t least six people have died after a boat carrying migrants capsized in the Channel, French authorities have said.
A rescue operation, involving seven ships – two of which are British – and a helicopter has rescued 51 people, officials said.
The incident took place near Cap Gris Nez in northern France and the Royal National Lifeboat Institution (RNLI) said a volunteer vessel was launched just before 4am from Dover to “an incident in the Channel”.
It is understood Home Secretary Suella Braverman will chair a meeting with Border Force officials later.
A UK Government spokesperson said: “We are aware of an incident in the Channel. HM Coastguard are working on a co-ordinated response and further information will be provided in due course.”
The Royal National Lifeboat Institution said a Dover-based volunteer lifeboat crew launched just before 4am to respond to the incident.
An investigation has also been opened by the Boulogne prosecutor’s office.
It comes after 755 people crossed the English Channel in small boats on Thursday, the highest daily number so far this year, confirming the total since 2018 has passed 100,000.
Since current records began on January 1 2018, 100,715 migrants have arrived in the UK after making the journey, according to analysis of Government data by the PA news agency.
Thursday’s figures were recorded as another major search and rescue operation was launched after 17 migrants went overboard and were pulled from the water.
The Home Office said they were all taken ashore for medical checks.
Shadow immigration minister Stephen Kinnock said the latest incident was an “appalling, deeply shocking tragedy”.
“We must stop these crossings and defeat the criminal people smugglers.
“There can be no more headline-chasing gimmicks or madcap schemes that just make everything worse,” he wrote on Twitter.
Enver Solomon, CEO of the Refugee Council, said the incident “underscores the need for meaningful action” to reduce dangerous crossings, and urged the Government to focus on creating an “orderly and humane asylum system”.
“We are deeply saddened by the tragic loss of life in today’s sinking of a boat in the English Channel. Our hearts go out to the victims, survivors, and their loved ones. We also thank the rescuers who helped save many lives under harrowing circumstances,” he said.
He accused the Government of “focusing on passing expensive and unworkable legislation and shutting down existing safe ways to get to the UK”, adding: “There are constructive alternatives we have set out that would create an orderly and humane asylum system.”