Julie Townsend, the head of road safety charity Brake, said she supports the targeting of younger drivers in their early 20s and morning-after drivers.
She said that many people do not realise the risks of driving after even one small drink.
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Boris Johnson backed his top aide but there has been criticism from Tory MPs, opposition parties, scientists and even bishops.
The hospital says the action is temporary, and is solely in place to protect staff and patients following a high number of cases recorded.
Domestic Air travel resumed across India on Monday, two months after the coronavirus lockdown announcement by the country's prime minister.