| YRP & Co Ltd | Wholesale & retail | 2019 |
| YRP98 Co Ltd | Real estate | 2025 |
| YS Shops Ltd | Wholesale & retail | 2026 |
| YSA98 Ltd | Hospitality | 2026 |
| YSJ Tang Limited | Hospitality | 2013 |
| YTF Holdings Ltd | Real estate | 2020 |
| Yuanye Property Ltd | Real estate | 2023 |
| Yulskie Express Ltd | Transport & logistics | 2025 |
| YUM Street Catering Limited | Hospitality | 2018 |
| YUM Street Events Limited | Hospitality | 2021 |
| Yumco Limited | Wholesale & retail | 2025 |
| Yummy POT Limited | Hospitality | 2022 |
| Yummy Thai Limited | Hospitality | 2017 |
| YUN House Ltd | Hospitality | 2025 |
| YUN LAI Ltd | Hospitality | 2023 |
| Yunusoglu Ltd | Wholesale & retail | 2017 |
| Yunusoglu Southampton Limited | Transport & logistics | 2021 |
| Yusuf Arda Limited | Hospitality | 2018 |
| Yuvmak Properties Limited | Real estate | 2017 |
| Yvonne Healthcare Services Ltd | Administrative & support | 2016 |
| Z & S Properties Limited | Real estate | 2018 |
| Z Adventure Limited | Wholesale & retail | 2023 |
| Z Shah Auto Bodyworks Ltd | Wholesale & retail | 2024 |
| Z&T Private Ltd | Wholesale & retail | 2026 |
| Z21 Limited | Professional & scientific | 2017 |
| ZAC Renovations Ltd | Construction | 2026 |
| Zactiv World Limited | Arts & recreation | 2025 |
| Zactrans Ltd | Transport & logistics | 2017 |
| Zaflixa Limited | Wholesale & retail | 2026 |
| Zafwan Limited | Hospitality | 2024 |
| Zagarna Ltd | Manufacturing | 2025 |
| Zaha&Carmen Ltd | Transport & logistics | 2017 |
| Zahan Electrical Ltd | Construction | 2025 |
| Zahl Limited | Professional & scientific | 2022 |
| Zahra Design Studio Limited | Information & communication | 2010 |
| Zainab AL Qaim Limited | Hospitality | 2026 |
| Zaisan Projects Limited | Construction | 2025 |
| Zaleta Ltd | Transport & logistics | 2015 |
| ZAM ZAM Foods Ltd | Wholesale & retail | 2026 |
| ZAMANI47 Ltd | Real estate | 2026 |
| Zamano''s Pizza Ltd | Hospitality | 2018 |
| Zamano's Tasty Pizza Ltd | Hospitality | 2023 |
| ZAMFIR87 Ltd | Transport & logistics | 2019 |
| Zami Services Ltd | Transport & logistics | 2022 |
| Zana Smart Barber Ltd | Other services | 2025 |
| Zandon SP Limited | Other services | 2025 |
| Zaneta Group Ltd | Financial services | 2023 |
| Zanko Cleaning Ltd | Administrative & support | 2026 |
| Zanzibar Flooring Limited | Construction | 2012 |
| ZAP Creative Limited | Professional & scientific | 2011 |
| Zappie Network Services Ltd | Information & communication | 2022 |
| Zara Green Healthcare Ltd | Health & social care | 2024 |
| Zara Trans Ltd | Transport & logistics | 2021 |
| Zarchie Properties Ltd | Real estate | 2025 |
| Zata Corp (UK) Limited | Information & communication | 2025 |
| Zayden Foods Ltd | Hospitality | 2014 |
| ZCC Ltd | Agriculture & fishing | 2018 |
| Zebra Care Limited | Wholesale & retail | 2026 |
| Zebra GAS Ltd | Construction | 2020 |
| Zebra Home Services Limited | Construction | 2013 |
| Zebra Transport Ltd | Transport & logistics | 2016 |
| Zee&Lennie's Playhouse Limited | Hospitality | 2025 |
| Zegami Limited | Information & communication | 2015 |
| Zelda Investments Limited | Real estate | 2007 |
| ZEM ZEM Ltd | Hospitality | 2025 |
| Zemakon Limited | Administrative & support | 2023 |
| Zemog Capital Limited | Real estate | 2024 |
| Zemytm Ltd | Construction | 2026 |
| ZEN Drawing Ltd | Professional & scientific | 2022 |
| ZEN Global Solutions Ltd | Transport & logistics | 2018 |
| ZEN Heating Ltd | Construction | 2024 |
| ZEN Pigeon Ltd | Arts & recreation | 2016 |
| Zener Marine Electrical Services Ltd | Manufacturing | 2019 |
| Zenergi Corporate Trustee Limited | Other services | 2012 |
| Zenergi EBT Payroll Limited | Professional & scientific | 2022 |
| Zenergi Group Limited | Professional & scientific | 2012 |
| Zenergi Limited | Professional & scientific | 2003 |
| Zenith & Beyond Ltd | Construction | 2020 |
| Zenithmart Ltd | Wholesale & retail | 2025 |
| Zenjis Hub Ltd | Wholesale & retail | 2026 |
| Zenkeys Properties Ltd | Real estate | 2024 |
| Zenlo Group Limited | Financial services | 2023 |
| Zenlo Recruitment Limited | Administrative & support | 2023 |
| Zensen Ltd | Hospitality | 2016 |
| Zentrum Fitted Kitchens Ltd. | Wholesale & retail | 2012 |
| Zentryx Group Limited | Administrative & support | 2025 |
| Zepay Contracting Ltd | Other services | 2021 |
| Zepay Ltd | Other services | 2021 |
| Zephyr Handpans Limited | Manufacturing | 2017 |
| Zeppelin Bidco Limited | Financial services | 2022 |
| Zeppelin Midco 2 Limited | Financial services | 2022 |
| Zerco Trading Limited | Wholesale & retail | 2012 |
| Zerda Solutions Ltd | Transport & logistics | 2019 |
| Zero Degrees Sailing Ltd | Manufacturing | 2020 |
| Zero Foxgiven Ltd | Professional & scientific | 2018 |
| Zero Motors Limited | Wholesale & retail | 2022 |
| Zero Rank Acquisition Ltd | Information & communication | 2018 |
| Zero Signal Ltd | Wholesale & retail | 2025 |
| Zero-Sum Consulting Ltd | Administrative & support | 2011 |
| Zerobase Environmental Consulting Ltd | Professional & scientific | 2026 |