Every household will lose a staggering £1,250 a year because of the Brexit vote, independent forecasters say – as they painted a devastating picture of falling living standards, including no increase in real wages for at least another decade.

The respected Institute for Fiscal Studies (IFS) also warned that working families will be hit hardest by the unprecedented slump, with pensioners better protected.

Workers will suffer because of an expected 3.7 per cent fall in real earnings by the start of the next decade, compared with the pre-referendum forecast.