Officers were on the hard shoulder of the M5 when they saw the caravan . Were forced to dive out of the way when they saw its back window open . The driver was arrested and taken into custody at a police station in London, where he is being questioned by officers from Operation Trident.
Officers were on the hard shoulder of the M5 when they saw the caravan . Were forced to dive out of the way when they saw its back window open . Jumped to safety with seconds to spare before being decapitated .