MILLIONS more people in their 20s will be able to book their Covid vaccine from tomorrow.
Those aged over 23 in England can get an appointment from June 15, the Prime Minister announced.
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The vaccine programme had been extended to those aged over 25 last Tuesday morning.
People who are eligible for their vaccine will be able to book on the NHS booking website, or by calling 119.
Boris Johnson also said the target to give everyone in the UK their first dose by the end of July had been brought forward to July 19.
And the rollout of second jabs to those in their 40s will be accelerated, he confirmed.
Now all over 40s are to be offered their second jab eight weeks after the first, instead of 12.
It comes amid spread of the new Delta (Indian) variant, which has forced ministers to hold off lifting lockdown on June 21.
Figures show 79 per cent of Brits have already had their first dose, and more than half had two.
But it's feared the proportion is not enough to hold back a third wave that will put pressure on the NHS.
Therefore a delay to June 21 - to July 19 - aims to get millions more jabbed to "save many thousands of lives".
Mr Johnson said that by July 19 around two-thirds of the adult population would have received two jabs, including all over-50s, the vulnerable and health and care workers.
Anyone over 40 who had received a first dose by mid-May should also get their second jab by then.
Mr Johnson said he is “confident” that no more than four weeks will be needed before "Freedom Day" can go ahead.
He told a Downing Street press conference that the spread of the Delta variant meant “we have obviously faced a very difficult choice”.
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“We can simply keep going with all of Step 4 on June 21, even though there is a real possibility that the virus will outrun the vaccines and that thousands more deaths would ensue which could otherwise have been avoided.
“Or else we can give the NHS a few more crucial weeks to get those remaining jabs into the arms of those who need them.
“And since today I cannot say that that we have met all our four tests for proceeding with Step 4 on June 21, I think it is sensible to wait just a little longer.”