Part 1 : Chiswick - On The Skid Patch describes a visit by BBC Television to the bus-drivers' training ground when new cars from the Motor Show were demonstrated to viewers. Part 2 : Overhaul At Acton shows how London Transport trains are stripped, cleaned, examined and made ready for another period of service. Part 3 : Croydon Food Production Centre shows how food is prepared in quantity for London Transport canteens