This document discusses substance misuse problems among children in local authority care in the UK. It finds that between 2011-2013, the proportion of looked after children identified with substance misuse problems was between 1-4.5% for boys and 1-3% for girls. In 2013, 950 looked after children received an intervention for substance misuse, most between the ages of 13-17. Data from Public Health England shows similar numbers of looked after children receiving treatment in 2012/13.