Ah, but our collapsed pound and all those tariffs...

As I'm sure you realise, new legal conundrums have to be tested. There is no precedent for a net contributor leaving the EU without paying their dues. You don't have to believe me. You can google this stuff and get the views of people far more expert than you and me. It is by no means settled that we can leave without paying and that'll be that. That's your hubris and brave face showing through. Reality could be different. By the time we leave our economy will be sick, we will not have all these wonderful WTO deals in place and we will look like a very unattractive potential trading partner. And you've said nothing about the bureaucratic nightmare facing our service sector. Go on, look it up. We are going to pay up. Face it.