Around half a million 44 year olds will receive a text inviting them to get their jab through the national booking service, NHS England said.
The decision to move to people aged 40-43 will be set out in the coming days, with the NHS vaccinating in line with advice from the Joint Committee on Vaccination and Immunisation (JCVI) and as supplies allow.
NHS England chief executive Sir Simon Stevens said: “Thanks to NHS staff, people aged 45-49 have been hot on the heels of millions of people most at risk who were quick to take up the offer of a vaccine with more than two thirds getting their lifesaving jab, marking another medically important milestone in the biggest vaccination campaign in NHS history.
“When the time comes, and you get that text, book an appointment to get your vaccine – it is the best protection you and your loved ones will receive from this deadly virus.”
NHS medical director Professor Stephen Powis said: “It is testament to the hard work of NHS staff that we are now able to vaccinate people in the next age group.
“If you are aged 44, when you are invited to do so, please do book your jab as appointments become available – it is simple, effective and provides vital protection against the coronavirus.”