It’s not near the $1.3 trillion developing countries were asking for, but it’s three times the 2009 deal that is expiring.

On the basis that the new deal agreed at COP29 will mean a trebling in existing climate aid, we may presume that UK taxpayers are now going to be stumping up around £6 billion a year.

Countries at the COP29 summit in Baku adopted a $300 billion a year global finance target on Sunday to help poorer nations cope with the impacts of climate change, a deal its intended recipients...