The UK has recorded another 52,009 new COVID cases and 115 virus-related deaths, the latest daily figures show.
The number of new infections marks the first time that figure has been above 50,000 since 17 July.
A total of 327,537 cases have been recorded in the past week - an increase of 17.9%.
The figures show there were another 49,080 first doses of a COVID vaccine administered in the latest 24-hour period - meaning a total of 49,554,407 people have had at least one jab.
A total of 45,460,122 people are fully vaccinated, an increase of 26,365 on the previous day.
The UK total for deaths within 28 days of a positive COVID test now stands at 139,146.
Separate figures published by the Office for National Statistics show there have now been 162,620 deaths registered in the UK where COVID-19 was mentioned on the death certificate.
The latest figures come after the UK recorded 49,139 new COVID-19 cases and 179 deaths within 28 days of a positive test on Wednesday.
And on Tuesday, the UK recorded 223 COVID-related deaths - the highest daily number since early March.
Boris Johnson has admitted the level of COVID cases is "high" and he is "watching the numbers very carefully every day".
However, he has insisted he is "sticking with our plan".
The government has so far resisted calls to move to Plan B of its autumn and winter COVID response for easing pressures on the NHS.
Health Secretary Sajid Javid has even predicted there could be as many as 100,000 COVID cases a day heading into winter.