New rules for international arrivals are being introduced in a bid to slow the spread of new coronavirus strains.
Here we answer the key questions about the new measures.
Arriving travellers put in quarantine hotels will be charged £1,750 for their stay, Health Secretary Matt Hancock has announced.
Passengers arriving into England face fines of up to £10,000 for failing to quarantine, and those who lie on their passenger locator forms face up to 10 years in jail.
