I'm glad you asked that.
If you buy or sell a commodity (iron, steel, Brent Crude, LPG, gold, olive oil, cocoa, sugar, wheat, titanium dioxide) it now has a price at world level. If a vast container ship or bulk carrier can deliver to (or collect from) your country in a matter of days, there is not much scope for it costing less in one place than another.
If you had, say, a gold mine in Kent, you would look up the world price of gold ($1,366.80 at this moment, since you ask) and you would charge that for it; adjusted for order size and transport. The fact that it costs a UK customer £1056.27, when not long ago it was about £850, is very much his hard luck. If he doesn't want to buy it, someone else will. The gas and coal that produce your electricity have also gone up in pounds, so has the copper wire.
The same applies if you are buying, or selling, oil or petrol.
As you say, the UK workers are now being paid in shrunken pounds, and until they realise that their bread, tomatoes, Stella and TVs are costing them more, you, as a factory owner, get to pocket the difference. Unfortunately the parts you buy from the Nissan or BMW factories, your Bosch alternators, your NGK spark plugs, your Siemens control gear, the Swedish cowhides and the royalty payments you make to the patent and design owners, will put your costs up.
If you are unfortunate enough to buy your goods from overseas (clothes from Pakistan, TVs from Korea, fridges from Italy) and sell them in shrunken pounds, you have a bit of a problem, and maybe you should think about a change of career, or early retirement. Time to move on. Get used to it.
For example,
Especially when facts don't support your claim.
