Prime minister also reveals test and trace strategy as he is questioned by MPs; Tory MPs still calling for Cummings to go amid fears over public health impact
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Clark suggests Sage could review the two metre rule before shops and other non-essential places begin to reopen.
Johnson says he has already done this.
Clark asks why the UK’s social distancing policy is two metres, when the WHO recommends one metre.
Johnson says the advice from Sage remains at the moment there is a considerable reduction in risk from two metres.