Three of the ten largest falls in value which the British pound has ever experienced occurred this year after the Brexit vote in June. The two largest falls in all time were on the 24th of June just after the vote and today on the 7th of October. The other big fall was on the 27th of June. i.e. the Monday after the big fall on Friday 24th - the earliest possible date on which the currency could fall more than it already had.http://www.independent.co.uk/news/business/news/sterlings-punishment-five-charts-that-show-how-the-pound-has-been-ravaged-by-brexit-a7350251.html
Don't try to pretend that Brexit makes no difference, everything in Britain has been devalued in the UK. Here's what Rupert Pennant-Rea, an asset manager and former deputy governor of the Bank of England, says: "In essence, the currency markets are saying that all UK assets are worth less than they used to be. Land, property, companies, bank deposits, government debt – everything in the UK has been marked down against the rest of the world".
Note that this mark down also includes all the money in British peoples' pockets. i.e. everyone in the UK got a 20% pay cut this year. Everything you buy which is imported will have to go up in price by about that percentage, and everything which is made in the UK but dependent on imported components (i.e. pretty much everything) will be affected by a similar margin.
How much has this affected people ? US economist Tyler Cowen said some weeks ago that it was equivalent to over 5600 pounds per person in the UK, but that's not the full extent of it as yet. The pound has continued to fall since he made his calculation. In fact, the second greatest fall of all time in the currency occurred since then:http://www.independent.co.uk/voices/mysterious-drop-sterling-pound-ftse-stock-market-brexit-theresa-may-news-what-made-it-happen-a7349901.html
Sadly, the future isn't particularly rosy in the UK. But you got what you voted for and certainly can't say that you were not warned about this.