Prime Minister Boris Johnson has called on France to agree to “take back” people who cross the Channel to the UK.
The PM said he had written to French President Emmanuel Macron setting out five steps to “move further and faster” to avoid a repeat of Wednesday’s tragedy where 27 people died.
UK government officials are due to attend talks in Calais later.
However, France has cancelled a meeting between Home Secretary Priti Patel and her French counterpart.
She had been due to hold talks with French interior minister Gérald Darmanin in Calais on Sunday.
In a statement, the French interior ministry said: “We consider Boris Johnson’s public letter unacceptable and in opposition with discussions between counterparts.
“As a consequence, Priti Patel is not invited any more to the meeting on Sunday which will still take place between France, Belgium, The Netherlands, Germany and the EU commission.”
