| Woodchester Valley Freehold Limited | Households | 2012 |
| Woodchester Valley Services Limited | Administrative & support | 2020 |
| Woodchester Valley Vineyard Limited | Agriculture & fishing | 2011 |
| Woodchester Village Shop Limited | Wholesale & retail | 2014 |
| Woodcomm UK Ltd | Information & communication | 2024 |
| Woodleigh Property Limited | Real estate | 2016 |
| Woofington Park Ltd | Other services | 2024 |
| Working Souls Ltd | Extraterritorial | 2019 |
| Worksop Wind Park Limited | Energy | 2006 |
| World Catering Ltd | Hospitality | 2025 |
| WSP Law Investments Limited | Financial services | 2022 |
| WSP Solicitors Limited | Professional & scientific | 2010 |
| WWD Trading Ltd | Wholesale & retail | 2016 |
| Wyldingwear Limited | Wholesale & retail | 2021 |
| Xlerate Consultants Ltd | Professional & scientific | 2023 |
| Yasmin a Darling Consultancy Ltd | Professional & scientific | 2021 |
| Yates-Round Property Limited | Real estate | 2021 |
| Yellowstone Leisure Limited | Households | 2023 |
| Yendall Consultancy Ltd | Wholesale & retail | 2017 |
| Yossi Steinberg Ltd | Health & social care | 2011 |
| Young Advisory Limited | Professional & scientific | 2022 |
| Young Dragons DEN Limited | Administrative & support | 2019 |
| Youngs Engineering Ltd | Manufacturing | 2006 |
| Your Music Limited | Information & communication | 1971 |
| Yugo: Exercise Engagement Pioneers Ltd | Education | 2022 |
| Zardi & Zardi Limited | Manufacturing | 2004 |
| Zeera Indian Restaurant Ltd | Hospitality | 2021 |
| Zenzo Digital Ltd | Information & communication | 2020 |
| Zero Carbon Adventures Ltd | Administrative & support | 2025 |
| Zinzisa Limited | Other services | 2013 |
| Zivilcourage Ltd | Information & communication | 2015 |
| Zolla Wheels Limited | Wholesale & retail | 2024 |
| Zulu Maintenance Limited | Administrative & support | 2014 |
| Zuuk Limited | Information & communication | 1996 |
| Zybersafe Ltd | Information & communication | 2020 |