So how long will Tier 3 restrictions last for? The new three-tier system announced by the Prime Minister last Monday sees the country split into either Tier 1, coronavirus alert level 'Medium', Tier 2 - 'High', and Tier 3 - 'Very High'.Boris Johnson said that restrictions in medium and high alert areas will be kept under 'constant review,' and could change at any time."We will also keep these measures under constant review, including a four-week sunset clause for interventions in very high areas," he said.Previously, Conservative MP Sir Graham Brady sought reassurances that areas will not be left in a "permanent state" with restrictions in place.The MP for Altrincham and Sale West said: "The Prime Minister has said there will be a.
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