TOPSHOT - Anti Brexit demonstrators hold up smoke canisters as they attach a banner to Westminster bridge in central London in support of migration on November 28, 2018. - Britain will be economically worse off in any scenario outside the EU, with a no-deal Brexit rendering GDP 9.3 percent smaller than it would otherwise be in 15 years' time, the government said Wednesday. (Photo by Daniel LEAL-OLIVAS / AFP)