In a food manufacturing world dominated by giants on the scale of Nestle, Danone, Mars and Kraft, Cadbury might seem to some like a bite-sized snack, especially as it sells on a lower multiple of earnings than some of its overseas rivals. The discrepancy will be even more obvious as the global economy picks up momentum after the recent slump. Cadbury may be essentially British, but so was Rowntree Mackintosh. And we know what happened to that.