(BBC) The home secretary is expected to hold talks with her French counterpart about the number of migrants crossing the English Channel to the UK.
Priti Patel and Interior Minister Gérald Darmanin are both due to attend a meeting of G7 ministers in London.
She has warned that Britain could withhold £54.2m it had promised to pay France to help deal with the problem, unless more boats are intercepted.
The Home Office said 785 people crossed the channel in small boats on Monday.
More than 12,600 people have made the dangerous journey so far this year.
The rise in the number of migrants making the crossing in recent days comes after several weeks of unsettled weather.