You should not leave a Tier 4 area unless for permitted reasons, such as work, education, caring responsibilities, to visit a support bubble or for medical reasons,
Anyone from a Tier 1, 2 or 3 area should not enter a Tier 4 zone except for the same reasons.
Dr Yvonne Doyle, medical director at Public Health England, said: “This sharp and sudden increase is of serious concern.
“Most of the new cases reported today are concentrated in London and the South East, although it is too early to tell if this is linked to the new variant.
