This Practice Note explains the meaning and purpose of hygiene improvement notices issued under Food Safety and Hygiene (England) Regulations 2013 (FSH(E)R 2013), regulation 6. The Practice Note examines the criteria for issuing a hygiene improvement notice and the guidance provided by the Food Standards Agency (FSA) on when such notices should be used. The note also refers to the Food Law Code of Practice and the Food Law Practice Guidance.