The raid took place at about 10am, when a white transit van bearing false number plates rammed through the steel security shutters of the Swissport Cargo warehouse in Staines, on the perimeter of Heathrow Airport. Inside the warehouse, eight masked men burst out of the doors brandishing handguns, knives and cudgels. Terrified staff were held at gunpoint and threatened with knives as the robbers began moving boxes of precious metals, including gold.