With respect, we would need a crystal ball to answer your question. What seventhheaven said is a probable outcome.
I don't want to get into to politics too much, but I would hope for the best and prepare for the worst. I expect the Brexit negotiations to get bitter and nasty, the EU has a vested interest in ensuring that the UK gets a bad deal to deter other countries from leaving and the UK conservatives are preparing a bill to turn the UK into a tax haven as a threat to the EU..... Ironically the southern EU countries seem to be more pragmatic and the northern EU countries seem to be digging trenches already, it'll be an interesting few years to say the least!