Property Investments Ltd | Real estate | 2025 |
| WBK Ritchie’S Ltd | Real estate | 2018 |
| Wbkb Cumbria Ltd | Arts & recreation | 2025 |
| Weldserv Site Services Ltd | Manufacturing | 2013 |
| Welton Estates Limited | Real estate | 2021 |
| West Coast Cars Limited | Wholesale & retail | 2004 |
| West Coast Competitions Limited | Other services | 2022 |
| West Coast Fish Limited | Agriculture & fishing | 2012 |
| West Coast Groundworks Limited | Construction | 2006 |
| West Coast Holdings (Cumbria) Limited | Financial services | 2022 |
| West Coast Properties (Cumbria) Limited | Real estate | 2024 |
| West Coast Rental and Trading Limited | Wholesale & retail | 2026 |
| West Coast Storage Limited | Transport & logistics | 2020 |
| West Coast Surveys Limited | Construction | 2003 |
| West Coast Thermal Limited | Construction | 2002 |
| West Cumbria Personnel Services Ltd | Administrative & support | 2002 |
| West Cumbria Sheet Metal Works Ltd | Manufacturing | 2000 |
| West Ghyll Property Investments Limited | Real estate | 2010 |
| West Lakes Demolition Limited | Construction | 2020 |
| West Lakes Photography Ltd | Professional & scientific | 2023 |
| West Lakes Squirrel Initiative Ltd | Agriculture & fishing | 2013 |
| West Lakes Storage Limited | Transport & logistics | 2020 |
| Western Leisure Limited | Arts & recreation | 2003 |
| Westmorland Gearing Limited | Financial services | 2022 |
| WGR Developments Limited | Construction | 2025 |
| Whitbeck Electrical Contractors Limited | Construction | 2009 |
| Wiggle Butt Ltd | Extraterritorial | 2022 |
| Wild Duck Inn (Branthwaite) Limited | Hospitality | 2026 |
| Wilkinson James Partnership Limited | Professional & scientific | 2003 |
| Will Ritchie Group Ltd | Real estate | 2021 |
| Wind Inspections Limited | Professional & scientific | 2013 |
| Wiring Cumbria Ltd | Energy | 2024 |
| WLP Properties Limited | Real estate | 2024 |
| WND Group LP | | 2016 |
| Wollenscroft Property Management Company (2000) Limited | Households | 2000 |
| Women WHO Cumbria CIC | Health & social care | 2025 |
| Woodend Country Childcare Ltd | Health & social care | 2016 |
| Woodend Roofing Limited | Construction | 2022 |
| Woodward Safety Health & Environment Limited | Other services | 2000 |
| Workiington Mini Store Ltd | Wholesale & retail | 2025 |
| Workington Golf Club Limited(The) | Arts & recreation | 1965 |
| Workington Juniors Football Club Limited | Arts & recreation | 2022 |
| Workington Transport Heritage Trust | Transport & logistics | 2003 |
| Workman Mapping Services Limited | Professional & scientific | 2008 |
| Wybrow Management Company Limited | Real estate | 2007 |
| Wyndham Close Estate Limited | Households | 2026 |
| Wyndham Estate Limited | Households | 2025 |
| Xtreme Lean Limited | Other services | 2018 |
| Yaman Sahan Ltd | Hospitality | 2025 |
| YAS Motors Cumbria Ltd | Wholesale & retail | 2024 |
| Yearl Control Systems Limited | Administrative & support | 2006 |
| Yearl Rise Management Company Limited | Households | 2004 |
| YEW Tree Consulting Ltd | Administrative & support | 2024 |
| Youngs Property Management Ltd | Real estate | 2026 |
| Ypws Limited | Professional & scientific | 2012 |
| YS Developments Cumbria Ltd | Real estate | 2023 |
| Zanacchi Developments (Holdings) Ltd | Financial services | 2023 |
| Zencosport Ltd | Wholesale & retail | 2025 |
| Zest (Whitehaven) Limited | Hospitality | 2002 |
| Zupacarz Ltd | Transport & logistics | 2025 |