The most naïve estimate of the odds of becoming an MP would be to work out how many people alive in the UK today will ever serve as an MP (which we estimated at about 3,100, five of whom would become prime minister), and divide by the total population of the UK (64 million), giving a 1 in 20,000 chance of becoming an MP, and a 1 in 12 million chance of becoming prime minister.
