Chris

More than two thirds of our GDP is not exported. The point about trade deals is you adhere to the rules of that deal whenever you trade with the other party. Canada's domestic businesses that do not export to the EU are not bound by any of the rules you outlined above. Sadly, British firms that deal only domestically must still adhere to whatever EU rules are in force.

And will you please, please stop producing Norway as evidence. Norway's treaty with the EU was designed to smooth the path to full membership. No serious attempt was made to recognise Norway's status as a non-EU country because those brokering the deal fully expected to take Norway in to the EU in due course. It was a democratic referendum that put paid to that, but sadly due to the high-handedness of their politicians, the Norwegian people are stuck with a deal that is far from brilliant for them. Though it should be noted that for all that, Norwegians still prefer their current status to EU membership.