| YP Catering Ltd | Hospitality | 2025 |
| YPS Development Ltd | Real estate | 2019 |
| Yummy Yummy Food Limited | Hospitality | 2023 |
| Yust Infra Networks UK Limited | Information & communication | 2024 |
| Z&H Contracting Ltd | Construction | 2025 |
| ZA Mind Maps Ltd | Education | 2023 |
| ZA Urology Ltd | Health & social care | 2024 |
| Zabka Polski Lincoln Limited | Wholesale & retail | 2017 |
| Zaddle Internet Marketing Limited | Professional & scientific | 2015 |
| Zaddle Limited | Extraterritorial | 2015 |
| Zahber Property Ltd | Real estate | 2024 |
| Zaib Attires Limited | Wholesale & retail | 2025 |
| ZAM ZAM Food Store LNC Ltd | Wholesale & retail | 2025 |
| ZAP Solutions Limited | Transport & logistics | 2023 |
| Zapalski Investment Limited | Professional & scientific | 2014 |
| Zarah Developments Limited | Construction | 2020 |
| Zarah Social Investments Ltd | Financial services | 2021 |
| Zarb Bespoke Studio Ltd | Wholesale & retail | 2025 |
| Zavache& Limited | Manufacturing | 2023 |
| Zavi Trades Ltd | Hospitality | 2025 |
| Zawora Delivery Ltd | Transport & logistics | 2021 |
| Zazimfind Ltd | Information & communication | 2026 |
| ZCI Ltd | Transport & logistics | 2025 |
| ZEE Warnes Ltd | Transport & logistics | 2026 |
| Zeeshan Ecom Ltd | Wholesale & retail | 2026 |
| Zelvander Limited | Real estate | 2021 |
| ZEN (Lincoln) Ltd | Transport & logistics | 2015 |
| Zenith Haven Properties Ltd | Real estate | 2025 |
| Zennvira Ltd | Manufacturing | 2026 |
| Zenscape Ltd | Administrative & support | 2018 |
| Zentro Group Ltd | Professional & scientific | 2025 |
| Zero Altitude Limited | Professional & scientific | 2006 |
| Zero Citizen Ltd | Information & communication | 2022 |
| Zero EV Limited | Construction | 2017 |
| Zest Theatre | Arts & recreation | 2011 |
| Zheng Ltd | Wholesale & retail | 2016 |
| Zigzarc Ltd | Information & communication | 2025 |
| Zion Homes & Properties Limited | Construction | 2020 |
| ZLF Limited | Professional & scientific | 2022 |
| Zone Systems Limited | Construction | 2003 |
| Zotali Limited | Hospitality | 2025 |
| Ztoacars Ltd | Wholesale & retail | 2025 |
| Zucci Restaurant Limited | Hospitality | 2012 |
| Zulu BOY Holdings Ltd | Financial services | 2017 |
| Zuluvision Enterprises Limited | Professional & scientific | 2024 |
| Zulér Wears Global Concepts Ltd | Wholesale & retail | 2025 |
| Zygobits Ltd | Information & communication | 2025 |
| Zyna Limited | Administrative & support | 2010 |
| Zzeus Limited | Education | 2011 |