| Worldwide&Co Ltd | Wholesale & retail | 2025 |
| WP 29 Property Ltd | Real estate | 2025 |
| WPF Ltd | Transport & logistics | 2024 |
| Wraps by AJ Ltd | Other services | 2019 |
| Wright 4 Racing Ltd | Arts & recreation | 2023 |
| Wright Choice Education Limited | Administrative & support | 2024 |
| WS Sales Agency Limited | Agriculture & fishing | 2026 |
| Wsmgresellerz Ltd | Wholesale & retail | 2026 |
| WWW Deliveries Ltd | Transport & logistics | 2024 |
| Wychnor Trees Limited | Agriculture & fishing | 2002 |
| Wylet Limited | Real estate | 2009 |
| XAU Solutions Ltd | Construction | 2025 |
| Xavier Academy Limited | Households | 2020 |
| Xavier Healthcare Limited | Health & social care | 2010 |
| Xcell Ltd | Wholesale & retail | 2023 |
| XEN Housing Ltd | Real estate | 2026 |
| Xlant Consultancy Services Ltd | Professional & scientific | 2017 |
| XP Gaming Ltd | Wholesale & retail | 2026 |
| Xquizit Healthcare Ltd | Administrative & support | 2023 |
| Xtra Humongous Ltd | Professional & scientific | 2014 |
| Xura Limited | Arts & recreation | 2026 |
| YAN 64 Ltd | Transport & logistics | 2017 |
| Yarnell Developments Limited | Real estate | 2009 |
| Yash & Yashvi Ltd | Real estate | 2024 |
| Ycfwm Ltd | Health & social care | 2021 |
| Yellowbird Properties Ltd | Real estate | 2015 |
| Yenton Close Consultancy Ltd | Professional & scientific | 2026 |
| Ynomia Holdings Limited | Financial services | 2022 |
| Ynomia Ltd | Information & communication | 2019 |
| YOU Give Life Ltd | Manufacturing | 2026 |
| Your Beautique Limited | Other services | 2010 |
| Your Equity Limited | Professional & scientific | 2009 |
| Your Gifthorse Limited | Wholesale & retail | 2001 |
| Your Happy Abode Limited | Real estate | 2024 |
| Your House by Rous Ltd | Construction | 2020 |
| Your Performance Group Ltd | Arts & recreation | 2024 |
| Your Tax Limited | Professional & scientific | 2012 |
| Yuchu Business Consultancy Ltd | Other services | 2024 |
| Yuppie MOM Ltd | Hospitality | 2023 |
| Yusufeo Ltd | Information & communication | 2016 |
| Z24-7 Services Ltd | Administrative & support | 2019 |
| Zakharia MFL001 Limited | Health & social care | 2024 |
| Zanotelli Ltd | Professional & scientific | 2026 |
| Zantrobuild Ltd | Information & communication | 2025 |
| Zeal Driving Solutions Ltd | Administrative & support | 2023 |
| ZEN Graphics Limited | Manufacturing | 2017 |
| Zepwin Limited | Manufacturing | 2025 |
| Zero Industries Ltd | Administrative & support | 2022 |
| ZHI Xing Tang Chinese Medical Centre Limited | Health & social care | 2000 |
| Zhi-Mae & Co. Ltd | Real estate | 2025 |
| Zhong HUA Ltd | Hospitality | 2025 |
| Ziesha Ltd | Hospitality | 2016 |
| Zieson Technical & Food Safety Consultancy Ltd | Professional & scientific | 2022 |
| Zion Tech MK Ltd | Information & communication | 2019 |
| Zohreh MN Limited | Health & social care | 2017 |