Tim Harford asks:
When will the UK have vaccinated 80% or more of its 18 and over population with a full course of a COVID-19 vaccine?
The outcome will be determined using data from the UK government (Coronavirus.data.gov.uk). See "Vaccination uptake, by report date," and select "UK Total." If the UK government changes how it reports vaccination data (e.g., including the administration of single-dose vaccines), we will provide clarifying language as necessary (BBC). As of 2 June 2021, full course uptake in the UK was 50.7%.