MHRA said that the vaccine had met the expected standards of safety.
People from India who have British or Irish citizenship will be able to get entry.
Britain's opposition parties had criticized Boris' visit to India due to the Corona crisis in the country.
Till Friday morning, a total of 82 cases related to the new strain of coronavirus have surfaced.
All these 20 new cases have been detected in the lab of NIV, Pune.
All these infected returnees have been kept in self-isolation by the state government.
Moderna's vaccine has been found to be up to 94% effective against the virus.
Scientists had identified a "new variant" of coronavirus in the south of England.
PM Johnson has invited PM Modi for the G7 Summit to be held in the UK next year.
UK has become the first country to authorize Pfizer-BioNTech Covid vaccine for general use.
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