Sir Keir Starmer questions the PM on Government's test and trace scheme

Labour leader Sir Keir Starmer questioned why Boris Johnson said the test andtrace system has “very little or nothing” to do with the spread or thetransmission of Covid-19, after previously hailing it as a game changer.

SirKeir asked in the Commons: “Both positions cannot be right – which one is itPrime Minister?” Mr Johnson replied: “It is an obvious fact of biology andepidemiology that alas this disease is transmitted by human contact or aerosolcontact.