It seems that the UK version of the FDA, the Food Standards Agency (FSA) takes vegetarian food a bit more seriously than they do here in the United States. Actually I say that even though I have no idea whether the FDA gives any attention to vegetarian food labeling. Reading more about it, it's quite interesting -- there's evidently a group in the UK, the
vegetarian society that has, among other things, a marking program for vegetarian foods and they have more than 3000 different "V" marked foods on the shelf in the UK! This is very cool, I suspect it has a lot to do with the fact that there are so many Indian expats in the UK (they are the largest ethnic minority in the UK not to mention that I've heard lots of poeple jokingly say that curry is a national dish in the UK).
http://www.foodnavigator.com/news/news-ng.asp?n=61400-food-makers-face