Inside the Christmas Factory

Gregg Wallace visits a factory that produces 2 million tins of festive chocolate assortments a year, with 5,500 individual sweets packaged and dropped into containers every minute. Cherry Healey learns how the Royal Mail produces Christmas stamps, and also travels to Germany to join a crew of 35 ornament decorators applying glitter and paint to glass Santas. Historian Ruth Goodman goes on the trail of the festive turkey, a tradition that began in the 16th century when these birds were first introduced from Mexico.