Claim

The prime minister told supporters that Labour’s economic plans would “wreck the economy” and that the £1.2 trillion of additional spending would cost each family an extra “£2,400” in taxes. 

Facts

Labour’s manifesto had not been published, let alone costed. 

Verdict

Johnson’s £1.2 trillion figure is a palpable fabrication. Full Fact concluded: “Many of the figures behind this estimate are uncertain or based on flawed assumptions.”