Boris Johnson tops poll of post-war British prime ministers thought to have done a bad job

Boris Johnson is on a farewell tour of the country ahead of his formal resignation (Ben Birchall/PA)

Almost half of the public think Boris Johnson has done a bad job as British prime minister, the worst rating of any post-war British leader, a new poll has found.

Asked to rate the performance of British prime ministers since 1945, some 49% of people told pollster Ipsos that Mr Johnson had done a bad job during his time in Downing Street.