I'm not a vegetarian, by an means- but I try to eat vegetarian a significant portion of the time. For me, it's purely an environmental issue, as a largely animal based diet by all is unsustainable for our planet.
I live in a pretty tiny village in Cambridgeshire and am able to find tons of vegie options at our small local market, at the Curry house, and at the Oriental Kitchen (Chinese/Chippy/Pizza). Like many, have said it seems to be easier to eat Veg here.