The UK recorded 20 deaths of people with confirmed cases of COVID-19 today, according to government figures.
There were 3,991 new daily confirmed cases of coronavirus, compared with 3,105 yesterday, the figures show.
That is the highest daily figure for new cases since 8 May, when there were 4,649 reported, according to Reuters.
There have been 41,684 deaths in total according to the official numbers.
Separate figures published the the UK’s statistics agencies show there have now been 57,500 deaths registered in the UK where COVID-19 was mentioned on the death certificate.
The figures also show that 901 patients are currently in hospital being treated for COVID-19, with 115 in ventilator beds.
Cases on 9 September stood at 2,659 – meaning an extra 1,300 people have tested positive, compared to the same day on the previous week.
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Daily cases have been climbing since 6 July, when only 352 cases were recorded – the lowest since 16 March.
The UK’s trajectory of cases appears to be in line with France and Spain, according to Sky’s Ed Conway, which are also seeing a gradual resurgence of the virus.
It comes after Boris Johnson told MPs that groups of pupils should only be sent home from school if there has been a positive test in their bubble.
Speaking at the Liaison Committee, he said: “In schools, it’s very important that parents and teachers should look at the guidance about when you should get a test.”
COVID data scrutinised from start of lockdown
On Wednesday, local lockdown measures were imposed in the Welsh county of Rhondda Cynon Taf after a spike in the number of cases of the virus.
The new restrictions – which include not allowing people to enter or leave the area “without a reasonable excuse” – will come into effect at 6pm on Thursday, Welsh health minister Vaughan Gething confirmed.