| Z&Z Medical Services Ltd | Health & social care | 2023 |
| Z-Drive Ltd | Transport & logistics | 2021 |
| Z-Works Ltd | Administrative & support | 2025 |
| Z.A Driving School Ltd | Education | 2023 |
| Z.H. Law Ltd | Professional & scientific | 2024 |
| Z.M. Enterprise Ltd | Administrative & support | 2009 |
| ZA Equities Ltd | Extraterritorial | 2021 |
| ZA Taxis Ltd | Transport & logistics | 2026 |
| ZAA HQ Limited | Professional & scientific | 2026 |
| Zaah Limited | Wholesale & retail | 2021 |
| Zaam Zaam Limited | Wholesale & retail | 2019 |
| Zaara 2 Limited | Hospitality | 2016 |
| Zaara 3 Limited | Hospitality | 2018 |
| Zaara 7 Limited | Hospitality | 2023 |
| Zaara Holdings Limited | Professional & scientific | 2016 |
| Zaarvel Limited | Administrative & support | 2017 |
| ZABI07 Ltd | Wholesale & retail | 2025 |
| Zabiha Halal Ltd | Wholesale & retail | 2018 |
| Zabiha Ltd | Wholesale & retail | 2018 |
| Zacharie United Ltd | Wholesale & retail | 2018 |
| Zachary’S Cloth Nappies & Accessories T/A Bells Bumz Ltd | Wholesale & retail | 2020 |
| Zackyacoub Limited | Real estate | 2019 |
| Zact Media Limited | Information & communication | 2024 |
| ZAD for Education and Training Ltd | Education | 2025 |
| ZAF Pharma Ltd | Professional & scientific | 2023 |
| ZAF UK Traders Ltd | Wholesale & retail | 2025 |
| Zaf's Goodies Ltd | Wholesale & retail | 2023 |
| Zafa Price UK Limited | Wholesale & retail | 2014 |
| Zafar Aftab Ltd | Manufacturing | 2015 |
| Zaffron Fencing Ltd | Wholesale & retail | 2026 |
| Zaffron Trading Ltd | Wholesale & retail | 2023 |
| Zaflar PVT Ltd | Wholesale & retail | 2019 |
| Zaghawa Association Leicester Ltd | Public administration | 2025 |
| Zagros Courier Ltd | Transport & logistics | 2025 |
| Zahida Ltd | Professional & scientific | 2015 |
| Zahira Holdings Limited | Financial services | 2025 |
| Zahira Infosec Ltd | Professional & scientific | 2020 |
| Zahira Properties Ltd | Real estate | 2025 |
| Zahr Sehl General Contracting Limited | Construction | 2025 |
| Zahra Day Nursery Ltd | Education | 2019 |
| Zahra Eyecare Ltd | Administrative & support | 2020 |
| Zahra Restaurants Limited | Hospitality | 2021 |
| Zahra Trading Inc Ltd | Wholesale & retail | 2023 |
| ZAI Sylla Limited | Wholesale & retail | 2026 |
| Zaid Property Ventures Limited | Real estate | 2026 |
| Zaids Packaging Ltd | Administrative & support | 2025 |
| Zaika Palace Ltd | Hospitality | 2026 |
| Zaika Place Limited | Hospitality | 2023 |
| Zain Asset Management Ltd | Professional & scientific | 2021 |
| Zain Auto Paradise Ltd | Wholesale & retail | 2023 |
| Zain Surgery Ltd | Health & social care | 2019 |
| Zainaa Ltd | Wholesale & retail | 2019 |
| Zainab Aura Ltd | Wholesale & retail | 2025 |
| Zainab Ghumra Limited | Professional & scientific | 2014 |
| Zainab Investments Limited | Real estate | 2002 |
| Zaintec International Limited | Wholesale & retail | 2009 |
| Zaintellia Ltd | Information & communication | 2025 |
| Zainulpk Limited | Real estate | 2010 |
| Zainvia Limited | Wholesale & retail | 2025 |
| Zaiqa Box Ltd | Hospitality | 2025 |
| Zaiton Ltd | Administrative & support | 2026 |
| Zaitoun Site Services Ltd | Administrative & support | 2025 |
| Zaitun National Property Buyer and Construction Contractor Ltd | Construction | 2026 |
| Zajac Consulting Services Ltd | Professional & scientific | 2023 |
| ZAK Chenia Ltd | Professional & scientific | 2023 |
| ZAK Design Ltd | Manufacturing | 2019 |
| ZAK Halal Ltd | Wholesale & retail | 2025 |
| ZAK Platters Ltd | Hospitality | 2024 |
| ZAK Property Investments Ltd | Real estate | 2025 |
| ZAK TEN Ltd | Transport & logistics | 2023 |
| Zak's Cafe Limited | Hospitality | 2012 |
| Zaka Stocks Ltd | Wholesale & retail | 2026 |
| Zaki Ltd | Construction | 2025 |
| Zaki Spice Ltd | Wholesale & retail | 2025 |
| Zaki Traders Limited | Wholesale & retail | 2022 |
| Zakjecom Ltd | Wholesale & retail | 2024 |
| Zaks Wholesale Ltd | Wholesale & retail | 2026 |
| Zakstar Limited | Wholesale & retail | 2024 |
| Zakster Ltd | Manufacturing | 2021 |
| Zalew Trans Ltd | Transport & logistics | 2019 |
| Zalint Ltd | Professional & scientific | 2025 |
| Zallah Limited | Wholesale & retail | 2024 |
| ZAM Foods Limited | Extraterritorial | 2014 |
| ZAM Investments Ltd | Real estate | 2018 |
| ZAM ZAM Halal Butchers & Grocery Ltd | Wholesale & retail | 2026 |
| ZAM ZAM Supermarket Ltd | Wholesale & retail | 2023 |
| Zamaratti Ltd | Wholesale & retail | 2018 |
| Zameu Ltd | Households | 2023 |
| Zami Holdings Ltd | Financial services | 2025 |
| Zamiah Ltd | Wholesale & retail | 2024 |
| Zamna Limited | Information & communication | 1998 |
| Zamrashd Medical Ltd | Health & social care | 2020 |
| Zamtech Engineering Limited | Professional & scientific | 2013 |
| Zamzam (Saku) Ltd | Professional & scientific | 2013 |
| Zamzam Unlimited Possibilities CIC | Education | 2023 |
| ZAN (Leicester) Ltd | Wholesale & retail | 2025 |
| Zana Auto Service Ltd | Wholesale & retail | 2024 |
| Zanad Ventures Limited | Wholesale & retail | 2025 |
| Zander Events Ltd | Hospitality | 2013 |
| Zandure Ltd | Wholesale & retail | 2026 |