More than 100 people were killed as bomb blasts caused devastation in the Pakistani cities of Quetta and Mingora on Thursday.
ITV News Correspondent John Irvine reports:
More top news
The band announced at a free concert on Friday that they would take over the event's Pyramid stage on Saturday June 25.
The victims were collecting permits and escorts a day after their home town was liberated from the extremists.
Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.