Evaluating the impact of minimum unit alcohol pricing on purchasing behaviour by different social class and age groups in Wales: A controlled interrupted time series study.

Objectives: Alcohol consumption and its associated harms pose a significant challenge to public health in the UK. To address this issue, Wales implemented a Minimum Unit Price policy (MUP) in February 2020, setting a minimum price of 50p per UK unit of alcohol (10 ml/8 g). In this study we evaluate the policy's impact on alcohol sales metrics to gauge its effectiveness in improving public health outcomes.