Tesco is expert at tailoring their ranges to exactly the sorts of local customers. Most big chains try to standardise ranges across the entire company in search of non-existent efficiencies.
Tesco realises that what a shopper in the poor area of Belfast wants is quite different to a middle-class Glasgwegian, and it profits accordingly.
Tesco realises that what a shopper in the poor area of Belfast wants is quite different to a middle-class Glasgwegian, and it profits accordingly.