well, it is stupid things that omnis say. We know not all omnis are like that, but I think that changing it to "ignorant things people say" would be a bit overboard on being politically correct.
Anyhow, the portrayal of vegetarians i am often aware of a vegetarian family in the Uk is that it's a generally normal family, who have been vegetarian somewhere between 15 and 20 years, eat primarily healthily, are quite a strict, middle class family, who most likely have an Aga cooker, and are slightly quirky.
The advertisement I was talking about befor eis for warburtons bread. the vegetarianism thing isn't all that blatant until the end. There's a comment about a bacon sandwich, and we see the bread, pictured on a kitchen table. Behind it, we can see a shelf compromising of entirely vegetarian cookbooks, and a britafilter thingy (Which means they either live in blackpool, where the water tastes rubbish, or they're a health conscious middle class family) And you don't get many middle class people in blackpool - they're all smackheads.
Anyhow, the advertisement does have the token "aww... look, a cute kid" moment when the daughter grabs her little stuffed pig and holds it protectively at the mention of a bacon sandwich. And the mother is characterised as an over-authoritative family figure. not the best of representations, in all honesty. Which is a shame really, since vegetarians don't really get all that much representation in the media, so it's nice to see some positive representation as opposed to negative.
Anyway, most people in the health-conscious or vegetarian demographic are more likely to buy warburtons, since it doesn't use artificial additives, (E300 is in there, but try telling me that's an unnecessary additive - You'd die if you didn't have it!) or use bread machines.