At least 15 million people in the UK have had their first coronavirus jab, the prime minister has said.
The figure was reached just over two months after the first vaccine was delivered in the UK on 8 December.
It came as ministers said the UK was on track to meet its pledge of offering a vaccine to everyone in the top four priority groups by Monday.
From Monday, the vaccine rollout is being expanded to include over-65s and those deemed clinically vulnerable.
In a video, Mr. Johnson said: “It has been a truly national, UK-wide effort. We have done it together.
“And in England, I can tell you we have now offered jabs to everyone in the first four priority groups, the people most likely to be severely ill from coronavirus, hitting the first target we set ourselves.”
But “no-one is resting on their laurels”, the PM said.
“We’ve still got a long way to go to. And there will undoubtedly be bumps in the road. But after all we’ve achieved, I know we can go forward with great confidence.”