“If Labour were serious, they would not have scrapped the returns deterrent the National Crime Agency said we needed – instead, they’ve surrendered our immigration system. Pathetic.”

A percentage of asylum seekers will be returned to France on landing in Britain, it is understood. Reports suggested the same number of applicants at the asylum processing centre in Paris will be accepted.

More than 16,545 people have crossed in small boats so far in 2025, according to Home Office figures – a 45% increase on the same period in 2024.

Migrants have continued to arrive in small boats despite the French appearing to take a tougher stance on their beaches.

Sir Keir warned last week that the situation was “deteriorating” and threatened a visa crackdown.

The Prime Minister signalled that countries that did not do enough to tackle the irregular migration crisis, for example by taking back failed asylum seekers, could face repercussions in the number of visas issued to their citizens.

Sir Keir’s message came as French police were seen to employ more robust tactics on the beaches this week, including using tear gas.

But they were also seen to stand by and watch once migrants had entered the water to board a dinghy in the hope of crossing the English Channel.

The Home Office has been contacted for comment.