One in 10 cops should not have got through the vetting stage, a police inspector has said.
Inspector of Constabulary Matt Parr said this is a "problem that is widespread" and "historic".
It comes after Metropolitan Police officer David Carrick pleaded guilty to 49 offences between 2003 and 2020 - including 24 counts of rape on eight women, false imprisonment, controlling and coercive behaviour and sexual assault.