Covid-19: UK travel corridors to close from Monday
All UK travel corridors will be temporarily suspended from 4am on Monday morning.
The threat of unidentified Covid strains from abroad means tougher action is needed, the PM says.
Boris Johnson also explained that anyone arriving in the UK must quarantine for 10 days or they have the choice of doing an extra test on day five to shorten the isolation.
Read more: UK to close all travel corridors from Monday