The Chancellor says trading regulations may vary after Brexit , and the food industry says this will cause food prices to rise. If food prices are to an extent set by the cost of imports - and EU regs don't change , then produce will enter as before? Changing our production rules might cause us problems when we export , with product being dammed back in the home market - which I wouldn't expect would cause a rise in prices.Just the reverse I'd have thought but what do I know ?