Turkey and Poland have been added to England’s quarantine list, meaning travellers from the countries will have to self-isolate for two weeks.
People arriving from those destinations after 4am on Saturday will be required to quarantine, Transport Secretary Grant Shapps has announced.
The Caribbean islands of Bonaire, St Eustatius and Saba have also been added to the list.
The transport secretary also revealed that the penalties for people who refuse to self-isolate will be increased to a maximum of £10,000 for repeat offenders.
The quarantine system is meant to stop people from high-risk countries spreading coronavirus in the UK.
Countries with infection rates of 20 per 100,000 people are at particular risk of being added to the list.
Poland’s two-week rate as of Wednesday was 36 and has been increasing, with the percentage of positive tests at 3.7%.
Last week, Denmark, Slovakia and Iceland were added to England and Wales’ quarantine lists.
From this week, isolating became a legal duty for anyone told to do so. Fines start at £1,000 and can be hiked to £10,000 for repeat offenders.
As efforts continue to control imported cases, latest test and trace data for England showed a 61% increase in the numbers testing positive, as well as an increase in the overall proportion of positive tests to more than 5%.
More than 16 million people are also now living under enhanced local restrictions.
The latest will affect people in the Liverpool city region, Warrington, Hartlepool and Middlesbrough from 12:01am on Saturday.
It bans them from meeting people from other households indoors, including in pubs and restaurants.