More than one million people are thought to have had the disease in the last week, according to data.
The number of people in England who had Covid increased from one in 65 the week before to one in 50 the week after.
In the last week, there have been increases in all parts of England, with the highest levels in the north-eastern part of the country. Children aged two years to school year 6 and adults aged 35 and over have seen an increase in the number of infections.
There has been an increase in the number of infections in Northern Ireland in the last week.
The deputy director for the Covid-19 Infection Survey said that the levels of infections in England were close to those seen in August.
There has been a marked increase in infections among the over 70s in England this week.
Hospital admission rates in the south-west have increased by 250% since the beginning of the year, according to a report released by the UK Health Security Agency.
The chief medical adviser at the UKHSA urged people to wear face coverings in order to stop the spread of Covid.
There has been an increase in Covid-19 cases and hospitalisation rates this week. Hospitals and care homes are seeing an increase in the number of infections.
If you have symptoms of a respiratory infection or feel unwell, make sure you have any Covid-19 vaccinations you are eligible for.
It is important to avoid contact with elderly people if you are unwell because they are more likely to have severe disease.
A face covering will help stop the spread of respiratory infections.