This paper examines how the British government has used statistics about COVID-19 for political ends. A distinction is made between precise and round numbers. Historically, using round numbers to estimate the spread of disease gave way in the 19th century to the sort precise, but not necessarily accurate, statistics that are now being used to record COVID-19. However, round numbers have continued to exert rhetorical, ‘semi-magical’ power by simultaneously conveying both quantity and quality. This is demonstrated in examples from the British government’s claims about COVID-19. The paper illustrates how senior members of the UK government use ‘good’ round numbers to frame their COVID-19 goals and to announce apparent achievements. These round numbers can provide political incentives to manipulate the production of precise number; again examples from the UK government are given.