Passengers travelling into the UK through Heathrow last month were forced to queue at passport control for almost three hours.
Figures released by airport operator BAA showed that on April 30 there were passport queues of up to three hours at Heathrow's Terminal 4, twice as long as the figure Immigration Minister Damian Green suggested in the House of Commons.
On April 10 passengers in Terminal 5 faced queues of an hour, and on April 17 non-EU passport holders faced queues of two hours and thirty-five minutes.
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