Singers Annie Lennox and Radiohead frontman Thom Yorke, as well as actor Ewan McGregor, have all shown their support to six activists who have been climbing the Shard in protest of oil drilling in the Arctic.
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" .