Published on Nov 24, 2021
It is the worst known loss of life from the small boats coming across the Channel carrying people who mainly arrive to claim asylum.
The French authorities are saying it could be 31 dead.
With winter closing in, the numbers trying to cross have risen, with temperatures and conditions dangerous.
Boris Johnson said he was "shocked, appalled and deeply saddened".
UPDATE: It was earlier reported 31 people had died, but the total was revised by French authorities to 27 overnight into Thursday.
Warning: This report contains distressing images.