In a statement, the company said the four were members of crew from a car transporter ship called the Tombarra, which was in dock.

BBC: Four fall from ship at Royal Portbury Dock

Two people were injured in the crash, which happened just before 15:00 GMT - the driver of the car transporter suffered serious but not life-threatening injuries, and another motorist suffered minor injuries.

BBC: A2 closed near Gravesend after car transporter crash