Johnson: "I have listened to the roar and howl of the planes passing over where I live." @londontonight
Johnson: Of all the victims of aircraft noise in Europe, one third live around Heathrow. @londontonight
More top news
Hundreds of pupils from Alperton Community School in Brent, London,cheered and waved flags as Andria Zafirakou arrived holding the prize.
Earlier, this week Kensington and Chelsea Council admitted spending almost £21 million keeping survivors in hotels.
Defence Minister Tobias Ellwood sais the UK is going through a "dark chapter" .