Covid has bounced back in England and Scotland with up to one in 65 people infected according to the latest data.
While analysts said it was too early to tell if the rise would be sustained health chiefs have been warning about a potential spike driven by the new Covid variants Kraken and Orthrus for weeks.
Office for National Statistics (ONS) analysts estimated that just over 1million Brits were infected with the virus on any given day in the week ending 31 January.
This a rise of about 7 per cent on the week before when 950,000 Brits were estimated to be carrying the virus.
Michelle Bowen, ONS head of health surveillance dissemination and strategy, said the data presented a ‘mixed picture’.
‘Today’s data shows a mixed picture across the UK, with infections increasing in England, continuing to decrease in Northern Ireland and uncertain trends in Scotland and Wales,’ she said.
‘It is too early to say if these changes mark an overall change in recent trends in infections we’ve seen.’
The ONS data, based on the random swabbing of more than 100,000 Brits, suggests one in 65 people in England – some 874,700 (1.56 per cent) – were infected with Covid last week.
This is was rise on the 799,200 recorded in the previous week, up to January 24.
Virus levels also rose in Scotland, with 82,300 (one in 65 or 1.56 per cent) people were thought to be carrying the virus, up from 75,900.
But infection levels continued to fall across Wales and Northern Ireland.
Wales recorded an estimated 36,600 infectees (one in 85 people or 1.19 per cent), down from 38,800.
In Northern Ireland 25,500 were thought to be infected (one in 70 people or 1.39 per cnt) down from 27,900.