The government has said that all 32,000,000 over 50s could receive their vaccine by the end of March.
By next week it is expected the mass vaccination rollout will double, and more than 3m people have already had the vaccine.
Boris Johnson tweeted, “Superb news that we’ve administered over 3 million vaccine doses across the UK. THANK YOU to all who have responded to the call and to the NHS, Armed Forces and volunteers who make it happen.
“It brings real hope, but it’s critical that for now we #StayHomeSaveLives.”
A senior Whitehall source told The Times newspaper that Downing Street are “increasingly confident” that all over 50s will have received their first vaccine by mid to late March.