The government's chief scientific adviser Sir Patrick Vallance and chief medical adviser, Professor Chris Whitty lead a coronavirus briefing at Downing Street as Prime Minister Boris Johnson considers whether to introduce further measures in England. Sir Patrick warned that the UK could see 50,000 new coronavirus cases a day by mid-October without further action. Professor of medicine at the University of East Anglia, Paul Hunter, joined 5 Live’s Emma Barnett for analysis of the briefing.