These Regulations are made in exercise of the powers conferred by the European Union (Withdrawal) Act 2018 (c. 16) (in particular under section 8(a), (b) and (d)) in order to address failures of retained direct EU legislation to operate effectively and other deficiencies arising from the withdrawal of the United Kingdom from the European Union.
Link: The Food (Amendment) (EU Exit) Regulations 2019
Source: Legislation .gov.uk