| Your Equity Release Centre Ltd | Financial services | 2019 |
| Your Mortgage Centre Limited | Financial services | 2006 |
| Yourspares Limited | Wholesale & retail | 2013 |
| YSJ Consulting Ltd | Information & communication | 2017 |
| Yule Tree Ltd | Manufacturing | 2022 |
| Zabo Projects Ltd | Construction | 2018 |
| Zaikovsky Enterprise Limited | Professional & scientific | 2006 |
| Zand Holdings Ltd | Financial services | 2022 |
| Zara Stud & Training Centre Ltd. | Agriculture & fishing | 1993 |
| Zara's Doggy Day Care Limited | Other services | 2014 |
| Zddc Services Limited | Other services | 2025 |
| ZEBRA365 Ltd | Real estate | 2011 |
| ZED Carpentry Ltd | Construction | 2016 |
| Zedmatch Limited | Wholesale & retail | 1993 |
| Zencentra Limited | Education | 2026 |
| Zephyr Industrial Assets Ltd | Administrative & support | 2026 |
| Zera Blade Ltd | Other services | 2025 |
| Zero Tolerance Pest Control Limited | Administrative & support | 2018 |
| Zero-In Solutions Limited | Professional & scientific | 2022 |
| Zimizim Ltd | Construction | 2021 |
| Zindalo Ltd | Information & communication | 2025 |
| ZMG Consulting Limited | Professional & scientific | 2008 |
| ZOE Blumer Consulting Ltd | Professional & scientific | 2024 |
| Zoolook Technologies Ltd | Professional & scientific | 2023 |
| Zoom Internet Limited | Information & communication | 2015 |
| ZYP Weld Limited | Manufacturing | 2001 |