In this special episode the Hangouts team take part in the Trial Operations of the Elizabeth line. They take a ride on the new trains, meet fans of the show, and transport historian and co-presenter of Secrets of the London Underground Tim Dunn. They also talk to Transport for London's Commissioner Andy Byford, Chief Operating Officer Andy Lord and Crossrail CEO MArk Wild about what this moment means to them. In the studio, they are joined by Emma Sewell to disocver the inspiration behind the unique Elizabeth line moquette.