It amazes me that all these politicians and experts, whether pro- or anti-Brexit can tell you exactly what is going to happen in 3 years time, when they can't even tell you what will be the situation in 3 months with respect to inflation, exchange rates, unemployment, GDP, interest rates, house prices or anything else.
Anyone making Brexit predictions of this type should make them alongside a promise to donate a year's salary to charity if they are shown to be wrong.
As a starter, if there is a no-deal Brexit then Mark Carney expects house prices to fall by 35%. He should promise to donate £880,000 to charity if they don't fall or if they fall by less than 30%.