Millions more Britons will soon be living under tighter coronavirus restrictions, but Sadiq Khan and Sir Keir Starmer are among the Labour MPs calling for even harsher measures. They want to see a two-week national ’circuit breaker’ lockdown, but would this diminish the problem, or simply delay it? The Telegraph’s Global Health Security Correspondent Sarah Newey tells Theodora Louloudis my the move isn't a silver bullet. Read Sarah's report from Manaus: www.bit.ly/3diYUe9 | Read more about Wales' crackdown on English visitors: https://bit.ly/3nT22lN | Read more about Germany's rise in cases: https://bit.ly/3nUEqNx | For 30 days' free access to The Telegraph: www.telegraph.co.uk/audio | Email: [email protected] |