What apart from 20% increase in the cost of any item not made 100% in the UK? GBP to USD the week before the Vote $1.55 last time I bought any I got $1.175
And 'Brexit' caused this how, exactly?
I think you'll find the cause of that lies with speculators, people who buy and sell currency with the intention of making a profit. They rely on a trend in either direction to trade against, and their very actions create and sustain that trend. Ever wondered why the pound suddenly isn't worth exactly one Euro or One dollar? Because no one could make a profit by simply moving it around if it were. This current trend can cause problems for trade, but increases profits by speculation at ratio of over ten to one. Retailers suffer, bankers and their traders love it, but only in the short term. The money hasn't vanished, it's simply changed location from one sector of business to another. Recession isn't a lack of money, but a lack of movement of money. It might cost you more to but your dollars for your holiday, and it'll cost an imaginary trader more too, but they'll have many, many more pounds with which to buy them.
"Brexit" is at this time an abstract concept, not a physical reality. The phenomena we see in this regard are the actions of people profiteering on currency at the expense of profits made in other sectors of the economy. Brexit is an excuse, not a cause. In Planet X's case their woes are caused by the actions of currency traders and the impact they have caused on the relative value of our currency.