The Immigration Minister Damian Green has blamed the rain for the length of queues at Heathrow airport, saying: "This was caused mainly by the severe weather leading to flight diversions and changing flight schedules and the bunching of arrivals."
The lengthy queues have been criticised by the shadow immigration minister Chris Bryant, London Mayor Boris Johnson and airlines.
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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.