| Write IT Marketing Limited | Manufacturing | 2021 |
| Wrope Maintenance Ltd | Administrative & support | 2014 |
| Wyer & Co Services Ltd | Administrative & support | 2026 |
| XB SP1 Ltd | Real estate | 2025 |
| Xhafa Contractor UK Limited | Construction | 2017 |
| XR Studios Ltd | Information & communication | 2025 |
| Y&P Services Ltd | Hospitality | 2021 |
| Yalcin Properties Ltd | Real estate | 2019 |
| Yalehome Limited | Construction | 2004 |
| YCF Maintenence & Management Ltd | Other services | 2025 |
| Yeboah E&G Limited | Wholesale & retail | 2024 |
| Yelkem Investments Limited | Real estate | 2018 |
| Yellow Gate Property Limited | Real estate | 2025 |
| Yellowstone Realty Ltd | Real estate | 2025 |
| YEM Besad Ltd | Real estate | 2024 |
| Yenson Developments Limited | Construction | 2024 |
| Yenson Group Holdings Limited | Financial services | 2024 |
| Yenson Limited | Professional & scientific | 2023 |
| Yering Young Ltd | Wholesale & retail | 2023 |
| Yesiloz Ltd | Wholesale & retail | 2020 |
| YF Plumbing Services Limited | Construction | 2015 |
| Yiddish Ltd | Professional & scientific | 2022 |
| Young Move Solutions Limited | Real estate | 2017 |
| Young Pathways Project Ltd | Education | 2026 |
| Your Island Limited | Wholesale & retail | 2022 |
| Your Local Business Limited | Information & communication | 2018 |
| Your Travel Butler Limited | Administrative & support | 2018 |
| YRG Consultancy Limited | Professional & scientific | 2025 |
| YT Zone Ltd | Wholesale & retail | 2019 |
| Yvsr Investments Ltd | Real estate | 2015 |
| ZAC Waldman Ltd | Arts & recreation | 2022 |
| Zaltron Limited | Administrative & support | 1999 |
| Zara 27 Limited | Other services | 2019 |
| Zaynab and Ameena Limited | Transport & logistics | 2023 |
| Zero Filter Limited | Wholesale & retail | 2024 |
| Zeus Volt Limited | Construction | 2025 |
| ZOE Tate Limited | Other services | 2021 |
| Zowta Limited | Information & communication | 2009 |