The Immigration Minister Damian Green admitted today that there is a "problem" with delays at passport control at Heathrow, and pledged to take action to tackle the problem.
He said he accepted that some passengers had been forced to stand in line for up to 90 minutes in breach of Border Force targets and pledged action to tackle the problem.
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It comes as Liam Fox warned failing to deliver on the 2016 vote to leave the EU could result in a ‘political tsunami’.
Ayoub Majdouline, 18, was arrested in Wembley, north west London, on Saturday morning, Scotland Yard said.
There are no reports of any injuries at this stage.