The announcement comes as latest data from Public Health England and Cambridge University shows that around 60,000 deaths, 22 million infections and 66,900 hospital admissions have been prevented by the vaccines.
The Department of Health and Social Care (DHSC) said a total of 86,780,455 jabs have now been administered, with 89% of people having received a first dose and 75% two doses.
Prime Minister Boris Johnson described the milestone as “a huge national achievement which we should all be proud of”.
“Our incredible vaccine rollout has now provided vital protection against the virus to three-quarters of all UK adults. This is a huge national achievement, which we should all be proud of,” the prime minister said in a statement.
“It’s so important that those who haven’t been vaccinated come forward as soon as possible to book their jab – to protect themselves, protect their loved ones and allow us all to enjoy our freedoms safely.”
And Health Secretary Sajid Javid said the vaccine is “helping us to work our way out of this pandemic towards normal”.