EXHIBIT 21.1
SUBSIDIARIES OF STERIS PLC
STERIS plc has no parent company. As of March 31, 2017, its direct and indirect subsidiaries(1) were as follows:
| Albert Browne Limited | England & Wales |
| American Sterilizer Company | Pennsylvania |
| Bioster Mottahedoon Egypt SAE | Egypt |
| Bizworth Gammarad Sdn Bhd | Malaysia |
| Black Diamond Video, Inc. | California |
| CLBV Limited | England & Wales |
| Controlled Environment Certification Services, Inc. | Ohio |
| Eschmann Holdings Limited | England & Wales |
| Eschmann Holdings Pte Limited | Singapore |
| Gammaster Sweden AB | Sweden |
| Hausted, Inc. | Delaware |
| HSTD LLC | Delaware |
| HTD Holding Corp. | Delaware |
| IDtek Identifikationslösungen GmbH | Germany |
| IDtek Track-and-Trace SA | Switzerland |
| Integrated Medical Systems International, Inc. | Delaware |
| Isomedix Corporation | Ontario, Canada |
| Isomedix Inc. | Delaware |
| Isomedix Operations Inc. | Delaware |
| Isotron Limited | England and Wales |
| Medisafe America, L.L.C. | Florida |
| Medisafe Holdings Limited | England and Wales |
| Medisafe UK Limited | England and Wales |
| PeriOptimum, Inc. | Delaware |
| Phoenix Surgical Holdings Limited | England and Wales |
| Phoenix Surgical Instruments Limited | England and Wales |
| Phoenix Optics Limited | England and Wales |
| ReNOVA Surgical Limited | England and Wales |
| Sercon Indústria E Comércio De Aparelhos Médicos E Hospitalares Ltda. | Brazil |
| Shiloh Limited | England and Wales |
| Solar New US Holding Co, LLC | Delaware |
| Solar New US Parent Co, LLC | Delaware |
| Solar US Acquisition Co, LLC | Delaware |
| Sterile Supplies Limited | England and Wales |
| Sterilgamma Services Sdn Bhd | Malaysia |
| SterilTek Holdings, Inc. | Delaware |
| SterilTek, Inc. | Nevada |
| STERIS AB | Sweden |
| STERIS Asia Pacific, Inc. | Delaware |
| STERIS AST CZ s.r.o. | Czech Republic |
| STERIS AST d.o.o. | Slovenia |
| STERIS AST SK s.r.o. | Slovakia |
| STERIS Barrier Products Solutions, Inc. | Pennsylvania |
| STERIS Brasil Servicos Administrativos Ltda. | Brazil |
| STERIS Brazil Holdings, LLC | Delaware |
| STERIS (BVI) I Limited | British Virgin Islands |
| STERIS Canada Corporation | Quebec, Canada |
| STERIS Canada Inc. | Ontario, Canada |
| STERIS CH Limited | England & Wales |
| STERIS China Holdings Limited | Hong Kong |
| STERIS Corporation | Ohio |
| STERIS Corporation de Costa Rica, S.A. | Costa Rica |
| STERIS Deutschland GmbH | Germany |
| STERIS Enterprises LLC | Russia |
| STERIS Europe, Inc. | Delaware |
| STERIS FinCo S.à r.l. | Luxembourg |
| STERIS FinCo II S.à r.l. | Luxembourg |
| STERIS GmbH | Switzerland |
| STERIS Holdings B.V. | Netherlands |
| STERIS Iberia, S.A. | Spain |
| STERIS IMS Canada Inc. | Canada |
| STERIS Inc. | Delaware |
| STERIS (India) Private Limited | India |
| STERIS Irish FinCo Unlimited Company | Republic of Ireland |
| STERIS Irish FinCo II Unlimited Company | Republic of Ireland |
| STERIS Isomedix Puerto Rico, Inc. | Puerto Rico |
| STERIS Japan Inc. | Japan |
| STERIS Laboratories, Inc. | Minnesota |
| STERIS Latin America, Inc. | Delaware |
| STERIS Luxembourg Finance S.à r.l. | Luxembourg |
| STERIS Luxembourg Holding S.à r.l. | Luxembourg |
| STERIS Mauritius Limited | Republic of Mauritius |
| STERIS Mexico, S. de R.L. de C.V. | Mexico |
| STERIS NV | Belgium |
| STERIS Personnel Services Mexico, S. de R.L. de C.V. | Mexico |
| STERIS Personnel Services, Inc. | Delaware |
| STERIS S.r.l. | Italy |
| STERIS sas | France |
| STERIS SEA Sdn. Bhd. | Malaysia |
| STERIS (Shanghai) Trading Co., Ltd. | China |
| STERIS Singapore Pte Ltd | Singapore |
| STERIS Solutions Limited | England & Wales |
| STERIS S.p.A. | Italy |
| STERIS UK Holding Limited | England & Wales |
| STERIS–Austar Pharmaceutical Systems Hong Kong Limited | Hong Kong |
| STERIS–Austar Pharmaceutical Systems (Shanghai) Limited | China |
| Strategic Technology Enterprises, Inc. | Delaware |
| Synergy Decontamination (M) Sdn Bhd | Malaysia |
| Synergy Health Allershausen GmbH | Germany |
| Synergy Health Amsterdam B.V. | The Netherlands |
| Synergy Health AST, LLC | Delaware |
| Synergy Health AST Republica Dominicana SA | Panama |
| Synergy Health AST S.r.l. | Costa Rica |
| Synergy Health Däniken AG | Switzerland |
| Synergy Health Ede B.V. | The Netherlands |
| Synergy Health France sas | France |
| Synergy Health Holding B.V. | The Netherlands |
| Synergy Health Holdings Limited | England and Wales |
| Synergy Health (Hong Kong) Limited | Hong Kong |
| Synergy Health International Limited | England and Wales |
| Synergy Health Investments Limited | England and Wales |
| Synergy Health Ireland Limited | Republic of Ireland |
| Synergy Health Limited | England and Wales |
| Synergy Health Logistics B.V. | The Netherlands |
| Synergy Health Marseille sas | France |
| Synergy Health Nederland B.V. | The Netherlands |
| Synergy Health New York, LLC | Delaware |
| Synergy Health North America, Inc. | Florida |
| Synergy Health Outsourcing Solutions, Inc. | Florida |
| Synergy Health Outsourcing Solutions S.A. de C.V. | Mexico |
| Synergy Health Radeberg GmbH | Germany |
| Synergy Health Sterilisation UK Limited | England and Wales |
| Synergy Health (Suzhou) Limited | China |
| Synergy Health (Suzhou) Sterilization Technologies Limited | China |
| Synergy Health Systems Limited | England and Wales |
| Synergy Health (Thailand) Limited | Thailand |
| Synergy Health True North, LLC | New York |
| Synergy Health (UK) Limited | England and Wales |
| Synergy Health US Holdings, Inc. | Delaware |
| Synergy Health US Holdings Limited | England and Wales |
| Synergy Health Utrecht B.V. | The Netherlands |
| Synergy Health Westport Limited | Republic of Ireland |
| Synergy Healthcare Limited | England and Wales |
| Synergy Healthcare (UK) Limited | England and Wales |
| Synergy Sterilisation KL (M) Sdn Bhd | Malaysia |
| Synergy Sterilisation Kulim (M) Sdn Bhd | Malaysia |
| Synergy Sterilisation (M) Sdn Bhd | Malaysia |
| Synergy Sterilisation Rawang (M) Sdn Bhd | Malaysia |
| Synergy Sterilisation South Africa (Pty) Limited | South Africa |
| Trust Sterile Services Limited | Scotland |
| United States Endoscopy Group, Inc. | Ohio |
| Vernon and Co. Limited | England and Wales |
| Vernon Carus (Malta) Limited | Malta |
| Vernon-Carus Limited | England and Wales |
(1) | The names of one or more subsidiaries which, considered in the aggregate as a single subsidiary, would not constitute at the end of fiscal 2017 a “significant subsidiary” within the meaning of Rule 1-02(w) of Regulation S-X have been excluded. |