LONDON (Reuters) - Work is continuing on whether to introduce “air bridges” between countries after Britain began a 14-day quarantine on travellers arriving in the country, a spokesman for Prime Minister Boris Johnson said on Tuesday.

“The reports are that there was a very high level of compliance at the border yesterday,” the spokesman said of the quarantine, adding no fines had been issued and there were no reports of anyone refusing to provide their details when asked.

Asked about air bridges being introduced this month, the spokesman added: “Work on future options, which includes air bridges or safe travel corridors, is ongoing.” He offered no firm dates or a list of countries that were being approached.