Prime Minister David Cameron has pledged to give France another £17m to deal with the migrant crisis in Calais.
In a joint press conference with French President Francois Hollande today, Cameron said that the money would be used to help move people from the refugee camps in Calais to other migrant facilities in France.
"If they come to Calais, that is not a waiting room for getting into the UK," Cameron said.
Cameron's pledge came hours after French economy minister Emmanuel Macron warned that if the UK votes to leave the EU, border controls at Calais could be dropped, allowing migrants to flood into Britain.
"The day this relationship unravels, migrants will no longer be in Calais and the financial passport would work less well," Macron told the Financial Times.
When asked if he agreed with Macron at today's press conference, Hollande said, "France does not intend to put any pressure on the British people to dictate their choices."
But the French President added that there could be "consequences" of a so-called Brexit, telling reporters: "I am unable to deny the consequences for the UK if it leaves the EU, from the Single Market to other matters."