| Zwanenberg Food Group UK Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| ZW Construction Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| ZW Construction Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Zulufish Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zulufish Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| ZS General Building Limited | | | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Zotefoams PLC | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Zone Central Ltd Greenwich Children's home | | | care quality violation | 2022 | UK-OFSTED | £0 |
| Zoki UK Limited | | | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Zodiac Aerospace Services UK Limited | Safran | aerospace and military contracting | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Zodiac Aerospace Services UK Limited | Safran | aerospace and military contracting | workplace safety or health violation | 2017 | UK-HSE | £0 |
| ZMC Elecon Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| ZMC Elecon Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| ZKB Construction Ltd | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| ZK1 Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| ZK1 Limited | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Zircotec Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Zircotec Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Zircotec Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Zircotec Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Zircotec Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zircotec Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zircotec Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zircotec Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zipi Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zipi Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zimrock Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Zimrock Ltd | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Ziman Trading Limited | | | workplace safety or health violation | 2015 | UK-HSE | £57,999 |
| ZHUJUAN123 | | | product standards | 2022 | UK-OPSS | £0 |
| ZHOUYUCHAO3946 | | | product standards | 2022 | UK-OPSS | £0 |
| ZHOUXIUYIN | | | product standards | 2022 | UK-OPSS | £0 |
| ZHONGSHAN HONGLIN NETWORK TECHNOLOGY CO., LTD t/a XMSJ Hair Styling Store | | | product standards | 2022 | UK-OPSS | £0 |
| ZHENGZHOUPINZHISHANGSHANGMAOYOUXIANGONGSI | | | product standards | 2021 | UK-OPSS | £0 |
| ZHENGZHOU FULAIYING TRADING CO., LTD t/a Feima Toy Store | | | product standards | 2022 | UK-OPSS | £0 |
| ZHEJIANG LUDAN TECHNOLOGY CO., LTD t/a Fidget Toy Factory Store | | | product standards | 2022 | UK-OPSS | £0 |
| ZHAOFENG123 | | | product standards | 2022 | UK-OPSS | £0 |
| ZHANGQIANWEN | | | product standards | 2022 | UK-OPSS | £0 |
| ZF Automotive UK Limited | ZF Friedrichshafen | automotive parts | workplace safety or health violation | 2014 | UK-HSE | £17,989 |
| Zeyy Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zeyy Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zeus Metal Fabrications Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Zeus Metal Fabrications Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Zeus Handling UK Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zeus Handling UK Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zeus Handling UK Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zeus Handling UK Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zeus Handling UK Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zerum Construction Management Limited | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Zepf Technologies UK Limited | Diageo | beverages | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Zepf Technologies UK Limited | Diageo | beverages | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Zentia Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zentia Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zentia Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zentaur Preservation | | | workplace safety or health violation | 2017 | UK-HSE | £0 |
| Zenith Project Developments Ltd | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Zenith Nurseries Limited | | | workplace safety or health violation | 2023 | UK-HSE | £0 |
| Zenith House Construction Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Zenith Construction Limited | | | workplace safety or health violation | 2016 | UK-HSE | £0 |
| Zenel Management Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zenel Management Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zenel Management Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zendrill Ltd | | | workplace safety or health violation | 2022 | UK-HSE | £23,604 |
| Zektek Solutions Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zeki Construction & Interior Design Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| ZC Grab Hire Ltd | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| ZC Grab Hire Ltd | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Zaun Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zaun Limited | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Zapego Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zapego Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zapego Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zapego Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zap! Juice Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zap! Juice Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zap! Juice Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zap! Juice Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zap! Juice Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zanet Constructions Ltd | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Zanet Constructions Ltd | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Zanet Constructions Ltd | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Zamperoni Fratelli s.r.l | | | workplace safety or health violation | 2017 | UK-HSE | £55,250 |
| Zamac Ltd | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zalman Properties Ltd | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zaki Styles Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zafron Foods Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zafron Foods Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zafron Foods Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zafron Foods Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| Zafron Foods Limited | | | workplace safety or health violation | 2021 | UK-HSE | £0 |
| ZAB WASH LTD | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| ZAB WASH LTD | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Za Foam Mattress Supplies Ltd | | | workplace safety or health violation | 2022 | UK-HSE | £0 |
| Z&F Properties Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Z F Lemforder UK Limited | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| Z Autoz Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Z Autoz Limited | | | workplace safety or health violation | 2019 | UK-HSE | £0 |
| Z & L Construction Ltd | | | workplace safety or health violation | 2018 | UK-HSE | £0 |
| YZ Auto Salvage Ltd | | | workplace safety or health violation | 2020 | UK-HSE | £0 |
| Yuvam Ltd | | | workplace safety or health violation | 2019 | UK-HSE | £6,640 |
| Yusen Logistics (UK) Ltd | Yusen Logistics | freight and logistics | workplace safety or health violation | 2013 | UK-HSE | £12,067 |
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