Boris Johnson calls for joint patrols with France after 27 die crossing the Channel

A man wheels a gurney into a warehouse in the Port of Calais, France, where it is believed the bodies of migrants are being transported after recovery from a boat which capsized off the French coast with the loss of 31 lives (Stefan Rousseau/PA)

Boris Johnson has called on France to agree to joint police patrols along the French Channel coast after a migrant boat capsized causing the loss of dozens of lives.

The French regional maritime authority said 27 people had died. French officials had previously stated there were 31 deaths but the death toll was revised down, with no immediate explanation for the discrepancy.