Almost 70% of the adult population in England now have COVID antibodies, latest figures suggest.
An estimated seven in 10 adults (68.3%) in private households were likely to have tested positive for coronavirus antibodies in the week to 11 April, according to the Office for National Statistics (ONS).
That’s up from an estimated one in two, or 53.1%, two weeks earlier.
The presence of COVID-19 antibodies suggests someone has had the infection or has been vaccinated – and the inoculation rollout has now reached more than 33 million people across the UK.
In Wales, some six in 10 adults (61%) in private households tested positive for antibodies in the week to 11 April, according to the same new figures.
This is also up from around one in two adults, or 48.2%, two weeks before.
For Scotland, the latest estimate is six in 10 adults (57.8%) – up from just over four in 10 (43.8%).
And for Northern Ireland, the estimate is also six in 10 adults (62.5%) – up from just over one in two (54.6%).
On 27 April, the UK recorded 2,685 new cases and 17 coronavirus-related deaths in a 24-hour period
Since the start of the pandemic, a total of 127,451 people have died in the UK within 28 days of testing positive for COVID-19, and there have been 4,409,631 lab-confirmed infections.
First doses of a coronavirus vaccine have now reached 33,843,580 after 90,695 people had their jab on Monday.
Also, 304,688 people had their second dose on Monday, meaning a quarter of adults in England are now fully vaccinated.
The next phase of the vaccine programme means those aged 42 and over in England are being offered the jab.
The figures come as domestic COVID-19 cases "look good" to enable foreign holidays next month, according to Transport Secretary Grant Shapps.
The cabinet minister issued the change in advice, as the government unveiled plans for a traffic light system to allow overseas leisure trips to resume.
It comes just days after Downing Street published an official document that urged people "not to book summer holidays abroad until the picture is clearer".
However, the government has refused to confirm whether foreign holidays will be permitted from 17 May – and where Britons will be able to travel without self-isolating on their return.