A United Airlines plane was forced to make an emergency landing at Heathrow Airport following reports of smoke in the cabin.
Emergency services rushed to the United Airlines flight UA949 where police and fire crews stopped the plane on the taxiway.
The plane took off at 12.23pm from Heathrow and had been due to fly to San Francisco.
It was reported that the plane stopped climbing at around 15,000 feet after leaving the airport.
The Boeing 777-200 aircraft was over Milton Keynes when it made a U-turn to return to Heathrow, where it was escorted to the gate by three fire engines.
