The debate continues among Londoners about what to put on the famous Trafalgar Square ‘fourth plinth’ which has so far hosted a wide range of wacky installations and whose present incumbent, a statue of a certain KR Park, will elicit from most people the question ‘Who?’ Now the British Medical Journal has weighed in with an editorial backing the campaign of the Edward Jenner Museum to have his statue parked in what is apparently the fourth most visited tourist attraction on Earth. For those with no interest in the history of science, and who don’t do pub quizzes, Edward Jenner is acclaimed worldwide as the man who invented the vaccination against smallpox, a disease which has probably killed and maimed more people than all the wars of history combined.