i've been speaking to dr zubaida haque, a member of the independent sage group of scientists. vaccination roll—out but said we must still be cautious. it is fantastic news. it is a fantastic testimony to science and the nhs that we vaccinated 17 million people, it is incredible news, but we mustn't relax. the problem is, vaccination, while absolutely required, is not the whole answer to the problem, and that is because vaccination, whilst preventing severe disease, we are not entirely sure whether it stops transmission, so we still need a lot of restrictive measures to not only bring down cases but to make sure that they stay down, and that is because unless we keep cases low, circulating virus, high rates of circulating virus means there could be more mutation of the virus and more mutation of the virus might lead to a vaccine—resistant virus. we have still got a long way to go with the vaccination. isn't there some evidence already emerging suggesting the vaccines do prevent transmission? there is some tentative evidence, but it is early days yet, tim. we have still got the