There were three wrong propositions behind the Remain campaign :
1. The EU was primarily a free trade club which we had to belong to to trade with them.
2. Trading on most favoured nation terms with countries under World Trade rules did not allow much trade.
3. Their gravity model forecasts assumed you could only trade extensively and successfully with near neighbours. They still use false forecasts from this system instead of now using the outturn data which was so much better.
The EU was and is a European union gaining ever greater powers and controls over all aspects of member states governments. It is a currency union, has a common foreign and security policy, shared frontiers, integrated transport systems, mandatory environment policy and much else. It is not a free trade area. It is a highly regulated customs Union.
Trading onWTO terms has produced big increases in trade between WTO members as barriers and tariffs were brought down. Our trade with the US has grown well with no Free Trade Agreement to supplement WTO membership.
Trade has expanded greatly with faster growing economies on the other side of the world, as with China.
Over the last week the UK has been able post Brexit to negotiate a Freer Trade Agreement with India and a trade deal with the US. Since leaving we have rolled over all the EU trade deals with third countries and gained improvements in some. We have joined the big and important TPP .
Since 2016 our trade has expanded well. The fastest growth has been in services and in the larger share of our trade which is with non EU countries.
The impact on growth and GDP is assessed at just an extra 0.1% from the Indian Agreement next decade. The US deal abates the damage done by higher US tariffs on our exports but still leaves us with a negative on growth this year.