UK PM Johnson hails vaccine milestone, but says still a long way to go

Prime Minister Boris Johnson hailed the success of Britain's vaccine programme after data showed 15 million first doses had been delivered, but he added there was still a long way to go.

"Today we have reached a significant milestone," he said.

"No one is resting on their laurels... We've still got a long way to go and there will undoubtedly be bumps in the road, but after all we've achieved I know we can go forward with great confidence."