| Vital 4 Growth UK Limited | Professional & scientific | 2025 |
| VM Professional Ltd | Administrative & support | 2026 |
| VP Blades Ltd | Professional & scientific | 2025 |
| W R D (Essex) Ltd | Manufacturing | 1957 |
| Walby Aesthetics Spa Ltd | Other services | 2026 |
| Walter Joseph UK Limited | Professional & scientific | 2019 |
| Warm Glow Conservatory Roofs Limited | Construction | 2025 |
| Warm Happy Co. Ltd | Construction | 2023 |
| Warm Roof NE Limited | Construction | 2025 |
| Washington Martial Arts Academy CIC | Education | 2024 |
| WDN Ltd | Construction | 2014 |
| Wearcareers Ltd | Education | 2023 |
| Wearclass Services Ltd | Administrative & support | 2020 |
| Wearside Arboriculture Ltd | Administrative & support | 2025 |
| Wearside Direct Cremations Ltd | Extraterritorial | 2025 |
| Wearside Joinery Ltd | Construction | 2020 |
| Wearsidelnr Ltd | Education | 2025 |
| Weblication Limited | Information & communication | 2001 |
| Wellworth Limited | Construction | 1999 |
| Wessington Cryogenics Limited | Manufacturing | 1984 |
| Wessington Topco Limited | Financial services | 2022 |
| Westgate Road Apartments Ltd | Hospitality | 2021 |
| Westruk Limited | Professional & scientific | 2023 |
| What Property Limited | Real estate | 2020 |
| Wheatley Hill Property Company Limited | Health & social care | 2012 |
| Whitworth Accounting Limited | Professional & scientific | 2023 |
| Whph Consulting Ltd | Professional & scientific | 2023 |
| Wilde Investco Ltd | Financial services | 2022 |
| William Coulthard and Company Limited | Professional & scientific | 2010 |
| Winch Design & Construction Ltd | Construction | 2019 |
| Windowfix Repairs (North East) Ltd | Construction | 2025 |
| Wing Hong & Company Limited | Wholesale & retail | 2003 |
| Wing KEE Limited | Hospitality | 2012 |
| Wish Domains Limited | Information & communication | 2019 |
| WJM Quigley Limited | Construction | 1995 |
| WK Logistics Limited | Wholesale & retail | 2011 |
| WLS Recruitment Solutions Ltd | Administrative & support | 2022 |
| Woodside Lets NE Ltd | Real estate | 2021 |
| Woodside Properties NE Ltd | Real estate | 2020 |
| Woodside Property Management Services Ltd | Real estate | 2024 |
| Woodstone Aesthetics Ltd | Health & social care | 2022 |
| Worldwide Plant & Equipment Ltd | Administrative & support | 2025 |
| WOW Coffee Ltd | Wholesale & retail | 2025 |
| Wright Proper Tea Ltd | Real estate | 2026 |
| Wrightway Driving School Ltd | Education | 2019 |
| Wyrd Entertainment Ltd | Information & communication | 2009 |
| ZIP Supplies Ltd | Wholesale & retail | 2025 |