| Vidolov & SON Ltd | Manufacturing | 2025 |
| Visual Testing Services Limited | Professional & scientific | 1999 |
| W. Harradine & Sons Limited | Agriculture & fishing | 1955 |
| W.T. Developments Limited | Real estate | 1987 |
| Walkway Limited | Real estate | 1986 |
| Walton Retail Park Limited | Construction | 2004 |
| Waterland Media Limited | Information & communication | 2009 |
| Watertight (ST Ives) Limited | Professional & scientific | 2004 |
| Watertight Plumbing & Heating Supplies Limited | Wholesale & retail | 2002 |
| Wayne Cowling Ltd | Construction | 2008 |
| Wayne Drewery Limited | Construction | 2002 |
| Wayside Kinetics Limited | Wholesale & retail | 2002 |
| Websters Tax UK Cambridge Limited | Professional & scientific | 2005 |
| Webtec Limited | Extraterritorial | 1947 |
| Webtec Products Limited | Manufacturing | 1964 |
| Webweavelabs Ltd | Information & communication | 2024 |
| Welbourns of Wisbech Limited | Wholesale & retail | 2000 |
| Weldlogic Europe Limited | Manufacturing | 1996 |
| Wendy's World Limited | Other services | 2023 |
| Western Himera Limited | Professional & scientific | 1996 |
| Westmoreland Property Developments Limited | Construction | 2007 |
| Whites Carpentry Limited | Manufacturing | 2004 |
| Willow Assets Ltd | Administrative & support | 2020 |
| Winter & Co. UK Limited | Wholesale & retail | 1971 |
| Wisbech Vehicle Exchange and Motor Fund Limited | Wholesale & retail | 1994 |
| Wood FEN Lodge Limited | Hospitality | 2007 |
| Woody Clark Limited | Arts & recreation | 1998 |
| Wothorpe Towers Preservation Trust | Education | 2005 |
| Wren Property Rentals Ltd | Real estate | 2026 |
| Wrights (Gamlingay) Limited | Manufacturing | 1961 |
| Young People March Limited | Health & social care | 2006 |
| Young World Holdings Limited | Administrative & support | 2002 |
| Your Vision Property Solutions Ltd | Construction | 2022 |
| ZHC Systems Limited | Manufacturing | 2003 |
| ZOE Webster Limited | Wholesale & retail | 2007 |