Brazil
With another new variant identified, there are now nine on the UK's watchlist. Here's where things stand.
Public Health England pleads for travellers on flight LX318 from Sao Paulo to Heathrow, via Zurich, to get in touch.
Boris Johnson boasts Britain has "one of the toughest border regimes anywhere in the world." So what do we know about what went wrong?
A simple guide to the new variant of concern – and the hunt for an infected person lost in the system.
Vaccines minister Nadhim Zahawi said the government doesn't know whether the person contracted the virus in the UK or abroad.
Wagner Araujo and his wife Elaine flew into Heathrow from Brazil, one of the 33 countries on Britain's "red list" of high risk destinations. They now have to pay £2,400 as a couple for a 10-day quarantine hotel package.
But Boris Johnson has been accused of acting too slowly to prevent new variant of coronavirus from being imported.
"You can’t tell me any additional measures that you’ve put in place," Yvette Cooper tells the PM.
People involved in the Oxford University trial have stressed there's no cause for concern.
The protest has been organised to draw attention to the impact of Covid-19 on indigenous people in Brazil.