In announcing the most far-reaching restrictions on personal freedom in the history of Britain nation, Prime Minister Boris Johnson resolutely followed the scientific advice that he had been given. The advisers to the UK government seem calm and collected, with a solid consensus among them. In the face of a new viral threat, with numbers of cases surging daily, I’m not sure that any prime minister would have acted very differently.

But I’d like to raise some perspectives that have hardly been aired in the past weeks, and which point to an interpretation of the figures rather different from that which the government is acting on. I’m a recently-retired Professor of Pathology and National Health Service consultant pathologist, and have spent most of my adult life in healthcare and science — fields which, all too often, are characterized by doubt rather than certainty. There is room for different interpretations of the current data. If some of these other interpretations are correct, or at least nearer to the truth, then conclusions about the actions required will change correspondingly.