| Woodridge House Building Services Limited | Construction | 2023 |
| Woodridge House Holdings Limited | Financial services | 2019 |
| Woodridge House Property Investments Limited | Real estate | 2016 |
| Woolley Project Management Limited | Financial services | 2004 |
| Woolleyconsulting Limited | Professional & scientific | 2023 |
| Woosh Consulting Limited | Professional & scientific | 2013 |
| Working Proof Limited | Information & communication | 2025 |
| Wortham Limited | Health & social care | 1977 |
| Wortham Stores Limited | Wholesale & retail | 2026 |
| Worthingtonscatering Ltd | Hospitality | 2023 |
| Wrensgate Limited | Administrative & support | 2012 |
| Wright Engineering GAS Ltd | Wholesale & retail | 2019 |
| XL Bells Consultancy Limited | Professional & scientific | 2025 |
| XP Consulting and Accounting Limited | Professional & scientific | 2020 |
| XTP Consulting Limited | Professional & scientific | 2017 |
| Y4 Technical Services Ltd | Professional & scientific | 2021 |
| Yardell Joinery Limited | Manufacturing | 2010 |
| YD Classic Limited | Wholesale & retail | 2022 |
| Your Payroll Limited | Administrative & support | 2017 |
| Zahara Consulting Limited | Professional & scientific | 2025 |
| ZAP Electrics Ltd | Construction | 2024 |
| Zeata Security Ltd | Information & communication | 2010 |
| ZEL Components Ltd | Wholesale & retail | 2024 |
| Ziplings Limited | Real estate | 2018 |
| Zoay Limited | Professional & scientific | 2025 |
| ZOE Brown Consulting Limited | Professional & scientific | 2025 |
| Zukari Limited | Wholesale & retail | 2001 |