More than 70% of young people have had their first Covid dose as teenagers within months of their 18th birthday were invited to start booking their jabs.
New figures show 5,940,038 18 to 29-year-olds have received a first dose (70.2%) and 2,683,434 people have received both doses (32.4%).
The Government is scrambling to get younger people vaccinated after sluggish take-up in this age group.
Pop-up clinics in nightclubs, festivals and football stadiums have been trialled to encourage young people to get jabbed, along with incentives such as discounts on taxis and takeaways.
Teenagers who are within three months of turning 18 can also now book their vaccine appointment.

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Overall, three quarters of adults have had both Covid jabs, with nearly nine out of 10 people having their first dose.
But Boris Johnson is said to have been furious over the slow pace of inoculation among younger age groups.
Ministers appeared to be using a carrot and stick approach to encourage youngsters to get vaccinated.
Incentives such as discounted takeaways and Uber rides have been offered for those who get their jab, alongside threats over use of vaccine passports in the autumn.
Plans to require all students to be fully vaccinated to attend lectures and return to their halls were floated but have now been dropped.
The PM also served notice last month that vaccine passports would be required for nightclubs in September.
Foreign Secretary Dominic Raab effectively admitted that the Government was trying to use the threat of vaccine passports to coax people into getting jabbed.
It comes as the latest data from Public Health England and Cambridge University shows that vaccines have saved around 84,600 lives as well as preventing 23.4 million infections and 66,900 hospitalisations in England up to 6 August.
Health Secretary Sajid Javid said: "Vaccines can prevent you from catching the virus or passing it on to your friends and family, and reduce the severity of the symptoms if you do catch it.
"Having both doses of the vaccine will also help you get back to doing the things you love, such as going on holiday and enjoying nightclubs.
"Please come forward for your jabs if you haven’t already."