I really don't think leaving the EU (in the way that it is being conducted anyway) will do anything to protect the UK from recession.
Quite the opposite in fact. UK is tied to Europe via trade whether you like it or not, so when they get a cold UK will get the flu and all that.
I suppose it would be better to paddle your own canoe in a maelstrom of recession. But sure, go ahead, prove it will be better that way.