Baked beans are viewed by many to be low class, chavvy and so on.
This is news to me, I have never heard or read anything to suggest that baked beans are 'chavvy'. I shop in Waitrose, it is my nearest supermarket and as far as i can taste their beans taste no different to anyone elses. Cheap beans usually have more sauce and fewer beans - but some people prefer that.
A lot of our wheat comes into this country from north Ameica, especially Canada. The importation of this wheat, which undercut the price of British grown wheat caused the recession in the farming industry that ran from 1870 to 1940.
Increases in yields mean we now import only 20% of the wheat we consume, but we import about 40% of our animal feed.