As part of the BBC’s Identity season we meet the people who feed us after hours, following the characters and cuisines that only come out after dark. Starting with the heady rush of a London kebab shop, Mike Johnson explores late night food culture around the globe. In an increasingly 24-hour world, how and when we eat is changing. What do our late night food habits say about our identities? We meet the late-night taco eaters of Mexico City, and find out why Hong Kong street vendors are under threat. Plus we hear what happens to your body when your meal times are out of sync with your circadian rhythms, and tell you where in the world you can buy an edible Rolex for forty-five cents. Night-owls only, on this episode of The Food Chain. Presented by Mike Johnson, produced by Emily Thomas, and edited by Kent DePinto. (Photo: Taco vendor Alfredo works late into the night in Mexico City. Credit: James Fredrick)