Ross Clark,
SpectatorAssuming there was no change in what was traded across the English Channel â which obviously wouldn't be the case as consumers would start to shop around elsewhere â UK exporters would, under WTO âÂÂMost Favoured Nation' (MFN) rules, find themselves paying ã5.2 billion in tariffs on goods they exported to the rest of the EU. EU exporters, however, would end up paying ã12.9 billion worth in tariffs on goods they exported to Britain.