Will Rishi Sunak's gamble pay off?

Rishi Sunak on Wednesday called a general election but polls have consistently made grim reading for the UK prime minister, predicting a wipeout for his ruling Conservatives. The latest YouGov/Times voting intention poll has the Conservatives on 20 percent and Labour on 47 percent, while an average of major polls collated by The Economist gives Labour a 23 point lead. Benedicte Paviot reports from London.