The UK is to close all travel corridors from Monday to protect against unidentified Covid strains.
Prime Minister Boris Johnson declared all arrivals to the UK must have proof of a negative test in the previous 72 hours and then immediately go into a 10-day isolation period, until they test negative after five days.
The border controls come almost a year since Britain first went into lockdown.
Criticism was again aimed at Mr Johnson and his government for again acting too slowly.
More than 2 million people have died because of COVID-19 worldwide.
