People arriving in England from Turkey and Poland will now have to self-isolate for 14 days from the early hours of Saturday morning.
Transport secretary Grant Shapps said that those coming back from the countries, as well Bonaire, St Eustatius and Saba, would have to quarantine.
He warned that the government was increasing the fines for those people who did not obey the restrictions.
The maximum fine for repeat offenders has been set at £10,000, he said.
As a result of the new additions, almost all of mainland Europe has been added to the government’s “red list”.