A scientist advising Britain's Tory government says it may be necessary to close pubs if schools are to open next month.
Prof Graham Medley told the BBC there may need to be a "trade-off", with the re-opening of schools seen as a "priority" for children's wellbeing.
It came after England's chief medical officer said the country was "near the limit" of opening up society.
Boris Johnson told a Downing Street press conference on Friday he needed to "squeeze the brake pedal" on easing restrictions, following a rise in coronavirus cases.
And England's chief medical officer, Prof Chris Whitty, warned the nation had "probably reached near the limit or the limits" of what can be done to reopen society, meaning trade-offs may be needed to allow pupils to return to classrooms next month as planned.
Asked whether restrictions of other activities may be needed to allow schools to reopen as planned, Prof Medley, chairman of the Scientific Advisory Group for Emergencies (Sage) sub-group on pandemic modelling, told BBC Radio 4's Today programme: "I think that's quite possible.
"I think we're in a situation whereby most people think that opening schools is a priority for the health and wellbeing of children and that when we do that we are going to reconnect lots of households.
"It might come down to a question of which do you trade off against each other, and then that's a matter of prioritising. Do we think pubs are more important than schools?"