Grocers undoubtedly felt the economic pressures in 2012 with discounters enjoying buoyant growth as a result of an increase in value-seeking consumers. Shoppers' focus on value led to rising online sales and further investment in the channel from the world's food retailers. However, the year was not just about expansion. Some of the world's largest grocers have scaled back overseas, with the trend towards internalisation slowing. Michelle Russell takes a look at the highs and lows for international retailers in 2012.