Britain will grant asylum to one migrant in France who can prove a family connection to the U.K. in exchange for each arriving migrant taken back by France.

The home secretary says the government will resist any attempts to block the deal agreed with France this week.

UK Prime Minister Keir Starmer reached a “one in, one out” migrant returns trial with French President Emmanuel Macron as they attempt to slash the number of people crossing the English Channel on dangerous small boats.