| Your Property Group Ltd | Real estate | 2018 |
| Your Protein (Midlands) Ltd | Wholesale & retail | 2015 |
| Your Student City Ltd | Information & communication | 2019 |
| Your Studio Room Ltd | Real estate | 2026 |
| Your Visuals Ltd | Professional & scientific | 2021 |
| Your Vocal Local Ltd | Wholesale & retail | 2016 |
| Your World Social Community Interest Company | Hospitality | 2021 |
| Yournextcar Limited | Administrative & support | 2007 |
| Yousaf Edge Ltd | Wholesale & retail | 2026 |
| Youth Medaid CIC | Education | 2022 |
| Youth-Services C.I.C. | Education | 2024 |
| Youthifull Ltd | Health & social care | 2024 |
| Youwiz Ltd | Wholesale & retail | 2026 |
| YRS Wines & Beers Ltd | Wholesale & retail | 2025 |
| YSA Transport Ltd | Transport & logistics | 2022 |
| Ysra Beauty Ltd | Other services | 2023 |
| Yudiva Ltd | Health & social care | 2025 |
| Yuki Property Limited | Real estate | 2023 |
| Yumihome Ltd | Wholesale & retail | 2023 |
| Yummiqa Limited | Hospitality | 2025 |
| Yummy Jasmine Limited | Hospitality | 2021 |
| Yummy Mount Limited | Hospitality | 2023 |
| Yunity Ltd | Arts & recreation | 2018 |
| Yuppies Lounge Limited | Hospitality | 2020 |
| Yusloko Logistics Limited | Wholesale & retail | 2018 |
| Yusuf Bukhari Ltd | Wholesale & retail | 2026 |
| Yuvconsult Ltd | Information & communication | 2018 |
| YV Properties Ltd | Real estate | 2023 |
| Yvale Limited | Information & communication | 2025 |
| Z S & Son's Transport Ltd | Transport & logistics | 2023 |
| Z&A Transport Ltd | Transport & logistics | 2025 |
| Z.L.T. Angling Products Limited | Manufacturing | 1986 |
| Z.U.S.A. Group Holdings Limited | Financial services | 2024 |
| ZA Digital Solutions Ltd | Information & communication | 2026 |
| ZA ZA Bazaar Limited | Hospitality | 2014 |
| ZAA Global Ltd | Wholesale & retail | 2025 |
| Zaar Construction Limited | Construction | 2025 |
| Zabethj Hair & Clothing Ltd | Wholesale & retail | 2025 |
| Zacks Cutz Ltd | Other services | 2020 |
| Zaezoeus Ltd | Transport & logistics | 2021 |
| ZAF Group Limited | Wholesale & retail | 2026 |
| Zagros Furniture Limited | Wholesale & retail | 2021 |
| Zagus Consultancy Ltd | Information & communication | 2016 |
| ZAH Craft Ltd | Wholesale & retail | 2026 |
| Zahid Sons Ltd | Wholesale & retail | 2026 |
| Zahra Mart Ltd | Wholesale & retail | 2026 |
| ZAI Electrical Ltd | Construction | 2026 |
| Zaied Logistics Ltd | Transport & logistics | 2019 |
| Zaik Properties Limited | Real estate | 2017 |
| Zaim Industry Limited | Information & communication | 2024 |
| Zainmart Ltd | Wholesale & retail | 2026 |
| Zakcodex Ltd | Information & communication | 2026 |
| Zaki Property Group Limited | Real estate | 2020 |
| Zalera Ltd | Construction | 2025 |
| Zaman Estates Ltd | Hospitality | 2024 |
| Zaman Shop Ltd | Wholesale & retail | 2026 |
| Zamani Group Ltd | Wholesale & retail | 2025 |
| Zamo Construction Ltd | Construction | 2025 |
| Zampha Auto LMT Limited | Wholesale & retail | 2024 |
| Zamzam Shawarma Ltd | Hospitality | 2025 |
| Zander Freight Limited | Transport & logistics | 2022 |
| Zandland Ltd | Information & communication | 2017 |
| Zane Incorporated Ltd | Information & communication | 2026 |
| Zaneta Resource Ltd | Administrative & support | 2026 |
| Zann Limited | Transport & logistics | 2019 |
| Zanoh Ltd | Health & social care | 2023 |
| Zanzibar Social Ltd | Hospitality | 2026 |
| Zapzy Shop Ltd | Wholesale & retail | 2026 |
| ZAQ Trading Limited | Wholesale & retail | 2015 |
| Zara's (Midlands) Limited | Wholesale & retail | 2015 |
| Zarae Group Ltd | Professional & scientific | 2024 |
| Zargul Chandia Brand Ltd | Wholesale & retail | 2025 |
| Zarqa Rani Enterprise Ltd | Transport & logistics | 2023 |
| Zarwali Mart Ltd | Wholesale & retail | 2025 |
| Zary Ltd | Construction | 2022 |
| Zash Group Ltd | Financial services | 2023 |
| Zauk Estates Limited | Real estate | 2019 |
| Zaun Group Limited | Financial services | 2022 |
| Zavest Cosmetics Limited | Wholesale & retail | 2022 |
| Zavest Properties Limited | Real estate | 2022 |
| Zaviyan Network Ltd | Wholesale & retail | 2025 |
| Zayyan Property Investments Ltd | Real estate | 2020 |
| ZB Fire Ltd | Construction | 2024 |
| ZC Management Services Ltd | Real estate | 2024 |
| ZCB Digital Ltd | Manufacturing | 2026 |
| ZDS Services Limited | Construction | 2020 |
| ZE Tach Limited | Manufacturing | 2025 |
| Zeabbie Limited | Wholesale & retail | 2024 |
| Zead Limited | Construction | 2024 |
| Zeal Products Limited | Administrative & support | 1998 |
| Zebelovicius Ltd | Professional & scientific | 2025 |
| Zebravon Ltd | Wholesale & retail | 2019 |
| Zeckro LLP | | 2014 |
| Zeel Holdings Limited | Financial services | 2019 |
| Zeel Solutions Limited | Information & communication | 2007 |
| Zeeone Ltd | Wholesale & retail | 2026 |
| Zeesquared Ltd | Health & social care | 2025 |
| Zeest Technologies UK Ltd | Wholesale & retail | 2025 |
| Zekai Ltd | Health & social care | 2026 |
| ZEN Media Agency Ltd | Information & communication | 2021 |