Most things I buy are British-made or produced, especially food, to keep food-miles to a minimum, or at least Western-European, so it doesn't really apply anyway. It only really applies to kumquats, which I love, but the only ones I ever see in supermarkets are from Israel, so I don't buy them. To anticipate your next point, of course my refusing to buy Israeli (or any other nasty regime's) produce makes not a ha'p'orth of difference politically or economically, but it's a matter of personal integrity. For the same reason, I avoided South-African produce during the days of apartheid. Oddly, though, no-one ever accused me of being, or implied that I was, obsessed with South Africa to the exclusion of other nasty regimes, or suggested or implied that I might be prejudiced against white South Africans.