| Westview Gardens Ltd | Arts & recreation | 2025 |
| WFP Plasterers Limited | Construction | 1994 |
| Wigg Motor Engineers Limited | Wholesale & retail | 1991 |
| Winar International Ltd | Information & communication | 2023 |
| Wine Vaults Bar & Restaurant Limited | Hospitality | 2009 |
| Winston Woods Ltd | Agriculture & fishing | 2024 |
| Winzor-Saile Ltd | Agriculture & fishing | 2009 |
| Women WHO Thrive Ltd | Education | 2023 |
| Woodcroft Farm Barns Development Limited | Professional & scientific | 1999 |
| World of Blinds Limited | Wholesale & retail | 2000 |
| Wrail Consultancy Limited | Professional & scientific | 2021 |
| Wren River Interiors Limited | Arts & recreation | 2003 |
| Wright & Co Estate Agents Limited | Extraterritorial | 2014 |
| Wright & Co Rentals Limited | Extraterritorial | 2014 |
| Wrights Town & Country Ltd | Real estate | 2024 |
| Wynne Technologies Ltd | Professional & scientific | 2025 |
| Yare Books Limited | Wholesale & retail | 2014 |
| Youngman GAS Limited | Construction | 2004 |
| Your Mental Health Ltd | Health & social care | 2023 |
| Your Mortgage Solutions (Gorleston) Ltd | Financial services | 2005 |
| ZD1 Limited | Professional & scientific | 2026 |
| Zenn Yoga Ltd | Wholesale & retail | 2021 |
| ZOE Barker Draws Limited | Arts & recreation | 2022 |
| Zurkel Design Limited | Information & communication | 2002 |