| Vertikal Press Limited | Information & communication | 1999 |
| Victoria Crest Estates Limited | Construction | 2000 |
| Vinal Limited | Wholesale & retail | 1999 |
| Vincent O'Brien Design Limited | Arts & recreation | 2007 |
| Vitae Medical Limited | Health & social care | 2017 |
| Voluntary Impact Northamptonshire Ltd | Information & communication | 2001 |
| W. Cushway Limited | Construction | 2003 |
| Wacoal Ventures Ltd | Professional & scientific | 1947 |
| Walker & Gunn Limited | Professional & scientific | 1993 |
| Wanye Limited | Real estate | 2023 |
| Wappenham International Limited | Professional & scientific | 2002 |
| Warr Investments Limited | Real estate | 1975 |
| Washbrook Tyre and Exhaust Ltd | Wholesale & retail | 1998 |
| Washme UK Ltd | Extraterritorial | 2006 |
| Waterview Holdings Limited | Health & social care | 2017 |
| Watts Construction & Maintenance Limited | Construction | 2008 |
| Waymoe Ltd | Administrative & support | 2024 |
| Weatherby & Sons | | 1987 |
| Weatherbys Bank (Nominees) Limited | Financial services | 2002 |
| Weatherbys GSB Limited | Information & communication | 2002 |
| Weatherbys Trading Limited | Extraterritorial | 2002 |
| Welland Construction Co. Limited | Construction | 1973 |
| Welland Flooring Company (Corby) Limited | Construction | 1963 |
| Welland Garage Limited | Wholesale & retail | 2000 |
| Wellingborough Bowling Club,Limited | Arts & recreation | 1911 |
| Wellingborough Credit | Professional & scientific | 1961 |
| Wellingborough Domestic Appliances Limited | Wholesale & retail | 2005 |
| Wellingborough School | Education | 2003 |
| Wellingborough Signs Limited | Extraterritorial | 1988 |
| Wellpharm Limited | Wholesale & retail | 2003 |
| Welser Sections (UK) Limited | Wholesale & retail | 1993 |
| Whilton Locks Carpet Co. Ltd. | Wholesale & retail | 1998 |
| Whilton Marina Limited | Wholesale & retail | 1987 |
| Whitehouse Bricklaying Contractors Limited | Construction | 2002 |
| Whiteley, Proctor & Sutton | | 1997 |
| Wicksteed Engineering Limited | Manufacturing | 2003 |
| Wicksteedathome Limited | Wholesale & retail | 2000 |
| William Morgan Group Limited | Wholesale & retail | 1996 |
| Willow Hair Design Limited | Other services | 2006 |
| Wizard Integration Services | | 1998 |
| Wollaston Motors Limited | Wholesale & retail | 1961 |
| Woodley Holdings Limited | Manufacturing | 1958 |
| Woods Countryside and Leisure Ltd | Professional & scientific | 2013 |
| Woodshire Homes Limited | Construction | 2000 |
| Workconnexions Limited | Administrative & support | 2004 |
| WP Associates (UK) Limited | Administrative & support | 2007 |
| XPO Holdings UK III Limited | Financial services | 2024 |
| XPO UK Finance Unlimited | Financial services | 2024 |
| Zaldec Property Developments Limited | Wholesale & retail | 1992 |
| Zeta Interiors Limited | Wholesale & retail | 2002 |