Mohammed Ahmed Mohamed was arrested and charged three times since 2011 yet each time the judge gave bail.
MPs say he was playing the system.
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The band returned to the festival - a decade after a disastrous set - as the iconic festival drew to a close on Sunday.
The band dedicated their song Everlast to fan Laura Plane, who died from breast cancer last month.
Resham Khan suffered 'life changing' injuries when she had acid thrown at her through the window of her car.