Femsa also operates OXXO, the largest and most profitable chain of convenience stores in Latin America.

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There's even a chain of convenience stores called Puffin Stop.

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Wawa, a regional chain of six hundred convenience stores known for its near cult-like customer following, screens potential store managers fiercely against two values: Delight Customers and Value People.

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For the study, the researchers used two data sets from chain stores and interviewed managers of nine convenience store chains.

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Tesco's move, preceded by the Co-op's purchase of the Alldays chain earlier this week, has shown that convenience stores are in demand.

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