The markets rallied after it became clear that no one was going to hit the Article 50 button anytime soon. Once that does happen expect further market shock. Of course no one can predict the future with certainty, but if the UK doesn't fall into recession in the near future, I'll be (pleasantly) surprised. The falling pound, whilst potentially good for exporters, can only really have a negative impact generally, on an economy which relies far more on imports.