If the UK leaves the EU on Exit Day without a deal, 36 different sets of existing product safety and metrology legislation will be amended by the Product Safety and Metrology etc. (Amendment etc.) (EU Exit) Regulations 2019. The changes will be limited and will not introduce a new policy regime. This guidance explains them, clarifying what businesses will need to know and what they will need to do differently. It does not cover legislation sponsored by the Health and Safety Executive or the Northern Ireland Office.