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Brian, Britain has a super-valuated pound, which accounts for lost export opportunities with countries outside both the EU (fictional Europe), and Europe proper (from Calais to the Urals).
Trade with other countries, Canada, the USA, Australia, New Zealand and Japan is also easy-going, as these countries have an average wage almost identicle to Britain and Europe (EU and non).
Eastern Europe, though, including Russia, has a lower national average salary, which makes trade unfair.
But all the continents beyond Europe (Africa, Asia and South Amaerica), have complete different national average salaries, anywhere from a fifth to a twentieth of that in Britain.
The super-valuated pound is an obstacle to fair trade with these continents, as the super pound it accounts for the difference in national average salary.
I know that no-one ever dwelves on this subject, either in Parliament or in the news-papers and peer-revised journals, but that's too bad.
However, the trading partners of Britain in Europe who trade on equal terms with us are those with an equal national average salary, and these are the western European economies. Only, they produce the same as we do, meaning that a large proportion of trade with them is artificial, enforced, unnecessary, and only adds to the carbon foot print.
What I described here comes under economic principles, and one day these principles will be addressed, whenever.
As for Britain receiving a very large handout from the EU, dream on!