Latest figures published on Wednesday by the Office for National Statistics (ONS) estimate that 21% of Londoners from private households have contracted coronavirus by mid-January, equivalent to one in five people. This is compared to England with an estimated 1 in 7 people having contracted the virus in the past with the West Midlands and Yorshire and Humber also showing high antibody positivity.
In Wales, an estimated 1 in 9 people have contracted coronavirus compared to 1 in 10 in Scotland.
The highest percentages of people testing positive for antibodies were those aged 80 years and over in England and Scotland, those aged 16 to 24 years in Wales and those aged 25 to 69 years in Northern Ireland in the 28 days up to 18 January 2021.
The study is based on blood test results taken from a randomly selected subsample of individuals aged 16 years and over, which are used to test for antibodies against COVID-19. This can be used to identify individuals who have had the infection in the past or have developed antibodies as a result of vaccination.