It comes as 40-year-olds will be invited to book their first vaccine from today. So far, 48 million jabs have been given across the UK – including 14 million second doses.
The numbers of people falling ill with Covid has also dropped to its lowest level since the start of the pandemic.
In another boost for the nation, Boris Johnson is expected to be told that social distancing can be scrapped at big outdoor events from June 21.
Scientist have been studying and monitoring the impact of letting fans into events such as the FA Cup semi-final.
The latest figures show that there are only 757 symptomatic cases a day in England.
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Ministers expect that those aged 35-39 will likely be called up for a vaccine in the week starting May 10.
If this plan happens, it suggests that the rollout will be several weeks ahead of its formal target to inoculate all adults by the end of July.
Chief executive of NHS England Sir Simon Stevens called the UK’s vaccination rollout the “most successful in health service history”.
He added: “With nine tenths of people aged 45 and over having been jabbed, nearly three quarters of a million new appointments were made in just two days as our booking service opened to people aged 42 to 44.
“With second doses also proceeding apace, we’re now ready to invite all those aged 40 and over to join the most successful vaccination drive in health service history.”