The UK is closing all its travel corridors as fears grow about new variants of the coronavirus.
Anyone arriving in the UK will have to present a negative test and will still have to self-isolate for up to 10 days.
It came as Boris Johnson urged people to stay at home – with hospitals across the UK under extraordinary pressure.
A record 37,000 people are being treated in hospital for coronavirus with the peak not expected for another 10 days in most areas.
A quarter of patients are under the age of 55. Hospitals in Nottingham and Newcastle among others are preparing to accept intensive care patients from London, to try to ease the pressure on the worst-hit areas.
Sophie Raworth presents BBC News at Ten reporting by health editor Hugh Pym, transport correspondent Caroline Davies and deputy political editor Vicki Young.
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