Who hasn't drunkenly bought a hot dog from a street stall on a night out? If you hated yourself after eating one, pause to spare a thought for the midnight hot dog sellers, who ply their trade to unappreciative clubbers. In this week's Doc X, Jamie Roberts' Dinner Time, we meet Arezki – an enterprising Soho street hustler who evades police and pissed-up clubbers to make his money.