coronavirus cases surge across England. Boris Johnson is under pressure to review the Tiers as more towns and cities grapple with the prospect of tougher rules.Swathes of England are already living in Tier Four in a bid to drive the virus down and avoid overwhelming the NHS.One ambulance service has reported that Boxing Day was one of its busiest ever days.And stark new figures show that England has peaked for a second time, with new infections surpassing the previous high point in April.It has sparked fears that a third wave may be approaching as scientists warn Downing Street that tougher restrictions may be needed.There is no evidence yet that an official 'Tier Five' will be introduced, but reports suggest that officials are concerned.