Your reference lecturer has a project funded by
"UK Bologna experts are a European Commission funded team", from https://pure.york.ac.uk/portal/en/pr...b7a60a%29.html

Apart from that, his publlications are related to the EU aspiration for a CSDP (see his data in the University website for more detail) and a standing defence force.

"What did the EU ever do for us" implies that we are not capable as a nation: we can't possibly stand on our own because the EU does everything for us - see George Orwell, 1984 for more about that line of thought.

The figure of 57% trade with the EU may be out of date; others are quoting less than 50% trade with the EU - but, anyway, trade won't stop when the Germans want to continue exporting their cars to the UK.
It is the case that the other nations in Europe sell more products to the UK than we manage to sell into the continental market - in or out, we need to improve on our exports in the years to come to earn our way in the globalised world.

As one scenario (at worst if Germany refuses to sell its' VWs etc here) UK car customers would have to buy more vehicles from the Honda facility in Swindon, the Toyota factory near Derby or the world-beating Nissan factory near Sunderland.
(All owned by the Japanese).

Nevertheless, I am certainly prepared to read anything and everything over the next 4 months while judging, in the main, by what people do and not so much by what they say.
The discourse has only just started.

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Dave