“It is possible the Conservatives copied the figure without checking it. It appears to have been published in a report by the rightwing thinktank the Institute of Economic Affairs and also included in an article in the Spectator.”
theguardian.com
Tories overstate net zero cost by nearly £500bn in apparent spreadsheet error
Exclusive: Badenoch’s flagship conference policy document cites £957bn estimate, twice the total in climate advisers’ data