In the first episde, Chris begins in the cab of Puffing Billy, the world's oldest-surviving steam locomotive, which was built in 1813 and designed to move coal along a five-mile stretch of track from a Northumberland mine to the docks. Chris also tells the story of Henry Booth, who not only championed George Stephenson's famous Rocket, but also helped finance it, and talks about the work of the navvies who dug the tunnels and laid the tracks.

The crucial roles the railways played in the two world wars.

The dying days of steam, and how the railways fought back.