The UK government says it's confident it can vaccinate 17 million more people by the end of April.
It's moving on to giving first doses of covid-19 jabs to all those over 50 and with underlying health conditions.
It comes after the government hit its target of offering a vaccine to 15 million people in the top four priority groups by Monday.
The next phase of the rollout will also see millions of people receiving second doses.
Prime Minister Boris Johnson is due to set out a 'roadmap' for easing lockdown measures next Monday.
Vaccines Minister Nadhim Zahawi says the rate of vaccination will actually need to increase.
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