Covid cases have dipped again as the UK recorded 36,389 infections and 64 deaths on Friday.
Earlier this week, the UK posted the second highest country number of new Covid cases in the world on Wednesday, behind the US.
More than 44,104 daily cases were recorded in the highest Wednesday figure since January 13.
New data revealed the vaccine rollout has continued to be a success with 83,239,491 Covid jabs given in the UK.
As many as 46,476,845 were first doses, a rise of 43,000 on the previous day.
The remaining 36,762,646 were second doses, an increase of 174,742.
Hackney, Tower Hamlets, Islington, Southwark, Lambeth and Hammersmith and Fulham made the Covid watchlist, according to the ZOE Covid Symptom Study.
It comes as a north London hospital urged people to avoid checking into A&E where possible amid the struggle to cope with arrivals.
Dr Angshu Mukherjee, clinical director of the department, made an exceptional appeal to the public in a YouTube video released on July 21.
Dressed in scrubs and speaking through a clinical face mask, Dr Mukherjee said: “Every day we are seeing more and more patients arrive and the demand for our services is growing exponentially.
“We are at a stage now where we are asking the general public in Barnet to consider using other services for their health requirements.
“If you think that you do need to see a clinical, doctor or nurse but your condition is not life threatening please call 111.”
The rise in A&E attendance is not just due to Covid or any other specific area, the Royal Free London NHS Foundation Trust said.