The Metropolitan Police says it is carrying out a major review of group-based sexual abuse cases in London dating back to 2010, with reports citing potential action involving around 4,000 files. The review is described as an audit of historic “grooming gang” allegations and related investigations. Several outlets frame the development as prompted by ongoing concern that some perpetrators may not have been identified or dealt with, raising the possibility that offenders could still be at large. The coverage also links the renewed attention to political criticism of London mayor Sadiq Khan, though the reports differ in emphasis rather than in the core policing claim. Across the articles, the central point is that police chiefs are examining long-running records and are considering reopening or further pursuing cases within that timeframe. The reports do not provide additional confirmed case outcomes, specific names, or details on which investigations are being re-examined beyond the date range and the reported scale of the review.