Knowing that all-too-often customer service in Britain is terrible and we're being hugely under-served, Mary's also concerned about the death of the high street. With the boom in online shopping, the high street needs to do something to get the consumers coming back.
Heading the Burnham, near Slough, Mary visits Hallmark Foods, a local convenience store at the heart of the village. It's a family run business, but it's struggling, with falling profits and locals shopping elsewhere.
From swearing to smoking in front of the customers, Mary is shocked by how the members off staff behave, and she's determined to turn the place around and get the business back on its feet. Will she convince the management to get on board?
Mary Portas: Secret Shopper, C4, 8pm
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