Ian Hislop's Trains That Changed the World - Season 1 Episode 1 Speed

How four iconic British-built trains revolutionised rail travel and inspired incredible railway projects the world over. The Flying Scotsman was the first train to break the 100mph barrier. Travelling aboard this iconic steam locomotive, cameras reveal the engineering brilliance behind its design, and there's also a look into the new era of high-speed rail, including the opening of the Eurostar