> Some British manufacturers saying {snip} that their business is doing better than before
If the British business is an export based and the product can be sourced from multiple countries then they should be doing better. The Pound has crashed yet the markets available to buy from us are still the same as before... At the moment, we are still within the EU
So if you were a German company buying 10,000 widgets and had suppliers in Europe (using the EUR) and Britain (using the GBP), suddenly the British seller would be much cheaper than before. For me, that's not a long term thing and can only be short lived, as when we leave that same market won't be available or the GBP will have risen.