The “one-in, one-out” agreement will see some of those who arrive in the UK illegally via the Channel sent straight back for the first time since Brexit, with Britain taking an equivalent number of migrants from France in return.

Emmanuel Macron is demanding that Sir Keir Starmer make Britain less appealing to Channel migrants to secure a “ one in, one out deal ”. The French president believes the UK bears the blame for record numbers of small boats crossing the Channel and has three key demands to reduce its “pull factors”.