Their forecast of income gains from Brexit contrasts with all other economic analysis, write Thomas Sampson, Swati Dhingra, Gianmarco Ottaviano and John Van Reenen.

Jacob Rees-Mogg has put his name to an “Economists for Free Trade” (EfT) report claiming a no-deal Brexit would bring a £1.1 trillion boost to the British economy over the next 15 years. This is pure fantasy. The overwhelming consensus amongst economists is that quitting the EU with no deal would be a disaster on a truly magnificent scale.