Two boats, each carrying between eight and ten migrants, were picked up by Border Force in Dover.
This adds to a record 336 migrants who arrived in Britain last month.
The vessels were seen behind a Border Force boat in Dover Marina, Kent.
The group of up to 20 migrants are believed to have made the dangerous trip across the Channel.
Two boats each carrying between eight and ten migrants was picked up by Border Force off the coast of Kent today

Pictures show a rescued man huddling under a blanket as he is escorted along the marina. This adds to a record 336 migrants who arrived in Britain last month

The vessel can be seen behind a Border Force boat. Hundreds more migrants could make the life-risking trip to the UK in the coming weeks after two migrant camps in France were cleared – including one near Dunkirk holding 1,100
On Thursday, Border Force intercepted another boat carrying around eight migrants, including a child.
Hundreds more migrants could make the life-risking trip to the UK in the coming weeks after two migrant camps in France were cleared – including one near Dunkirk holding 1,100.
Last week 400 migrants were cleared from a camp in Calais, just 200 metres from the notorious ‘Jungle Camp’ which had 6,000-odd people living there until it was shut down in 2016.
Charity workers said the clearance could see migrants fall into the clutches of people smugglers, who charge them thousands to cross the Channel.
On Sunday, 41 made it over the Channel, including two men on a kayak and another 24 – including minors – on one boat.
Last month, a record 336 migrants got into Britain, and two people died trying to get over.

The migrants are taken to a shipping container to be processed by officials. Last week 400 migrants were cleared from a camp in Calais, just 200 metres from the notorious ‘Jungle Camp’ which had 6,000-odd people living there until it was shut down in 2016

The rescued migrants were pictured today. More than 1,200 have made it into Britain from France this year, shattering the number that crossed last year

The series of images, taken today, shows a boat after it was intercepted. Last month, a record 336 migrants got into Britain, and two people died trying to get over

Migrants rescued from the boat are escorted by officials. They likely made the trip across the Channel

These latest images adds to a series of interceptions by Border Force. On Sunday, 41 made it over the Channel, including two men on a kayak and another 24 – including minors – on one boat
The body of a 48-year-old Iraqi man was found on Belgian waters wearing diving fins and plastic bottles attached to him as a makeshift life jacket.
While a woman was discovered on Dutch waters after falling overboard.
The majority of the migrants present themselves as either Iranian or Iraqi nationals, and once they are brought on to land they are screened by Border Force officers.
Earlier this week, charities responded with outrage after convicted criminal Paul Golding joined Britain First activists on a ‘patriot migrant patrol’ at a beach near Dover to catch migrants crossing the Channel.
The far-right group said it sent people on the lookout for desperate migrants who risk their lives to get to Britain from France.
They shared pictures of their ‘patriot migrant patrol’ at the beach in Dover, in Kent, on its website, saying: ‘Equipped with torches, binoculars and hi-vis jackets, our activists patrolled the beach keeping a close eye out for migrant crossings.’
Charities have criticised the patrols, with Care4Calais saying it was ‘shocked and concerned’ by the search parties, and that they were ‘unsettling.’

Far-right activists, including convicted criminal Paul Golding (pictured in the suit) patrolled a beach in Dover earlier this week