Heavy snow is continuing to disrupt European air travel on Sunday with London's Heathrow airport remaining closed for arrivals. In southern England, the snow is gradually easing, but blizzards are now sweeping into the north of the country and Scotland, with warnings of up to 20 cm of fresh snow. In Frankfurt around 300 flights were cancelled in the early hours of Sunday morning. Some of the busiest airports in Europe have shut down, leaving many travellers stuck for the night.