"Growing evidence indicates that Tesco's success is partly based on trading practices that are having serious consequences for suppliers, farmers, overseas workers, local shops and the environment.";"
Indeed it does, but a very large proportion of Tesco's income now comes other sectors such as insurance and credit cards. They have deals with major insurance providers to take less commission than 'normal' brokers and (as far as I am aware) do not give commission to their sales staff, but keep it for themselves.
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