The UK’s biggest blue-chip companies will have to publish information on their CO2 emissions under new plans drawn up by the Financial Conduct Authority — and enhanced rules for insurers and fund managers will follow.

The UK regulator said on 6 March that, under its proposals, all commercial companies with a premium listing on UK markets will have to make climate-related disclosures according to the G20-backed guidelines drawn up by outgoing Bank of England governor Mark Carney and financial entrepreneur Mike Bloomberg in 2017, “or explain why not”.