This Data Insight focuses on the work being carried out by the Built Environments And Child Health in WalEs and AuStralia (BEACHES) team in Swansea University. BEACHES is a joint initiative between Swansea University, the Telethon Kids Institute, and the University of Western Australia, with collaborators from Curtin University, Monash University, Queensland University of Technology, and University of Southern Denmark. It provides a summary of key Welsh legislation and policy areas on the built environment and child health.