Exclusive: Badenoch’s flagship conference policy document cites £957bn estimate, twice the total in climate advisers’ data

Kemi Badenoch’s flagship party conference policy document overestimated the cost of net zero by nearly £500bn, seemingly after someone accidentally double-counted figures on a spreadsheet.

The apparent error appears in a chapter on net zero in The Right Way, a 100-page policy document produced for the Conservative conference in Birmingham. Badenoch repeatedly used the phrase in her main speech.