Jacob Rees-Mogg has been rubbished for "back of a napkin" economics after claiming a no-deal Brexit would boost the British economy by £1.1 trillion https://www.theneweuropean.co.uk/top-stories/jacob-rees-mogg-slated-for-back-of-a-napkin-one-point-one-trillion-pound-brexit-boost-claim-1-5689700 https://t.co/V6wnEaQgjS