| Wiltshire Elms Limited | Hospitality | 2018 |
| Windrush Coach Solutions Ltd | Transport & logistics | 2024 |
| Wiseman Holdings Limited | Financial services | 2017 |
| Witney Welding Ltd | Manufacturing | 2018 |
| Wolf Moon Ltd | Professional & scientific | 2024 |
| Woodstock Advisory Limited | Professional & scientific | 2026 |
| Woodstock and Bladon News Limited | Professional & scientific | 1990 |
| Woodstock Bear Club Ltd | Health & social care | 2021 |
| Woodstock Coffee Shop Limited | Wholesale & retail | 2017 |
| Woodstock Designs Limited | Professional & scientific | 2026 |
| Woodstock Law Limited | Professional & scientific | 2013 |
| Woodstock Music Ltd | Information & communication | 2024 |
| Woodstock Opticians Limited | Health & social care | 2013 |
| Woodstock Pet Care Ltd | Other services | 2022 |
| Woodstock Pilates Studio Limited | Arts & recreation | 2023 |
| Woodstock Plumbing & Heating Ltd | Construction | 2023 |
| Woodstock Residents Association Limited | Professional & scientific | 1995 |
| Woodstock Services Limited | Construction | 2025 |
| Woodstock Skin Clinic Limited | Other services | 2025 |
| Woodstock Wealth Management Ltd | Financial services | 2017 |
| Wootton Stores Limited | Wholesale & retail | 1991 |
| Wraystone Properties Ltd | Hospitality | 2026 |
| YC & CV LLP | | 2007 |
| Zclad Natural Stone Cladding Limited | Construction | 2020 |
| Zero Carbon Lamb Limited | Agriculture & fishing | 2022 |