Covid Booster Jabs Available at Walk-in Sites in England
About 30 million people who had their second vaccination more than six months ago will be able to get a booster without needing to make an appointment.
The NHS online walk-in finder will let people check their nearest centre.
More than six million people have already had a booster jab or a third dose, NHS England said.
A booster is an extra dose to help people who have been double-jabbed retain their immunity.
Separately, a third dose is a top up for those who may not have had a full immune response from the first two doses. These are being given to people with severely weakened immune systems.
Those entitled to a booster jab include people aged 50 and over, care home staff and residents, and frontline health and social care workers.
Also included are people aged 16 to 49 years old with underlying health conditions which put them at greater risk of severe Covid, and adults sharing a home with vulnerable people.
The top-up will be available at hundreds of sites across England, and NHS England said nearly every person registered with a GP practice lives within 10 miles of a fixed vaccination site.
More than 45 million people in the UK have been double-vaccinated, according to latest government figures, and nearly eight million have received a booster or third dose.
More information on walk-in sites for Covid-19 booster jab.