Boris Johnson announces press conference: What time the Prime Minister address the nation?

The Prime Minister confirmed the milestone and described it as an “extraordinary feat” to have vaccinated millions of the most vulnerable people in the country.

Boris Johnson also said that in England jabs have been offered to everyone in the Government’s top four priority groups.

The priority list set out by the Joint Committee on Vaccination and Immunisation (JCVI) includes nine categories.

The top priority was care home residents and their carers, followed by people over the age of 80 and frontline health and social care workers.

The third priority group was people aged 75 and over, and the fourth group was people over the age of 70 and those deemed to be “clinically extremely vulnerable”.

Government data up to February 13 shows that of the 15,599,904 jabs given in the UK so far, 15,062,189 were first doses – a rise of 505,362 on the previous day.

Some 537,715 were second doses, an increase of 2,846 on figures released the previous day.

In a video posted on Twitter, Mr Johnson said: “We have reached a significant milestone in the United Kingdom’s national vaccination programme.

“On December 8 just after 6.30am in the morning, this country’s first coronavirus jab was delivered safely into the arms of Margaret Keenan at University Hospital in Coventry.

“In the following two months, this country has achieved an extraordinary feat, administering a total of 15 million jabs into the arms of some of the most vulnerable people in the country.

“Those vaccines have been delivered in our NHS hospitals, in GP surgeries, in high street pharmacies, in cathedrals, churches, mosques and temples, in community centres, in living rooms, in cities, towns and villages across England, Scotland, Wales and Northern Ireland.

“We’ve even delivered jabs in a fairground.”

Meanwhile, strict new quarantine rules are coming into force requiring UK nationals returning from 33 “red list” countries to isolate in a Government-designated hotel for 10 days in an attempt to prevent new strains of the virus entering the country.

The Prime Minister will this week begin considering how restrictions in England may be eased ahead of a statement on February 22 setting out his “road-map” out of lockdown.

He is already under pressure from some Tory MPs to push ahead amid frustration at the damage that is being done to the economy and the impact on people’s lives.