Just seen this on Facebook. Not sure if it's true or not. It was posted by a travel agents
URGENT ADVISE TO ANYONE VISITING TURKEY!!!!
PLEASE NOTE. To anyone travelling to Turkey. you will now need to show a paper copy of your VISA at UK airports. If you don't have this you are not allowed to board the plane. There's been loads of people turned away and missed out on their holiday. The tour operators don't always inform you of this when you book. Please allow extra time at the airport