Dr Chris Smith, a virologist from the University of Cambridge said the UK could already be close to 100,000 COVID cases as 'we just don't know about lots of them'.
Professor Neil Ferguson said there are a number of reasons why the UK's infection rate is higher than that of other European nations.
Experts have voiced concerns over rising COVID rates among schoolchildren, including hospitalisations.
'Because the Delta variant is so infectious, we are not looking at a theoretical risk of children 12 to 17 becoming infected.'
Booster campaigns launched by rich countries are putting additional pressure on supplies as poor countries struggle.
BAPS Shri Swaminarayan Mandir, also known as Neasden Temple, in Brent opened a vaccination centre in its grounds in February.
The owner of the Blaeneinion eco-retreat in Wales described the vaccine as 'experimental', despite clinical trials showing it to be safe and effective.
Sajid Javid has condemned the sharing of 'misinformation' and 'outright lies' about COVID vaccines.
Rachel Elnaugh reacted with fury to the announcement of COVID vaccines for children.
The government has announced that more than 30 million people in the UK should be offered a COVID booster jab this winter.
The Minerva Inn has asked customers for proof that they had been given both doses of the COVID vaccine.
Vaccines Minister Nadhim Zahawi told Sky News that COVID vaccine passports will be introduced for nightclubs and major events by the end of September.