Health Secretary Matt Hancock will lead a Downing Street press conference on Monday afternoon, after the South African variant was discovered in the UK.
The Health secretary is expected to address the nation at 5pm tonight in a televised briefing.
Mr Hancock will be joined by NHS England's Professor Stephen Powis and Public Health England's Dr Susan Hopkins.
It's likely Mr Hancock will be speaking about the emergence of the South African variant in parts of the UK such as in Southport in Merseyside.
Urgent testing for the South Africa variant of the virus is beginning in parts of England, including Southport, after cases were found with no known links to travel or previous cases.
Sefton Council will be setting up dedicated test centres to look for the new variant in specific areas of the borough.
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But health experts have said that there is currently no evidence that the variant, known as VOC-202012/02 causes more severe illness or is more resistant to the coronavirus vaccines currently being rolled out.
The Health Secretary is also likely to speak about the progression of the vaccine rollout, following the news that every older care home resident has now been offered the vaccine.
Yesterday the NHS also vaccinated 600,000 people in a record day for the rollout.
But a fifth of care home staff have refused the vaccine, with Prime Minister Boris Johnson acknowledging it had been "an issue."
He said: "We're working fast to sort it out and we're now seeing a big increase in uptake in care home staff and that's a great thing to see, and I've seen in the last few weeks a big increase in the receptivity of care home staff to the vaccinations."
He added: "One of the distinctions people might make is that, although care home staff are certainly capable of spreading the disease, they're, in principle, less likely to suffer it severely or to die."
