«Restrictions eased once 'top 4 cohorts' protected». BBC News (på engelsk). 18. januar 2021. Besøkt 26. januar 2021. «The government said that the UK could begin to reopen from the beginning of March, once the top 4 risk groups are protected from Covid-19. | But Vaccine Deployment Minister Nadhim Zahawi told the BBC that there were still a "number of caveats" to reopening, and that we don't yet know the impact vaccination has on the transmission of the virus.»
