Four people have died after a migrant boat got into difficulties crossing the English Channel on a freezing night.
A fishing crew spotted the dinghy sinking in ice-cold waters between Kent and France just after 03:00 GMT.
The skipper pulled his boat alongside and his crew hauled 31 people to safety in a dramatic rescue operation, the BBC has been told.
Footage filmed from the boat showed some dressed only in T-shirts and thin lifejackets screaming for help.
The video, shared by the owner of the fishing trawler, Ben Squire – showed crew members pulling people up out of the water and the boat with ropes.
People can be heard panicking and shouting as water appears to fill the inflatable boat.
In the night sky, helicopter lights shine down and airlift people away, as lifeboats arrive at the scene to continue rescuing people.
A government spokesman said authorities were alerted at 03:05 GMT to a small boat in difficulty off the coast of Dungeness, 30 miles west of Dover.
Mr Squire, who was not on the boat for the rescue, said the skipper Ray Strachan told him they saved 31 people.
After hauling them to safety, the crew gave them hot showers, their own clothes and fed them to help warm them up.
Mr Squire said the sea was quite cold and the conditions were a little bit rough.
It was a horrific incident, he said, but the crew did a cracking job.
The BBC’s Nick Eardley said a person close to the situation said 43 people had been saved, with more than 30 rescued from the water.
“These are the days that we dread,” Home Secretary Suella Braverman said.
Prime Minister Rishi Sunak earlier expressed his sorrow at the “tragic loss of human life”.
The boat is likely to have been carrying migrants risking the crossing from France, a day after Mr Sunak announced new measures to “stop the boats”.
In a statement to the House of Commons, Ms Braverman said the search and rescue operation was ongoing, and she has spoken to Border Force officials about the tragedy.
The UK coastguard, the French Navy, the RNLI and an air ambulance were all sent to help with the rescue operation.
A fishing boat in the area and coastguard helicopters from Lydd and Lee on Solent were also involved.
South East Coast Ambulance Service said it was called following reports of the incident, and sent crews to Dover, in Kent, to help with the follow-up operation.
