What does the biggest economic slump in 300 years mean for Britain?

As the chancellor announces plans to extend the unprecedented scheme to pay the wages of millions of workers, whole sectors of the economy remain shut because of Covid-19, causing a recession unseen in Britain for centuries. Larry Elliott explains what it will mean for the country. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>