Watch Series: Supermarket Secrets Released in (2013) - Season 1 produced by UK, The TV Series categorized in Documentary, and content rating 1h with duration 40 min broadcasted as these networks BBC One, Streamed at Putlocker & directed by Matthew Ainsworth, Tom Watt-Smith. Gregg Wallace goes behind the scenes with Britain's biggest food retailers - across a year - to discover how they source, make and move the food we find on the supermarket shelves. - Season 1