By Joe Smith A British Airways flight has been forced to turn around and make an emergency landing an hour into a flight to Prague after fumes reportedly leaked into the cockpit. British Airways flight BA854 was forced to make an emergency landing at Heathrow an hour after taking off from the same airport at 7.25am today. The flight, which had been scheduled to land in Prague, in the Czech Republic, just after 10am, only made it as far as the town of Dover before it was forced to abort the trip and turn back toward London. Fight path data from FlightRadar24 shows the plane began to turn shortl…