Brand naming genius

Brewers to the nation Molson Coors - or, as drinkers of a certain age might know them, Bass - are to launch a low-alcohol lager with a bottle size cunningly designed to contain exactly one unit of alcohol. They must be hoping that this gesture will further show their commitment to promoting "sensible drinking" among the lower orders. Why else would they be calling the new brew "C2"? According to the hallowed demographic classification defined by the National Readership Survey (NRS) on behalf of the newspaper industry, C2 means "skilled working class".