Umm no. What it means is that there are more jobs associated with EU exports to the UK than there are with UK exports to the EU. Companies have shareholders, so they will want to maintain their sales. However, with WTO tariffs UK exports will be no more expensive than in June 2016, whereas EU exports will be very expensive. So, in order to continue selling their goods in the UK, they will have to move manufacturing over here, or local manufacturers will ramp up production and jobs to fill the vacuum. And if they do sell we collect huge amounts of money in tariffs. Jobs, mean more employed people paying tax and NI.
If it was all excess production, nobody would be bothered about job losses. And no, it is not the UK buying these imports, it is the UK consumer. They may purchase with or without credit, either way, the seller gets their money instantaneously. And if you buy a product from country X, you pay in the currency of country X. Additionally, UK cars are RHD and EU cars are LHD, so nope, exports are definitely not excess production otherwise the steering would be on the wrong side. Equally labels are language specific. The only other exchanges of money currently is that we give the EU money on net each year for no reason, just so that more of their jobs than ours are protected.
Minerals are sold on the global market, and ultimately paid for by the people who buy products made from them, or people who use them, like car drivers. Those minerals used directly by the state, e.g. fuel for armed services, are paid for via tax, which takes us back to jobs.