Okay this was on the Beeb earlier: Downing Street have confirmed that the PM will not return early from his holiday in Italy but say he has been in regular touch "using modern communications" and that Mr Clegg and Mrs May were dealing with events.
He can spend time going back to tip a waitress. Perhaps it will take for the rioting to move into nice white middle class areas for him to realise it's his policies coming home to roost.