This is the moment Tom Grennan surprised fans at a blind taste test at a local Tesco in his hometown.<br /><br />Customers at the store in Bedford were invited to sample different flavours of popchips [COR] while blindfolded.<br /><br />Upon removing their eye coverings, they were shocked to find themselves face-to-face with their favourite pop star and locally-born celeb, 29-year-old Tom.<br /><br />Unbeknownst to them, the Brit Awards-nominated star had swapped places with a staff member while the shoppers tried out the "better-for-you" snack.