Two devolved governments attack ‘unilateral’ tax on carbon pollution proposed by UK if Brexit talks end with no deal. The UK’s plan to institute a national carbon tax if it crashes out of the EU without a Brexit deal is “plainly unacceptable”, the Scottish and Welsh governments said in a letter to London.

In a note on Friday the UK government said that if no-deal is reached with Europe, London would initially replace the bloc-wide emissions trading system (ETS) with a country-wide tax, beginning in 2019.