Have you ever wondered what the small green shelters are that feature on some of London's streets? A cabmen's shelter is a small building or shed found at the side or in the middle of roads, usually consisting of a small kitchen and a hatch through which food and drinks can be passed. Some have a few chairs or benches and tables in them, while others may put seating outside on sunny days. These green shelters first appeared in Victorian London when the law prohibited horse and carriage drivers from leaving their cabs unattended in a cab rank. Thanks to the Cabmen's Shelter Fund and London Taxi PR for helping us make this film.