Retail sale rise, London Tube extension and Nationwide's profits

Ian King speaks to the Mayor of London, Sadiq Khan, about plans to extend the Northern Line Tube service. Plus, hear from PwC's Leader of Industry for Consumer Markets, Lisa Hooker, about figures which suggest retail sales are on the rise. And Nationwide's Chief Executive, Joe Garner, joins the show to discuss how the Covid-19 pandemic helped boost profits.