Here’s how.
Disclaimer. The following thread does not constitute financial advice. Before making any investment you should consult a professional financial adviser.
Just satire.
The first thing you need to do is invest it in non-Sterling denominated assets.
@Jacob_Rees_Mogg ‘s firm has a few funds, all investing $8.4billion in such assets, so ask him if you’re not sure.
He knows all about this.

And let’s suppose that you get 2 Wongas to the Pound. W2=£1. The rate doesn’t matter.
So now you’ve got W200million in stocks denominated in Wonga currency.
Sterling fell from €1.30 in June 16 to €1.08 in August 17, a 17% fall, and at that point nothing had really changed.
No-deal is the best.
But let’s not be too greedy, and just assume a 20% fall.
So now, where £1 used to by 2 Wongas, now it only buys 1.6 Wonga.
As Sterling falls, your Wonga assets are going up relatively speaking. A 20% fall in Sterling means 1 Wonga was worth 50p, but is now worth 62.5p!
So your W200million stocks overnight are now worth £125Million!
A 20% fall in the value of Sterling makes your Wonga denominated stocks (and every other currency) worth 25% more *overnight*!
Fantastic news isn’t it!
So much easier than running a real business to make an honest profit any day!
Don’t forget, a 20% fall in Sterling means you’ll be 25% better off in £ afterwards.
A 50% fall *doubles* your money!!!
It may take a while mind.
Finding an ally who’s not frightened to spread racist propaganda will help.
if you’re more worried about 4 millions UK export jobs that rely on friction free exports to the EU,
or the cost of your summer holiday abroad,
maybe a #Brexit get rich quick scheme is not for you.
If so, sign up for a #PeoplesVote.
Have I missed anything?
Nigel watching pound fall on referendum night.

So if anyone asks, just blame your no deal Brexit on EU intransigence.
Good luck!
Anyone living in UK with large sums invested in non-Sterling assets will be delighted with a no-deal #Brexit.
Immediate windfall benefit rises exponentially with size of fall in £ Sterling.
@Jacob_Rees_Mogg is one of many similar.

