I think Britain is going to enter a recession, not to mention the Brexiteers have kinda overlooked a lot:
1. There's increased immigration now, since people are coming to claim citizenship while they still can, since there's a possibility they can't in future.
2. Britain sorely needs the immigrants for them to pour cash into the economy, as well as help run and start businesses.
For example, as a Canadian, Brexit is great for me since my savings are now worth so much more here. Britain wants my money.
But in all seriousness Britain won't leave the EU, and instead "leave" the political union, and join the trade union, which has to pay membership fees and have free movement of people, without any political representation in the EU parliament.
GG Britain.