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MPs have heard fresh warnings about the potential of the UK's exit from the EU to cause gridlock at ports and railway stations.

Trade union representatives told the Home Affairs Committee that - depending on the outcome of Brexit negotiations - people could face long waits and Kent could become a "carpark", as Simon Jones reports.

You can hear more from Today in Parliament on 大象传媒 Radio 4 weeknights at 23:30 - or find previous episodes of the programme via the 大象传媒 iPlayer.