At least three people have died after a migrant boat capsized in the English Channel in the early hours of Wednesday.Sources confirmed 43 people were rescued, including more than 30 who were pulled from the freezing waters. It is feared the death toll will continue to rise.The inflatable boat is believed to have capsized around five miles off Dungeness shortly after setting off from the coast of northern France.A distress call was received by British agencies just before 3am.Border Force, a Royal Navy patrol vessel, French fishing boats, Kent Police and two coastguard helicopters joined the search and rescue mission.