In its first appearance, Old Bailey to the Pump Trolley to get around his old line, watching for broken signals or collapsed viaducts. He once used it to alert to Henry, after the big green engine accidentally pushed some trucks into a ravine. In the CGI Series, it is used by the Workmen for maintenance work. Sir Topham Hatt and his helpers would occasionally uses the Pump Trolley as a private mode of transportation when the engines were not available, most notably around Misty Island. It appeared in the fifth, fourteenth, fifteenth and sixteenth seasons.