Robbers have got away with more than $6m in cash after a raid on a British Airways security vehicle at Heathrow Airport. Police are hunting at least two men who held up a van in a supposedly secure area near Terminal Four, escaping in another vehicle which bore the livery of British Airways. It is understood the money was flown into Heathrow on a jet from Bahrain and bound for New York's JFK Airport. The theft of $6.5m (Ј4.57m) happened in a secure area, beyond customs, at about 0630 GMT and it is possible the robbers had legitimate security passes.