With all the negativity surrounding Brexit it is hard to find any silver linings. No doubt over the coming years we will be entertained with many ideas as to what constitutes the good effects of Brexit.
Depending on whether or not trade deals are able to be struck, in quick order, with other nations, there may well be some positive effects discernible in levies which are paid to goods and services coming in from outside the EU at present.
In the mushroom sphere for instance, if one was importing medicinal mushrooms from North America say, then perhaps the customs duty on those products would hopefully be slashed.