The UK and France have urged other EU nations to help address the root causes of the Calais migrants crisis, reports the BBC.
In the Sunday Telegraph, home secretary Theresa May and her French counterpart Bernard Cazeneuve said the situation was 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 in a phone call between prime minister David Cameron and President François 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. He is the ninth person to have been killed trying to access the the tunnel since the start of June.
More than 600 French riot police have already been deployed to Calais to work alongside local police.
Eurotunnel services are again delayed on Sunday, with a wait of 30 minutes, down from an hour, on the terminal on the UK side for passenger services due to what Eurotunnel described as an "earlier incident" in the terminal. There is no delay to passenger services on the French side.