An entire county is likely to be moved into Tier 3 restrictions by the end of this week.
The whole of Nottinghamshire is set to be put into the third tier - the very high risk category - the PA news agency understands.
Talks between the Government and local leaders in the northern parts of the county have concluded, but negotiations are ongoing as to what the exact measures needed will be.
It is understood the restrictions are now likely to come into force on Friday, reports PA.
The Gov.uk website says Tier 3 is for areas with a very high level of infections and where tighter restrictions are in place.
"The restrictions placed on areas with a very high level of infections can vary," says the Government's website.
"They are based on discussions between central and local government on the measures required to reduce the spread. You should therefore check the specific rules in your area."
Nottingham City, Broxtowe, Gedling and Rushcliffe council areas will go into Tier 3 at midnight tonight.
It comes after Staffordshire County Council said it could move into Tier Two as soon as this weekend.
Under the “high” coronavirus alert level, people in the affected areas will not be able to mix socially with friends and family indoors in any setting, unless they live with them or have formed a support bubble.
