The number of people who had Covid-19 in England has increased by around 75 per cent in seven days, according to the Office for National Statistics (ONS).
Overall infections have spiked with an estimated 85,600 people in England with the virus in the week to May 29, up from 48,500 people in the week ending May 22. The case numbers are the highest they have been since the week to April 16.
However, figures are still lower than they were earlier this year, with the ONS estimating 1,122,000 people had Covid-19 in the week to January 2.
It is believed more people are testing positive for Covid-19 in the East Midlands, the North West and the South East.
There are also signs that cases in London are on the rise along with the West Midlands. The trend is uncertain for other regions, the ONS said.
New Covid cases involving the Indian variant are up 79 per cent compared with last week.
The variant is now believed to be dominant in the UK where there are 12,431 confirmed cases, up from 6,959 last week.
Covid-19 Regional Breakdown
In the week to May 29, the North-west of England had the highest percentage of people in England likely to test positive for coronavirus at around one in 280.
South-east England had the lowest estimate at around one in 1,490.
The ONS said the percentage of people testing positive has increased in those aged 35 years and over and in secondary school children in England.
In Wales, there are early signs of a rise in the proportion of people testing positive, with around one in 1,050 people estimated to have had Covid-19 in the same week.
This is up from one in 3,850 in the previous week and is the highest estimate since the week to April 16.
Any possible trend in Northern Ireland is uncertain with an estimated one in 800 for the week, broadly unchanged from one in 820 in the previous week.
Things are not yet certain for Scotland either, where the latest estimate is around one in 680, broadly unchanged from one in 630.
All figures are for people in private households.