The number of migrants arriving in the UK by boat has already hit 10,500, more than the entire tally registered in 2020.

Hundreds of migrants who entered Britain by crossing the English Channel on small boats remain missing after they absconded from their hotels, the Daily Mail has quoted unnamed sources as saying.

The sources added that government ministers had held urgent discussions between departments over "the tracking" systems responsible for monitoring asylum seekers' movements after most of them arrive in the UK from France by boat.

The total number of boat migrants entering Britain has already passed 10,500 this year, 2,000 more than the 8,417 refugees who arrived in the whole of 2020.