The Tube: Going Underground - Season 1 Episode 4
Overview: At busy Bank station, customer service assistants Eamon and Ian have perfected their own method for dealing with unexpected problems caused by passengers. They must face an epidemic of customers dropping phones, wallets and Oyster cards on to the tracks. Eamon must bring trains to a halt in order to retrieve passengers' belongings but then the train driver drops his keys on to the tracks as well.