I can't help thinking you've got things backwards. I'm pretty certain that food is quite high up on the list of necessities of life, and that most people don't have the means or facilities for producing it themselves. So in any sensible economic system you'd expect farmers to do quite well. My train of thought leads me to question whether the current system is sensible...and that leads on to the EU...and bureaucracy...and jobs for the boys...wine lakes...butter mountains...and so on. I think the real question is whether Britain and Britain's farmers will still have the necessary backbone to deal with some short-term disruption or whether they, like their sheep, have been over-bred, in the farmers' case by the EU, to be totally reliant on a silly system dreamed up by some drunken, otherwise unemployable, morons in Brussels. It will be interesting to see.