The government will today set out which tier each local authority in England will be in once the national lockdown ends.
Health Secretary Matt Hancock will make the announcement in Parliament this morning.
The revised three-tier system will come into force in England on December 2.
The tougher system, which sees harsher controls on the hospitality industry than before, will be based on the latest available data, Downing Street said.
More places will be put in the higher tier - Tier 3 - which bans household mixing indoors and means pubs and restaurants can only remain open for takeaways.
The first review of the tier allocations announced today will take place by December 16.
This will allow for areas where the infection rate is decreasing to be moved down a tier before Christmas.
Though areas can also be moved up a tier if the virus is spreading.
Decisions on which areas are in which tiers are made by ministers based on public health recommendations through a 'national command structure'.
The factors that determine the tier will be the case detection rate, how quickly cases are rising or falling, positivity in the general population and pressure on the NHS.
The government will also take into consideration 'local context and exceptional circumstances' such as local but contained outbreaks.
Mr Hancock said: “Thanks to the hard work and sacrifice made by people up and down the country, we are able to move out of national lockdown and into more targeted local, tiered restrictions.
“I know for those of you faced with tier 3 restrictions this will be a particularly difficult time but I want to reassure you that we’ll be supporting your areas with mass community testing and extra funding.
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“By following the rules together we can get out of these tough measures.”
In Tier 3 areas, a six-week rapid community testing programme will be rolled out using the NHS Test and Trace and the Armed Forces.
Rapid tests that can produce a result within an hour will also be used.
Local authorities facing tougher restrictions will also receive extra money from the government to help manage the cost of tackling Covid-19.
Those in Tier 3 will get funding amounting to £4 per head of population per month, and for those in Tier 2 it will amount to £2 per head.
Mayor Andy Burnham yesterday (Wednesday) said it is ‘more likely than not’ that Greater Manchester will be put into the highest tier of restrictions despite falling infection rates.
The mayor is expecting that the new measures will be applied consistently across the city-region.
Greater Manchester had been in Tier 3 before the lockdown after reporting some of the highest Covid-19 rates in the country.
Things have changed in the last week, with the regional rate falling from 432.4 cases per 100,000 people to 276.48 per 100,000.
However with rates still above the national average, Mr Burnham has conceded that the region was heading ‘at some speed towards the Tier 3-Tier 2 borderline’.