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Other EU nations have been urged to help address the root causes of the Calais migrant crisis.
Home secretary Theresa May and her French counterpart Bernard Cazeneuve said it was part of a “global migration crisis”.
Migrants in Calais are making nightly bids to cross the Channel, leading to delays on cross-Channel services.
Meanwhile, the Home Office said support could end for failed asylum-seekers, to discourage illegal migration.
Bolstered security measures planned for around the French end of the Channel Tunnel, which include more CCTV surveillance, French police reinforcements and extra fencing, were agreed between prime minister David Cameron and French president Francois Hollande on Friday.
There have been thousands of attempts by migrants to access the Eurotunnel terminal in the last week.
A man believed to be Sudanese was killed on Tuesday night while attempting to make the journey, the ninth person to die while trying to access the tunnel since the start of June.
Eurotunnel Le Shuttle was operating three departures an hour in both directions this morning.