Scotland Yard has launched a formal criminal investigation into the alleged sexual abuse by late BBC presenter Sir Jimmy Savile and others.
The Metropolitan Police said more than 400 lines of inquiry had been “assessed” and over 200 potential victims have been identified.
Cdr Peter Spindler said a “staggering” number of victims had come forward.
Children’s charity NSPCC described Savile as “a well-organised prolific sex offender”.
Scotland Yard said the investigation – dubbed Operation Yewtree – moved from an assessment to a criminal investigation after detectives established there are lines of inquiry involving “living people that require formal investigation”.