It shouldn't affect prices that much. The cost of fishing something in Norwegian waters, landing it and transporting it from the port to Bristol/Leicester/Inverness doesn't really depend on whether it's a Norwegian or British trawler and port.

I want to digress, though. For several decades, Britain's approach to negotiations was to let the EU do it, and sometimes get an excetption that the Germans pay for. That's been a lot simpler than "real" negotiations between states, and it sounds as if they're really out of practice.

As was also visible last week, when an Australian minister was to be put "on an uncomfortable chair" and made to sign a deal. Of course the Australian arrived with a ready offer and willing to sign at once, and of course the British signed what the Australian wanted.

Experienced negotiators do not signal being in a hurry.