Under WTO rules you can't favour one country over another by charging a lower tariff on particular goods, just in order to "do a deal" with them. All this talk of doing amazing deals with anyone and everyone has to be seen through that lens. It's going to be a minefield. And not everyone is going to be enthusiastic about doing deals with us, or even going to be caring a jot. In terms of goods we are always going to buy more than we sell. And I have yet to hear anyone addressing the labyrinthine nightmare that our service sector is going to face.