Prime Minister Boris Johnson will spell out his three-tier strategy today with areas in England labelled as medium, high or very high risk, which will inform the "appropriate interventions" needed in each area.
Mr Johnson, who held a telephone conference with Cabinet colleagues on Sunday, will chair a COBR emergency committee meeting on Monday "to determine the final interventions" which he will then announce to Parliament.
MPs will be asked to debate and vote on the measures later this week.
The Prime Minister will hold a press conference in Downing Street with Chancellor Rishi Sunak and chief medical officer Professor Chris Whitty later on Monday.
What time is Boris Johnson making his announcement today?
There's no official confirmation of when Mr Johnson will speak however, it is expected he will speak to COBR around 8am.
He is expected to give a statement to the Commons at 3.30pm and hold a press conference with Rishi Sunak and Professor Chris Whitty at 6pm.
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What will Boris Johnson say?
The PM is expected to announce that different parts of the country will be split up into "medium", "high" or "very high" local coronavirus alert areas under the new system.
The three tiers represent an advancing scale of local restrictions.
In Merseyside, the region's leaders confirmed in a joint statement this morning that pubs, bars, gyms, betting shops, casinos, and adult gaming centres will close.
A Downing Street spokesperson said: "Our primary focus has always been to protect lives and livelihoods while controlling the spread of the virus and these measures will help achieve that aim.
"We must do everything we can to protect the NHS and make sure it can continue to deliver the essential services that so many people rely on.
"This is a critical juncture and it is absolutely vital that everyone follows the clear guidance we have set out to help contain the virus".
