Boris Johnson is stepping up his ambitions for mass testing, revealing plans for whole cities to be tested to root out asymptomatic carriers.

So how realistic are the plans? Afzal Khan, Labour MP for Manchester Gorton, tells Bloomberg Westminster's Sebastian Salek and Caroline Hepker why he's not optimistic.

Plus, with Americans heading to the polls today, Bloomberg Opinion columnist Therese Raphael joins to talk about what a Biden victory would mean for Britain.

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