The strip-search of a black girl by police at school in east London was not an isolated case, England's children's commissioner has said.
Dame Rachel de Souza requested Met Police data after details of the "Child Q" incident became public in March.
Of the 650 strip-searches carried out between 2018-2020, almost a quarter were done without an appropriate adult present, figures show. More than half of those searched were black boys.
The Met said it has since made changes.
