At least eight migrants have died off the coast of France while attempting to cross the English Channel.
The deaths occurred off Ambleteuse in the Pas-de-Calais region of northern France overnight, French officials said.
Some 45 survivors of the disaster were rescued.
A rescue ship was deployed after a boat carrying dozens was seen in distress near a beach in Ambleteuse.
It comes as French authorities rescued some 200 people off the coast of Calais over a 24-hour period between Friday and Saturday night.
A boat carrying migrants that was in poor condition was located off the coast of Le Portel, a French coastal town, and 55 people were rescued.
Elsewhere, 61 people were picked up off the coast of La Becque d’Hardelot, 48 people were recovered near a lighthouse and at the end of the day 36 more were rescued, French authorities said.
All of those rescued were brought back to land.
French authorities said they monitored 18 attempts to launch boats across the Channel on Saturday.
A map showing the locations of migrant rescues
Responding to the disaster, Foreign Secretary David Lammy said: “It’s awful. It’s a further loss of life.”
He told the BBC’s Sunday With Laura Kuenssberg programme he had been to the National Crime Agency and seen the “awful sort of rubber dinghies that people are coming across the Channel with, many of them, of course, not able to make it in these contraptions”.
He added that the government has been “discussing how we go after those gangs, in cooperation upstream with other European partners”.
Steve Valdez-Symonds, Amnesty International UK’s refugee and migrant rights director, said: “This is yet another appalling and avoidable tragedy and our hearts go out to the families and friends of those who’ve died.
“These perilous crossings are seemingly becoming more and more dangerous, suggesting smugglers are taking greater chances with people’s lives as they try to evade detection efforts by the UK and French authorities.”
He added: “The government’s ‘smash the gangs’ slogan and its security-heavy approach is contributing to the death toll because the refusal to establish safe asylum routes means these flimsy vessels controlled by people smugglers are the only real option for desperate people fleeing persecution.”
Mr Valdez-Symonds added: “Until UK ministers and their counterparts in France start sharing responsibility over the need for safe routes, we should expect this weekend’s tragedy to keep repeating itself time and time again.”
It comes less than two weeks after at least 12 people, including 10 women and girls, died after a boat with dozens of migrants tore apart in the English Channel.
The French coastguard said more than 65 people were rescued after the vessel got into difficulties off the coast of Cap Gris-Nez.
France’s interior minister Gerald Darmanin said only eight of the 70 people on board had lifejackets.
It was the deadliest incident so far this year, which had already seen 25 people die attempting to cross the Channel.
More than 30 people have died in Channel crossings so far this year.
More than 21,000 people crossed the English Channel in small boats between January and September this year, government figures show.