LONDON — The British government says people flying into the U.K. will have to self-isolate for 14 days and could be fined 1,000 pounds ($1,220) if they fail to comply.

Home Secretary Priti Patel will announce details of the quarantine plan on Friday. The government has already said it is likely to start in early June and will apply to arrivals from everywhere except Ireland, which has a longstanding free-movement agreement with the U.K.

There are likely to be exemptions for some travelers, including truckers and medics.

Britain did not close its borders during the worst of the coronavirus outbreak and is introducing its quarantine just as many other European countries are starting to open up again. Airlines have warned that the British move could hobble their efforts to recover from the devastation wreaked by pandemic-related travel restrictions.

There has also been confusion about the U.K. policy, after the government initially said it would not apply to people arriving from France. That prompted a rebuke from the European Union, which wants a coordinated policy across the 27-nation bloc.

Britain later said France would not be exempt.