The UK could be at the start of a third wave of coronavirus, a government adviser has said.
Professor Andrew Hayward, a professor from the Scientific Advisory Group for Emergencies (SAGE) and infectious diseases expert at University College London, said he is "very concerned" about the Indian variant due to its ability to spread quickly.
"That really brings it back down to this race against the vaccine and the virus, except the virus just got faster," he told BBC Breakfast.
Asked if the country was at the start of the third wave, he said: "I think so. I think what we can see is that this strain can circulate very effectively, although it was originally imported through travel to India, it's spread fairly effectively first of all within households and now more broadly within communities, so I don't really see why it wouldn't continue to spread in other parts of the country.
"Obviously we're doing everything we can to contain the spread of that, but it's likely that more generalised measures may start to be needed to control it."