I'm not sure whether you're totally confused yourself, or whether you are intentionally trying to mislead anyone else.Then why do you keep harping on and on about the "free trade " with the EU, which wouldn't be "free" if we leave the EU ?????
Let me explain it, again.
We currently enjoy free trade with EU (and the EFTA countries) That's a fundamental foundation of EU principles. Freedom of goods, services, capital and people. These four freedoms are without tariffs, barriers, anti-competitive measures, etc. Although there is some leeway for temporary measures to be adopted, e.g. in the event of new member countries joining EU.
If we choose to leave EU, the four freedoms are rescinded, either by agreement, or by default after two years. Therefore we no longer are allowed, by right, to trade freely with EU. It then depends on what kind of Trading Agreement is reached with EU, if any.
If no agreement is reached import/export tariffs, barriers, anti-competitive measures, whatever, are allowable. And it is highly probable that EU would introduce some punitive measures. These would not be punitive for their own exports! Only punitive for imports from UK! And Eire, as an EU member would be obliged to follow EU policy. This would further apply to Scotland in the event of Scots voting to leave UK and join EU.
IMO, if a Trading Agreement is reached with EU, in the event of Brexit, it will inevitably involve the four freedoms again. Moreover it would IMO include UK being in the Schengen area. That is a deterioration in our current arrangement as far as control over our borders is concerned.
It will also require UK to comply with all the current EU legislation, as far as trade is concerned, and it will require UK to make substantial payments to EU without any returns, and no say in EU legislation, direction, policy, etc.
Any suggestion of UK trading globally without agreements with EU is economic suicide.
Bruce Forsyth will be back with his "Buy British" slogans because UK will suffer the kind of economic difficulties that caused us to join EU in the first place.
Needless to say the Brexit-ers have so far refused to set out their idea of what trading arrangements will be in place in the event of a Brexit.