| ZG Wealth Management Limited | Real estate | 2025 |
| ZGR Solutions Limited | Construction | 2014 |
| ZH Wealth Management Limited | Real estate | 2016 |
| ZIA Limited | Administrative & support | 1989 |
| ZIA Mazhar Limited | Health & social care | 2014 |
| Ziaur Rahman International Research Centre(Zrirc) UK Ltd | Professional & scientific | 2022 |
| Zide Ltd | Hospitality | 2020 |
| Zimax Ltd | Construction | 2025 |
| Zimlux Limited | Information & communication | 2019 |
| Zinc Corporate Holdings Ltd | Financial services | 2024 |
| Zinga Financial Services Limited | Financial services | 2016 |
| Zipthru Limited | Wholesale & retail | 2023 |
| Zirtek Ltd | Information & communication | 2011 |
| Zizi Mart Ltd | Wholesale & retail | 2023 |
| ZK & Group Limited | Professional & scientific | 2025 |
| ZK Packaging Ltd | Wholesale & retail | 2026 |
| Zkcp Ltd | Administrative & support | 2025 |
| ZM Law Consultant Ltd | Professional & scientific | 2025 |
| ZMK Facilities Management Limited | Real estate | 2026 |
| ZMZ85 Ltd | Construction | 2025 |
| ZOE Osborne Tattoos Limited | Other services | 2026 |
| Zohal Limited | Transport & logistics | 2026 |
| Zone Motors Ltd | Wholesale & retail | 2020 |
| Zorin Construction Ltd | Construction | 2024 |
| Zorin Investments Ltd | Real estate | 2026 |
| Zortec Ltd | Information & communication | 2019 |
| Zotta AI Ltd | Information & communication | 2026 |
| Zsproevents Ltd | Information & communication | 2022 |
| ZSQ Care Services Ltd | Health & social care | 2025 |
| ZSQ Group Ltd | Financial services | 2024 |
| ZSU Transport Ltd | Transport & logistics | 2020 |
| ZTO International Logistic UK Ltd | Transport & logistics | 2022 |
| ZV Brands Limited | Wholesale & retail | 2025 |
| Zyntera Media Group Limited | Information & communication | 2026 |
| Zyphora Global Limited | Wholesale & retail | 2025 |
| Zyrus Food Limited | Hospitality | 2020 |