My amateur numbers are just as good as your government body estimates? No, better!
And they show we'll clear our national debt just by leaving the EU!
Hooray, this guy should be responsible for all our finances!
Furthermore the fact that this man was able to math up these numbers proves that our treasury is lying to us. (As per the Youtube "Smashes the Treasuries lies in 60 seconds!" description.)
I'll give it that it's a positive message (aside from the we can't trust the government one bit part of it) and this guy is probably smart, but you can't deny that it seems a tad silly if you take a step back.